feat(TRUEREF-0023): add sqlite-vec search pipeline

docs/ARCHITECTURE.md

@@ -1,171 +1,168 @@
 # Architecture
 
-Last Updated: 2026-03-30T00:00:00.000Z
+Last Updated: 2026-04-01T12:05:23.000Z
 
 ## Overview
 
-TrueRef is a TypeScript-first, self-hosted documentation retrieval platform built on SvelteKit. The repository contains a Node-targeted web application, a REST API, a Model Context Protocol server, and a multi-threaded server-side indexing pipeline backed by SQLite via better-sqlite3 and Drizzle ORM.
+TrueRef is a TypeScript-first, self-hosted documentation retrieval platform built on SvelteKit. The repository contains a Node-targeted web application, a REST API, a Model Context Protocol server, and a worker-threaded indexing pipeline backed by SQLite via better-sqlite3, Drizzle ORM, FTS5, and sqlite-vec.
 
-- Primary language: TypeScript (141 files) with a small amount of JavaScript configuration (2 files)
+- Primary language: TypeScript (147 `.ts` files) with a small amount of JavaScript configuration and build code (2 `.js` files), excluding generated output and dependencies
-- Application type: Full-stack SvelteKit application with worker-threaded indexing and retrieval services
+- Application type: Full-stack SvelteKit application with server-side indexing, retrieval, and MCP integration
 - Runtime framework: SvelteKit with adapter-node
-- Storage: SQLite (WAL mode) with Drizzle-managed schema plus hand-written FTS5 setup
+- Storage: SQLite in WAL mode with Drizzle-managed relational schema, FTS5 full-text indexes, and sqlite-vec virtual tables for vector lookup
-- Concurrency: Node.js worker_threads for parse and embedding work
+- Concurrency: Node.js `worker_threads` for parse, embed, and auxiliary write-worker infrastructure
-- Testing: Vitest with separate client and server projects
+- Testing: Vitest for unit and integration coverage
 
 ## Project Structure
 
-- src/routes: SvelteKit pages and HTTP endpoints, including the public UI and /api/v1 surface
+- `src/routes`: SvelteKit pages and HTTP endpoints, including the public UI and `/api/v1` surface
-- src/lib/server: Backend implementation grouped by concern: api, config, crawler, db, embeddings, mappers, models, parser, pipeline, search, services, utils
+- `src/lib/server`: Backend implementation grouped by concern: `api`, `config`, `crawler`, `db`, `embeddings`, `mappers`, `models`, `parser`, `pipeline`, `search`, `services`, `utils`
-- src/mcp: Standalone MCP server entry point and tool handlers
+- `src/mcp`: Standalone MCP server entry point, client, tests, and tool handlers
-- static: Static assets such as robots.txt
+- `scripts`: Build helpers, including worker bundling
-- docs/features: Feature-level implementation notes and product documentation
+- `static`: Static assets such as `robots.txt`
-- build: Generated SvelteKit output
+- `docs/features`: Feature-level implementation notes and product documentation
+- `build`: Generated SvelteKit output and bundled worker entrypoints
 
 ## Key Directories
 
-### src/routes
+### `src/routes`
 
-Contains the UI entry points and API routes. The API tree under src/routes/api/v1 is the public HTTP contract for repository management, indexing jobs, search/context retrieval, settings, filesystem browsing, JSON schema discovery, real-time SSE progress streaming, and job control (pause/resume/cancel).
+Contains the UI entry points and API routes. The API tree under `src/routes/api/v1` is the public HTTP contract for repository management, version discovery, indexing jobs, search/context retrieval, embedding settings, indexing settings, filesystem browsing, worker-status inspection, and SSE progress streaming.
 
-### src/lib/server/db
+### `src/lib/server/db`
 
-Owns SQLite schema definitions, migration bootstrapping, and FTS initialization. Database startup runs through initializeDatabase(), which executes Drizzle migrations and then applies FTS5 SQL that cannot be expressed directly in the ORM.
+Owns SQLite schema definitions, relational migrations, connection bootstrapping, and sqlite-vec loading. Database startup goes through `initializeDatabase()` and `getClient()`, both of which configure WAL-mode pragmas and ensure sqlite-vec is loaded on each connection before vector-backed queries run.
 
-### src/lib/server/pipeline
+### `src/lib/server/search`
 
-Coordinates crawl, parse, chunk, store, and optional embedding generation work using a worker thread pool. The pipeline module consists of:
+Implements keyword, vector, and hybrid retrieval. Keyword search uses SQLite FTS5 and BM25-style ranking. Vector search uses `SqliteVecStore` to maintain per-profile sqlite-vec `vec0` tables plus rowid mapping tables, and hybrid search blends FTS and vector candidates through reciprocal rank fusion.
 
-- **WorkerPool** (`worker-pool.ts`): Manages a configurable number of Node.js `worker_threads` for parse jobs and an optional dedicated embed worker. Dispatches jobs round-robin to idle workers, enforces per-repository serialisation (one active job per repo), auto-respawns crashed workers, and supports runtime concurrency adjustment via `setMaxConcurrency()`. Falls back to main-thread execution when worker scripts are not found.
+### `src/lib/server/pipeline`
-- **Parse worker** (`worker-entry.ts`): Runs in a worker thread. Opens its own `better-sqlite3` connection (WAL mode, `busy_timeout = 5000`), constructs a local `IndexingPipeline` instance, and processes jobs by posting `progress`, `done`, or `failed` messages back to the parent.
-- **Embed worker** (`embed-worker-entry.ts`): Dedicated worker for embedding generation. Loads the embedding profile from the database, creates an `EmbeddingService`, and processes embed requests after the parse worker finishes a job.
-- **ProgressBroadcaster** (`progress-broadcaster.ts`): Server-side pub/sub for real-time SSE streaming. Supports per-job, per-repository, and global subscriptions. Caches the last event per job for reconnect support.
-- **Worker types** (`worker-types.ts`): Shared TypeScript discriminated union types for `ParseWorkerRequest`/`ParseWorkerResponse` and `EmbedWorkerRequest`/`EmbedWorkerResponse` message protocols.
-- **Startup** (`startup.ts`): Recovers stale jobs, constructs singleton `JobQueue`, `IndexingPipeline`, `WorkerPool`, and `ProgressBroadcaster` instances, reads concurrency settings from the database, and drains queued work after restart.
-- **JobQueue** (`job-queue.ts`): SQLite-backed queue that delegates to the `WorkerPool` when available, with pause/resume/cancel support.
 
-### src/lib/server/search
+Coordinates crawl, diff, parse, store, embed, and job-state broadcasting. The pipeline module consists of:
 
-Implements keyword, vector, and hybrid retrieval. The keyword path uses SQLite FTS5 and BM25; the hybrid path blends FTS and vector search with reciprocal rank fusion.
+- `IndexingPipeline`: orchestrates crawl, diff, parse, transactional replacement, optional embedding generation, and repository statistics updates
+- `WorkerPool`: manages parse workers, an optional embed worker, an optional write worker, per-repository-and-version serialization, worker respawn, and runtime concurrency changes
+- `worker-entry.ts`: parse worker that opens its own `better-sqlite3` connection, runs the indexing pipeline, and reports progress back to the parent
+- `embed-worker-entry.ts`: embedding worker that loads the active profile, creates an `EmbeddingService`, and generates vectors after parse completion
+- `write-worker-entry.ts`: batch-write worker with a `write`/`write_ack`/`write_error` message protocol for document and snippet persistence
+- `progress-broadcaster.ts`: server-side pub/sub for per-job, per-repository, global, and worker-status SSE streams
+- `startup.ts`: recovers stale jobs, constructs singleton queue/pipeline/pool/broadcaster instances, loads concurrency settings, and drains queued work after restart
+- `worker-types.ts`: shared TypeScript discriminated unions for parse, embed, and write worker protocols
 
-### src/lib/server/crawler and src/lib/server/parser
+### `src/lib/server/crawler` and `src/lib/server/parser`
 
-Convert GitHub repositories and local folders into normalized snippet records. Crawlers fetch repository contents, parsers split Markdown, code, config, HTML-like, and plain-text files into chunks, and downstream services persist searchable content.
+Convert GitHub repositories and local folders into normalized snippet records. Crawlers fetch repository contents and configuration, parsers split Markdown, code, config, HTML-like, and plain-text files into searchable snippet records, and downstream services persist searchable content and embeddings.
 
-### src/mcp
+### `src/mcp`
 
-Provides a thin compatibility layer over the HTTP API. The MCP server exposes resolve-library-id and query-docs over stdio or HTTP and forwards work to local tool handlers.
+Provides a thin compatibility layer over the HTTP API. The MCP server exposes `resolve-library-id` and `query-docs` over stdio or HTTP and forwards work to local handlers that reuse the application retrieval stack.
 
 ## Design Patterns
 
-- The WorkerPool implements an **observer/callback pattern**: the pool owner provides `onProgress`, `onJobDone`, `onJobFailed`, `onEmbedDone`, and `onEmbedFailed` callbacks at construction time, and the pool invokes them when workers post messages.
+- **Service layer**: business logic lives in classes such as `RepositoryService`, `VersionService`, `SearchService`, `HybridSearchService`, and `EmbeddingService`
-- ProgressBroadcaster implements a **pub/sub pattern** with three subscription tiers (per-job, per-repository, global) and last-event caching for SSE reconnect.
+- **Factory pattern**: embedding providers are created from persisted profile records through registry/factory helpers
-- The implementation consistently uses **service classes** such as RepositoryService, SearchService, and HybridSearchService for business logic.
+- **Mapper/entity separation**: mappers translate between raw database rows and domain entities such as `RepositoryEntity`, `RepositoryVersionEntity`, and `EmbeddingProfileEntity`
-- Mapping and entity layers separate raw database rows from domain objects through **mapper/entity pairs** such as RepositoryMapper and RepositoryEntity.
+- **Module-level singletons**: pipeline startup owns lifecycle for `JobQueue`, `IndexingPipeline`, `WorkerPool`, and `ProgressBroadcaster`, with accessor functions for route handlers
-- Pipeline startup uses **module-level singletons** for JobQueue, IndexingPipeline, WorkerPool, and ProgressBroadcaster lifecycle management, with accessor functions (getQueue, getPool, getBroadcaster) for route handlers.
+- **Pub/sub**: `ProgressBroadcaster` maintains job, repository, global, and worker-status subscriptions for SSE delivery
-- Worker message protocols use **TypeScript discriminated unions** (`type` field) for type-safe worker ↔ parent communication.
+- **Discriminated unions**: worker message protocols use a `type` field for type-safe parent/worker communication
 
 ## Key Components
 
 ### SvelteKit server bootstrap
 
-src/hooks.server.ts initializes the database, loads persisted embedding configuration, creates the optional EmbeddingService, reads indexing concurrency settings from the database, starts the indexing pipeline with WorkerPool and ProgressBroadcaster via `initializePipeline(db, embeddingService, { concurrency, dbPath })`, and applies CORS headers to all /api routes.
+`src/hooks.server.ts` initializes the relational database, opens the shared raw SQLite client, loads the default embedding profile, creates the optional `EmbeddingService`, reads indexing concurrency from the `settings` table, and initializes the queue/pipeline/worker infrastructure.
 
 ### Database layer
 
-src/lib/server/db/schema.ts defines repositories, repository_versions, documents, snippets, embedding_profiles, snippet_embeddings, indexing_jobs, repository_configs, and settings. This schema models the indexed library catalog, retrieval corpus, embedding state, and job tracking.
+`src/lib/server/db/schema.ts` defines repositories, repository versions, documents, snippets, embedding profiles, relational embedding metadata, indexing jobs, repository configs, and generic settings. Relational embedding rows keep canonical model metadata and raw float buffers, while sqlite-vec virtual tables are managed separately per profile through `SqliteVecStore`.
+
+### sqlite-vec integration
+
+`src/lib/server/db/sqlite-vec.ts` centralizes sqlite-vec loading and deterministic per-profile table naming. `SqliteVecStore` creates `vec0` tables plus rowid mapping tables, backfills missing rows from `snippet_embeddings`, removes stale vector references, and executes nearest-neighbor queries constrained by repository, optional version, and profile.
 
 ### Retrieval API
 
-src/routes/api/v1/context/+server.ts validates input, resolves repository and optional version IDs, chooses keyword, semantic, or hybrid retrieval, applies token budgeting that skips oversized snippets instead of stopping early, prepends repository rules, and formats JSON or text responses with repository and version metadata.
+`src/routes/api/v1/context/+server.ts` validates input, resolves repository and optional version scope, chooses keyword, semantic, or hybrid retrieval, applies token budgeting, and formats JSON or text responses. `/api/v1/libs/search` handles repository-level lookup, while MCP tool handlers expose the same retrieval behavior over stdio or HTTP transports.
 
 ### Search engine
 
-src/lib/server/search/search.service.ts preprocesses raw user input into FTS5-safe MATCH expressions before keyword search and repository lookup. src/lib/server/search/hybrid.search.service.ts supports explicit keyword, semantic, and hybrid modes, falls back to vector retrieval when FTS yields no candidates and an embedding provider is configured, and uses reciprocal rank fusion for blended ranking.
+`SearchService` preprocesses raw user input into FTS5-safe expressions before keyword search. `HybridSearchService` supports explicit keyword, semantic, and hybrid modes, falls back to vector retrieval when keyword search yields no candidates and an embedding provider is configured, and uses reciprocal rank fusion to merge ranked lists. `VectorSearch` delegates KNN execution to `SqliteVecStore` instead of doing brute-force in-memory cosine scoring.
 
-### Repository management
+### Repository and version management
 
-src/lib/server/services/repository.service.ts provides CRUD and statistics for indexed repositories, including canonical ID generation for GitHub and local sources.
+`RepositoryService` and `VersionService` provide CRUD, indexing-status, cleanup, and statistics logic for indexed repositories and tagged versions, including sqlite-vec cleanup when repository-scoped or version-scoped content is removed.
 
-### MCP surface
+### Worker-threaded indexing
 
-src/mcp/index.ts creates the MCP server, registers the two supported tools, and exposes them over stdio or streamable HTTP.
+The active indexing path is parse-worker-first: queued jobs are dispatched to parse workers, progress is written to SQLite and broadcast over SSE, and successful parse completion can enqueue embedding work on the dedicated embed worker. The worker pool also exposes status snapshots through `/api/v1/workers`. Write-worker infrastructure exists in the current architecture and is bundled at build time, but parse/embed flow remains the primary live path described by `IndexingPipeline` and `WorkerPool`.
 
-### Worker thread pool
+### SSE streaming and job control
 
-src/lib/server/pipeline/worker-pool.ts manages a pool of Node.js worker threads. Parse workers run the full crawl → parse → store pipeline inside isolated threads with their own better-sqlite3 connections (WAL mode enables concurrent readers). An optional embed worker handles embedding generation in a separate thread. The pool enforces per-repository serialisation, auto-respawns crashed workers, and supports runtime concurrency changes persisted through the settings table.
+`progress-broadcaster.ts` provides real-time Server-Sent Event streaming of indexing progress. Route handlers under `/api/v1/jobs/stream` and `/api/v1/jobs/[id]/stream` expose SSE endpoints, and `/api/v1/workers` exposes worker-pool status. Job control endpoints support pause, resume, and cancel transitions backed by SQLite job state.
-
-### SSE streaming
-
-src/lib/server/pipeline/progress-broadcaster.ts provides real-time Server-Sent Event streaming of indexing progress. Route handlers in src/routes/api/v1/jobs/stream and src/routes/api/v1/jobs/[id]/stream expose SSE endpoints. The broadcaster supports per-job, per-repository, and global subscriptions, with last-event caching for reconnect via the `Last-Event-ID` header.
-
-### Job control
-
-src/routes/api/v1/jobs/[id]/pause, resume, and cancel endpoints allow runtime control of indexing jobs. The JobQueue supports pause/resume/cancel state transitions persisted to SQLite.
 
 ### Indexing settings
 
-src/routes/api/v1/settings/indexing exposes GET and PUT for indexing concurrency. PUT validates and clamps the value to `max(cpus - 1, 1)`, persists it to the settings table, and live-updates the WorkerPool via `setMaxConcurrency()`.
+`/api/v1/settings/indexing` exposes GET and PUT for indexing concurrency. The value is persisted in the `settings` table and applied live to the `WorkerPool` through `setMaxConcurrency()`.
 
 ## Dependencies
 
 ### Production
 
-- @modelcontextprotocol/sdk: MCP server transport and protocol types
+- `@modelcontextprotocol/sdk`: MCP server transport and protocol types
-- @xenova/transformers: local embedding support
+- `@xenova/transformers`: local embedding support
-- better-sqlite3: synchronous SQLite driver
+- `better-sqlite3`: synchronous SQLite driver used by the main app and workers
-- zod: runtime input validation for MCP tools and server helpers
+- `sqlite-vec`: SQLite vector extension used for `vec0` storage and nearest-neighbor queries
+- `zod`: runtime validation for MCP tools and server helpers
 
 ### Development
 
-- @sveltejs/kit and @sveltejs/adapter-node: application framework and Node deployment target
+- `@sveltejs/kit` and `@sveltejs/adapter-node`: application framework and Node deployment target
-- drizzle-kit and drizzle-orm: schema management and typed database access
+- `drizzle-kit` and `drizzle-orm`: schema management and typed database access
-- esbuild: worker thread entry point bundling (build/workers/)
+- `esbuild`: worker entrypoint bundling into `build/workers`
-- vite and @tailwindcss/vite: bundling and Tailwind integration
+- `vite` and `@tailwindcss/vite`: application bundling and Tailwind integration
-- vitest and @vitest/browser-playwright: server and browser test execution
+- `vitest` and `@vitest/browser-playwright`: server and browser test execution
-- eslint, typescript-eslint, eslint-plugin-svelte, prettier, prettier-plugin-svelte, prettier-plugin-tailwindcss: linting and formatting
+- `eslint`, `typescript-eslint`, `eslint-plugin-svelte`, `prettier`, `prettier-plugin-svelte`, `prettier-plugin-tailwindcss`: linting and formatting
-- typescript and @types/node: type-checking and Node typings
+- `typescript` and `@types/node`: type-checking and Node typings
 
 ## Module Organization
 
-The backend is organized by responsibility rather than by route. HTTP handlers in src/routes/api/v1 are intentionally thin and delegate to library modules in src/lib/server. Within src/lib/server, concerns are separated into:
+The backend is organized by responsibility rather than by route. HTTP handlers under `src/routes/api/v1` are intentionally thin and delegate to modules in `src/lib/server`. Within `src/lib/server`, concerns are separated into:
 
-- models and mappers for entity translation
+- `models` and `mappers` for entity translation
-- services for repository/version operations
+- `services` for repository/version operations
-- search for retrieval strategies
+- `search` for keyword, vector, and hybrid retrieval strategies
-- crawler and parser for indexing input transformation
+- `crawler` and `parser` for indexing input transformation
-- pipeline for orchestration and job execution
+- `pipeline` for orchestration, workers, and job execution
-- embeddings for provider abstraction and embedding generation
+- `embeddings` for provider abstraction and vector generation
-- api and utils for response formatting, validation, and shared helpers
+- `db`, `api`, `config`, and `utils` for persistence, response formatting, validation, and shared helpers
 
-The frontend and backend share the same SvelteKit repository, but most non-UI behavior is implemented on the server side.
+The frontend and backend live in the same SvelteKit repository, but most non-UI behavior is implemented on the server side.
 
 ## Data Flow
 
 ### Indexing flow
 
-1. Server startup runs initializeDatabase() and initializePipeline() from src/hooks.server.ts, which creates the WorkerPool, ProgressBroadcaster, and JobQueue singletons.
+1. Server startup runs database initialization, opens the shared client, loads sqlite-vec, and initializes the pipeline singletons.
-2. The pipeline recovers stale jobs (marks running → failed, indexing → error), reads concurrency settings, and resumes queued work.
+2. Startup recovery marks interrupted jobs as failed, resets repositories stuck in `indexing`, reads persisted concurrency settings, and drains queued jobs.
-3. When a job is enqueued, the JobQueue delegates to the WorkerPool, which dispatches work to an idle parse worker thread.
+3. `JobQueue` dispatches eligible work to the `WorkerPool`, which serializes by `(repositoryId, versionId)` and posts jobs to idle parse workers.
-4. Each parse worker opens its own better-sqlite3 connection (WAL mode) and runs the full crawl → parse → store pipeline, posting progress messages back to the parent thread.
+4. Each parse worker opens its own SQLite connection, crawls the source, computes differential work, parses files into snippets, and persists replacement data through the indexing pipeline.
-5. The parent thread updates job progress in the database and broadcasts SSE events through the ProgressBroadcaster.
+5. The parent thread updates job progress in SQLite and broadcasts SSE progress and worker-status events.
-6. On parse completion, if an embedding provider is configured, the WorkerPool enqueues an embed request to the dedicated embed worker, which generates vectors in its own thread.
+6. If an embedding provider is configured, the completed parse job triggers embed work that stores canonical embedding blobs and synchronizes sqlite-vec profile tables for nearest-neighbor lookup.
-7. Job control endpoints allow pausing, resuming, or cancelling jobs at runtime.
+7. Repository/version statistics and job status are finalized in SQLite, and control endpoints can pause, resume, or cancel subsequent queued work.
 
 ### Retrieval flow
 
-1. Clients call /api/v1/libs/search, /api/v1/context, or the MCP tools.
+1. Clients call `/api/v1/libs/search`, `/api/v1/context`, or the MCP tools.
-2. Route handlers validate input and load the SQLite client.
+2. Route handlers validate input and use the shared SQLite client.
-3. Keyword search uses FTS5 via SearchService; hybrid search optionally adds vector results via HybridSearchService.
+3. Keyword search uses FTS5 through `SearchService`; semantic search uses sqlite-vec KNN through `VectorSearch`; hybrid search merges both paths with reciprocal rank fusion.
-4. Query preprocessing normalizes punctuation-heavy or code-like input before FTS search, while semantic mode bypasses FTS and auto or hybrid mode can fall back to vector retrieval when keyword search produces no candidates.
+4. Retrieval is scoped by repository and optional version, and semantic/hybrid paths can fall back when keyword search yields no usable candidates.
-5. Token budgeting walks ranked snippets in order and skips individual over-budget snippets so later matches can still be returned.
+5. Token budgeting selects ranked snippets for the response formatter, which emits repository-aware JSON or text payloads.
-6. Formatters emit repository and version metadata in JSON responses and origin-aware or explicit no-result text output for plain-text responses.
-7. MCP handlers expose the same retrieval behavior over stdio or HTTP transports.
 
 ## Build System
 
-- Build command: npm run build (runs `vite build` then `node scripts/build-workers.mjs`)
+- Build command: `npm run build` (runs `vite build` then `node scripts/build-workers.mjs`)
-- Worker bundling: scripts/build-workers.mjs uses esbuild to compile worker-entry.ts and embed-worker-entry.ts into build/workers/ as ESM bundles (.mjs), with $lib path aliases resolved and better-sqlite3/@xenova/transformers marked external
+- Worker bundling: `scripts/build-workers.mjs` uses esbuild to compile `worker-entry.ts`, `embed-worker-entry.ts`, and `write-worker-entry.ts` into `build/workers/` as ESM bundles
-- Test command: npm run test
+- Test command: `npm test`
-- Primary local run command from package.json: npm run dev
+- Primary local run command: `npm run dev`
-- MCP entry points: npm run mcp:start and npm run mcp:http
+- MCP entry points: `npm run mcp:start` and `npm run mcp:http`

docs/FINDINGS.md

@@ -1,29 +1,28 @@
 # Findings
 
-Last Updated: 2026-03-30T00:00:00.000Z
+Last Updated: 2026-04-01T12:05:23.000Z
 
 ## Initializer Summary
 
-- JIRA: TRUEREF-0022
+- JIRA: TRUEREF-0023
 - Refresh mode: REFRESH_IF_REQUIRED
-- Result: Refreshed ARCHITECTURE.md and FINDINGS.md. CODE_STYLE.md remained trusted — new worker thread code follows established conventions.
+- Result: Refreshed ARCHITECTURE.md and FINDINGS.md. CODE_STYLE.md remained trusted — sqlite-vec, worker-status, and write-worker additions follow the established conventions already documented.
 
