chore(TRUEREF-0022): fix lint errors and update architecture docs

- Fix 15 ESLint errors across pipeline workers, SSE endpoints, and UI
- Replace explicit any with proper entity types in worker entries
- Remove unused imports and variables (basename, SSEEvent, getBroadcasterFn, seedRules)
- Use empty catch clauses instead of unused error variables
- Use SvelteSet for reactive Set state in repository page
- Fix operator precedence in nullish coalescing expression
- Replace $state+$effect with $derived for concurrency input
- Use resolve() directly in href for navigation lint rule
- Update ARCHITECTURE.md and FINDINGS.md for worker-thread architecture

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

@@ -3,7 +3,7 @@ import Database from 'better-sqlite3';
 import { EmbeddingService } from '$lib/server/embeddings/embedding.service.js';
 import { createProviderFromProfile } from '$lib/server/embeddings/registry.js';
 import { EmbeddingProfileMapper } from '$lib/server/mappers/embedding-profile.mapper.js';
-import { EmbeddingProfileEntity } from '$lib/server/models/embedding-profile.js';
+import { EmbeddingProfileEntity, type EmbeddingProfileEntityProps } from '$lib/server/models/embedding-profile.js';
 import type { EmbedWorkerRequest, EmbedWorkerResponse, WorkerInitData } from './worker-types.js';
 
 const { dbPath, embeddingProfileId } = workerData as WorkerInitData;
@@ -35,7 +35,7 @@ if (!rawProfile) {
 	process.exit(1);
 }
 
-const profileEntity = new EmbeddingProfileEntity(rawProfile as any);
+const profileEntity = new EmbeddingProfileEntity(rawProfile as EmbeddingProfileEntityProps);
 const profile = EmbeddingProfileMapper.fromEntity(profileEntity);
 
 // Create provider and embedding service

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

@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'vitest';
-import { ProgressBroadcaster, type SSEEvent } from './progress-broadcaster.js';
+import { ProgressBroadcaster } from './progress-broadcaster.js';
 
 describe('ProgressBroadcaster', () => {
 	it('subscribe returns a readable stream', async () => {

src/lib/server/pipeline/startup.ts

@@ -16,7 +16,8 @@ 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 { initBroadcaster, getBroadcaster as getBroadcasterFn } from './progress-broadcaster.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';
 import { fileURLToPath } from 'node:url';
@@ -101,7 +102,7 @@ export function initializePipeline(
 				workerScript,
 				embedWorkerScript,
 				dbPath: options.dbPath,
-				onProgress: (jobId: string, msg: any) => {
+				onProgress: (jobId: string, msg: ParseWorkerResponse) => {
 					// Update DB with progress
 					db.prepare(
 						`UPDATE indexing_jobs

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

@@ -4,7 +4,7 @@ import { IndexingPipeline } from './indexing.pipeline.js';
 import { crawl as githubCrawl } from '$lib/server/crawler/github.crawler.js';
 import { LocalCrawler } from '$lib/server/crawler/local.crawler.js';
 import { IndexingJobMapper } from '$lib/server/mappers/indexing-job.mapper.js';
-import { IndexingJobEntity } from '$lib/server/models/indexing-job.js';
+import { IndexingJobEntity, type IndexingJobEntityProps } from '$lib/server/models/indexing-job.js';
 import type { ParseWorkerRequest, ParseWorkerResponse, WorkerInitData } from './worker-types.js';
 import type { IndexingStage } from '$lib/types.js';
 
@@ -30,7 +30,7 @@ parentPort!.on('message', async (msg: ParseWorkerRequest) => {
 			if (!rawJob) {
 				throw new Error(`Job ${msg.jobId} not found`);
 			}
-			const job = IndexingJobMapper.fromEntity(new IndexingJobEntity(rawJob as any));
+			const job = IndexingJobMapper.fromEntity(new IndexingJobEntity(rawJob as IndexingJobEntityProps));
 
 			await pipeline.run(
 				job,

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

@@ -1,6 +1,5 @@
 import { Worker } from 'node:worker_threads';
 import { existsSync } from 'node:fs';
-import { basename } from 'node:path';
 import type { ParseWorkerRequest, ParseWorkerResponse, EmbedWorkerRequest, EmbedWorkerResponse, WorkerInitData } from './worker-types.js';
 
 export interface WorkerPoolOptions {
@@ -286,7 +285,7 @@ export class WorkerPool {
 		for (const worker of this.workers) {
 			try {
 				worker.postMessage(msg);
-			} catch (e) {
+			} catch {
 				// Worker might already be exited
 			}
 		}
@@ -296,7 +295,7 @@ export class WorkerPool {
 			try {
 				const embedMsg: EmbedWorkerRequest = { type: 'shutdown' };
 				this.embedWorker.postMessage(embedMsg);
-			} catch (e) {
+			} catch {
 				// Worker might already be exited
 			}
 		}
@@ -317,7 +316,7 @@ export class WorkerPool {
 		for (const worker of this.workers) {
 			try {
 				worker.terminate();
-			} catch (e) {
+			} catch {
 				// Already terminated
 			}
 		}
@@ -325,7 +324,7 @@ export class WorkerPool {
 		if (this.embedWorker) {
 			try {
 				this.embedWorker.terminate();
-			} catch (e) {
+			} catch {
 				// Already terminated
 			}
 		}