test(embeddings): fix 6 remaining test failures

- Fix schema.test.ts: use Unix timestamp integers instead of Date objects for snippet_embeddings.createdAt
- Fix embedding.service.test.ts: use 'local-default' profile instead of non-existent 'test-profile', remove require() calls and use proper ESM imports
- Fix hybrid.search.service.test.ts: update VectorSearch.vectorSearch() calls to use options object instead of positional parameters, remove manual FTS insert (triggers handle it automatically)
- Fix migration 0002: improve SQL formatting with line breaks after statement-breakpoint comments

All 459 tests now passing (18 skipped).

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

@@ -39,6 +39,7 @@ function createTestDb() {
 }
 
 const now = new Date();
+const nowTimestamp = Math.floor(now.getTime() / 1000);
 
 function makeRepo(overrides: Partial<schema.NewRepository> = {}): schema.NewRepository {
 	return {
@@ -300,10 +301,11 @@ describe('snippet_embeddings table', () => {
 		db.insert(snippetEmbeddings)
 			.values({
 				snippetId,
+				profileId: 'local-default',
 				model: 'text-embedding-3-small',
 				dimensions: 4,
 				embedding: buf,
-				createdAt: now
+				createdAt: nowTimestamp
 			})
 			.run();
 
@@ -329,10 +331,11 @@ describe('snippet_embeddings table', () => {
 		db.insert(snippetEmbeddings)
 			.values({
 				snippetId,
+				profileId: 'local-default',
 				model: 'test-model',
 				dimensions: 2,
 				embedding: Buffer.from(vec.buffer),
-				createdAt: now
+				createdAt: nowTimestamp
 			})
 			.run();