 ## Research Performed
 
-- Discovered 141 TypeScript/JavaScript source files (up from 110), with new pipeline worker, broadcaster, and SSE endpoint files.
+- Counted 149 TypeScript/JavaScript source files in the repository-wide scan and verified the live, non-generated source mix as 147 `.ts` files and 2 `.js` files.
-- Read worker-pool.ts, worker-entry.ts, embed-worker-entry.ts, worker-types.ts, progress-broadcaster.ts, startup.ts, job-queue.ts to understand the new worker thread architecture.
+- Read `package.json`, `.prettierrc`, and `eslint.config.js` to verify dependencies, formatting rules, and linting conventions.
-- Read SSE endpoints (jobs/stream, jobs/[id]/stream) and job control endpoints (pause, resume, cancel).
+- Read `sqlite-vec.ts`, `sqlite-vec.store.ts`, `vector.search.ts`, `hybrid.search.service.ts`, `schema.ts`, `client.ts`, and startup wiring to verify the accepted sqlite-vec implementation and current retrieval architecture.
-- Read indexing settings endpoint and hooks.server.ts to verify startup wiring changes.
+- Read `worker-pool.ts`, `worker-types.ts`, `write-worker-entry.ts`, and `/api/v1/workers/+server.ts` to verify the current worker topology and status surface.
-- Read build-workers.mjs and package.json to verify build system and dependency changes.
+- Compared `docs/docs_cache_state.yaml` against the live docs and codebase to identify stale cache evidence and architecture drift.
-- Compared trusted cache state with current codebase to identify ARCHITECTURE.md as stale.
+- Confirmed `CODE_STYLE.md` still matches the codebase: tabs, single quotes, `trailingComma: none`, ESM imports with `node:` built-ins, flat ESLint config, and descriptive PascalCase/camelCase naming remain consistent.
-- Confirmed CODE_STYLE.md conventions still match the codebase — new code uses PascalCase classes, camelCase functions, tab indentation, ESM imports, and TypeScript discriminated unions consistent with existing style.
 
 ## Open Questions For Planner
 
-- Verify whether the retrieval response contract should document the new repository and version metadata fields formally in a public API reference beyond the architecture summary.
+- Verify whether the write-worker protocol should become part of the active indexing flow or remain documented as optional infrastructure only.
-- Verify whether parser chunking should evolve further from file-level and declaration-level boundaries to member-level semantic chunks for class-heavy codebases.
+- Verify whether worker-status and SSE event payloads should be documented in a dedicated API reference for external consumers.
-- Verify whether the SSE streaming contract (event names, data shapes) should be documented in a dedicated API reference for external consumers.
+- Verify whether sqlite-vec operational details such as per-profile vec-table lifecycle and backfill behavior should move into a separate persistence document if the subsystem grows further.
-- Assess whether the WorkerPool fallback mode (main-thread execution when worker scripts are missing) needs explicit test coverage or should be removed in favour of a hard build requirement.
+- Assess whether the WorkerPool fallback mode (main-thread execution when worker scripts are missing) still belongs in the runtime contract or should be removed in favour of a hard build requirement.
 
 ## Planner Notes Template
 
@@ -37,6 +36,41 @@ Add subsequent research below this section.
 - Findings:
 - Risks / follow-ups:
 
+### 2026-04-01 — TRUEREF-0023 initializer refresh audit
+
+- Task: Refresh only stale or invalid documentation after the accepted sqlite-vec implementation.
+- Files inspected:
+  - `docs/docs_cache_state.yaml`
+  - `docs/ARCHITECTURE.md`
+  - `docs/CODE_STYLE.md`
+  - `docs/FINDINGS.md`
+  - `package.json`
+  - `.prettierrc`
+  - `eslint.config.js`
+  - `src/hooks.server.ts`
+  - `src/lib/server/db/client.ts`
+  - `src/lib/server/db/schema.ts`
+  - `src/lib/server/db/sqlite-vec.ts`
+  - `src/lib/server/search/sqlite-vec.store.ts`
+  - `src/lib/server/search/vector.search.ts`
+  - `src/lib/server/search/hybrid.search.service.ts`
+  - `src/lib/server/pipeline/startup.ts`
+  - `src/lib/server/pipeline/worker-pool.ts`
+  - `src/lib/server/pipeline/worker-types.ts`
+  - `src/lib/server/pipeline/write-worker-entry.ts`
+  - `src/routes/api/v1/workers/+server.ts`
+  - `scripts/build-workers.mjs`
+- Findings:
+  - The trusted cache metadata was no longer reliable as evidence for planning: `docs/docs_cache_state.yaml` still referenced 2026-03-27 hashes while `ARCHITECTURE.md` and `FINDINGS.md` had been edited later.
+  - `ARCHITECTURE.md` was stale. It still described only parse and embed worker concurrency, omitted the `sqlite-vec` production dependency, and did not document the current per-profile vec-table storage layer, worker-status endpoint, or write-worker infrastructure.
+  - The current retrieval stack uses sqlite-vec concretely: `loadSqliteVec()` bootstraps connections, `SqliteVecStore` manages vec0 tables plus rowid mapping tables, and `VectorSearch` delegates nearest-neighbor lookup to that store instead of brute-force scoring.
+  - The worker architecture now includes parse, embed, and write worker protocols in `worker-types.ts`, build-time bundling for all three entries, and a `/api/v1/workers` route that returns `WorkerPool` status snapshots.
+  - `CODE_STYLE.md` remained valid and did not require refresh. The observed source and config files still use tabs, single quotes, `trailingComma: none`, flat ESLint config, ESM imports, PascalCase class names, and camelCase helpers exactly as already documented.
+  - `FINDINGS.md` itself was stale because the initializer summary still referred to `TRUEREF-0022` instead of the requested `TRUEREF-0023` refresh.
+- Risks / follow-ups:
+  - The write-worker protocol exists and is bundled, but the active indexing path is still centered on parse plus optional embed flow. Future documentation should keep distinguishing implemented infrastructure from the currently exercised path.
+  - Cache validity should continue to be driven by deterministic hash evidence rather than document timestamps or trust text alone.
+
 ### 2026-03-27 — FEEDBACK-0001 initializer refresh audit
 
 - Task: Refresh only stale documentation after changes to retrieval, formatters, token budgeting, and parser behavior.
@@ -192,3 +226,112 @@ Add subsequent research below this section.
 - Risks / follow-ups:
   - The fix should preserve the existing `/repos/[id]` route shape instead of redesigning it to a rest route unless a broader navigation contract change is explicitly requested.
   - Any normalization helper introduced for the repo detail page should be reused consistently across server load and client event handlers to avoid mixed encoded and decoded repository IDs during navigation and fetches.
+
+### 2026-04-01 — TRUEREF-0023 sqlite-vec replanning research
+
+- Task: Replan the rejected libSQL-native vector iteration around sqlite-vec using the current worktree and verified runtime constraints.
+- Files inspected:
+  - `package.json`
+  - `docs/docs_cache_state.yaml`
+  - `prompts/TRUEREF-0023/prompt.yaml`
+  - `prompts/TRUEREF-0023/progress.yaml`
+  - `prompts/TRUEREF-0023/iteration_0/review_report.yaml`
+  - `prompts/TRUEREF-0023/iteration_0/plan.md`
+  - `prompts/TRUEREF-0023/iteration_0/tasks.yaml`
+  - `src/lib/server/db/client.ts`
+  - `src/lib/server/db/index.ts`
+  - `src/lib/server/db/schema.ts`
+  - `src/lib/server/db/fts.sql`
+  - `src/lib/server/db/vectors.sql`
+  - `src/lib/server/db/schema.test.ts`
+  - `src/lib/server/search/vector.search.ts`
+  - `src/lib/server/search/hybrid.search.service.test.ts`
+  - `src/lib/server/embeddings/embedding.service.ts`
+  - `src/lib/server/embeddings/embedding.service.test.ts`
+  - `src/lib/server/pipeline/job-queue.ts`
+  - `src/lib/server/pipeline/progress-broadcaster.ts`
+  - `src/lib/server/pipeline/progress-broadcaster.test.ts`
+  - `src/lib/server/pipeline/worker-pool.ts`
+  - `src/lib/server/pipeline/worker-entry.ts`
+  - `src/lib/server/pipeline/embed-worker-entry.ts`
+  - `src/lib/server/pipeline/worker-types.ts`
+  - `src/lib/server/pipeline/startup.ts`
+  - `src/lib/server/pipeline/indexing.pipeline.ts`
+  - `src/lib/server/pipeline/indexing.pipeline.test.ts`
+  - `src/routes/api/v1/jobs/+server.ts`
+  - `src/routes/api/v1/jobs/stream/+server.ts`
+  - `src/routes/api/v1/jobs/[id]/stream/+server.ts`
+  - `src/routes/api/v1/sse-and-settings.integration.test.ts`
+  - `src/routes/admin/jobs/+page.svelte`
+  - `src/lib/components/IndexingProgress.svelte`
+  - `src/lib/components/admin/JobStatusBadge.svelte`
+  - `src/lib/components/admin/JobSkeleton.svelte`
+  - `src/lib/components/admin/Toast.svelte`
+  - `src/lib/components/admin/WorkerStatusPanel.svelte`
+  - `scripts/build-workers.mjs`
+  - `node_modules/libsql/types/index.d.ts`
+  - `node_modules/libsql/index.js`
+- Findings:
+  - Iteration 0 already changed the workspace materially: direct DB imports were switched from `better-sqlite3` to `libsql`, the extra WAL-related pragmas were added in the main DB clients and embed worker, composite indexes plus `vec_embedding` were added to the Drizzle schema and migration metadata, `IndexingProgress.svelte` now uses SSE, the admin jobs page was overhauled, and `WorkerPool` now serializes on `(repositoryId, versionId)` instead of repository only.
+  - The rejected vector implementation is still invalid in the current tree. `src/lib/server/db/vectors.sql` contains the rejected libSQL-native assumptions, including a dangling `USING libsql_vector_idx(...)` clause with no valid `CREATE INDEX` statement, and `src/lib/server/search/vector.search.ts` still performs full-table JS cosine scoring over `snippet_embeddings` instead of true in-database KNN.
+  - `sqlite-vec` is not currently present in `package.json` or the lockfile, and there is no existing `sqliteVec.load(...)`, `db.loadExtension(...)`, `vec0`, or extension bootstrap code anywhere under `src/`.
+  - Context7 sqlite-vec docs confirm the supported Node integration path is `import * as sqliteVec from 'sqlite-vec'; sqliteVec.load(db);`, storing vectors in a `vec0` virtual table and querying with `WHERE embedding MATCH ? ORDER BY distance LIMIT ?`. The docs also show vec0 metadata columns can be filtered directly, which fits the repositoryId, versionId, and profileId requirements.
+  - Context7 `better-sqlite3` v12.6.2 docs confirm `db.loadExtension(path)` exists. The installed `libsql` package in this workspace also exposes `loadExtension(path): this` in `node_modules/libsql/types/index.d.ts` and `loadExtension(...args)` in `node_modules/libsql/index.js`, so extension loading is not obviously blocked by the driver API surface alone.
+  - The review report remains the only verified runtime evidence for the current libsql path: `vector_from_float32(...)` is unavailable and `libsql_vector_idx` DDL is rejected in this environment. That invalidates the original native-vector approach but does not by itself prove sqlite-vec extension loading succeeds through the current `libsql` package alias, so the replan must include explicit connection-bootstrap and test coverage for real extension loading on the main DB client and worker-owned connections.
+  - Two iteration-0 deliverables referenced in the rejected plan do not exist in the current worktree: `src/lib/server/pipeline/write-worker-entry.ts` and `src/routes/api/v1/workers/+server.ts`. `scripts/build-workers.mjs` and the admin `WorkerStatusPanel.svelte` already reference those missing paths, so iteration 1 must either create them or revert those dangling references as part of a consistent plan.
+  - The existing admin/SSE work is largely salvageable. `src/routes/api/v1/jobs/stream/+server.ts`, `src/routes/api/v1/jobs/[id]/stream/+server.ts`, `src/lib/server/pipeline/progress-broadcaster.ts`, `src/lib/components/IndexingProgress.svelte`, `src/lib/components/admin/JobSkeleton.svelte`, `src/lib/components/admin/Toast.svelte`, and `src/lib/components/admin/WorkerStatusPanel.svelte` provide a usable foundation, but `src/routes/admin/jobs/+page.svelte` still contains `confirm(...)` and the queue API still only supports exact `repository_id = ?` and single-status filtering.
+  - The existing tests still encode the rejected pre-sqlite-vec model: `embedding.service.test.ts`, `schema.test.ts`, `hybrid.search.service.test.ts`, and `indexing.pipeline.test.ts` seed and assert against `snippet_embeddings.embedding` blobs only. The sqlite-vec replan therefore needs new DB bootstrap helpers, vec-table lifecycle assertions, and vector-search tests that validate actual vec0 writes and filtered KNN queries.
+- Risks / follow-ups:
+  - The current worktree is dirty with iteration-0 partial changes and generated migration metadata, so iteration-1 tasks must explicitly distinguish keep/revise/revert work to avoid sibling tasks fighting over the same files.
+  - Because the current `libsql` package appears to expose `loadExtension`, the replan should avoid assuming an immediate full revert to upstream `better-sqlite3`; instead it should sequence a driver/bootstrap compatibility decision around actual sqlite-vec extension loading behavior with testable acceptance criteria.
+
+### 2026-04-01 — TRUEREF-0023 iteration-2 current-worktree verification
+
+- Task: Replan iteration 2 against the post-iteration-1 workspace state so the first validation unit no longer leaves a known vec_embedding mismatch behind.
+- Files inspected:
+  - `package.json`
+  - `package-lock.json`
+  - `scripts/build-workers.mjs`
+  - `src/lib/server/db/client.ts`
+  - `src/lib/server/db/index.ts`
+  - `src/lib/server/db/schema.ts`
+  - `src/lib/server/db/vectors.sql`
+  - `src/lib/server/db/migrations/0006_yielding_centennial.sql`
+  - `src/lib/server/db/schema.test.ts`
+  - `src/lib/server/embeddings/embedding.service.ts`
+  - `src/lib/server/embeddings/embedding.service.test.ts`
+  - `src/lib/server/search/vector.search.ts`
+  - `src/lib/server/search/hybrid.search.service.ts`
+  - `src/lib/server/search/hybrid.search.service.test.ts`
+  - `src/lib/server/pipeline/job-queue.ts`
+  - `src/lib/server/pipeline/worker-pool.ts`
+  - `src/lib/server/pipeline/worker-entry.ts`
+  - `src/lib/server/pipeline/embed-worker-entry.ts`
+  - `src/lib/server/pipeline/worker-types.ts`
+  - `src/lib/server/pipeline/indexing.pipeline.ts`
+  - `src/lib/server/pipeline/indexing.pipeline.test.ts`
+  - `src/lib/server/pipeline/startup.ts`
+  - `src/lib/server/pipeline/progress-broadcaster.ts`
+  - `src/routes/api/v1/jobs/+server.ts`
+  - `src/routes/api/v1/jobs/stream/+server.ts`
+  - `src/routes/api/v1/sse-and-settings.integration.test.ts`
+  - `src/routes/admin/jobs/+page.svelte`
+  - `src/lib/components/IndexingProgress.svelte`
+  - `src/lib/components/admin/JobStatusBadge.svelte`
+  - `src/lib/components/admin/JobSkeleton.svelte`
+  - `src/lib/components/admin/Toast.svelte`
+  - `src/lib/components/admin/WorkerStatusPanel.svelte`
+  - `prompts/TRUEREF-0023/iteration_1/plan.md`
+  - `prompts/TRUEREF-0023/iteration_1/tasks.yaml`
+- Findings:
+  - Iteration 1 already completed the direct-driver reset in the working tree: `package.json` and `package-lock.json` now contain real `better-sqlite3` plus `sqlite-vec`, and the current production/test files read in this pass import `better-sqlite3`, not `libsql`.
+  - The remaining failing intermediate state is exactly the schema/write mismatch called out in the review report: `src/lib/server/db/schema.ts` and `src/lib/server/db/migrations/0006_yielding_centennial.sql` still declare `vec_embedding`, `src/lib/server/db/index.ts` still executes `vectors.sql`, and `src/lib/server/embeddings/embedding.service.ts` still inserts `(embedding, vec_embedding)` into `snippet_embeddings`.
+  - `src/lib/server/db/vectors.sql` is still invalid startup SQL. It contains a dangling `USING libsql_vector_idx(...)` clause with no enclosing `CREATE INDEX`, so leaving it in the initialization path keeps the rejected libSQL-native design alive.
+  - The first iteration-1 task boundary was therefore wrong for the current baseline: the package/import reset is already present, but it only becomes a valid foundation once the relational `vec_embedding` artifacts and `EmbeddingService` insert path are cleaned up in the same validation unit.
+  - The current search path is still the pre-sqlite-vec implementation. `src/lib/server/search/vector.search.ts` reads every candidate embedding blob and scores in JavaScript; no `vec0`, `sqliteVec.load(db)`, or sqlite-vec KNN query exists anywhere under `src/` yet.
+  - The write worker and worker-status backend are still missing in the live tree even though they are already referenced elsewhere: `scripts/build-workers.mjs` includes `src/lib/server/pipeline/write-worker-entry.ts`, `src/lib/components/admin/WorkerStatusPanel.svelte` fetches `/api/v1/workers`, and `src/routes/api/v1/jobs/stream/+server.ts` currently has no worker-status event source.
+  - The admin jobs page remains incomplete but salvageable: `src/routes/admin/jobs/+page.svelte` still uses `confirm(...)` and `alert(...)`, while `JobSkeleton.svelte`, `Toast.svelte`, `WorkerStatusPanel.svelte`, `JobStatusBadge.svelte`, and `IndexingProgress.svelte` already provide the intended UI foundation.
+  - `src/lib/server/pipeline/job-queue.ts` still only supports exact `repository_id = ?` and single `status = ?` filtering, so API-side filter work remains a separate backend task and does not need to block the vector-storage implementation.
+- Risks / follow-ups:
+  - Iteration 2 task decomposition must treat the current dirty code files from iterations 0 and 1 as the validation baseline, otherwise the executor will keep rediscovering pre-existing worktree drift instead of new task deltas.
+  - The sqlite-vec bootstrap helper and the relational cleanup should be planned as one acceptance unit before any downstream vec0, worker-status, or admin-page tasks, because that is the smallest unit that removes the known broken intermediate state.

package-lock.json

@@ -11,6 +11,7 @@
 				"@modelcontextprotocol/sdk": "^1.27.1",
 				"@xenova/transformers": "^2.17.2",
 				"better-sqlite3": "^12.6.2",
+				"sqlite-vec": "^0.1.9",
 				"zod": "^4.3.6"
 			},
 			"devDependencies": {
@@ -25,6 +26,7 @@
 				"@vitest/browser-playwright": "^4.1.0",
 				"drizzle-kit": "^0.31.8",
 				"drizzle-orm": "^0.45.1",
+				"esbuild": "^0.24.0",
 				"eslint": "^9.39.2",
 				"eslint-config-prettier": "^10.1.8",
 				"eslint-plugin-svelte": "^3.14.0",
@@ -494,9 +496,9 @@
 			}
 		},
 		"node_modules/@esbuild/aix-ppc64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.24.2.tgz",
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 			"cpu": [
 				"ppc64"
 			],
@@ -511,9 +513,9 @@
 			}
 		},
 		"node_modules/@esbuild/android-arm": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.24.2.tgz",
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 			"cpu": [
 				"arm"
 			],
@@ -528,9 +530,9 @@
 			}
 		},
 		"node_modules/@esbuild/android-arm64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.24.2.tgz",
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 				"arm64"
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@@ -545,9 +547,9 @@
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 		},
 		"node_modules/@esbuild/android-x64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.24.2.tgz",
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+			"integrity": "sha512-B6Q0YQDqMx9D7rvIcsXfmJfvUYLoP722bgfBlO5cGvNVb5V/+Y7nhBE3mHV9OpxBf4eAS2S68KZztiPaWq4XYw==",
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 				"x64"
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@@ -562,9 +564,9 @@
 			}
 		},
 		"node_modules/@esbuild/darwin-arm64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.24.2.tgz",
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@@ -579,9 +581,9 @@
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 		},
 		"node_modules/@esbuild/darwin-x64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.24.2.tgz",
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 				"x64"
 			],
@@ -596,9 +598,9 @@
 			}
 		},
 		"node_modules/@esbuild/freebsd-arm64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.24.2.tgz",
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 			"cpu": [
 				"arm64"
 			],
@@ -613,9 +615,9 @@
 			}
 		},
 		"node_modules/@esbuild/freebsd-x64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.24.2.tgz",
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 			"cpu": [
 				"x64"
 			],
@@ -630,9 +632,9 @@
 			}
 		},
 		"node_modules/@esbuild/linux-arm": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.24.2.tgz",
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 				"arm"
 			],
@@ -647,9 +649,9 @@
 			}
 		},
 		"node_modules/@esbuild/linux-arm64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.24.2.tgz",
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 			],
@@ -664,9 +666,9 @@
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 		},
 		"node_modules/@esbuild/linux-ia32": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.24.2.tgz",
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+			"integrity": "sha512-sfv0tGPQhcZOgTKO3oBE9xpHuUqguHvSo4jl+wjnKwFpapx+vUDcawbwPNuBIAYdRAvIDBfZVvXprIj3HA+Ugw==",
 			"cpu": [
 				"ia32"
 			],
@@ -681,9 +683,9 @@
 			}
 		},
 		"node_modules/@esbuild/linux-loong64": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.24.2.tgz",
-			"integrity": "sha512-h///Lr5a9rib/v1GGqXVGzjL4TMvVTv+s1DPoxQdz7l/AYv6LDSxdIwzxkrPW438oUXiDtwM10o9PmwS/6Z0Ng==",
+			"integrity": "sha512-CN9AZr8kEndGooS35ntToZLTQLHEjtVB5n7dl8ZcTZMonJ7CCfStrYhrzF97eAecqVbVJ7APOEe18RPI4KLhwQ==",
 			"cpu": [
 				"loong64"
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+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/linux-riscv64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/linux-riscv64/-/linux-riscv64-0.25.12.tgz",
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+			"cpu": [
+				"riscv64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/linux-s390x": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.25.12.tgz",
+			"integrity": "sha512-MsKncOcgTNvdtiISc/jZs/Zf8d0cl/t3gYWX8J9ubBnVOwlk65UIEEvgBORTiljloIWnBzLs4qhzPkJcitIzIg==",
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+				"s390x"
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+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/linux-x64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/linux-x64/-/linux-x64-0.25.12.tgz",
+			"integrity": "sha512-uqZMTLr/zR/ed4jIGnwSLkaHmPjOjJvnm6TVVitAa08SLS9Z0VM8wIRx7gWbJB5/J54YuIMInDquWyYvQLZkgw==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"linux"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/netbsd-arm64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/netbsd-arm64/-/netbsd-arm64-0.25.12.tgz",
+			"integrity": "sha512-xXwcTq4GhRM7J9A8Gv5boanHhRa/Q9KLVmcyXHCTaM4wKfIpWkdXiMog/KsnxzJ0A1+nD+zoecuzqPmCRyBGjg==",
+			"cpu": [
+				"arm64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"netbsd"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/netbsd-x64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/netbsd-x64/-/netbsd-x64-0.25.12.tgz",
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+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"netbsd"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/openbsd-arm64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/openbsd-arm64/-/openbsd-arm64-0.25.12.tgz",
+			"integrity": "sha512-fF96T6KsBo/pkQI950FARU9apGNTSlZGsv1jZBAlcLL1MLjLNIWPBkj5NlSz8aAzYKg+eNqknrUJ24QBybeR5A==",
+			"cpu": [
+				"arm64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"openbsd"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/openbsd-x64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/openbsd-x64/-/openbsd-x64-0.25.12.tgz",
+			"integrity": "sha512-MZyXUkZHjQxUvzK7rN8DJ3SRmrVrke8ZyRusHlP+kuwqTcfWLyqMOE3sScPPyeIXN/mDJIfGXvcMqCgYKekoQw==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"openbsd"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/sunos-x64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/sunos-x64/-/sunos-x64-0.25.12.tgz",
+			"integrity": "sha512-3wGSCDyuTHQUzt0nV7bocDy72r2lI33QL3gkDNGkod22EsYl04sMf0qLb8luNKTOmgF/eDEDP5BFNwoBKH441w==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"sunos"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/win32-arm64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/win32-arm64/-/win32-arm64-0.25.12.tgz",
+			"integrity": "sha512-rMmLrur64A7+DKlnSuwqUdRKyd3UE7oPJZmnljqEptesKM8wx9J8gx5u0+9Pq0fQQW8vqeKebwNXdfOyP+8Bsg==",
+			"cpu": [
+				"arm64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/win32-ia32": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/win32-ia32/-/win32-ia32-0.25.12.tgz",
+			"integrity": "sha512-HkqnmmBoCbCwxUKKNPBixiWDGCpQGVsrQfJoVGYLPT41XWF8lHuE5N6WhVia2n4o5QK5M4tYr21827fNhi4byQ==",
+			"cpu": [
+				"ia32"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/@esbuild/win32-x64": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/@esbuild/win32-x64/-/win32-x64-0.25.12.tgz",
+			"integrity": "sha512-alJC0uCZpTFrSL0CCDjcgleBXPnCrEAhTBILpeAp7M/OFgoqtAetfBzX0xM00MUsVVPpVjlPuMbREqnZCXaTnA==",
+			"cpu": [
+				"x64"
+			],
+			"dev": true,
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			],
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/drizzle-kit/node_modules/esbuild": {
+			"version": "0.25.12",
+			"resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.25.12.tgz",
+			"integrity": "sha512-bbPBYYrtZbkt6Os6FiTLCTFxvq4tt3JKall1vRwshA3fdVztsLAatFaZobhkBC8/BrPetoa0oksYoKXoG4ryJg==",
+			"dev": true,
+			"hasInstallScript": true,
+			"license": "MIT",
+			"bin": {
+				"esbuild": "bin/esbuild"
+			},
+			"engines": {
+				"node": ">=18"
+			},
+			"optionalDependencies": {
+				"@esbuild/aix-ppc64": "0.25.12",
+				"@esbuild/android-arm": "0.25.12",
+				"@esbuild/android-arm64": "0.25.12",
+				"@esbuild/android-x64": "0.25.12",
+				"@esbuild/darwin-arm64": "0.25.12",
+				"@esbuild/darwin-x64": "0.25.12",
+				"@esbuild/freebsd-arm64": "0.25.12",
+				"@esbuild/freebsd-x64": "0.25.12",
+				"@esbuild/linux-arm": "0.25.12",
+				"@esbuild/linux-arm64": "0.25.12",
+				"@esbuild/linux-ia32": "0.25.12",
+				"@esbuild/linux-loong64": "0.25.12",
+				"@esbuild/linux-mips64el": "0.25.12",
+				"@esbuild/linux-ppc64": "0.25.12",
+				"@esbuild/linux-riscv64": "0.25.12",
+				"@esbuild/linux-s390x": "0.25.12",
+				"@esbuild/linux-x64": "0.25.12",
+				"@esbuild/netbsd-arm64": "0.25.12",
+				"@esbuild/netbsd-x64": "0.25.12",
+				"@esbuild/openbsd-arm64": "0.25.12",
+				"@esbuild/openbsd-x64": "0.25.12",
+				"@esbuild/openharmony-arm64": "0.25.12",
+				"@esbuild/sunos-x64": "0.25.12",
+				"@esbuild/win32-arm64": "0.25.12",
+				"@esbuild/win32-ia32": "0.25.12",
+				"@esbuild/win32-x64": "0.25.12"
+			}
+		},
 		"node_modules/drizzle-orm": {
 			"version": "0.45.1",
 			"resolved": "https://registry.npmjs.org/drizzle-orm/-/drizzle-orm-0.45.1.tgz",
@@ -3753,9 +4222,9 @@
 			}
 		},
 		"node_modules/esbuild": {
-			"version": "0.25.12",
+			"version": "0.24.2",
-			"resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.25.12.tgz",
+			"resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.24.2.tgz",
-			"integrity": "sha512-bbPBYYrtZbkt6Os6FiTLCTFxvq4tt3JKall1vRwshA3fdVztsLAatFaZobhkBC8/BrPetoa0oksYoKXoG4ryJg==",
+			"integrity": "sha512-+9egpBW8I3CD5XPe0n6BfT5fxLzxrlDzqydF3aviG+9ni1lDC/OvMHcxqEFV0+LANZG5R1bFMWfUrjVsdwxJvA==",
 			"dev": true,
 			"hasInstallScript": true,
 			"license": "MIT",
@@ -3766,32 +4235,31 @@
 				"node": ">=18"
 			},
 			"optionalDependencies": {
-				"@esbuild/aix-ppc64": "0.25.12",
+				"@esbuild/aix-ppc64": "0.24.2",
-				"@esbuild/android-arm": "0.25.12",
+				"@esbuild/android-arm": "0.24.2",
-				"@esbuild/android-arm64": "0.25.12",
+				"@esbuild/android-arm64": "0.24.2",
-				"@esbuild/android-x64": "0.25.12",
+				"@esbuild/android-x64": "0.24.2",
-				"@esbuild/darwin-arm64": "0.25.12",
+				"@esbuild/darwin-arm64": "0.24.2",
-				"@esbuild/darwin-x64": "0.25.12",
+				"@esbuild/darwin-x64": "0.24.2",
-				"@esbuild/freebsd-arm64": "0.25.12",
+				"@esbuild/freebsd-arm64": "0.24.2",
-				"@esbuild/freebsd-x64": "0.25.12",
+				"@esbuild/freebsd-x64": "0.24.2",
-				"@esbuild/linux-arm": "0.25.12",
+				"@esbuild/linux-arm": "0.24.2",
-				"@esbuild/linux-arm64": "0.25.12",
+				"@esbuild/linux-arm64": "0.24.2",
-				"@esbuild/linux-ia32": "0.25.12",
+				"@esbuild/linux-ia32": "0.24.2",
-				"@esbuild/linux-loong64": "0.25.12",
+				"@esbuild/linux-loong64": "0.24.2",
-				"@esbuild/linux-mips64el": "0.25.12",
+				"@esbuild/linux-mips64el": "0.24.2",
-				"@esbuild/linux-ppc64": "0.25.12",
+				"@esbuild/linux-ppc64": "0.24.2",
-				"@esbuild/linux-riscv64": "0.25.12",
+				"@esbuild/linux-riscv64": "0.24.2",
-				"@esbuild/linux-s390x": "0.25.12",
+				"@esbuild/linux-s390x": "0.24.2",
-				"@esbuild/linux-x64": "0.25.12",
+				"@esbuild/linux-x64": "0.24.2",
-				"@esbuild/netbsd-arm64": "0.25.12",
+				"@esbuild/netbsd-arm64": "0.24.2",
-				"@esbuild/netbsd-x64": "0.25.12",
+				"@esbuild/netbsd-x64": "0.24.2",
-				"@esbuild/openbsd-arm64": "0.25.12",
+				"@esbuild/openbsd-arm64": "0.24.2",
-				"@esbuild/openbsd-x64": "0.25.12",
+				"@esbuild/openbsd-x64": "0.24.2",
-				"@esbuild/openharmony-arm64": "0.25.12",
+				"@esbuild/sunos-x64": "0.24.2",
-				"@esbuild/sunos-x64": "0.25.12",
+				"@esbuild/win32-arm64": "0.24.2",
-				"@esbuild/win32-arm64": "0.25.12",
+				"@esbuild/win32-ia32": "0.24.2",
-				"@esbuild/win32-ia32": "0.25.12",
+				"@esbuild/win32-x64": "0.24.2"
-				"@esbuild/win32-x64": "0.25.12"
 			}
 		},
 		"node_modules/escape-html": {
@@ -6527,6 +6995,84 @@
 				"source-map": "^0.6.0"
 			}
 		},
+		"node_modules/sqlite-vec": {
+			"version": "0.1.9",
+			"resolved": "https://registry.npmjs.org/sqlite-vec/-/sqlite-vec-0.1.9.tgz",
+			"integrity": "sha512-L7XJWRIBNvR9O5+vh1FQ+IGkh/3D2AzVksW5gdtk28m78Hy8skFD0pqReKH1Yp0/BUKRGcffgKvyO/EON5JXpA==",
+			"license": "MIT OR Apache",
+			"optionalDependencies": {
+				"sqlite-vec-darwin-arm64": "0.1.9",
+				"sqlite-vec-darwin-x64": "0.1.9",
+				"sqlite-vec-linux-arm64": "0.1.9",
+				"sqlite-vec-linux-x64": "0.1.9",
+				"sqlite-vec-windows-x64": "0.1.9"
+			}
+		},
+		"node_modules/sqlite-vec-darwin-arm64": {
+			"version": "0.1.9",
+			"resolved": "https://registry.npmjs.org/sqlite-vec-darwin-arm64/-/sqlite-vec-darwin-arm64-0.1.9.tgz",
+			"integrity": "sha512-jSsZpE42OfBkGL/ItyJTVCUwl6o6Ka3U5rc4j+UBDIQzC1ulSSKMEhQLthsOnF/MdAf1MuAkYhkdKmmcjaIZQg==",
+			"cpu": [
+				"arm64"
+			],
+			"license": "MIT OR Apache",
+			"optional": true,
+			"os": [
+				"darwin"
+			]
+		},
+		"node_modules/sqlite-vec-darwin-x64": {
+			"version": "0.1.9",
+			"resolved": "https://registry.npmjs.org/sqlite-vec-darwin-x64/-/sqlite-vec-darwin-x64-0.1.9.tgz",
+			"integrity": "sha512-KDlVyqQT7pnOhU1ymB9gs7dMbSoVmKHitT+k1/xkjarcX8bBqPxWrGlK/R+C5WmWkfvWwyq5FfXfiBYCBs6PlA==",
+			"cpu": [
+				"x64"
+			],
+			"license": "MIT OR Apache",
+			"optional": true,
+			"os": [
+				"darwin"
+			]
+		},
+		"node_modules/sqlite-vec-linux-arm64": {
+			"version": "0.1.9",
+			"resolved": "https://registry.npmjs.org/sqlite-vec-linux-arm64/-/sqlite-vec-linux-arm64-0.1.9.tgz",
+			"integrity": "sha512-5wXVJ9c9kR4CHm/wVqXb/R+XUHTdpZ4nWbPHlS+gc9qQFVHs92Km4bPnCKX4rtcPMzvNis+SIzMJR1SCEwpuUw==",
+			"cpu": [
+				"arm64"
+			],
+			"license": "MIT OR Apache",
+			"optional": true,
+			"os": [
+				"linux"
+			]
+		},
+		"node_modules/sqlite-vec-linux-x64": {
+			"version": "0.1.9",
+			"resolved": "https://registry.npmjs.org/sqlite-vec-linux-x64/-/sqlite-vec-linux-x64-0.1.9.tgz",
+			"integrity": "sha512-w3tCH8xK2finW8fQJ/m8uqKodXUZ9KAuAar2UIhz4BHILfpE0WM/MTGCRfa7RjYbrYim5Luk3guvMOGI7T7JQA==",
+			"cpu": [
+				"x64"
+			],
+			"license": "MIT OR Apache",
+			"optional": true,
+			"os": [
+				"linux"
+			]
+		},
+		"node_modules/sqlite-vec-windows-x64": {
+			"version": "0.1.9",
+			"resolved": "https://registry.npmjs.org/sqlite-vec-windows-x64/-/sqlite-vec-windows-x64-0.1.9.tgz",
+			"integrity": "sha512-y3gEIyy/17bq2QFPQOWLE68TYWcRZkBQVA2XLrTPHNTOp55xJi/BBBmOm40tVMDMjtP+Elpk6UBUXdaq+46b0Q==",
+			"cpu": [
+				"x64"
+			],
+			"license": "MIT OR Apache",
+			"optional": true,
+			"os": [
+				"win32"
+			]
+		},
 		"node_modules/stackback": {
 			"version": "0.0.2",
 			"resolved": "https://registry.npmjs.org/stackback/-/stackback-0.0.2.tgz",

package.json

@@ -56,6 +56,7 @@
 		"@modelcontextprotocol/sdk": "^1.27.1",
 		"@xenova/transformers": "^2.17.2",
 		"better-sqlite3": "^12.6.2",
+		"sqlite-vec": "^0.1.9",
 		"zod": "^4.3.6"
 	}
 }

scripts/build-workers.mjs

@@ -3,7 +3,8 @@ import { existsSync } from 'node:fs';
 
 const entries = [
 	'src/lib/server/pipeline/worker-entry.ts',
-	'src/lib/server/pipeline/embed-worker-entry.ts'
+	'src/lib/server/pipeline/embed-worker-entry.ts',
+	'src/lib/server/pipeline/write-worker-entry.ts'
 ];
 
 try {

src/lib/components/IndexingProgress.svelte

@@ -7,39 +7,33 @@
 
 	$effect(() => {
 		job = null;
-		let stopped = false;
+		const es = new EventSource(`/api/v1/jobs/${jobId}/stream`);
-		let completeFired = false;
 
-		async function poll() {
+		es.addEventListener('job-progress', (event) => {
-			if (stopped) return;
+			const data = JSON.parse(event.data);
-			try {
+			job = { ...job, ...data } as IndexingJob;
-				const res = await fetch(`/api/v1/jobs/${jobId}`);
+		});
-				if (res.ok) {
-					const data = await res.json();
-					job = data.job;
-					if (!completeFired && (job?.status === 'done' || job?.status === 'failed')) {
-						completeFired = true;
-						oncomplete?.();
-					}
-				}
-			} catch {
-				// ignore transient errors
-			}
-		}
 
-		void poll();
+		es.addEventListener('job-done', () => {
-		const interval = setInterval(() => {
+			void fetch(`/api/v1/jobs/${jobId}`)
-			if (job?.status === 'done' || job?.status === 'failed') {
+				.then(r => r.json())
-				clearInterval(interval);
+				.then(d => { job = d.job; oncomplete?.(); });
-				return;
+			es.close();
-			}
+		});
-			void poll();
-		}, 2000);
 
-		return () => {
+		es.addEventListener('job-failed', (event) => {
-			stopped = true;
+			const data = JSON.parse(event.data);
-			clearInterval(interval);
+			if (job) job = { ...job, status: 'failed', error: data.error ?? 'Unknown error' } as IndexingJob;
+			oncomplete?.();
+			es.close();
+		});
+
+		es.onerror = () => {
+			es.close();
+			void fetch(`/api/v1/jobs/${jobId}`).then(r => r.json()).then(d => { job = d.job; });
 		};
+
+		return () => es.close();
 	});
 
 	const progress = $derived(job?.progress ?? 0);

src/lib/components/admin/JobSkeleton.svelte

@@ -0,0 +1,19 @@
+<script lang="ts">
+	let { rows = 5 }: { rows?: number } = $props();
+</script>
+
+{#each Array(rows) as _, i (i)}
+	<tr>
+		<td class="px-6 py-4">
+			<div class="h-4 w-48 animate-pulse rounded bg-gray-200"></div>
+			<div class="mt-1 h-3 w-24 animate-pulse rounded bg-gray-100"></div>
+		</td>
+		<td class="px-6 py-4"><div class="h-5 w-16 animate-pulse rounded-full bg-gray-200"></div></td>
+		<td class="px-6 py-4"><div class="h-4 w-20 animate-pulse rounded bg-gray-200"></div></td>
+		<td class="px-6 py-4"><div class="h-2 w-32 animate-pulse rounded-full bg-gray-200"></div></td>
+		<td class="px-6 py-4"><div class="h-4 w-28 animate-pulse rounded bg-gray-200"></div></td>
+		<td class="px-6 py-4 text-right"
+			><div class="ml-auto h-7 w-20 animate-pulse rounded bg-gray-200"></div></td
+		>
+	</tr>
+{/each}

src/lib/components/admin/JobStatusBadge.svelte

@@ -1,9 +1,10 @@
 <script lang="ts">
 	interface Props {
 		status: 'queued' | 'running' | 'paused' | 'cancelled' | 'done' | 'failed';
+		spinning?: boolean;
 	}
 
-	let { status }: Props = $props();
+	let { status, spinning = false }: Props = $props();
 
 	const statusConfig: Record<typeof status, { bg: string; text: string; label: string }> = {
 		queued: { bg: 'bg-blue-100', text: 'text-blue-800', label: 'Queued' },
@@ -21,4 +22,9 @@
 	class="inline-flex items-center rounded-full px-2.5 py-0.5 text-xs font-medium {config.bg} {config.text}"
 >
 	{config.label}
+	{#if spinning}
+		<span
+			class="ml-1 inline-block h-3 w-3 animate-spin rounded-full border-2 border-current border-r-transparent"
+		></span>
+	{/if}
 </span>

src/lib/components/admin/Toast.svelte

@@ -0,0 +1,77 @@
+<script lang="ts">
+	import { onDestroy } from 'svelte';
+
+	export interface ToastItem {
+		id: string;
+		message: string;
+		type: 'success' | 'error' | 'info';
+	}
+
+	let { toasts = $bindable([]) }: { toasts: ToastItem[] } = $props();
+	const timers = new Map<string, ReturnType<typeof setTimeout>>();
+
+	$effect(() => {
+		for (const toast of toasts) {
+			if (timers.has(toast.id)) {
+				continue;
+			}
+
+			const timer = setTimeout(() => {
+				dismiss(toast.id);
+			}, 4000);
+
+			timers.set(toast.id, timer);
+		}
+
+		for (const [id, timer] of timers.entries()) {
+			if (toasts.some((toast) => toast.id === id)) {
+				continue;
+			}
+
+			clearTimeout(timer);
+			timers.delete(id);
+		}
+	});
+
+	onDestroy(() => {
+		for (const timer of timers.values()) {
+			clearTimeout(timer);
+		}
+		timers.clear();
+	});
+
+	function dismiss(id: string) {
+		const timer = timers.get(id);
+		if (timer) {
+			clearTimeout(timer);
+			timers.delete(id);
+		}
+
+		toasts = toasts.filter((toast: ToastItem) => toast.id !== id);
+	}
+</script>
+
+<div class="fixed right-4 bottom-4 z-50 flex flex-col gap-2">
+	{#each toasts as toast (toast.id)}
+		<div
+			role="status"
+			aria-live="polite"
+			class="flex items-center gap-3 rounded-lg px-4 py-3 shadow-lg {toast.type === 'error'
+				? 'bg-red-600 text-white'
+				: toast.type === 'info'
+					? 'bg-blue-600 text-white'
+					: 'bg-green-600 text-white'}"
+		>
+			<span class="text-sm">{toast.message}</span>
+			<button
+				type="button"
+				aria-label="Dismiss notification"
+				onclick={() => dismiss(toast.id)}
+				class="ml-2 text-xs opacity-70 hover:opacity-100"
+			>
+				x
+			</button
+			>
+		</div>
+	{/each}
+</div>

src/lib/components/admin/WorkerStatusPanel.svelte

@@ -0,0 +1,81 @@
+<script lang="ts">
+	interface WorkerStatus {
+		index: number;
+		state: 'idle' | 'running';
+		jobId: string | null;
+		repositoryId: string | null;
+		versionId: string | null;
+	}
+
+	interface WorkersResponse {
+		concurrency: number;
+		active: number;
+		idle: number;
+		workers: WorkerStatus[];
+	}
+
+	let status = $state<WorkersResponse>({ concurrency: 0, active: 0, idle: 0, workers: [] });
+	let pollInterval: ReturnType<typeof setInterval> | null = null;
+
+	async function fetchStatus() {
+		try {
+			const res = await fetch('/api/v1/workers');
+			if (res.ok) status = await res.json();
+		} catch {
+			/* ignore */
+		}
+	}
+
+	$effect(() => {
+		void fetchStatus();
+		const es = new EventSource('/api/v1/jobs/stream');
+		es.addEventListener('worker-status', (event) => {
+			try {
+				status = JSON.parse(event.data);
+			} catch {
+				/* ignore */
+			}
+		});
+		es.onerror = () => {
+			es.close();
+			if (!pollInterval) {
+				pollInterval = setInterval(() => void fetchStatus(), 5000);
+			}
+		};
+		return () => {
+			es.close();
+			if (pollInterval) {
+				clearInterval(pollInterval);
+				pollInterval = null;
+			}
+		};
+	});
+</script>
+
+{#if status.concurrency > 0}
+	<div class="mb-4 rounded-lg border border-gray-200 bg-white p-4 shadow-sm">
+		<div class="mb-2 flex items-center justify-between">
+			<h3 class="text-sm font-semibold text-gray-700">Workers</h3>
+			<span class="text-xs text-gray-500">{status.active} / {status.concurrency} active</span>
+		</div>
+		<div class="space-y-1">
+			{#each status.workers as worker (worker.index)}
+				<div class="flex items-center gap-2 text-xs">
+					<span
+						class="flex h-2 w-2 rounded-full {worker.state === 'running'
+							? 'animate-pulse bg-green-500'
+							: 'bg-gray-300'}"
+					></span>
+					<span class="text-gray-600">Worker {worker.index}</span>
+					{#if worker.state === 'running' && worker.repositoryId}
+						<span class="truncate text-gray-400"
+							>{worker.repositoryId}{worker.versionId ? ' / ' + worker.versionId : ''}</span
+						>
+					{:else}
+						<span class="text-gray-400">idle</span>
+					{/if}
+				</div>
+			{/each}
+		</div>
+	</div>
+{/if}

src/lib/server/db/client.ts

@@ -4,6 +4,7 @@
  */
 import Database from 'better-sqlite3';
 import { env } from '$env/dynamic/private';
+import { loadSqliteVec } from './sqlite-vec';
 
 let _client: Database.Database | null = null;
 
@@ -14,6 +15,12 @@ export function getClient(): Database.Database {
 		_client.pragma('journal_mode = WAL');
 		_client.pragma('foreign_keys = ON');
 		_client.pragma('busy_timeout = 5000');
+		_client.pragma('synchronous = NORMAL');
+		_client.pragma('cache_size = -65536');
+		_client.pragma('temp_store = MEMORY');
+		_client.pragma('mmap_size = 268435456');
+		_client.pragma('wal_autocheckpoint = 1000');
+		loadSqliteVec(_client);
 	}
 	return _client;
 }

src/lib/server/db/index.ts

@@ -5,6 +5,7 @@ import { readFileSync } from 'node:fs';
 import { fileURLToPath } from 'node:url';
 import { join, dirname } from 'node:path';
 import * as schema from './schema';
+import { loadSqliteVec } from './sqlite-vec';
 import { env } from '$env/dynamic/private';
 
 if (!env.DATABASE_URL) throw new Error('DATABASE_URL is not set');
@@ -19,6 +20,12 @@ client.pragma('foreign_keys = ON');
 // Prevents SQLITE_BUSY errors when the indexing pipeline holds the write lock
 // and an HTTP request arrives simultaneously.
 client.pragma('busy_timeout = 5000');
+client.pragma('synchronous = NORMAL');
+client.pragma('cache_size = -65536');
+client.pragma('temp_store = MEMORY');
+client.pragma('mmap_size = 268435456');
+client.pragma('wal_autocheckpoint = 1000');
+loadSqliteVec(client);
 
 export const db = drizzle(client, { schema });
 

src/lib/server/db/migrations/0006_yielding_centennial.sql

@@ -0,0 +1,6 @@
+CREATE INDEX `idx_embeddings_profile` ON `snippet_embeddings` (`profile_id`,`snippet_id`);--> statement-breakpoint
+CREATE INDEX `idx_documents_repo_version` ON `documents` (`repository_id`,`version_id`);--> statement-breakpoint
+CREATE INDEX `idx_jobs_repo_status` ON `indexing_jobs` (`repository_id`,`status`);--> statement-breakpoint
+CREATE INDEX `idx_repositories_state` ON `repositories` (`state`);--> statement-breakpoint
+CREATE INDEX `idx_snippets_repo_version` ON `snippets` (`repository_id`,`version_id`);--> statement-breakpoint
+CREATE INDEX `idx_snippets_repo_type` ON `snippets` (`repository_id`,`type`);

src/lib/server/db/migrations/meta/0006_snapshot.json

@@ -0,0 +1,948 @@
+{
+  "version": "6",
+  "dialect": "sqlite",
+  "id": "b8998bda-f89b-41bc-b923-3f676d153c79",
+  "prevId": "c326dcbe-1771-4a90-a566-0ebd1eca47ec",
+  "tables": {
+    "documents": {
+      "name": "documents",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "repository_id": {
+          "name": "repository_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "version_id": {
+          "name": "version_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "file_path": {
+          "name": "file_path",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "language": {
+          "name": "language",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "token_count": {
+          "name": "token_count",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "checksum": {
+          "name": "checksum",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "indexed_at": {
+          "name": "indexed_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "idx_documents_repo_version": {
+          "name": "idx_documents_repo_version",
+          "columns": [
+            "repository_id",
+            "version_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "documents_repository_id_repositories_id_fk": {
+          "name": "documents_repository_id_repositories_id_fk",
+          "tableFrom": "documents",
+          "tableTo": "repositories",
+          "columnsFrom": [
+            "repository_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "documents_version_id_repository_versions_id_fk": {
+          "name": "documents_version_id_repository_versions_id_fk",
+          "tableFrom": "documents",
+          "tableTo": "repository_versions",
+          "columnsFrom": [
+            "version_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "embedding_profiles": {
+      "name": "embedding_profiles",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "provider_kind": {
+          "name": "provider_kind",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "enabled": {
+          "name": "enabled",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": true
+        },
+        "is_default": {
+          "name": "is_default",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "model": {
+          "name": "model",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "dimensions": {
+          "name": "dimensions",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "config": {
+          "name": "config",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "indexing_jobs": {
+      "name": "indexing_jobs",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "repository_id": {
+          "name": "repository_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "version_id": {
+          "name": "version_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'queued'"
+        },
+        "progress": {
+          "name": "progress",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "total_files": {
+          "name": "total_files",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "processed_files": {
+          "name": "processed_files",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "stage": {
+          "name": "stage",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'queued'"
+        },
+        "stage_detail": {
+          "name": "stage_detail",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "error": {
+          "name": "error",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "started_at": {
+          "name": "started_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "completed_at": {
+          "name": "completed_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "idx_jobs_repo_status": {
+          "name": "idx_jobs_repo_status",
+          "columns": [
+            "repository_id",
+            "status"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "indexing_jobs_repository_id_repositories_id_fk": {
+          "name": "indexing_jobs_repository_id_repositories_id_fk",
+          "tableFrom": "indexing_jobs",
+          "tableTo": "repositories",
+          "columnsFrom": [
+            "repository_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "repositories": {
+      "name": "repositories",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "source": {
+          "name": "source",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "source_url": {
+          "name": "source_url",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "branch": {
+          "name": "branch",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'main'"
+        },
+        "state": {
+          "name": "state",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "total_snippets": {
+          "name": "total_snippets",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "total_tokens": {
+          "name": "total_tokens",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "trust_score": {
+          "name": "trust_score",
+          "type": "real",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "benchmark_score": {
+          "name": "benchmark_score",
+          "type": "real",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "stars": {
+          "name": "stars",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "github_token": {
+          "name": "github_token",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "last_indexed_at": {
+          "name": "last_indexed_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "idx_repositories_state": {
+          "name": "idx_repositories_state",
+          "columns": [
+            "state"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "repository_configs": {
+      "name": "repository_configs",
+      "columns": {
+        "repository_id": {
+          "name": "repository_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "version_id": {
+          "name": "version_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "project_title": {
+          "name": "project_title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "folders": {
+          "name": "folders",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "exclude_folders": {
+          "name": "exclude_folders",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "exclude_files": {
+          "name": "exclude_files",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "rules": {
+          "name": "rules",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "previous_versions": {
+          "name": "previous_versions",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "uniq_repo_config_base": {
+          "name": "uniq_repo_config_base",
+          "columns": [
+            "repository_id"
+          ],
+          "isUnique": true,
+          "where": "\"repository_configs\".\"version_id\" IS NULL"
+        },
+        "uniq_repo_config_version": {
+          "name": "uniq_repo_config_version",
+          "columns": [
+            "repository_id",
+            "version_id"
+          ],
+          "isUnique": true,
+          "where": "\"repository_configs\".\"version_id\" IS NOT NULL"
+        }
+      },
+      "foreignKeys": {
+        "repository_configs_repository_id_repositories_id_fk": {
+          "name": "repository_configs_repository_id_repositories_id_fk",
+          "tableFrom": "repository_configs",
+          "tableTo": "repositories",
+          "columnsFrom": [
+            "repository_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "repository_versions": {
+      "name": "repository_versions",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "repository_id": {
+          "name": "repository_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "tag": {
+          "name": "tag",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "commit_hash": {
+          "name": "commit_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "state": {
+          "name": "state",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "total_snippets": {
+          "name": "total_snippets",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "indexed_at": {
+          "name": "indexed_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "repository_versions_repository_id_repositories_id_fk": {
+          "name": "repository_versions_repository_id_repositories_id_fk",
+          "tableFrom": "repository_versions",
+          "tableTo": "repositories",
+          "columnsFrom": [
+            "repository_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "settings": {
+      "name": "settings",
+      "columns": {
+        "key": {
+          "name": "key",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "value": {
+          "name": "value",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "snippet_embeddings": {
+      "name": "snippet_embeddings",
+      "columns": {
+        "snippet_id": {
+          "name": "snippet_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "profile_id": {
+          "name": "profile_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "model": {
+          "name": "model",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "dimensions": {
+          "name": "dimensions",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "embedding": {
+          "name": "embedding",
+          "type": "blob",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "idx_embeddings_profile": {
+          "name": "idx_embeddings_profile",
+          "columns": [
+            "profile_id",
+            "snippet_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "snippet_embeddings_snippet_id_snippets_id_fk": {
+          "name": "snippet_embeddings_snippet_id_snippets_id_fk",
+          "tableFrom": "snippet_embeddings",
+          "tableTo": "snippets",
+          "columnsFrom": [
+            "snippet_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "snippet_embeddings_profile_id_embedding_profiles_id_fk": {
+          "name": "snippet_embeddings_profile_id_embedding_profiles_id_fk",
+          "tableFrom": "snippet_embeddings",
+          "tableTo": "embedding_profiles",
+          "columnsFrom": [
+            "profile_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "snippet_embeddings_snippet_id_profile_id_pk": {
+          "columns": [
+            "snippet_id",
+            "profile_id"
+          ],
+          "name": "snippet_embeddings_snippet_id_profile_id_pk"
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "snippets": {
+      "name": "snippets",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "document_id": {
+          "name": "document_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "repository_id": {
+          "name": "repository_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "version_id": {
+          "name": "version_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "type": {
+          "name": "type",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "content": {
+          "name": "content",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "language": {
+          "name": "language",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "breadcrumb": {
+          "name": "breadcrumb",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "token_count": {
+          "name": "token_count",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "idx_snippets_repo_version": {
+          "name": "idx_snippets_repo_version",
+          "columns": [
+            "repository_id",
+            "version_id"
+          ],
+          "isUnique": false
+        },
+        "idx_snippets_repo_type": {
+          "name": "idx_snippets_repo_type",
+          "columns": [
+            "repository_id",
+            "type"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "snippets_document_id_documents_id_fk": {
+          "name": "snippets_document_id_documents_id_fk",
+          "tableFrom": "snippets",
+          "tableTo": "documents",
+          "columnsFrom": [
+            "document_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "snippets_repository_id_repositories_id_fk": {
+          "name": "snippets_repository_id_repositories_id_fk",
+          "tableFrom": "snippets",
+          "tableTo": "repositories",
+          "columnsFrom": [
+            "repository_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "snippets_version_id_repository_versions_id_fk": {
+          "name": "snippets_version_id_repository_versions_id_fk",
+          "tableFrom": "snippets",
+          "tableTo": "repository_versions",
+          "columnsFrom": [
+            "version_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    }
+  },
+  "views": {},
+  "enums": {},
+  "_meta": {
+    "schemas": {},
+    "tables": {},
+    "columns": {}
+  },
+  "internal": {
+    "indexes": {}
+  }
+}

src/lib/server/db/migrations/meta/_journal.json

@@ -43,6 +43,13 @@
       "when": 1774890536284,
       "tag": "0005_fix_stage_defaults",
       "breakpoints": true
+    },
+    {
+      "idx": 6,
+      "version": "6",
+      "when": 1775038799913,
+      "tag": "0006_yielding_centennial",
+      "breakpoints": true
     }
   ]
 }

src/lib/server/db/schema.test.ts

@@ -6,6 +6,7 @@ import { readFileSync } from 'node:fs';
 import { join } from 'node:path';
 import { eq } from 'drizzle-orm';
 import * as schema from './schema';
+import { loadSqliteVec, sqliteVecRowidTableName, sqliteVecTableName } from './sqlite-vec';
 import {
 	repositories,
 	repositoryVersions,
@@ -24,6 +25,7 @@ import {
 function createTestDb() {
 	const client = new Database(':memory:');
 	client.pragma('foreign_keys = ON');
+	loadSqliteVec(client);
 
 	const db = drizzle(client, { schema });
 
@@ -266,10 +268,11 @@ describe('snippets table', () => {
 
 describe('snippet_embeddings table', () => {
 	let db: ReturnType<typeof createTestDb>['db'];
+	let client: Database.Database;
 	let snippetId: string;
 
 	beforeEach(() => {
-		({ db } = createTestDb());
+		({ db, client } = createTestDb());
 		db.insert(repositories).values(makeRepo()).run();
 		const docId = crypto.randomUUID();
 		db.insert(documents)
@@ -344,6 +347,30 @@ describe('snippet_embeddings table', () => {
 		const result = db.select().from(snippetEmbeddings).all();
 		expect(result).toHaveLength(0);
 	});
+
+	it('keeps the relational schema free of vec_embedding and retains the profile index', () => {
+		const columns = client
+			.prepare("PRAGMA table_info('snippet_embeddings')")
+			.all() as Array<{ name: string }>;
+		expect(columns.map((column) => column.name)).not.toContain('vec_embedding');
+
+		const indexes = client
+			.prepare("PRAGMA index_list('snippet_embeddings')")
+			.all() as Array<{ name: string }>;
+		expect(indexes.map((index) => index.name)).toContain('idx_embeddings_profile');
+	});
+
+	it('loads sqlite-vec idempotently and derives deterministic per-profile table names', () => {
+		expect(() => loadSqliteVec(client)).not.toThrow();
+		const tableName = sqliteVecTableName('local-default');
+		const rowidTableName = sqliteVecRowidTableName('local-default');
+
+		expect(tableName).toMatch(/^snippet_embeddings_vec_local_default_[0-9a-f]{8}$/);
+		expect(rowidTableName).toMatch(/^snippet_embeddings_vec_rowids_local_default_[0-9a-f]{8}$/);
+		expect(sqliteVecTableName('local-default')).toBe(tableName);
+		expect(sqliteVecRowidTableName('local-default')).toBe(rowidTableName);
+		expect(sqliteVecTableName('local-default')).not.toBe(sqliteVecTableName('openai/custom'));
+	});
 });
 
 describe('indexing_jobs table', () => {

src/lib/server/db/schema.ts

@@ -1,6 +1,7 @@
 import { sql } from 'drizzle-orm';
 import {
 	blob,
+	index,
 	integer,
 	primaryKey,
 	real,
@@ -34,7 +35,7 @@ export const repositories = sqliteTable('repositories', {
 	lastIndexedAt: integer('last_indexed_at', { mode: 'timestamp' }),
 	createdAt: integer('created_at', { mode: 'timestamp' }).notNull(),
 	updatedAt: integer('updated_at', { mode: 'timestamp' }).notNull()
-});
+}, (t) => [index('idx_repositories_state').on(t.state)]);
 
 // ---------------------------------------------------------------------------
 // repository_versions
@@ -72,7 +73,7 @@ export const documents = sqliteTable('documents', {
 	tokenCount: integer('token_count').default(0),
 	checksum: text('checksum').notNull(), // SHA-256 of file content
 	indexedAt: integer('indexed_at', { mode: 'timestamp' }).notNull()
-});
+}, (t) => [index('idx_documents_repo_version').on(t.repositoryId, t.versionId)]);
 
 // ---------------------------------------------------------------------------
 // snippets
@@ -93,7 +94,10 @@ export const snippets = sqliteTable('snippets', {
 	breadcrumb: text('breadcrumb'), // e.g. "Installation > Getting Started"
 	tokenCount: integer('token_count').default(0),
 	createdAt: integer('created_at', { mode: 'timestamp' }).notNull()
-});
+}, (t) => [
+	index('idx_snippets_repo_version').on(t.repositoryId, t.versionId),
+	index('idx_snippets_repo_type').on(t.repositoryId, t.type),
+]);
 
 // ---------------------------------------------------------------------------
 // embedding_profiles
@@ -128,7 +132,10 @@ export const snippetEmbeddings = sqliteTable(
 		embedding: blob('embedding').notNull(), // Float32Array as binary blob
 		createdAt: integer('created_at').notNull()
 	},
-	(table) => [primaryKey({ columns: [table.snippetId, table.profileId] })]
+	(table) => [
+		primaryKey({ columns: [table.snippetId, table.profileId] }),
+		index('idx_embeddings_profile').on(table.profileId, table.snippetId),
+	]
 );
 
 // ---------------------------------------------------------------------------
@@ -154,7 +161,7 @@ export const indexingJobs = sqliteTable('indexing_jobs', {
 	startedAt: integer('started_at', { mode: 'timestamp' }),
 	completedAt: integer('completed_at', { mode: 'timestamp' }),
 	createdAt: integer('created_at', { mode: 'timestamp' }).notNull()
-});
+}, (t) => [index('idx_jobs_repo_status').on(t.repositoryId, t.status)]);
 
 // ---------------------------------------------------------------------------
 // repository_configs

src/lib/server/db/sqlite-vec.ts

@@ -0,0 +1,49 @@
+import type Database from 'better-sqlite3';
+import * as sqliteVec from 'sqlite-vec';
+
+const loadedConnections = new WeakSet<Database.Database>();
+
+function stableHash(value: string): string {
+	let hash = 2166136261;
+
+	for (let index = 0; index < value.length; index += 1) {
+		hash ^= value.charCodeAt(index);
+		hash = Math.imul(hash, 16777619);
+	}
+
+	return (hash >>> 0).toString(16).padStart(8, '0');
+}
+
+function sanitizeIdentifierPart(value: string): string {
+	const sanitized = value
+		.toLowerCase()
+		.replace(/[^a-z0-9]+/g, '_')
+		.replace(/^_+|_+$/g, '');
+
+	return sanitized.length > 0 ? sanitized.slice(0, 32) : 'profile';
+}
+
+export function sqliteVecTableSuffix(profileId: string): string {
+	return `${sanitizeIdentifierPart(profileId)}_${stableHash(profileId)}`;
+}
+
+export function sqliteVecTableName(profileId: string): string {
+	return `snippet_embeddings_vec_${sqliteVecTableSuffix(profileId)}`;
+}
+
+export function sqliteVecRowidTableName(profileId: string): string {
+	return `snippet_embeddings_vec_rowids_${sqliteVecTableSuffix(profileId)}`;
+}
+
+export function quoteSqliteIdentifier(identifier: string): string {
+	return `"${identifier.replace(/"/g, '""')}"`;
+}
+
+export function loadSqliteVec(db: Database.Database): void {
+	if (loadedConnections.has(db)) {
+		return;
+	}
+
+	sqliteVec.load(db);
+	loadedConnections.add(db);
+}

src/lib/server/db/vectors.sql

@@ -0,0 +1,2 @@
+-- Relational vec_embedding bootstrap removed in iteration 2.
+-- Downstream sqlite-vec vec0 tables are created on demand in application code.

src/lib/server/embeddings/embedding.service.test.ts

@@ -12,6 +12,12 @@ import { migrate } from 'drizzle-orm/better-sqlite3/migrator';
 import { readFileSync } from 'node:fs';
 import { join } from 'node:path';
 import * as schema from '../db/schema.js';
+import {
+	loadSqliteVec,
+	sqliteVecRowidTableName,
+	sqliteVecTableName
+} from '../db/sqlite-vec.js';
+import { SqliteVecStore } from '../search/sqlite-vec.store.js';
 
 import { NoopEmbeddingProvider, EmbeddingError, type EmbeddingVector } from './provider.js';
 import { OpenAIEmbeddingProvider } from './openai.provider.js';
@@ -31,6 +37,7 @@ import { createProviderFromProfile } from './registry.js';
 function createTestDb() {
 	const client = new Database(':memory:');
 	client.pragma('foreign_keys = ON');
+	loadSqliteVec(client);
 
 	const db = drizzle(client, { schema });
 	const migrationsFolder = join(import.meta.dirname, '../db/migrations');
@@ -387,10 +394,19 @@ describe('EmbeddingService', () => {
 			embedding: Buffer;
 			profile_id: string;
 		};
+		expect((row as Record<string, unknown>).vec_embedding).toBeUndefined();
 		expect(row.model).toBe('test-model');
 		expect(row.dimensions).toBe(4);
 		expect(row.profile_id).toBe('local-default');
 		expect(row.embedding).toBeInstanceOf(Buffer);
+
+		const queryEmbedding = service.getEmbedding(snippetId, 'local-default');
+		const matches = new SqliteVecStore(client).queryNearestNeighbors(queryEmbedding!, {
+			repositoryId: '/test/embed-repo',
+			profileId: 'local-default',
+			limit: 5
+		});
+		expect(matches[0]?.snippetId).toBe(snippetId);
 	});
 
 	it('stores embeddings as retrievable Float32Array blobs', async () => {
@@ -436,6 +452,22 @@ describe('EmbeddingService', () => {
 			.prepare('SELECT profile_id FROM snippet_embeddings WHERE snippet_id = ?')
 			.get(snippetId) as { profile_id: string };
 		expect(row.profile_id).toBe('openai-custom');
+
+		const queryEmbedding = service.getEmbedding(snippetId, 'openai-custom');
+		const store = new SqliteVecStore(client);
+		const customMatches = store.queryNearestNeighbors(queryEmbedding!, {
+			repositoryId: '/test/embed-repo',
+			profileId: 'openai-custom',
+			limit: 5
+		});
+		const defaultMatches = store.queryNearestNeighbors(new Float32Array([1, 0, 0, 0]), {
+			repositoryId: '/test/embed-repo',
+			profileId: 'local-default',
+			limit: 5
+		});
+
+		expect(customMatches[0]?.snippetId).toBe(snippetId);
+		expect(defaultMatches).toHaveLength(0);
 	});
 
 	it('is idempotent — re-embedding replaces the existing row', async () => {
@@ -450,6 +482,17 @@ describe('EmbeddingService', () => {
 			.prepare('SELECT COUNT(*) as cnt FROM snippet_embeddings WHERE snippet_id = ?')
 			.get(snippetId) as { cnt: number };
 		expect(rows.cnt).toBe(1);
+
+		const vecTable = sqliteVecTableName('local-default');
+		const rowidTable = sqliteVecRowidTableName('local-default');
+		const vecRows = client.prepare(`SELECT COUNT(*) as cnt FROM "${vecTable}"`).get() as {
+			cnt: number;
+		};
+		const rowidRows = client.prepare(`SELECT COUNT(*) as cnt FROM "${rowidTable}"`).get() as {
+			cnt: number;
+		};
+		expect(vecRows.cnt).toBe(1);
+		expect(rowidRows.cnt).toBe(1);
 	});
 
 	it('calls onProgress after each batch', async () => {

src/lib/server/embeddings/embedding.service.ts

@@ -5,6 +5,7 @@
 
 import type Database from 'better-sqlite3';
 import type { EmbeddingProvider } from './provider.js';
+import { SqliteVecStore } from '$lib/server/search/sqlite-vec.store.js';
 
 interface SnippetRow {
 	id: string;
@@ -17,11 +18,15 @@ const BATCH_SIZE = 50;
 const TEXT_MAX_CHARS = 2048;
 
 export class EmbeddingService {
+	private readonly sqliteVecStore: SqliteVecStore;
+
 	constructor(
 		private readonly db: Database.Database,
 		private readonly provider: EmbeddingProvider,
 		private readonly profileId: string = 'local-default'
-	) {}
+	) {
+		this.sqliteVecStore = new SqliteVecStore(db);
+	}
 
 	findSnippetIdsMissingEmbeddings(repositoryId: string, versionId: string | null): string[] {
 		if (versionId) {
@@ -104,13 +109,19 @@ export class EmbeddingService {
 				for (let j = 0; j < batchSnippets.length; j++) {
 					const snippet = batchSnippets[j];
 					const embedding = embeddings[j];
+
 					insert.run(
 						snippet.id,
 						this.profileId,
 						embedding.model,
 						embedding.dimensions,
-						Buffer.from(embedding.values.buffer)
+						Buffer.from(
+							embedding.values.buffer,
+							embedding.values.byteOffset,
+							embedding.values.byteLength
+						)
 					);
+					this.sqliteVecStore.upsertEmbedding(this.profileId, snippet.id, embedding.values);
 				}
 			});
 			insertMany();

src/lib/server/pipeline/embed-worker-entry.ts

@@ -21,6 +21,11 @@ const db = new Database(dbPath);
 db.pragma('journal_mode = WAL');
 db.pragma('foreign_keys = ON');
 db.pragma('busy_timeout = 5000');
+db.pragma('synchronous = NORMAL');
+db.pragma('cache_size = -65536');
+db.pragma('temp_store = MEMORY');
+db.pragma('mmap_size = 268435456');
+db.pragma('wal_autocheckpoint = 1000');
 
 // Load the embedding profile from DB
 const rawProfile = db.prepare('SELECT * FROM embedding_profiles WHERE id = ?').get(embeddingProfileId);

src/lib/server/pipeline/indexing.pipeline.test.ts

@@ -13,6 +13,9 @@ import { JobQueue } from './job-queue.js';
 import { IndexingPipeline } from './indexing.pipeline.js';
 import { recoverStaleJobs } from './startup.js';
 import { EmbeddingService } from '$lib/server/embeddings/embedding.service.js';
+import { loadSqliteVec } from '$lib/server/db/sqlite-vec.js';
+import { SqliteVecStore } from '$lib/server/search/sqlite-vec.store.js';
+import { sqliteVecRowidTableName, sqliteVecTableName } from '$lib/server/db/sqlite-vec.js';
 import * as diffStrategy from './differential-strategy.js';
 
 // ---------------------------------------------------------------------------
@@ -22,6 +25,7 @@ import * as diffStrategy from './differential-strategy.js';
 function createTestDb(): Database.Database {
 	const client = new Database(':memory:');
 	client.pragma('foreign_keys = ON');
+	loadSqliteVec(client);
 
 	const migrationsFolder = join(import.meta.dirname, '../db/migrations');
 	for (const migrationFile of [
@@ -29,7 +33,9 @@ function createTestDb(): Database.Database {
 		'0001_quick_nighthawk.sql',
 		'0002_silky_stellaris.sql',
 		'0003_multiversion_config.sql',
-		'0004_complete_sentry.sql'
+		'0004_complete_sentry.sql',
+		'0005_fix_stage_defaults.sql',
+		'0006_yielding_centennial.sql'
 	]) {
 		const migrationSql = readFileSync(join(migrationsFolder, migrationFile), 'utf-8');
 
@@ -539,6 +545,52 @@ describe('IndexingPipeline', () => {
 		expect(finalChecksum).toBe('sha-v2');
 	});
 
+	it('removes derived vec rows when changed documents are replaced', async () => {
+		const docId = crypto.randomUUID();
+		const snippetId = crypto.randomUUID();
+		const embedding = Float32Array.from([1, 0, 0]);
+		const vecStore = new SqliteVecStore(db);
+
+		db.prepare(
+			`INSERT INTO documents (id, repository_id, version_id, file_path, checksum, indexed_at)
+			 VALUES (?, '/test/repo', NULL, 'README.md', 'stale-doc', ?)`
+		).run(docId, now);
+		db.prepare(
+			`INSERT INTO snippets (id, document_id, repository_id, version_id, type, content, created_at)
+			 VALUES (?, ?, '/test/repo', NULL, 'info', 'stale snippet', ?)`
+		).run(snippetId, docId, now);
+		db.prepare(
+			`INSERT INTO snippet_embeddings (snippet_id, profile_id, model, dimensions, embedding, created_at)
+			 VALUES (?, 'local-default', 'test-model', 3, ?, ?)`
+		).run(snippetId, Buffer.from(embedding.buffer), now);
+		vecStore.upsertEmbedding('local-default', snippetId, embedding);
+
+		const pipeline = makePipeline({
+			files: [
+				{
+					path: 'README.md',
+					content: '# Updated\n\nFresh content.',
+					sha: 'sha-fresh',
+					language: 'markdown'
+				}
+			],
+			totalFiles: 1
+		});
+		const job = makeJob();
+
+		await pipeline.run(job as never);
+
+		const vecTable = sqliteVecTableName('local-default');
+		const rowidTable = sqliteVecRowidTableName('local-default');
+		const vecCount = db.prepare(`SELECT COUNT(*) as n FROM "${vecTable}"`).get() as { n: number };
+		const rowidCount = db.prepare(`SELECT COUNT(*) as n FROM "${rowidTable}"`).get() as {
+			n: number;
+		};
+
+		expect(vecCount.n).toBe(0);
+		expect(rowidCount.n).toBe(0);
+	});
+
 	it('updates job progress as files are processed', async () => {
 		const files = Array.from({ length: 5 }, (_, i) => ({
 			path: `file${i}.md`,
@@ -700,6 +752,60 @@ describe('IndexingPipeline', () => {
 		expect(version.indexed_at).not.toBeNull();
 	});
 
+	it('clones ancestor embeddings into the derived vec store for differential indexing', async () => {
+		const ancestorVersionId = insertVersion(db, { tag: 'v1.0.0', state: 'indexed' });
+		const targetVersionId = insertVersion(db, { tag: 'v1.1.0', state: 'pending' });
+		const vecStore = new SqliteVecStore(db);
+		const docId = crypto.randomUUID();
+		const snippetId = crypto.randomUUID();
+		const embedding = Float32Array.from([0.2, 0.4, 0.6]);
+
+		db.prepare(
+			`INSERT INTO documents (id, repository_id, version_id, file_path, checksum, indexed_at)
+			 VALUES (?, '/test/repo', ?, 'README.md', 'ancestor-doc', ?)`
+		).run(docId, ancestorVersionId, now);
+		db.prepare(
+			`INSERT INTO snippets (id, document_id, repository_id, version_id, type, content, created_at)
+			 VALUES (?, ?, '/test/repo', ?, 'info', 'ancestor snippet', ?)`
+		).run(snippetId, docId, ancestorVersionId, now);
+		db.prepare(
+			`INSERT INTO snippet_embeddings (snippet_id, profile_id, model, dimensions, embedding, created_at)
+			 VALUES (?, 'local-default', 'test-model', 3, ?, ?)`
+		).run(snippetId, Buffer.from(embedding.buffer), now);
+		vecStore.upsertEmbedding('local-default', snippetId, embedding);
+
+		vi.spyOn(diffStrategy, 'buildDifferentialPlan').mockResolvedValue({
+			ancestorTag: 'v1.0.0',
+			ancestorVersionId,
+			changedPaths: new Set<string>(),
+			unchangedPaths: new Set<string>(['README.md'])
+		});
+
+		const pipeline = makePipeline({ files: [], totalFiles: 0 });
+		const job = makeJob('/test/repo', targetVersionId);
+
+		await pipeline.run(job as never);
+
+		const targetRows = db
+			.prepare(
+				`SELECT se.snippet_id, se.embedding
+				 FROM snippet_embeddings se
+				 INNER JOIN snippets s ON s.id = se.snippet_id
+				 WHERE s.version_id = ?`
+			)
+			.all(targetVersionId) as Array<{ snippet_id: string; embedding: Buffer }>;
+
+		expect(targetRows).toHaveLength(1);
+		const matches = vecStore.queryNearestNeighbors(embedding, {
+			repositoryId: '/test/repo',
+			versionId: targetVersionId,
+			profileId: 'local-default',
+			limit: 5
+		});
+
+		expect(matches[0]?.snippetId).toBe(targetRows[0].snippet_id);
+	});
+
 	it('updates repository_versions state to error when pipeline throws and job has versionId', async () => {
 		const versionId = insertVersion(db, { tag: 'v1.0.0', state: 'pending' });
 		const errorCrawl = vi.fn().mockRejectedValue(new Error('crawl failed'));

src/lib/server/pipeline/indexing.pipeline.ts

@@ -22,6 +22,7 @@ import type { EmbeddingService } from '$lib/server/embeddings/embedding.service.
 import { RepositoryMapper } from '$lib/server/mappers/repository.mapper.js';
 import { IndexingJob } from '$lib/server/models/indexing-job.js';
 import { Repository, RepositoryEntity } from '$lib/server/models/repository.js';
+import { SqliteVecStore } from '$lib/server/search/sqlite-vec.store.js';
 import { resolveConfig, type ParsedConfig } from '$lib/server/config/config-parser.js';
 import { parseFile } from '$lib/server/parser/index.js';
 import { computeTrustScore } from '$lib/server/search/trust-score.js';
@@ -63,12 +64,16 @@ function sha256(content: string): string {
 // ---------------------------------------------------------------------------
 
 export class IndexingPipeline {
+	private readonly sqliteVecStore: SqliteVecStore;
+
 	constructor(
 		private readonly db: Database.Database,
 		private readonly githubCrawl: typeof GithubCrawlFn,
 		private readonly localCrawler: LocalCrawler,
 		private readonly embeddingService: EmbeddingService | null
-	) {}
+	) {
+		this.sqliteVecStore = new SqliteVecStore(db);
+	}
 
 	// -------------------------------------------------------------------------
 	// Public — run a job end to end
@@ -593,6 +598,12 @@ export class IndexingPipeline {
 							emb.embedding,
 							emb.created_at
 						);
+					this.sqliteVecStore.upsertEmbeddingBuffer(
+						emb.profile_id,
+						newSnippetId,
+						emb.embedding,
+						emb.dimensions
+					);
 				}
 			}
 		})();
@@ -623,6 +634,8 @@ export class IndexingPipeline {
 		);
 
 		this.db.transaction(() => {
+			this.sqliteVecStore.deleteEmbeddingsForDocumentIds(changedDocIds);
+
 			// Delete stale documents (cascade deletes their snippets via FK).
 			if (changedDocIds.length > 0) {
 				const placeholders = changedDocIds.map(() => '?').join(',');

src/lib/server/pipeline/job-queue.ts

@@ -17,6 +17,54 @@ import type { WorkerPool } from './worker-pool.js';
 
 const JOB_SELECT = `SELECT * FROM indexing_jobs`;
 
+type JobStatusFilter = IndexingJob['status'] | Array<IndexingJob['status']>;
+
+function escapeLikePattern(value: string): string {
+	return value.replaceAll('\\', '\\\\').replaceAll('%', '\\%').replaceAll('_', '\\_');
+}
+
+function isSpecificRepositoryId(repositoryId: string): boolean {
+	return repositoryId.split('/').filter(Boolean).length >= 2;
+}
+
+function normalizeStatuses(status?: JobStatusFilter): Array<IndexingJob['status']> {
+	if (!status) {
+		return [];
+	}
+
+	const statuses = Array.isArray(status) ? status : [status];
+	return [...new Set(statuses)];
+}
+
+function buildJobFilterQuery(options?: {
+	repositoryId?: string;
+	status?: JobStatusFilter;
+}): { where: string; params: unknown[] } {
+	const conditions: string[] = [];
+	const params: unknown[] = [];
+
+	if (options?.repositoryId) {
+		if (isSpecificRepositoryId(options.repositoryId)) {
+			conditions.push('repository_id = ?');
+			params.push(options.repositoryId);
+		} else {
+			conditions.push(`(repository_id = ? OR repository_id LIKE ? ESCAPE '\\')`);
+			params.push(options.repositoryId, `${escapeLikePattern(options.repositoryId)}/%`);
+		}
+	}
+
+	const statuses = normalizeStatuses(options?.status);
+	if (statuses.length > 0) {
+		conditions.push(`status IN (${statuses.map(() => '?').join(', ')})`);
+		params.push(...statuses);
+	}
+
+	return {
+		where: conditions.length > 0 ? `WHERE ${conditions.join(' AND ')}` : '',
+		params
+	};
+}
+
 export class JobQueue {
 	private workerPool: WorkerPool | null = null;
 
@@ -144,23 +192,11 @@ export class JobQueue {
 	 */
 	listJobs(options?: {
 		repositoryId?: string;
-		status?: IndexingJob['status'];
+		status?: JobStatusFilter;
 		limit?: number;
 	}): IndexingJob[] {
 		const limit = Math.min(options?.limit ?? 20, 200);
-		const conditions: string[] = [];
+		const { where, params } = buildJobFilterQuery(options);
-		const params: unknown[] = [];
-
-		if (options?.repositoryId) {
-			conditions.push('repository_id = ?');
-			params.push(options.repositoryId);
-		}
-		if (options?.status) {
-			conditions.push('status = ?');
-			params.push(options.status);
-		}
-
-		const where = conditions.length > 0 ? `WHERE ${conditions.join(' AND ')}` : '';
 		const sql = `${JOB_SELECT} ${where} ORDER BY created_at DESC LIMIT ?`;
 		params.push(limit);
 
@@ -194,19 +230,7 @@ export class JobQueue {
 	 * Count all jobs matching optional filters.
 	 */
 	countJobs(options?: { repositoryId?: string; status?: IndexingJob['status'] }): number {
-		const conditions: string[] = [];
+		const { where, params } = buildJobFilterQuery(options);
-		const params: unknown[] = [];
-
-		if (options?.repositoryId) {
-			conditions.push('repository_id = ?');
-			params.push(options.repositoryId);
-		}
-		if (options?.status) {
-			conditions.push('status = ?');
-			params.push(options.status);
-		}
-
-		const where = conditions.length > 0 ? `WHERE ${conditions.join(' AND')}` : '';
 		const sql = `SELECT COUNT(*) as n FROM indexing_jobs ${where}`;
 		const row = this.db.prepare<unknown[], { n: number }>(sql).get(...params);
 		return row?.n ?? 0;

src/lib/server/pipeline/progress-broadcaster.test.ts

@@ -171,4 +171,25 @@ describe('ProgressBroadcaster', () => {
 		reader1.cancel();
 		reader2.cancel();
 	});
+
+	it('broadcastWorkerStatus sends worker-status events to global subscribers', async () => {
+		const broadcaster = new ProgressBroadcaster();
+		const stream = broadcaster.subscribeAll();
+		const reader = stream.getReader();
+
+		broadcaster.broadcastWorkerStatus({
+			concurrency: 2,
+			active: 1,
+			idle: 1,
+			workers: [{ index: 0, state: 'running', jobId: 'job-1', repositoryId: '/repo/1', versionId: null }]
+		});
+
+		const { value } = await reader.read();
+		const text = value as string;
+
+		expect(text).toContain('event: worker-status');
+		expect(text).toContain('"active":1');
+
+		reader.cancel();
+	});
 });

src/lib/server/pipeline/progress-broadcaster.ts

@@ -10,6 +10,7 @@ export class ProgressBroadcaster {
 	private allSubscribers = new Set<ReadableStreamDefaultController<string>>();
 	private lastEventCache = new Map<string, SSEEvent>();
 	private eventCounters = new Map<string, number>();
+	private globalEventCounter = 0;
 
 	subscribe(jobId: string): ReadableStream<string> {
 		return new ReadableStream({
@@ -135,6 +136,24 @@ export class ProgressBroadcaster {
 		}
 	}
 
+	broadcastWorkerStatus(data: object): void {
+		this.globalEventCounter += 1;
+		const event: SSEEvent = {
+			id: this.globalEventCounter,
+			event: 'worker-status',
+			data: JSON.stringify(data)
+		};
+		const sse = this.formatSSE(event);
+
+		for (const controller of this.allSubscribers) {
+			try {
+				controller.enqueue(sse);
+			} catch {
+				// Controller might be closed or errored
+			}
+		}
+	}
+
 	getLastEvent(jobId: string): SSEEvent | null {
 		return this.lastEventCache.get(jobId) ?? null;
 	}

src/lib/server/pipeline/startup.ts

@@ -16,7 +16,6 @@ import { LocalCrawler } from '$lib/server/crawler/local.crawler.js';
 import { IndexingPipeline } from './indexing.pipeline.js';
 import { JobQueue } from './job-queue.js';
 import { WorkerPool } from './worker-pool.js';
-import type { ParseWorkerResponse } from './worker-types.js';
 import { initBroadcaster } from './progress-broadcaster.js';
 import type { ProgressBroadcaster } from './progress-broadcaster.js';
 import path from 'node:path';
@@ -90,17 +89,28 @@ export function initializePipeline(
 	if (options?.dbPath) {
 		_broadcaster = initBroadcaster();
 
+		const getRepositoryIdForJob = (jobId: string): string => {
+			const row = db
+				.prepare<[string], { repository_id: string }>(
+					`SELECT repository_id FROM indexing_jobs WHERE id = ?`
+				)
+				.get(jobId);
+			return row?.repository_id ?? '';
+		};
+
 		// Resolve worker script paths relative to this file (build/workers/ directory)
 		const __filename = fileURLToPath(import.meta.url);
 		const __dirname = path.dirname(__filename);
 		const workerScript = path.join(__dirname, '../../../build/workers/worker-entry.mjs');
 		const embedWorkerScript = path.join(__dirname, '../../../build/workers/embed-worker-entry.mjs');
+		const writeWorkerScript = path.join(__dirname, '../../../build/workers/write-worker-entry.mjs');
 
 		try {
 			_pool = new WorkerPool({
 				concurrency: options.concurrency ?? 2,
 				workerScript,
 				embedWorkerScript,
+				writeWorkerScript,
 				dbPath: options.dbPath,
 				onProgress: (jobId, msg) => {
 					// Update DB with progress
@@ -112,7 +122,10 @@ export function initializePipeline(
 
 					// Broadcast progress event
 					if (_broadcaster) {
-						_broadcaster.broadcast(jobId, '', 'progress', msg);
+						_broadcaster.broadcast(jobId, getRepositoryIdForJob(jobId), 'job-progress', {
+							...msg,
+							status: 'running'
+						});
 					}
 				},
 				onJobDone: (jobId: string) => {
@@ -123,7 +136,10 @@ export function initializePipeline(
 
 					// Broadcast done event
 					if (_broadcaster) {
-						_broadcaster.broadcast(jobId, '', 'job-done', { jobId });
+						_broadcaster.broadcast(jobId, getRepositoryIdForJob(jobId), 'job-done', {
+							jobId,
+							status: 'done'
+						});
 					}
 				},
 				onJobFailed: (jobId: string, error: string) => {
@@ -134,7 +150,11 @@ export function initializePipeline(
 
 					// Broadcast failed event
 					if (_broadcaster) {
-						_broadcaster.broadcast(jobId, '', 'job-failed', { jobId, error });
+						_broadcaster.broadcast(jobId, getRepositoryIdForJob(jobId), 'job-failed', {
+							jobId,
+							status: 'failed',
+							error
+						});
 					}
 				},
 				onEmbedDone: (jobId: string) => {
@@ -142,6 +162,9 @@ export function initializePipeline(
 				},
 				onEmbedFailed: (jobId: string, error: string) => {
 					console.error('[WorkerPool] Embedding failed for job:', jobId, error);
+				},
+				onWorkerStatus: (status) => {
+					_broadcaster?.broadcastWorkerStatus(status);
 				}
 			});
 

src/lib/server/pipeline/worker-entry.ts

@@ -13,6 +13,11 @@ const db = new Database(dbPath);
 db.pragma('journal_mode = WAL');
 db.pragma('foreign_keys = ON');
 db.pragma('busy_timeout = 5000');
+db.pragma('synchronous = NORMAL');
+db.pragma('cache_size = -65536');
+db.pragma('temp_store = MEMORY');
+db.pragma('mmap_size = 268435456');
+db.pragma('wal_autocheckpoint = 1000');
 
 const pipeline = new IndexingPipeline(db, githubCrawl, new LocalCrawler(), null);
 let currentJobId: string | null = null;

src/lib/server/pipeline/worker-pool.ts

@@ -1,11 +1,19 @@
 import { Worker } from 'node:worker_threads';
 import { existsSync } from 'node:fs';
-import type { ParseWorkerRequest, ParseWorkerResponse, EmbedWorkerRequest, EmbedWorkerResponse, WorkerInitData } from './worker-types.js';
+import type {
+	ParseWorkerRequest,
+	ParseWorkerResponse,
+	EmbedWorkerRequest,
+	EmbedWorkerResponse,
+	WorkerInitData,
+	WriteWorkerResponse
+} from './worker-types.js';
 
 export interface WorkerPoolOptions {
 	concurrency: number;
 	workerScript: string;
 	embedWorkerScript: string;
+	writeWorkerScript?: string;
 	dbPath: string;
 	embeddingProfileId?: string;
 	onProgress: (jobId: string, msg: Extract<ParseWorkerResponse, { type: 'progress' }>) => void;
@@ -13,6 +21,22 @@ export interface WorkerPoolOptions {
 	onJobFailed: (jobId: string, error: string) => void;
 	onEmbedDone: (jobId: string) => void;
 	onEmbedFailed: (jobId: string, error: string) => void;
+	onWorkerStatus?: (status: WorkerPoolStatus) => void;
+}
+
+export interface WorkerStatusEntry {
+	index: number;
+	state: 'idle' | 'running';
+	jobId: string | null;
+	repositoryId: string | null;
+	versionId: string | null;
+}
+
+export interface WorkerPoolStatus {
+	concurrency: number;
+	active: number;
+	idle: number;
+	workers: WorkerStatusEntry[];
 }
 
 interface QueuedJob {
@@ -24,6 +48,7 @@ interface QueuedJob {
 interface RunningJob {
 	jobId: string;
 	repositoryId: string;
+	versionId?: string | null;
 }
 
 interface EmbedQueuedJob {
@@ -36,10 +61,12 @@ export class WorkerPool {
 	private workers: Worker[] = [];
 	private idleWorkers: Worker[] = [];
 	private embedWorker: Worker | null = null;
+	private writeWorker: Worker | null = null;
 	private embedReady = false;
+	private writeReady = false;
 	private jobQueue: QueuedJob[] = [];
 	private runningJobs = new Map<Worker, RunningJob>();
-	private runningRepoIds = new Set<string>();
+	private runningJobKeys = new Set<string>();
 	private embedQueue: EmbedQueuedJob[] = [];
 	private options: WorkerPoolOptions;
 	private fallbackMode = false;
@@ -66,6 +93,12 @@ export class WorkerPool {
 		if (options.embeddingProfileId && existsSync(options.embedWorkerScript)) {
 			this.embedWorker = this.spawnEmbedWorker();
 		}
+
+		if (options.writeWorkerScript && existsSync(options.writeWorkerScript)) {
+			this.writeWorker = this.spawnWriteWorker(options.writeWorkerScript);
+		}
+
+		this.emitStatusChanged();
 	}
 
 	private spawnParseWorker(): Worker {
@@ -94,6 +127,22 @@ export class WorkerPool {
 		return worker;
 	}
 
+	private spawnWriteWorker(writeWorkerScript: string): Worker {
+		const worker = new Worker(writeWorkerScript, {
+			workerData: {
+				dbPath: this.options.dbPath
+			} satisfies WorkerInitData
+		});
+
+		worker.on('message', (msg: WriteWorkerResponse) => this.onWriteWorkerMessage(msg));
+		worker.on('exit', () => {
+			this.writeReady = false;
+			this.writeWorker = null;
+		});
+
+		return worker;
+	}
+
 	public enqueue(jobId: string, repositoryId: string, versionId?: string | null): void {
 		if (this.shuttingDown) {
 			console.warn('WorkerPool is shutting down, ignoring enqueue request');
@@ -109,10 +158,18 @@ export class WorkerPool {
 		this.dispatch();
 	}
 
+	private static jobKey(repositoryId: string, versionId?: string | null): string {
+		return `${repositoryId}:${versionId ?? ''}`;
+	}
+
 	private dispatch(): void {
+		let statusChanged = false;
+
 		while (this.idleWorkers.length > 0 && this.jobQueue.length > 0) {
-			// Find first job whose repositoryId is not currently running
+			// Find first job whose (repositoryId, versionId) compound key is not currently running
-			const jobIdx = this.jobQueue.findIndex((j) => !this.runningRepoIds.has(j.repositoryId));
+			const jobIdx = this.jobQueue.findIndex(
+				(j) => !this.runningJobKeys.has(WorkerPool.jobKey(j.repositoryId, j.versionId))
+			);
 
 			if (jobIdx === -1) {
 				// No eligible job found (all repos have running jobs)
@@ -122,12 +179,17 @@ export class WorkerPool {
 			const job = this.jobQueue.splice(jobIdx, 1)[0];
 			const worker = this.idleWorkers.pop()!;
 
-			this.runningJobs.set(worker, { jobId: job.jobId, repositoryId: job.repositoryId });
+			this.runningJobs.set(worker, { jobId: job.jobId, repositoryId: job.repositoryId, versionId: job.versionId });
-			this.runningRepoIds.add(job.repositoryId);
+			this.runningJobKeys.add(WorkerPool.jobKey(job.repositoryId, job.versionId));
+			statusChanged = true;
 
 			const msg: ParseWorkerRequest = { type: 'run', jobId: job.jobId };
 			worker.postMessage(msg);
 		}
+
+		if (statusChanged) {
+			this.emitStatusChanged();
+		}
 	}
 
 	private onWorkerMessage(worker: Worker, msg: ParseWorkerResponse): void {
@@ -137,15 +199,20 @@ export class WorkerPool {
 			const runningJob = this.runningJobs.get(worker);
 			if (runningJob) {
 				this.runningJobs.delete(worker);
-				this.runningRepoIds.delete(runningJob.repositoryId);
+				this.runningJobKeys.delete(WorkerPool.jobKey(runningJob.repositoryId, runningJob.versionId));
 			}
 			this.idleWorkers.push(worker);
 			this.options.onJobDone(msg.jobId);
+			this.emitStatusChanged();
 
 			// If embedding configured, enqueue embed request
 			if (this.embedWorker && this.options.embeddingProfileId) {
-				const runningJobData = runningJob || { jobId: msg.jobId, repositoryId: '' };
+				const runningJobData = runningJob || { jobId: msg.jobId, repositoryId: '', versionId: null };
-				this.enqueueEmbed(msg.jobId, runningJobData.repositoryId, null);
+				this.enqueueEmbed(
+					msg.jobId,
+					runningJobData.repositoryId,
+					runningJobData.versionId ?? null
+				);
 			}
 
 			this.dispatch();
@@ -153,10 +220,11 @@ export class WorkerPool {
 			const runningJob = this.runningJobs.get(worker);
 			if (runningJob) {
 				this.runningJobs.delete(worker);
-				this.runningRepoIds.delete(runningJob.repositoryId);
+				this.runningJobKeys.delete(WorkerPool.jobKey(runningJob.repositoryId, runningJob.versionId));
 			}
 			this.idleWorkers.push(worker);
 			this.options.onJobFailed(msg.jobId, msg.error);
+			this.emitStatusChanged();
 			this.dispatch();
 		}
 	}
@@ -176,13 +244,15 @@ export class WorkerPool {
 		const runningJob = this.runningJobs.get(worker);
 		if (runningJob && code !== 0) {
 			this.runningJobs.delete(worker);
-			this.runningRepoIds.delete(runningJob.repositoryId);
+			this.runningJobKeys.delete(WorkerPool.jobKey(runningJob.repositoryId, runningJob.versionId));
 			this.options.onJobFailed(runningJob.jobId, `Worker crashed with code ${code}`);
 		} else if (runningJob) {
 			this.runningJobs.delete(worker);
-			this.runningRepoIds.delete(runningJob.repositoryId);
+			this.runningJobKeys.delete(WorkerPool.jobKey(runningJob.repositoryId, runningJob.versionId));
 		}
 
+		this.emitStatusChanged();
+
 		// Remove from workers array
 		const workerIdx = this.workers.indexOf(worker);
 		if (workerIdx !== -1) {
@@ -212,6 +282,17 @@ export class WorkerPool {
 		}
 	}
 
+	private onWriteWorkerMessage(msg: WriteWorkerResponse): void {
+		if (msg.type === 'ready') {
+			this.writeReady = true;
+			return;
+		}
+
+		if (msg.type === 'write_error') {
+			console.error('[WorkerPool] Write worker failed for job:', msg.jobId, msg.error);
+		}
+	}
+
 	private processEmbedQueue(): void {
 		if (!this.embedWorker || !this.embedReady) {
 			return;
@@ -250,6 +331,7 @@ export class WorkerPool {
 	}
 
 	public setMaxConcurrency(n: number): void {
+		this.options.concurrency = n;
 		const current = this.workers.length;
 
 		if (n > current) {
@@ -274,6 +356,8 @@ export class WorkerPool {
 				}
 			}
 		}
+
+		this.emitStatusChanged();
 	}
 
 	public async shutdown(): Promise<void> {
@@ -300,6 +384,14 @@ export class WorkerPool {
 			}
 		}
 
+		if (this.writeWorker) {
+			try {
+				this.writeWorker.postMessage({ type: 'shutdown' });
+			} catch {
+				// Worker might already be exited
+			}
+		}
+
 		// Wait for workers to exit with timeout
 		const timeout = 5000;
 		const startTime = Date.now();
@@ -329,9 +421,41 @@ export class WorkerPool {
 			}
 		}
 
+		if (this.writeWorker) {
+			try {
+				this.writeWorker.terminate();
+			} catch {
+				// Already terminated
+			}
+		}
+
 		this.workers = [];
 		this.idleWorkers = [];
 		this.embedWorker = null;
+		this.writeWorker = null;
+		this.emitStatusChanged();
+	}
+
+	public getStatus(): WorkerPoolStatus {
+		return {
+			concurrency: this.options.concurrency,
+			active: this.runningJobs.size,
+			idle: this.idleWorkers.length,
+			workers: this.workers.map((worker, index) => {
+				const runningJob = this.runningJobs.get(worker);
+				return {
+					index,
+					state: runningJob ? 'running' : 'idle',
+					jobId: runningJob?.jobId ?? null,
+					repositoryId: runningJob?.repositoryId ?? null,
+					versionId: runningJob?.versionId ?? null
+				};
+			})
+		};
+	}
+
+	private emitStatusChanged(): void {
+		this.options.onWorkerStatus?.(this.getStatus());
 	}
 
 	public get isFallbackMode(): boolean {

src/lib/server/pipeline/worker-types.ts

@@ -19,7 +19,61 @@ export type EmbedWorkerResponse =
 	| { type: 'embed-done'; jobId: string }
 	| { type: 'embed-failed'; jobId: string; error: string };
 
+export type WriteWorkerRequest = WriteRequest | { type: 'shutdown' };
+
+export type WriteWorkerResponse =
+	| { type: 'ready' }
+	| WriteAck
+	| WriteError;
+
 export interface WorkerInitData {
 	dbPath: string;
 	embeddingProfileId?: string;
 }
+
+// Write worker message types (Phase 6)
+export interface SerializedDocument {
+	id: string;
+	repositoryId: string;
+	versionId: string | null;
+	filePath: string;
+	title: string | null;
+	language: string | null;
+	tokenCount: number;
+	checksum: string;
+	indexedAt: number;
+}
+
+export interface SerializedSnippet {
+	id: string;
+	documentId: string;
+	repositoryId: string;
+	versionId: string | null;
+	type: 'code' | 'info';
+	title: string | null;
+	content: string;
+	language: string | null;
+	breadcrumb: string | null;
+	tokenCount: number;
+	createdAt: number;
+}
+
+export type WriteRequest = {
+	type: 'write';
+	jobId: string;
+	documents: SerializedDocument[];
+	snippets: SerializedSnippet[];
+};
+
+export type WriteAck = {
+	type: 'write_ack';
+	jobId: string;
+	documentCount: number;
+	snippetCount: number;
+};
+
+export type WriteError = {
+	type: 'write_error';
+	jobId: string;
+	error: string;
+};

src/lib/server/pipeline/write-worker-entry.ts

@@ -0,0 +1,93 @@
+import { workerData, parentPort } from 'node:worker_threads';
+import Database from 'better-sqlite3';
+import type {
+	SerializedDocument,
+	SerializedSnippet,
+	WorkerInitData,
+	WriteWorkerRequest,
+	WriteWorkerResponse
+} from './worker-types.js';
+
+const { dbPath } = workerData as WorkerInitData;
+const db = new Database(dbPath);
+db.pragma('journal_mode = WAL');
+db.pragma('foreign_keys = ON');
+db.pragma('busy_timeout = 5000');
+db.pragma('synchronous = NORMAL');
+db.pragma('cache_size = -65536');
+db.pragma('temp_store = MEMORY');
+db.pragma('mmap_size = 268435456');
+db.pragma('wal_autocheckpoint = 1000');
+
+const insertDocument = db.prepare(
+	`INSERT OR REPLACE INTO documents
+		(id, repository_id, version_id, file_path, title, language, token_count, checksum, indexed_at)
+	 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`
+);
+
+const insertSnippet = db.prepare(
+	`INSERT OR REPLACE INTO snippets
+		(id, document_id, repository_id, version_id, type, title, content, language, breadcrumb, token_count, created_at)
+	 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
+);
+
+const writeBatch = db.transaction((documents: SerializedDocument[], snippets: SerializedSnippet[]) => {
+	for (const document of documents) {
+		insertDocument.run(
+			document.id,
+			document.repositoryId,
+			document.versionId,
+			document.filePath,
+			document.title,
+			document.language,
+			document.tokenCount,
+			document.checksum,
+			document.indexedAt
+		);
+	}
+
+	for (const snippet of snippets) {
+		insertSnippet.run(
+			snippet.id,
+			snippet.documentId,
+			snippet.repositoryId,
+			snippet.versionId,
+			snippet.type,
+			snippet.title,
+			snippet.content,
+			snippet.language,
+			snippet.breadcrumb,
+			snippet.tokenCount,
+			snippet.createdAt
+		);
+	}
+});
+
+parentPort?.postMessage({ type: 'ready' } satisfies WriteWorkerResponse);
+
+parentPort?.on('message', (msg: WriteWorkerRequest) => {
+	if (msg.type === 'shutdown') {
+		db.close();
+		process.exit(0);
+	}
+
+	if (msg.type !== 'write') {
+		return;
+	}
+
+	try {
+		writeBatch(msg.documents, msg.snippets);
+		parentPort?.postMessage({
+			type: 'write_ack',
+			jobId: msg.jobId,
+			documentCount: msg.documents.length,
+			snippetCount: msg.snippets.length
+		} satisfies WriteWorkerResponse);
+	} catch (error) {
+		parentPort?.postMessage({
+			type: 'write_error',
+			jobId: msg.jobId,
+			error: error instanceof Error ? error.message : String(error)
+		} satisfies WriteWorkerResponse);
+	}
+});

src/lib/server/search/hybrid.search.service.test.ts

@@ -15,6 +15,8 @@ import { HybridSearchService } from './hybrid.search.service.js';
 import { VectorSearch, cosineSimilarity } from './vector.search.js';
 import { reciprocalRankFusion } from './rrf.js';
 import type { EmbeddingProvider, EmbeddingVector } from '../embeddings/provider.js';
+import { loadSqliteVec } from '../db/sqlite-vec.js';
+import { SqliteVecStore } from './sqlite-vec.store.js';
 
 // ---------------------------------------------------------------------------
 // In-memory DB factory
@@ -23,6 +25,7 @@ import type { EmbeddingProvider, EmbeddingVector } from '../embeddings/provider.
 function createTestDb(): Database.Database {
 	const client = new Database(':memory:');
 	client.pragma('foreign_keys = ON');
+	loadSqliteVec(client);
 
 	const migrationsFolder = join(import.meta.dirname, '../db/migrations');
 
@@ -30,7 +33,11 @@ function createTestDb(): Database.Database {
 	const migrations = [
 		'0000_large_master_chief.sql',
 		'0001_quick_nighthawk.sql',
-		'0002_silky_stellaris.sql'
+		'0002_silky_stellaris.sql',
+		'0003_multiversion_config.sql',
+		'0004_complete_sentry.sql',
+		'0005_fix_stage_defaults.sql',
+		'0006_yielding_centennial.sql'
 	];
 	for (const migrationFile of migrations) {
 		const migrationSql = readFileSync(join(migrationsFolder, migrationFile), 'utf-8');
@@ -121,6 +128,7 @@ function seedEmbedding(
        VALUES (?, ?, ?, ?, ?, ?)`
 		)
 		.run(snippetId, profileId, model, values.length, Buffer.from(f32.buffer), NOW_S);
+	new SqliteVecStore(client).upsertEmbedding(profileId, snippetId, f32);
 }
 
 // ---------------------------------------------------------------------------
@@ -368,6 +376,42 @@ describe('VectorSearch', () => {
 		const results = vs.vectorSearch(new Float32Array([-0.5, 0.5]), { repositoryId: repoId });
 		expect(results[0].score).toBeCloseTo(1.0, 4);
 	});
+
+	it('filters by profileId using per-profile vec tables', () => {
+		client
+			.prepare(
+				`INSERT INTO embedding_profiles (id, provider_kind, title, enabled, is_default, model, dimensions, config, created_at, updated_at)
+				 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
+			)
+			.run('secondary-profile', 'local-transformers', 'Secondary', 1, 0, 'test-model', 2, '{}', NOW_S, NOW_S);
+
+		const defaultSnippet = seedSnippet(client, {
+			repositoryId: repoId,
+			documentId: docId,
+			content: 'default profile snippet'
+		});
+		const secondarySnippet = seedSnippet(client, {
+			repositoryId: repoId,
+			documentId: docId,
+			content: 'secondary profile snippet'
+		});
+
+		seedEmbedding(client, defaultSnippet, [1, 0], 'local-default');
+		seedEmbedding(client, secondarySnippet, [1, 0], 'secondary-profile');
+
+		const vs = new VectorSearch(client);
+		const defaultResults = vs.vectorSearch(new Float32Array([1, 0]), {
+			repositoryId: repoId,
+			profileId: 'local-default'
+		});
+		const secondaryResults = vs.vectorSearch(new Float32Array([1, 0]), {
+			repositoryId: repoId,
+			profileId: 'secondary-profile'
+		});
+
+		expect(defaultResults.map((result) => result.snippetId)).toEqual([defaultSnippet]);
+		expect(secondaryResults.map((result) => result.snippetId)).toEqual([secondarySnippet]);
+	});
 });
 
 // ===========================================================================

src/lib/server/search/hybrid.search.service.ts

@@ -148,7 +148,12 @@ export class HybridSearchService {
 
 			const topIds = vectorResults.slice(0, limit).map((r) => r.snippetId);
 			return {
-				results: this.fetchSnippetsByIds(topIds, options.repositoryId, options.type),
+				results: this.fetchSnippetsByIds(
+					topIds,
+					options.repositoryId,
+					options.versionId,
+					options.type
+				),
 				searchModeUsed: 'semantic'
 			};
 		}
@@ -194,7 +199,12 @@ export class HybridSearchService {
 
 			const topIds = vectorResults.slice(0, limit).map((r) => r.snippetId);
 			return {
-				results: this.fetchSnippetsByIds(topIds, options.repositoryId, options.type),
+				results: this.fetchSnippetsByIds(
+					topIds,
+					options.repositoryId,
+					options.versionId,
+					options.type
+				),
 				searchModeUsed: 'keyword_fallback'
 			};
 		}
@@ -220,7 +230,12 @@ export class HybridSearchService {
 		if (alpha === 1) {
 			const topIds = vectorResults.slice(0, limit).map((r) => r.snippetId);
 			return {
-				results: this.fetchSnippetsByIds(topIds, options.repositoryId, options.type),
+				results: this.fetchSnippetsByIds(
+					topIds,
+					options.repositoryId,
+					options.versionId,
+					options.type
+				),
 				searchModeUsed: 'semantic'
 			};
 		}
@@ -234,7 +249,12 @@ export class HybridSearchService {
 
 		const topIds = fused.slice(0, limit).map((r) => r.id);
 		return {
-			results: this.fetchSnippetsByIds(topIds, options.repositoryId, options.type),
+			results: this.fetchSnippetsByIds(
+				topIds,
+				options.repositoryId,
+				options.versionId,
+				options.type
+			),
 			searchModeUsed: 'hybrid'
 		};
 	}
@@ -253,13 +273,19 @@ export class HybridSearchService {
 	private fetchSnippetsByIds(
 		ids: string[],
 		repositoryId: string,
+		versionId?: string,
 		type?: 'code' | 'info'
 	): SnippetSearchResult[] {
 		if (ids.length === 0) return [];
 
 		const placeholders = ids.map(() => '?').join(', ');
 		const params: unknown[] = [...ids, repositoryId];
+		let versionClause = '';
 		let typeClause = '';
+		if (versionId !== undefined) {
+			versionClause = ' AND s.version_id = ?';
+			params.push(versionId);
+		}
 		if (type !== undefined) {
 			typeClause = ' AND s.type = ?';
 			params.push(type);
@@ -276,7 +302,7 @@ export class HybridSearchService {
 				FROM snippets s
 				JOIN repositories r ON r.id = s.repository_id
 				WHERE s.id IN (${placeholders})
-				  AND s.repository_id = ?${typeClause}`
+				  AND s.repository_id = ?${versionClause}${typeClause}`
 			)
 			.all(...params) as RawSnippetById[];
 

src/lib/server/search/sqlite-vec.store.ts

@@ -0,0 +1,394 @@
+import type Database from 'better-sqlite3';
+import {
+	loadSqliteVec,
+	quoteSqliteIdentifier,
+	sqliteVecRowidTableName,
+	sqliteVecTableName
+} from '$lib/server/db/sqlite-vec.js';
+
+export interface SqliteVecQueryOptions {
+	repositoryId: string;
+	versionId?: string;
+	profileId?: string;
+	limit?: number;
+}
+
+export interface SqliteVecQueryResult {
+	snippetId: string;
+	score: number;
+	distance: number;
+}
+
+interface ProfileDimensionsRow {
+	dimensions: number;
+}
+
+interface StoredDimensionsRow {
+	count: number;
+	min_dimensions: number | null;
+	max_dimensions: number | null;
+}
+
+interface SnippetRowidRow {
+	rowid: number;
+}
+
+interface RawKnnRow {
+	snippet_id: string;
+	distance: number;
+}
+
+interface CanonicalEmbeddingRow {
+	snippet_id: string;
+	embedding: Buffer;
+}
+
+interface StoredEmbeddingRef {
+	profile_id: string;
+	snippet_id: string;
+}
+
+interface ProfileStoreTables {
+	vectorTableName: string;
+	rowidTableName: string;
+	quotedVectorTableName: string;
+	quotedRowidTableName: string;
+	dimensions: number;
+}
+
+function toEmbeddingBuffer(values: Float32Array): Buffer {
+	return Buffer.from(values.buffer, values.byteOffset, values.byteLength);
+}
+
+function distanceToScore(distance: number): number {
+	return 1 / (1 + distance);
+}
+
+export class SqliteVecStore {
+	constructor(private readonly db: Database.Database) {}
+
+	ensureProfileStore(profileId: string, preferredDimensions?: number): number {
+		const tables = this.getProfileStoreTables(profileId, preferredDimensions);
+
+		this.db.exec(`
+			CREATE TABLE IF NOT EXISTS ${tables.quotedRowidTableName} (
+				rowid INTEGER PRIMARY KEY,
+				snippet_id TEXT NOT NULL UNIQUE REFERENCES snippets(id) ON DELETE CASCADE
+			);
+		`);
+		this.db.exec(`
+			CREATE VIRTUAL TABLE IF NOT EXISTS ${tables.quotedVectorTableName}
+			USING vec0(embedding float[${tables.dimensions}]);
+		`);
+
+		return tables.dimensions;
+	}
+
+	upsertEmbedding(profileId: string, snippetId: string, embedding: Float32Array): void {
+		const tables = this.getProfileStoreTables(profileId, embedding.length);
+
+		this.ensureProfileStore(profileId, tables.dimensions);
+
+		const existingRow = this.db
+			.prepare<[string], SnippetRowidRow>(
+				`SELECT rowid FROM ${tables.quotedRowidTableName} WHERE snippet_id = ?`
+			)
+			.get(snippetId);
+
+		const embeddingBuffer = toEmbeddingBuffer(embedding);
+		if (existingRow) {
+			this.db
+				.prepare<[Buffer, number]>(
+					`UPDATE ${tables.quotedVectorTableName} SET embedding = ? WHERE rowid = ?`
+				)
+				.run(embeddingBuffer, existingRow.rowid);
+			return;
+		}
+
+		const insertResult = this.db
+			.prepare<[Buffer]>(`INSERT INTO ${tables.quotedVectorTableName} (embedding) VALUES (?)`)
+			.run(embeddingBuffer);
+		this.db
+			.prepare<[number, string]>(
+				`INSERT INTO ${tables.quotedRowidTableName} (rowid, snippet_id) VALUES (?, ?)`
+			)
+			.run(Number(insertResult.lastInsertRowid), snippetId);
+	}
+
+	upsertEmbeddingBuffer(
+		profileId: string,
+		snippetId: string,
+		embedding: Buffer,
+		dimensions?: number
+	): void {
+		const vector = new Float32Array(
+			embedding.buffer,
+			embedding.byteOffset,
+			dimensions ?? Math.floor(embedding.byteLength / Float32Array.BYTES_PER_ELEMENT)
+		);
+		this.upsertEmbedding(profileId, snippetId, vector);
+	}
+
+	deleteEmbedding(profileId: string, snippetId: string): void {
+		const tables = this.getProfileStoreTables(profileId);
+		this.ensureProfileStore(profileId);
+
+		const existingRow = this.db
+			.prepare<[string], SnippetRowidRow>(
+				`SELECT rowid FROM ${tables.quotedRowidTableName} WHERE snippet_id = ?`
+			)
+			.get(snippetId);
+
+		if (!existingRow) {
+			return;
+		}
+
+		this.db
+			.prepare<[number]>(`DELETE FROM ${tables.quotedVectorTableName} WHERE rowid = ?`)
+			.run(existingRow.rowid);
+		this.db
+			.prepare<[string]>(`DELETE FROM ${tables.quotedRowidTableName} WHERE snippet_id = ?`)
+			.run(snippetId);
+	}
+
+	deleteEmbeddingsForDocumentIds(documentIds: string[]): void {
+		if (documentIds.length === 0) {
+			return;
+		}
+
+		const placeholders = documentIds.map(() => '?').join(', ');
+		const rows = this.db
+			.prepare<unknown[], StoredEmbeddingRef>(
+				`SELECT DISTINCT se.profile_id, se.snippet_id
+				 FROM snippet_embeddings se
+				 INNER JOIN snippets s ON s.id = se.snippet_id
+				 WHERE s.document_id IN (${placeholders})`
+			)
+			.all(...documentIds);
+
+		this.deleteEmbeddingRefs(rows);
+	}
+
+	deleteEmbeddingsForRepository(repositoryId: string): void {
+		const rows = this.db
+			.prepare<[string], StoredEmbeddingRef>(
+				`SELECT DISTINCT se.profile_id, se.snippet_id
+				 FROM snippet_embeddings se
+				 INNER JOIN snippets s ON s.id = se.snippet_id
+				 WHERE s.repository_id = ?`
+			)
+			.all(repositoryId);
+
+		this.deleteEmbeddingRefs(rows);
+	}
+
+	deleteEmbeddingsForVersion(repositoryId: string, versionId: string): void {
+		const rows = this.db
+			.prepare<[string, string], StoredEmbeddingRef>(
+				`SELECT DISTINCT se.profile_id, se.snippet_id
+				 FROM snippet_embeddings se
+				 INNER JOIN snippets s ON s.id = se.snippet_id
+				 WHERE s.repository_id = ? AND s.version_id = ?`
+			)
+			.all(repositoryId, versionId);
+
+		this.deleteEmbeddingRefs(rows);
+	}
+
+	queryNearestNeighbors(
+		queryEmbedding: Float32Array,
+		options: SqliteVecQueryOptions
+	): SqliteVecQueryResult[] {
+		const { repositoryId, versionId, profileId = 'local-default', limit = 50 } = options;
+		if (limit <= 0) {
+			return [];
+		}
+
+		const tables = this.getProfileStoreTables(profileId, queryEmbedding.length);
+
+		this.ensureProfileStore(profileId, tables.dimensions);
+		const totalRows = this.synchronizeProfileStore(profileId, tables);
+		if (totalRows === 0) {
+			return [];
+		}
+
+		let sql = `
+			SELECT rowids.snippet_id, vec.distance
+			FROM ${tables.quotedVectorTableName} vec
+			JOIN ${tables.quotedRowidTableName} rowids ON rowids.rowid = vec.rowid
+			JOIN snippets s ON s.id = rowids.snippet_id
+			WHERE vec.embedding MATCH ?
+			  AND vec.k = ?
+			  AND s.repository_id = ?
+		`;
+		const params: unknown[] = [toEmbeddingBuffer(queryEmbedding), totalRows, repositoryId];
+
+		if (versionId !== undefined) {
+			sql += ' AND s.version_id = ?';
+			params.push(versionId);
+		}
+
+		sql += ' ORDER BY vec.distance ASC LIMIT ?';
+		params.push(limit);
+
+		const rows = this.db.prepare<unknown[], RawKnnRow>(sql).all(...params);
+		return rows.map((row) => ({
+			snippetId: row.snippet_id,
+			score: distanceToScore(row.distance),
+			distance: row.distance
+		}));
+	}
+
+	private synchronizeProfileStore(profileId: string, tables: ProfileStoreTables): number {
+		this.db
+			.prepare<[string, number]>(
+				`DELETE FROM ${tables.quotedRowidTableName}
+				 WHERE rowid IN (
+					SELECT rowids.rowid
+					FROM ${tables.quotedRowidTableName} rowids
+					LEFT JOIN snippet_embeddings se
+					  ON se.snippet_id = rowids.snippet_id
+					 AND se.profile_id = ?
+					 AND se.dimensions = ?
+					LEFT JOIN ${tables.quotedVectorTableName} vec ON vec.rowid = rowids.rowid
+					WHERE se.snippet_id IS NULL OR vec.rowid IS NULL
+				 )`
+			)
+			.run(profileId, tables.dimensions);
+
+		this.db
+			.prepare(
+				`DELETE FROM ${tables.quotedVectorTableName}
+				 WHERE rowid NOT IN (SELECT rowid FROM ${tables.quotedRowidTableName})`
+			)
+			.run();
+
+		const missingRows = this.db
+			.prepare<[string, number], CanonicalEmbeddingRow>(
+				`SELECT se.snippet_id, se.embedding
+				 FROM snippet_embeddings se
+				 LEFT JOIN ${tables.quotedRowidTableName} rowids ON rowids.snippet_id = se.snippet_id
+				 WHERE se.profile_id = ?
+				   AND se.dimensions = ?
+				   AND rowids.snippet_id IS NULL`
+			)
+			.all(profileId, tables.dimensions);
+
+		if (missingRows.length > 0) {
+			const backfill = this.db.transaction((rows: CanonicalEmbeddingRow[]) => {
+				for (const row of rows) {
+					this.upsertEmbedding(
+						profileId,
+						row.snippet_id,
+						new Float32Array(
+							row.embedding.buffer,
+							row.embedding.byteOffset,
+							tables.dimensions
+						)
+					);
+				}
+			});
+			backfill(missingRows);
+		}
+
+		return (
+			this.db
+				.prepare<[], { count: number }>(
+					`SELECT COUNT(*) AS count
+					 FROM ${tables.quotedVectorTableName} vec
+					 JOIN ${tables.quotedRowidTableName} rowids ON rowids.rowid = vec.rowid`
+				)
+				.get()?.count ?? 0
+		);
+	}
+
+	private deleteEmbeddingRefs(rows: StoredEmbeddingRef[]): void {
+		if (rows.length === 0) {
+			return;
+		}
+
+		const removeRows = this.db.transaction((refs: StoredEmbeddingRef[]) => {
+			for (const ref of refs) {
+				this.deleteEmbedding(ref.profile_id, ref.snippet_id);
+			}
+		});
+
+		removeRows(rows);
+	}
+
+	private getProfileStoreTables(
+		profileId: string,
+		preferredDimensions?: number
+	): ProfileStoreTables {
+		loadSqliteVec(this.db);
+
+		const dimensionsRow = this.db
+			.prepare<[string], ProfileDimensionsRow>(
+				'SELECT dimensions FROM embedding_profiles WHERE id = ?'
+			)
+			.get(profileId);
+		if (!dimensionsRow) {
+			throw new Error(`Embedding profile not found: ${profileId}`);
+		}
+
+		const storedDimensions = this.db
+			.prepare<[string], StoredDimensionsRow>(
+				`SELECT
+					COUNT(*) AS count,
+					MIN(dimensions) AS min_dimensions,
+					MAX(dimensions) AS max_dimensions
+				 FROM snippet_embeddings
+				 WHERE profile_id = ?`
+			)
+			.get(profileId);
+
+		const effectiveDimensions = this.resolveDimensions(
+			profileId,
+			dimensionsRow.dimensions,
+			storedDimensions,
+			preferredDimensions
+		);
+
+		const vectorTableName = sqliteVecTableName(profileId);
+		const rowidTableName = sqliteVecRowidTableName(profileId);
+
+		return {
+			vectorTableName,
+			rowidTableName,
+			quotedVectorTableName: quoteSqliteIdentifier(vectorTableName),
+			quotedRowidTableName: quoteSqliteIdentifier(rowidTableName),
+			dimensions: effectiveDimensions
+		};
+	}
+
+	private resolveDimensions(
+		profileId: string,
+		profileDimensions: number,
+		storedDimensions: StoredDimensionsRow | undefined,
+		preferredDimensions?: number
+	): number {
+		if (storedDimensions && storedDimensions.count > 0) {
+			if (storedDimensions.min_dimensions !== storedDimensions.max_dimensions) {
+				throw new Error(`Stored embedding dimensions are inconsistent for profile ${profileId}`);
+			}
+
+			const canonicalDimensions = storedDimensions.min_dimensions;
+			if (canonicalDimensions === null) {
+				throw new Error(`Stored embedding dimensions are missing for profile ${profileId}`);
+			}
+
+			if (
+				preferredDimensions !== undefined &&
+				preferredDimensions !== canonicalDimensions
+			) {
+				throw new Error(
+					`Embedding dimension mismatch for profile ${profileId}: expected ${canonicalDimensions}, received ${preferredDimensions}`
+				);
+			}
+
+			return canonicalDimensions;
+		}
+
+		return preferredDimensions ?? profileDimensions;
+	}
+}

src/lib/server/search/vector.search.ts

@@ -1,16 +1,12 @@
 /**
  * Vector similarity search over stored snippet embeddings.
  *
- * SQLite does not natively support vector operations, so cosine similarity is
+ * Uses sqlite-vec vector_top_k() for ANN search instead of in-memory cosine
- * computed in JavaScript after loading candidate embeddings from the
+ * similarity computation over all embeddings.
- * snippet_embeddings table.
- *
- * Performance note: For repositories with > 50k snippets, pre-filtering by
- * FTS5 candidates before computing cosine similarity is recommended. For v1,
- * in-memory computation is acceptable.
  */
 
 import type Database from 'better-sqlite3';
+import { SqliteVecStore } from './sqlite-vec.store.js';
 
 // ---------------------------------------------------------------------------
 // Types
@@ -28,12 +24,6 @@ export interface VectorSearchOptions {
 	limit?: number;
 }
 
-/** Raw DB row from snippet_embeddings joined with snippets. */
-interface RawEmbeddingRow {
-	snippet_id: string;
-	embedding: Buffer;
-}
-
 // ---------------------------------------------------------------------------
 // Math helpers
 // ---------------------------------------------------------------------------
@@ -69,46 +59,26 @@ export function cosineSimilarity(a: Float32Array, b: Float32Array): number {
 // ---------------------------------------------------------------------------
 
 export class VectorSearch {
-	constructor(private readonly db: Database.Database) {}
+	private readonly sqliteVecStore: SqliteVecStore;
+
+	constructor(private readonly db: Database.Database) {
+		this.sqliteVecStore = new SqliteVecStore(db);
+	}
 
 	/**
 	 * Search stored embeddings by cosine similarity to the query embedding.
 	 *
+	 * Uses in-memory cosine similarity computation. The vec_embedding column
+	 * stores raw Float32 bytes for forward compatibility with vector-capable
+	 * libSQL builds; scoring is performed in JS using the same bytes.
+	 *
 	 * @param queryEmbedding - The embedded representation of the search query.
 	 * @param options - Search options including repositoryId, optional versionId, profileId, and limit.
 	 * @returns Results sorted by descending cosine similarity score.
 	 */
 	vectorSearch(queryEmbedding: Float32Array, options: VectorSearchOptions): VectorSearchResult[] {
-		const { repositoryId, versionId, profileId = 'local-default', limit = 50 } = options;
+		return this.sqliteVecStore
-
+			.queryNearestNeighbors(queryEmbedding, options)
-		let sql = `
+			.map((result) => ({ snippetId: result.snippetId, score: result.score }));
-			SELECT se.snippet_id, se.embedding
-			FROM snippet_embeddings se
-			JOIN snippets s ON s.id = se.snippet_id
-			WHERE s.repository_id = ?
-			  AND se.profile_id = ?
-		`;
-		const params: unknown[] = [repositoryId, profileId];
-
-		if (versionId) {
-			sql += ' AND s.version_id = ?';
-			params.push(versionId);
-		}
-
-		const rows = this.db.prepare<unknown[], RawEmbeddingRow>(sql).all(...params);
-
-		const scored: VectorSearchResult[] = rows.map((row) => {
-			const embedding = new Float32Array(
-				row.embedding.buffer,
-				row.embedding.byteOffset,
-				row.embedding.byteLength / 4
-			);
-			return {
-				snippetId: row.snippet_id,
-				score: cosineSimilarity(queryEmbedding, embedding)
-			};
-		});
-
-		return scored.sort((a, b) => b.score - a.score).slice(0, limit);
 	}
 }

src/lib/server/services/repository.service.test.ts

@@ -11,6 +11,8 @@ import Database from 'better-sqlite3';
 import { readFileSync } from 'node:fs';
 import { join } from 'node:path';
 import { RepositoryService } from './repository.service';
+import { loadSqliteVec, sqliteVecRowidTableName, sqliteVecTableName } from '$lib/server/db/sqlite-vec.js';
+import { SqliteVecStore } from '$lib/server/search/sqlite-vec.store.js';
 import {
 	AlreadyExistsError,
 	InvalidInputError,
@@ -25,6 +27,7 @@ import {
 function createTestDb(): Database.Database {
 	const client = new Database(':memory:');
 	client.pragma('foreign_keys = ON');
+	loadSqliteVec(client);
 
 	const migrationsFolder = join(import.meta.dirname, '../db/migrations');
 
@@ -33,7 +36,9 @@ function createTestDb(): Database.Database {
 		'0001_quick_nighthawk.sql',
 		'0002_silky_stellaris.sql',
 		'0003_multiversion_config.sql',
-		'0004_complete_sentry.sql'
+		'0004_complete_sentry.sql',
+		'0005_fix_stage_defaults.sql',
+		'0006_yielding_centennial.sql'
 	]) {
 		const statements = readFileSync(join(migrationsFolder, migration), 'utf-8')
 			.split('--> statement-breakpoint')
@@ -331,6 +336,41 @@ describe('RepositoryService.remove()', () => {
 	it('throws NotFoundError when the repository does not exist', () => {
 		expect(() => service.remove('/not/found')).toThrow(NotFoundError);
 	});
+
+	it('removes derived vec rows before the repository cascade deletes snippets', () => {
+		const docId = crypto.randomUUID();
+		const snippetId = crypto.randomUUID();
+		const embedding = Float32Array.from([1, 0, 0]);
+		const vecStore = new SqliteVecStore((service as unknown as { db: Database.Database }).db);
+		const db = (service as unknown as { db: Database.Database }).db;
+		const now = Math.floor(Date.now() / 1000);
+
+		db.prepare(
+			`INSERT INTO documents (id, repository_id, version_id, file_path, checksum, indexed_at)
+			 VALUES (?, '/facebook/react', NULL, 'README.md', 'repo-doc', ?)`
+		).run(docId, now);
+		db.prepare(
+			`INSERT INTO snippets (id, document_id, repository_id, version_id, type, content, created_at)
+			 VALUES (?, ?, '/facebook/react', NULL, 'info', 'repo snippet', ?)`
+		).run(snippetId, docId, now);
+		db.prepare(
+			`INSERT INTO snippet_embeddings (snippet_id, profile_id, model, dimensions, embedding, created_at)
+			 VALUES (?, 'local-default', 'test-model', 3, ?, ?)`
+		).run(snippetId, Buffer.from(embedding.buffer), now);
+		vecStore.upsertEmbedding('local-default', snippetId, embedding);
+
+		service.remove('/facebook/react');
+
+		const vecTable = sqliteVecTableName('local-default');
+		const rowidTable = sqliteVecRowidTableName('local-default');
+		const vecCount = db.prepare(`SELECT COUNT(*) as n FROM "${vecTable}"`).get() as { n: number };
+		const rowidCount = db.prepare(`SELECT COUNT(*) as n FROM "${rowidTable}"`).get() as {
+			n: number;
+		};
+
+		expect(vecCount.n).toBe(0);
+		expect(rowidCount.n).toBe(0);
+	});
 });
 
 // ---------------------------------------------------------------------------

src/lib/server/services/repository.service.ts

@@ -8,6 +8,7 @@ import { RepositoryMapper } from '$lib/server/mappers/repository.mapper.js';
 import { IndexingJobMapper } from '$lib/server/mappers/indexing-job.mapper.js';
 import { Repository, RepositoryEntity } from '$lib/server/models/repository.js';
 import { IndexingJob, IndexingJobEntity } from '$lib/server/models/indexing-job.js';
+import { SqliteVecStore } from '$lib/server/search/sqlite-vec.store.js';
 import { resolveGitHubId, resolveLocalId } from '$lib/server/utils/id-resolver';
 import {
 	AlreadyExistsError,
@@ -230,7 +231,11 @@ export class RepositoryService {
 		const existing = this.get(id);
 		if (!existing) throw new NotFoundError(`Repository ${id} not found`);
 
-		this.db.prepare(`DELETE FROM repositories WHERE id = ?`).run(id);
+		const sqliteVecStore = new SqliteVecStore(this.db);
+		this.db.transaction(() => {
+			sqliteVecStore.deleteEmbeddingsForRepository(id);
+			this.db.prepare(`DELETE FROM repositories WHERE id = ?`).run(id);
+		})();
 	}
 
 	/**

src/lib/server/services/version.service.test.ts

@@ -10,6 +10,8 @@ import { describe, it, expect } from 'vitest';
 import Database from 'better-sqlite3';
 import { readFileSync } from 'node:fs';
 import { join } from 'node:path';
+import { loadSqliteVec, sqliteVecRowidTableName, sqliteVecTableName } from '$lib/server/db/sqlite-vec.js';
+import { SqliteVecStore } from '$lib/server/search/sqlite-vec.store.js';
 import { VersionService } from './version.service';
 import { RepositoryService } from './repository.service';
 import { AlreadyExistsError, NotFoundError } from '$lib/server/utils/validation';
@@ -21,31 +23,27 @@ import { AlreadyExistsError, NotFoundError } from '$lib/server/utils/validation'
 function createTestDb(): Database.Database {
 	const client = new Database(':memory:');
 	client.pragma('foreign_keys = ON');
+	loadSqliteVec(client);
 
 	const migrationsFolder = join(import.meta.dirname, '../db/migrations');
 
-	// Apply all migration files in order
+	for (const migration of [
-	const migration0 = readFileSync(join(migrationsFolder, '0000_large_master_chief.sql'), 'utf-8');
+		'0000_large_master_chief.sql',
-	const migration1 = readFileSync(join(migrationsFolder, '0001_quick_nighthawk.sql'), 'utf-8');
+		'0001_quick_nighthawk.sql',
+		'0002_silky_stellaris.sql',
+		'0003_multiversion_config.sql',
+		'0004_complete_sentry.sql',
+		'0005_fix_stage_defaults.sql',
+		'0006_yielding_centennial.sql'
+	]) {
+		const statements = readFileSync(join(migrationsFolder, migration), 'utf-8')
+			.split('--> statement-breakpoint')
+			.map((statement) => statement.trim())
+			.filter(Boolean);
 
-	// Apply first migration
+		for (const statement of statements) {
-	const statements0 = migration0
+			client.exec(statement);
-		.split('--> statement-breakpoint')
+		}
-		.map((s) => s.trim())
-		.filter(Boolean);
-
-	for (const stmt of statements0) {
-		client.exec(stmt);
-	}
-
-	// Apply second migration
-	const statements1 = migration1
-		.split('--> statement-breakpoint')
-		.map((s) => s.trim())
-		.filter(Boolean);
-
-	for (const stmt of statements1) {
-		client.exec(stmt);
 	}
 
 	return client;
@@ -198,6 +196,44 @@ describe('VersionService.remove()', () => {
 		const doc = client.prepare(`SELECT id FROM documents WHERE id = ?`).get(docId);
 		expect(doc).toBeUndefined();
 	});
+
+	it('removes derived vec rows before deleting the version', () => {
+		const { client, versionService } = setup();
+		const version = versionService.add('/facebook/react', 'v18.3.0');
+		const docId = crypto.randomUUID();
+		const snippetId = crypto.randomUUID();
+		const embedding = Float32Array.from([0.5, 0.25, 0.125]);
+		const now = Math.floor(Date.now() / 1000);
+		const vecStore = new SqliteVecStore(client);
+
+		client.prepare(
+			`INSERT INTO documents (id, repository_id, version_id, file_path, checksum, indexed_at)
+			 VALUES (?, '/facebook/react', ?, 'README.md', 'version-doc', ?)`
+		).run(docId, version.id, now);
+		client.prepare(
+			`INSERT INTO snippets (id, document_id, repository_id, version_id, type, content, created_at)
+			 VALUES (?, ?, '/facebook/react', ?, 'info', 'version snippet', ?)`
+		).run(snippetId, docId, version.id, now);
+		client.prepare(
+			`INSERT INTO snippet_embeddings (snippet_id, profile_id, model, dimensions, embedding, created_at)
+			 VALUES (?, 'local-default', 'test-model', 3, ?, ?)`
+		).run(snippetId, Buffer.from(embedding.buffer), now);
+		vecStore.upsertEmbedding('local-default', snippetId, embedding);
+
+		versionService.remove('/facebook/react', 'v18.3.0');
+
+		const vecTable = sqliteVecTableName('local-default');
+		const rowidTable = sqliteVecRowidTableName('local-default');
+		const vecCount = client.prepare(`SELECT COUNT(*) as n FROM "${vecTable}"`).get() as {
+			n: number;
+		};
+		const rowidCount = client.prepare(`SELECT COUNT(*) as n FROM "${rowidTable}"`).get() as {
+			n: number;
+		};
+
+		expect(vecCount.n).toBe(0);
+		expect(rowidCount.n).toBe(0);
+	});
 });
 
 // ---------------------------------------------------------------------------

src/lib/server/services/version.service.ts

@@ -11,6 +11,7 @@ import {
 	RepositoryVersion,
 	RepositoryVersionEntity
 } from '$lib/server/models/repository-version.js';
+import { SqliteVecStore } from '$lib/server/search/sqlite-vec.store.js';
 import { AlreadyExistsError, NotFoundError } from '$lib/server/utils/validation';
 import { resolveTagToCommit, discoverVersionTags } from '$lib/server/utils/git.js';
 
@@ -99,9 +100,13 @@ export class VersionService {
 			throw new NotFoundError(`Version ${tag} not found for repository ${repositoryId}`);
 		}
 
-		this.db
+		const sqliteVecStore = new SqliteVecStore(this.db);
-			.prepare(`DELETE FROM repository_versions WHERE repository_id = ? AND tag = ?`)
+		this.db.transaction(() => {
-			.run(repositoryId, tag);
+			sqliteVecStore.deleteEmbeddingsForVersion(repositoryId, version.id);
+			this.db
+				.prepare(`DELETE FROM repository_versions WHERE repository_id = ? AND tag = ?`)
+				.run(repositoryId, tag);
+		})();
 	}
 
 	/**

src/routes/admin/jobs/+page.svelte

@@ -1,5 +1,10 @@
 <script lang="ts">
+	import { onMount } from 'svelte';
+	import { SvelteURLSearchParams } from 'svelte/reactivity';
+	import JobSkeleton from '$lib/components/admin/JobSkeleton.svelte';
 	import JobStatusBadge from '$lib/components/admin/JobStatusBadge.svelte';
+	import Toast from '$lib/components/admin/Toast.svelte';
+	import WorkerStatusPanel from '$lib/components/admin/WorkerStatusPanel.svelte';
 	import type { IndexingJobDto } from '$lib/server/models/indexing-job.js';
 
 	interface JobResponse {
@@ -7,174 +12,16 @@
 		total: number;
 	}
 
-	let jobs = $state<IndexingJobDto[]>([]);
+	interface ToastItem {
-	let loading = $state(true);
+		id: string;
-	let error = $state<string | null>(null);
+		message: string;
-	let actionInProgress = $state<string | null>(null);
+		type: 'success' | 'error' | 'info';
-
-	// Fetch jobs from API
-	async function fetchJobs() {
-		try {
-			const response = await fetch('/api/v1/jobs?limit=50');
-			if (!response.ok) {
-				throw new Error(`HTTP ${response.status}`);
-			}
-			const data: JobResponse = await response.json();
-			jobs = data.jobs;
-			error = null;
-		} catch (err) {
-			error = err instanceof Error ? err.message : 'Failed to fetch jobs';
-			console.error('Failed to fetch jobs:', err);
-		} finally {
-			loading = false;
-		}
 	}
 
-	// Action handlers
+	type FilterStatus = 'queued' | 'running' | 'done' | 'failed';
-	async function pauseJob(id: string) {
+	type JobAction = 'pause' | 'resume' | 'cancel';
-		actionInProgress = id;
-		try {
-			const response = await fetch(`/api/v1/jobs/${id}/pause`, { method: 'POST' });
-			if (!response.ok) {
-				const errorData = await response.json().catch(() => ({ message: 'Unknown error' }));
-				throw new Error(errorData.message || `HTTP ${response.status}`);
-			}
-			// Optimistic update
-			jobs = jobs.map((j) => (j.id === id ? { ...j, status: 'paused' as const } : j));
-			// Show success message
-			showToast('Job paused successfully');
-		} catch (err) {
-			const msg = err instanceof Error ? err.message : 'Failed to pause job';
-			showToast(msg, 'error');
-			console.error('Failed to pause job:', err);
-		} finally {
-			actionInProgress = null;
-			// Refresh after a short delay to get the actual state
-			setTimeout(fetchJobs, 500);
-		}
-	}
 
-	async function resumeJob(id: string) {
+	const filterStatuses: FilterStatus[] = ['queued', 'running', 'done', 'failed'];
-		actionInProgress = id;
-		try {
-			const response = await fetch(`/api/v1/jobs/${id}/resume`, { method: 'POST' });
-			if (!response.ok) {
-				const errorData = await response.json().catch(() => ({ message: 'Unknown error' }));
-				throw new Error(errorData.message || `HTTP ${response.status}`);
-			}
-			// Optimistic update
-			jobs = jobs.map((j) => (j.id === id ? { ...j, status: 'queued' as const } : j));
-			showToast('Job resumed successfully');
-		} catch (err) {
-			const msg = err instanceof Error ? err.message : 'Failed to resume job';
-			showToast(msg, 'error');
-			console.error('Failed to resume job:', err);
-		} finally {
-			actionInProgress = null;
-			setTimeout(fetchJobs, 500);
-		}
-	}
-
-	async function cancelJob(id: string) {
-		if (!confirm('Are you sure you want to cancel this job?')) {
-			return;
-		}
-
-		actionInProgress = id;
-		try {
-			const response = await fetch(`/api/v1/jobs/${id}/cancel`, { method: 'POST' });
-			if (!response.ok) {
-				const errorData = await response.json().catch(() => ({ message: 'Unknown error' }));
-				throw new Error(errorData.message || `HTTP ${response.status}`);
-			}
-			// Optimistic update
-			jobs = jobs.map((j) => (j.id === id ? { ...j, status: 'cancelled' as const } : j));
-			showToast('Job cancelled successfully');
-		} catch (err) {
-			const msg = err instanceof Error ? err.message : 'Failed to cancel job';
-			showToast(msg, 'error');
-			console.error('Failed to cancel job:', err);
-		} finally {
-			actionInProgress = null;
-			setTimeout(fetchJobs, 500);
-		}
-	}
-
-	// Simple toast notification (using alert for v1, can be enhanced later)
-	function showToast(message: string, type: 'success' | 'error' = 'success') {
-		// For v1, just use alert. In production, integrate with a toast library.
-		if (type === 'error') {
-			alert(`Error: ${message}`);
-		} else {
-			console.log(`✓ ${message}`);
-		}
-	}
-
-	// Auto-refresh with EventSource streaming + fallback polling
-	$effect(() => {
-		fetchJobs();
-
-		const es = new EventSource('/api/v1/jobs/stream');
-		let fallbackInterval: ReturnType<typeof setInterval> | null = null;
-
-		es.addEventListener('job-progress', (event) => {
-			const data = JSON.parse(event.data);
-			jobs = jobs.map((j) =>
-				j.id === data.jobId
-					? {
-							...j,
-							progress: data.progress,
-							stage: data.stage,
-							stageDetail: data.stageDetail,
-							processedFiles: data.processedFiles,
-							totalFiles: data.totalFiles
-						}
-					: j
-			);
-		});
-
-		es.addEventListener('job-done', () => {
-			void fetchJobs();
-		});
-
-		es.addEventListener('job-failed', () => {
-			void fetchJobs();
-		});
-
-		es.onerror = () => {
-			es.close();
-			// Fall back to polling on error
-			fallbackInterval = setInterval(fetchJobs, 3000);
-		};
-
-		return () => {
-			es.close();
-			if (fallbackInterval) {
-				clearInterval(fallbackInterval);
-			}
-		};
-	});
-
-	// Format date for display
-	function formatDate(date: Date | null): string {
-		if (!date) return '—';
-		return new Date(date).toLocaleString();
-	}
-
-	// Determine which actions are available for a job
-	function canPause(status: IndexingJobDto['status']): boolean {
-		return status === 'queued' || status === 'running';
-	}
-
-	function canResume(status: IndexingJobDto['status']): boolean {
-		return status === 'paused';
-	}
-
-	function canCancel(status: IndexingJobDto['status']): boolean {
-		return status !== 'done' && status !== 'failed';
-	}
-
-	// Map IndexingStage values to display labels
 	const stageLabels: Record<string, string> = {
 		queued: 'Queued',
 		differential: 'Diff',
@@ -187,9 +34,274 @@
 		failed: 'Failed'
 	};
 
+	let jobs = $state<IndexingJobDto[]>([]);
+	let total = $state(0);
+	let loading = $state(true);
+	let refreshing = $state(false);
+	let error = $state<string | null>(null);
+	let repositoryInput = $state('');
+	let selectedStatuses = $state<FilterStatus[]>([]);
+	let appliedRepositoryFilter = $state('');
+	let appliedStatuses = $state<FilterStatus[]>([]);
+	let pendingCancelJobId = $state<string | null>(null);
+	let rowActions = $state<Record<string, JobAction | undefined>>({});
+	let toasts = $state<ToastItem[]>([]);
+	let refreshTimer: ReturnType<typeof setTimeout> | null = null;
+
+	function buildJobsUrl(): string {
+		const params = new SvelteURLSearchParams({ limit: '50' });
+
+		if (appliedRepositoryFilter) {
+			params.set('repositoryId', appliedRepositoryFilter);
+		}
+
+		if (appliedStatuses.length > 0) {
+			params.set('status', appliedStatuses.join(','));
+		}
+
+		return `/api/v1/jobs?${params.toString()}`;
+	}
+
+	function pushToast(message: string, type: ToastItem['type'] = 'success') {
+		toasts = [...toasts, { id: crypto.randomUUID(), message, type }];
+	}
+
+	function clearRowAction(jobId: string) {
+		const next = { ...rowActions };
+		delete next[jobId];
+		rowActions = next;
+	}
+
+	function setRowAction(jobId: string, action: JobAction) {
+		rowActions = { ...rowActions, [jobId]: action };
+	}
+
+	function scheduleRefresh(delayMs = 500) {
+		if (refreshTimer) {
+			clearTimeout(refreshTimer);
+		}
+
+		refreshTimer = setTimeout(() => {
+			void fetchJobs({ background: true });
+		}, delayMs);
+	}
+
+	function hasAppliedFilters(): boolean {
+		return appliedRepositoryFilter.length > 0 || appliedStatuses.length > 0;
+	}
+
+	function sameStatuses(left: FilterStatus[], right: FilterStatus[]): boolean {
+		return left.length === right.length && left.every((status, index) => status === right[index]);
+	}
+
+	function filtersDirty(): boolean {
+		return repositoryInput.trim() !== appliedRepositoryFilter || !sameStatuses(selectedStatuses, appliedStatuses);
+	}
+
+	function isSpecificRepositoryId(repositoryId: string): boolean {
+		return repositoryId.split('/').filter(Boolean).length >= 2;
+	}
+
+	function matchesAppliedFilters(job: IndexingJobDto): boolean {
+		if (appliedRepositoryFilter) {
+			const repositoryFilter = appliedRepositoryFilter;
+			const repositoryMatches = isSpecificRepositoryId(repositoryFilter)
+				? job.repositoryId === repositoryFilter
+				: job.repositoryId === repositoryFilter || job.repositoryId.startsWith(`${repositoryFilter}/`);
+
+			if (!repositoryMatches) {
+				return false;
+			}
+		}
+
+		if (appliedStatuses.length === 0) {
+			return true;
+		}
+
+		return appliedStatuses.includes(job.status as FilterStatus);
+	}
+
+	function syncCancelState(nextJobs: IndexingJobDto[]) {
+		if (!pendingCancelJobId) {
+			return;
+		}
+
+		const pendingJob = nextJobs.find((job) => job.id === pendingCancelJobId);
+		if (!pendingJob || !canCancel(pendingJob.status)) {
+			pendingCancelJobId = null;
+		}
+	}
+
+	async function fetchJobs(options: { background?: boolean } = {}) {
+		const background = options.background ?? false;
+
+		if (background) {
+			refreshing = true;
+		} else {
+			loading = true;
+		}
+
+		try {
+			const response = await fetch(buildJobsUrl());
+			if (!response.ok) {
+				throw new Error(`HTTP ${response.status}`);
+			}
+
+			const data: JobResponse = await response.json();
+			jobs = data.jobs;
+			total = data.total;
+			error = null;
+			syncCancelState(data.jobs);
+		} catch (err) {
+			error = err instanceof Error ? err.message : 'Failed to fetch jobs';
+			console.error('Failed to fetch jobs:', err);
+		} finally {
+			loading = false;
+			refreshing = false;
+		}
+	}
+
+	async function runJobAction(job: IndexingJobDto, action: JobAction) {
+		setRowAction(job.id, action);
+
+		try {
+			const response = await fetch(`/api/v1/jobs/${job.id}/${action}`, { method: 'POST' });
+			const payload = await response.json().catch(() => ({ message: 'Unknown error' }));
+
+			if (!response.ok) {
+				throw new Error(payload.message || `HTTP ${response.status}`);
+			}
+
+			const updatedJob = payload.job as IndexingJobDto | undefined;
+			if (updatedJob) {
+				if (matchesAppliedFilters(updatedJob)) {
+					jobs = jobs.map((currentJob) =>
+						currentJob.id === updatedJob.id ? updatedJob : currentJob
+					);
+				} else {
+					jobs = jobs.filter((currentJob) => currentJob.id !== updatedJob.id);
+				}
+			}
+
+			pendingCancelJobId = null;
+			pushToast(`Job ${action}d successfully`);
+		} catch (err) {
+			const message = err instanceof Error ? err.message : `Failed to ${action} job`;
+			pushToast(message, 'error');
+			console.error(`Failed to ${action} job:`, err);
+		} finally {
+			clearRowAction(job.id);
+			scheduleRefresh();
+		}
+	}
+
+	function toggleStatusFilter(status: FilterStatus) {
+		selectedStatuses = selectedStatuses.includes(status)
+			? selectedStatuses.filter((candidate) => candidate !== status)
+			: [...selectedStatuses, status].sort(
+				(left, right) => filterStatuses.indexOf(left) - filterStatuses.indexOf(right)
+			);
+	}
+
+	function applyFilters(event?: SubmitEvent) {
+		event?.preventDefault();
+		appliedRepositoryFilter = repositoryInput.trim();
+		appliedStatuses = [...selectedStatuses];
+		pendingCancelJobId = null;
+		void fetchJobs();
+	}
+
+	function resetFilters() {
+		repositoryInput = '';
+		selectedStatuses = [];
+		appliedRepositoryFilter = '';
+		appliedStatuses = [];
+		pendingCancelJobId = null;
+		void fetchJobs();
+	}
+
+	function requestCancel(jobId: string) {
+		pendingCancelJobId = pendingCancelJobId === jobId ? null : jobId;
+	}
+
+	function formatDate(date: Date | string | null): string {
+		if (!date) {
+			return '—';
+		}
+
+		return new Date(date).toLocaleString();
+	}
+
+	function canPause(status: IndexingJobDto['status']): boolean {
+		return status === 'queued' || status === 'running';
+	}
+
+	function canResume(status: IndexingJobDto['status']): boolean {
+		return status === 'paused';
+	}
+
+	function canCancel(status: IndexingJobDto['status']): boolean {
+		return status !== 'done' && status !== 'failed' && status !== 'cancelled';
+	}
+
+	function isRowBusy(jobId: string): boolean {
+		return Boolean(rowActions[jobId]);
+	}
+
 	function getStageLabel(stage: string | undefined): string {
 		return stage ? (stageLabels[stage] ?? stage) : '—';
 	}
+
+	onMount(() => {
+		void fetchJobs();
+
+		const es = new EventSource('/api/v1/jobs/stream');
+		let fallbackInterval: ReturnType<typeof setInterval> | null = null;
+		const refreshJobs = () => {
+			void fetchJobs({ background: true });
+		};
+
+		es.addEventListener('job-progress', (event) => {
+			const data = JSON.parse(event.data) as Partial<IndexingJobDto> & { jobId?: string };
+			if (!data.jobId) {
+				return;
+			}
+
+			jobs = jobs.map((job) =>
+				job.id === data.jobId
+					? {
+							...job,
+							progress: data.progress ?? job.progress,
+							stage: data.stage ?? job.stage,
+							stageDetail: data.stageDetail ?? job.stageDetail,
+							processedFiles: data.processedFiles ?? job.processedFiles,
+							totalFiles: data.totalFiles ?? job.totalFiles,
+							status: data.status ?? job.status
+						}
+					: job
+			);
+		});
+
+		es.addEventListener('job-done', refreshJobs);
+		es.addEventListener('job-failed', refreshJobs);
+
+		es.onerror = () => {
+			es.close();
+			if (!fallbackInterval) {
+				fallbackInterval = setInterval(refreshJobs, 3000);
+			}
+		};
+
+		return () => {
+			es.close();
+			if (fallbackInterval) {
+				clearInterval(fallbackInterval);
+			}
+			if (refreshTimer) {
+				clearTimeout(refreshTimer);
+			}
+		};
+	});
 </script>
 
 <svelte:head>
@@ -202,23 +314,92 @@
 		<p class="mt-2 text-gray-600">Monitor and control indexing jobs</p>
 	</div>
 
-	{#if loading && jobs.length === 0}
+	<WorkerStatusPanel />
-		<div class="flex items-center justify-center py-12">
+
-			<div class="text-center">
+	<form class="mb-6 rounded-lg border border-gray-200 bg-white p-4 shadow-sm" onsubmit={applyFilters}>
-				<div
+		<div class="flex flex-col gap-4 lg:flex-row lg:items-end lg:justify-between">
-					class="inline-block h-8 w-8 animate-spin rounded-full border-4 border-solid border-blue-600 border-r-transparent"
+			<div class="flex-1">
-				></div>
+				<label class="mb-2 block text-sm font-medium text-gray-700" for="repository-filter">
-				<p class="mt-2 text-gray-600">Loading jobs...</p>
+					Repository filter
+				</label>
+				<input
+					id="repository-filter"
+					type="text"
+					bind:value={repositoryInput}
+					placeholder="/owner or /owner/repo"
+					class="w-full rounded-md border border-gray-300 px-3 py-2 text-sm text-gray-900 shadow-sm focus:border-blue-500 focus:outline-none focus:ring-2 focus:ring-blue-200"
+				/>
+				<p class="mt-2 text-xs text-gray-500">
+					Use an owner prefix like <code>/facebook</code> or a full repository ID like <code>/facebook/react</code>.
+				</p>
+			</div>
+
+			<div class="lg:min-w-72">
+				<span class="mb-2 block text-sm font-medium text-gray-700">Statuses</span>
+				<div class="flex flex-wrap gap-2">
+					{#each filterStatuses as status (status)}
+						<button
+							type="button"
+							onclick={() => toggleStatusFilter(status)}
+							class="rounded-full border px-3 py-1 text-xs font-semibold uppercase transition {selectedStatuses.includes(status)
+								? 'border-blue-600 bg-blue-50 text-blue-700'
+								: 'border-gray-300 text-gray-600 hover:border-gray-400 hover:text-gray-900'}"
+						>
+							{status}
+						</button>
+					{/each}
+				</div>
+			</div>
+
+			<div class="flex gap-2">
+				<button
+					type="submit"
+					disabled={!filtersDirty()}
+					class="rounded bg-blue-600 px-4 py-2 text-sm font-semibold text-white hover:bg-blue-700 disabled:cursor-not-allowed disabled:opacity-50"
+				>
+					Apply filters
+				</button>
+				<button
+					type="button"
+					onclick={resetFilters}
+					class="rounded border border-gray-300 px-4 py-2 text-sm font-semibold text-gray-700 hover:border-gray-400 hover:text-gray-900"
+				>
+					Reset
+				</button>
 			</div>
 		</div>
-	{:else if error && jobs.length === 0}
+	</form>
-		<div class="rounded-md bg-red-50 p-4">
+
-			<p class="text-sm text-red-800">Error: {error}</p>
+	<div class="mb-4 flex flex-col gap-2 text-sm text-gray-600 md:flex-row md:items-center md:justify-between">
+		<p>
+			Showing <span class="font-semibold text-gray-900">{jobs.length}</span> of
+			<span class="font-semibold text-gray-900">{total}</span> jobs
+		</p>
+		{#if hasAppliedFilters()}
+			<p class="text-xs text-gray-500">
+				Active filters:
+				{appliedRepositoryFilter || 'all repositories'}
+				{#if appliedStatuses.length > 0}
+					· {appliedStatuses.join(', ')}
+				{:else}
+					· all statuses
+				{/if}
+			</p>
+		{/if}
+	</div>
+
+	{#if error}
+		<div class="mb-4 rounded-md border border-red-200 bg-red-50 px-4 py-3 text-sm text-red-800">
+			{error}
 		</div>
-	{:else if jobs.length === 0}
+	{/if}
+
+	{#if !loading && jobs.length === 0}
 		<div class="rounded-md bg-gray-50 p-8 text-center">
 			<p class="text-gray-600">
-				No jobs found. Jobs will appear here when repositories are indexed.
+				{hasAppliedFilters()
+					? 'No jobs match the current filters.'
+					: 'No jobs found. Jobs will appear here when repositories are indexed.'}
 			</p>
 		</div>
 	{:else}
@@ -259,86 +440,117 @@
 					</tr>
 				</thead>
 				<tbody class="divide-y divide-gray-200 bg-white">
-					{#each jobs as job (job.id)}
+					{#if loading && jobs.length === 0}
+						<JobSkeleton rows={6} />
+					{:else}
+						{#each jobs as job (job.id)}
 						<tr class="hover:bg-gray-50">
 							<td class="px-6 py-4 text-sm font-medium whitespace-nowrap text-gray-900">
 								{job.repositoryId}
 								{#if job.versionId}
 									<span class="ml-1 text-xs text-gray-500">@{job.versionId}</span>
 								{/if}
+								<div class="mt-1 text-xs text-gray-400">{job.id}</div>
 							</td>
 							<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
-								<JobStatusBadge status={job.status} />
+								<JobStatusBadge status={job.status} spinning={job.status === 'running'} />
 							</td>
-						<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
+							<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
-							<div class="flex items-center gap-2">
+								<div class="flex items-center gap-2">
-								<span>{getStageLabel(job.stage)}</span>
+									<span>{getStageLabel(job.stage)}</span>
-								{#if job.stageDetail}
+									{#if job.stageDetail}
-									<span class="text-xs text-gray-400">{job.stageDetail}</span>
+										<span class="text-xs text-gray-400">{job.stageDetail}</span>
-								{/if}
+									{/if}
-							</div>
-						</td>
-						<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
-							<div class="flex items-center">
-								<span class="mr-2">{job.progress}%</span>
-								<div class="h-2 w-32 rounded-full bg-gray-200">
-									<div
-										class="h-2 rounded-full bg-blue-600 transition-all"
-										style="width: {job.progress}%"
-									></div>
 								</div>
-								{#if job.totalFiles > 0}
+							</td>
-									<span class="ml-2 text-xs text-gray-400">
+							<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
-										{job.processedFiles}/{job.totalFiles} files
+								<div class="space-y-2">
-									</span>
+									<div class="flex items-center gap-2">
-								{/if}
+										<span class="w-12 text-right text-xs font-semibold text-gray-600">{job.progress}%</span>
-							</div>
+										<div class="h-2 w-32 rounded-full bg-gray-200">
-						</td>
+											<div
+												class="h-2 rounded-full bg-blue-600 transition-all"
+												style="width: {job.progress}%"
+											></div>
+										</div>
+									</div>
+									{#if job.totalFiles > 0}
+										<div class="text-xs text-gray-400">
+											{job.processedFiles}/{job.totalFiles} files processed
+										</div>
+									{/if}
+								</div>
+							</td>
 							<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
 								{formatDate(job.createdAt)}
 							</td>
 							<td class="px-6 py-4 text-right text-sm font-medium whitespace-nowrap">
 								<div class="flex justify-end gap-2">
-									{#if canPause(job.status)}
+									{#if pendingCancelJobId === job.id}
 										<button
-											onclick={() => pauseJob(job.id)}
+											type="button"
-											disabled={actionInProgress === job.id}
+											onclick={() => void runJobAction(job, 'cancel')}
-											class="rounded bg-yellow-600 px-3 py-1 text-xs font-semibold text-white hover:bg-yellow-700 disabled:opacity-50"
+											disabled={isRowBusy(job.id)}
+											class="rounded bg-red-600 px-3 py-1 text-xs font-semibold text-white hover:bg-red-700 disabled:cursor-not-allowed disabled:opacity-50"
 										>
-											Pause
+											{rowActions[job.id] === 'cancel' ? 'Cancelling...' : 'Confirm cancel'}
 										</button>
-									{/if}
-									{#if canResume(job.status)}
 										<button
-											onclick={() => resumeJob(job.id)}
+											type="button"
-											disabled={actionInProgress === job.id}
+											onclick={() => requestCancel(job.id)}
-											class="rounded bg-green-600 px-3 py-1 text-xs font-semibold text-white hover:bg-green-700 disabled:opacity-50"
+											disabled={isRowBusy(job.id)}
+											class="rounded border border-gray-300 px-3 py-1 text-xs font-semibold text-gray-700 hover:border-gray-400 hover:text-gray-900 disabled:cursor-not-allowed disabled:opacity-50"
 										>
-											Resume
+											Keep job
 										</button>
-									{/if}
+									{:else}
-									{#if canCancel(job.status)}
+										{#if canPause(job.status)}
-										<button
+											<button
-											onclick={() => cancelJob(job.id)}
+												type="button"
-											disabled={actionInProgress === job.id}
+												onclick={() => void runJobAction(job, 'pause')}
-											class="rounded bg-red-600 px-3 py-1 text-xs font-semibold text-white hover:bg-red-700 disabled:opacity-50"
+												disabled={isRowBusy(job.id)}
-										>
+												class="rounded bg-yellow-600 px-3 py-1 text-xs font-semibold text-white hover:bg-yellow-700 disabled:cursor-not-allowed disabled:opacity-50"
-											Cancel
+											>
-										</button>
+												{rowActions[job.id] === 'pause' ? 'Pausing...' : 'Pause'}
-									{/if}
+											</button>
-									{#if !canPause(job.status) && !canResume(job.status) && !canCancel(job.status)}
+										{/if}
-										<span class="text-xs text-gray-400">—</span>
+										{#if canResume(job.status)}
+											<button
+												type="button"
+												onclick={() => void runJobAction(job, 'resume')}
+												disabled={isRowBusy(job.id)}
+												class="rounded bg-green-600 px-3 py-1 text-xs font-semibold text-white hover:bg-green-700 disabled:cursor-not-allowed disabled:opacity-50"
+											>
+												{rowActions[job.id] === 'resume' ? 'Resuming...' : 'Resume'}
+											</button>
+										{/if}
+										{#if canCancel(job.status)}
+											<button
+												type="button"
+												onclick={() => requestCancel(job.id)}
+												disabled={isRowBusy(job.id)}
+												class="rounded bg-red-600 px-3 py-1 text-xs font-semibold text-white hover:bg-red-700 disabled:cursor-not-allowed disabled:opacity-50"
+											>
+												Cancel
+											</button>
+										{/if}
+										{#if !canPause(job.status) && !canResume(job.status) && !canCancel(job.status)}
+											<span class="text-xs text-gray-400">—</span>
+										{/if}
 									{/if}
 								</div>
 							</td>
 						</tr>
-					{/each}
+						{/each}
+					{/if}
 				</tbody>
 			</table>
 		</div>
 
-		{#if loading}
+		{#if refreshing}
 			<div class="mt-4 text-center text-sm text-gray-500">Refreshing...</div>
 		{/if}
 	{/if}
 </div>
+
+<Toast bind:toasts={toasts} />

src/routes/api/v1/jobs/+server.ts

@@ -15,15 +15,39 @@ import { JobQueue } from '$lib/server/pipeline/job-queue.js';
 import { handleServiceError } from '$lib/server/utils/validation.js';
 import type { IndexingJob } from '$lib/types';
 
+const VALID_JOB_STATUSES: ReadonlySet<IndexingJob['status']> = new Set([
+	'queued',
+	'running',
+	'done',
+	'failed'
+]);
+
+function parseStatusFilter(searchValue: string | null): IndexingJob['status'] | Array<IndexingJob['status']> | undefined {
+	if (!searchValue) {
+		return undefined;
+	}
+
+	const statuses = [...new Set(
+		searchValue
+			.split(',')
+			.map((value) => value.trim())
+			.filter((value): value is IndexingJob['status'] => VALID_JOB_STATUSES.has(value as IndexingJob['status']))
+	)];
+
+	if (statuses.length === 0) {
+		return undefined;
+	}
+
+	return statuses.length === 1 ? statuses[0] : statuses;
+}
+
 export const GET: RequestHandler = ({ url }) => {
 	try {
 		const db = getClient();
 		const queue = new JobQueue(db);
 
-		const repositoryId = url.searchParams.get('repositoryId') ?? undefined;
+		const repositoryId = url.searchParams.get('repositoryId')?.trim() || undefined;
-		const status = (url.searchParams.get('status') ?? undefined) as
+		const status = parseStatusFilter(url.searchParams.get('status'));
-			| IndexingJob['status']
-			| undefined;
 		const limit = Math.min(parseInt(url.searchParams.get('limit') ?? '20', 10) || 20, 1000);
 
 		const jobs = queue.listJobs({ repositoryId, status, limit });

src/routes/api/v1/jobs/[id]/stream/+server.ts

@@ -44,7 +44,7 @@ export const GET: RequestHandler = ({ params, request }) => {
 						status: job.status,
 						error: job.error
 					};
-					controller.enqueue(`data: ${JSON.stringify(initialData)}\n\n`);
+					controller.enqueue(`event: job-progress\ndata: ${JSON.stringify(initialData)}\n\n`);
 
 					// Check for Last-Event-ID header for reconnect
 					const lastEventId = request.headers.get('Last-Event-ID');
@@ -57,6 +57,13 @@ export const GET: RequestHandler = ({ params, request }) => {
 
 					// Check if job is already done or failed - close immediately after first event
 					if (job.status === 'done' || job.status === 'failed') {
+						if (job.status === 'done') {
+							controller.enqueue(`event: job-done\ndata: ${JSON.stringify({ jobId })}\n\n`);
+						} else {
+							controller.enqueue(
+								`event: job-failed\ndata: ${JSON.stringify({ jobId, error: job.error })}\n\n`
+							);
+						}
 						controller.close();
 						return;
 					}
@@ -73,18 +80,29 @@ export const GET: RequestHandler = ({ params, request }) => {
 							controller.enqueue(value);
 
 							// Check if the incoming event indicates job completion
-							if (value.includes('event: done') || value.includes('event: failed')) {
+							if (
+								value.includes('event: job-done') ||
+								value.includes('event: job-failed')
+							) {
 								controller.close();
 								break;
 							}
 						}
 					} finally {
 						reader.releaseLock();
-						controller.close();
+						try {
+							controller.close();
+						} catch {
+							// Stream may already be closed after a terminal event.
+						}
 					}
 				} catch (err) {
 					console.error('SSE stream error:', err);
-					controller.close();
+					try {
+						controller.close();
+					} catch {
+						// Stream may already be closed.
+					}
 				}
 			}
 		});

src/routes/api/v1/sse-and-settings.integration.test.ts

@@ -18,6 +18,7 @@ import type { ProgressBroadcaster as BroadcasterType } from '$lib/server/pipelin
 let db: Database.Database;
 // Closed over by the vi.mock factory below.
 let mockBroadcaster: BroadcasterType | null = null;
+let mockPool: { getStatus: () => object; setMaxConcurrency?: (value: number) => void } | null = null;
 
 vi.mock('$lib/server/db/client', () => ({
 	getClient: () => db
@@ -29,12 +30,12 @@ vi.mock('$lib/server/db/client.js', () => ({
 
 vi.mock('$lib/server/pipeline/startup', () => ({
 	getQueue: () => null,
-	getPool: () => null
+	getPool: () => mockPool
 }));
 
 vi.mock('$lib/server/pipeline/startup.js', () => ({
 	getQueue: () => null,
-	getPool: () => null
+	getPool: () => mockPool
 }));
 
 vi.mock('$lib/server/pipeline/progress-broadcaster', async (importOriginal) => {
@@ -58,9 +59,11 @@ vi.mock('$lib/server/pipeline/progress-broadcaster.js', async (importOriginal) =
 // ---------------------------------------------------------------------------
 
 import { ProgressBroadcaster } from '$lib/server/pipeline/progress-broadcaster.js';
+import { GET as getJobsList } from './jobs/+server.js';
 import { GET as getJobStream } from './jobs/[id]/stream/+server.js';
 import { GET as getJobsStream } from './jobs/stream/+server.js';
 import { GET as getIndexingSettings, PUT as putIndexingSettings } from './settings/indexing/+server.js';
+import { GET as getWorkers } from './workers/+server.js';
 
 // ---------------------------------------------------------------------------
 // DB factory
@@ -306,6 +309,25 @@ describe('GET /api/v1/jobs/:id/stream', () => {
 		// The replay event should include the cached event data
 		expect(fullText).toContain('progress');
 	});
+
+	it('closes after receiving the broadcaster job-done event', async () => {
+		seedRepo(db);
+		const jobId = seedJob(db, { status: 'running', stage: 'parsing', progress: 10 });
+
+		const response = await getJobStream(makeEvent({ params: { id: jobId } }));
+		const reader = response.body!.getReader();
+
+		const initialChunk = await reader.read();
+		expect(String(initialChunk.value ?? '')).toContain('event: job-progress');
+
+		mockBroadcaster!.broadcast(jobId, '/test/repo', 'job-done', { jobId, status: 'done' });
+
+		const completionChunk = await reader.read();
+		expect(String(completionChunk.value ?? '')).toContain('event: job-done');
+
+		const closed = await reader.read();
+		expect(closed.done).toBe(true);
+	});
 });
 
 // ---------------------------------------------------------------------------
@@ -377,12 +399,125 @@ describe('GET /api/v1/jobs/stream', () => {
 });
 
 // ---------------------------------------------------------------------------
-// Test group 3: GET /api/v1/settings/indexing
+// Test group 3: GET /api/v1/jobs
+// ---------------------------------------------------------------------------
+
+describe('GET /api/v1/jobs', () => {
+	beforeEach(() => {
+		db = createTestDb();
+	});
+
+	it('supports repository prefix and comma-separated status filters', async () => {
+		seedRepo(db, '/facebook/react');
+		seedRepo(db, '/facebook/react-native');
+		seedRepo(db, '/vitejs/vite');
+
+		seedJob(db, { repository_id: '/facebook/react', status: 'queued' });
+		seedJob(db, { repository_id: '/facebook/react-native', status: 'running' });
+		seedJob(db, { repository_id: '/facebook/react', status: 'done' });
+		seedJob(db, { repository_id: '/vitejs/vite', status: 'queued' });
+
+		const response = await getJobsList(
+			makeEvent<Parameters<typeof getJobsList>[0]>({
+				url: 'http://localhost/api/v1/jobs?repositoryId=%2Ffacebook&status=queued,%20running'
+			})
+		);
+		const body = await response.json();
+
+		expect(response.status).toBe(200);
+		expect(body.total).toBe(2);
+		expect(body.jobs).toHaveLength(2);
+		expect(body.jobs.map((job: { repositoryId: string }) => job.repositoryId).sort()).toEqual([
+			'/facebook/react',
+			'/facebook/react-native'
+		]);
+		expect(body.jobs.map((job: { status: string }) => job.status).sort()).toEqual([
+			'queued',
+			'running'
+		]);
+	});
+
+	it('keeps exact-match behavior for specific repository IDs', async () => {
+		seedRepo(db, '/facebook/react');
+		seedRepo(db, '/facebook/react-native');
+
+		seedJob(db, { repository_id: '/facebook/react', status: 'queued' });
+		seedJob(db, { repository_id: '/facebook/react-native', status: 'queued' });
+
+		const response = await getJobsList(
+			makeEvent<Parameters<typeof getJobsList>[0]>({
+				url: 'http://localhost/api/v1/jobs?repositoryId=%2Ffacebook%2Freact&status=queued'
+			})
+		);
+		const body = await response.json();
+
+		expect(response.status).toBe(200);
+		expect(body.total).toBe(1);
+		expect(body.jobs).toHaveLength(1);
+		expect(body.jobs[0].repositoryId).toBe('/facebook/react');
+	});
+});
+
+// ---------------------------------------------------------------------------
+// Test group 4: GET /api/v1/workers
+// ---------------------------------------------------------------------------
+
+describe('GET /api/v1/workers', () => {
+	beforeEach(() => {
+		mockPool = null;
+	});
+
+	it('returns 503 when the worker pool is not initialized', async () => {
+		const response = await getWorkers(makeEvent<Parameters<typeof getWorkers>[0]>({}));
+
+		expect(response.status).toBe(503);
+	});
+
+	it('returns the current worker status snapshot', async () => {
+		mockPool = {
+			getStatus: () => ({
+				concurrency: 2,
+				active: 1,
+				idle: 1,
+				workers: [
+					{
+						index: 0,
+						state: 'running',
+						jobId: 'job-1',
+						repositoryId: '/test/repo',
+						versionId: null
+					},
+					{
+						index: 1,
+						state: 'idle',
+						jobId: null,
+						repositoryId: null,
+						versionId: null
+					}
+				]
+			})
+		};
+
+		const response = await getWorkers(makeEvent<Parameters<typeof getWorkers>[0]>({}));
+		const body = await response.json();
+
+		expect(response.status).toBe(200);
+		expect(body.active).toBe(1);
+		expect(body.workers[0].jobId).toBe('job-1');
+	});
+});
+
+// ---------------------------------------------------------------------------
+// Test group 5: GET /api/v1/settings/indexing
 // ---------------------------------------------------------------------------
 
 describe('GET /api/v1/settings/indexing', () => {
 	beforeEach(() => {
 		db = createTestDb();
+		mockPool = {
+			getStatus: () => ({ concurrency: 2, active: 0, idle: 2, workers: [] }),
+			setMaxConcurrency: vi.fn()
+		};
 	});
 
 	it('returns { concurrency: 2 } when no setting exists in DB', async () => {
@@ -417,12 +552,16 @@ describe('GET /api/v1/settings/indexing', () => {
 });
 
 // ---------------------------------------------------------------------------
-// Test group 4: PUT /api/v1/settings/indexing
+// Test group 6: PUT /api/v1/settings/indexing
 // ---------------------------------------------------------------------------
 
 describe('PUT /api/v1/settings/indexing', () => {
 	beforeEach(() => {
 		db = createTestDb();
+		mockPool = {
+			getStatus: () => ({ concurrency: 2, active: 0, idle: 2, workers: [] }),
+			setMaxConcurrency: vi.fn()
+		};
 	});
 
 	function makePutEvent(body: unknown) {

src/routes/api/v1/workers/+server.ts

@@ -0,0 +1,16 @@
+import type { RequestHandler } from './$types';
+import { getPool } from '$lib/server/pipeline/startup.js';
+import { handleServiceError } from '$lib/server/utils/validation.js';
+
+export const GET: RequestHandler = () => {
+	try {
+		const pool = getPool();
+		if (!pool) {
+			return new Response('Service unavailable', { status: 503 });
+		}
+
+		return Response.json(pool.getStatus());
+	} catch (error) {
+		return handleServiceError(error);
+	}
+};