test(core): stabilize release gate timeouts (#167)

Release highlights:
- Deliver reliable release validation for Ragmir 4.2.0 retrieval quality improvements.

Release details:
- Align three integration test budgets with measured CI workloads.
- Preserve retrieval, catalog, lock, and child-process assertions.

Verification:
- Pass pnpm validate with 633 tests, API checks, smokes, packaging, and release checks.
- Pass Linux/macOS portability and all TypeScript/Python CodeQL analyses.

Author: jb-thery

packages/ragmir-core/src/context-resources.test.ts

@@ -104,5 +104,5 @@ describe("context resources", () => {
     expect(secondPage.indexedFiles).toHaveLength(5)
     expect(secondPage.indexedFiles[0]?.source).toBe(".ragmir/raw/source-50.md")
     expect(secondPage.page).toEqual({ offset: 50, limit: 10, nextOffset: null })
-  })
+  }, 15_000)
 })

packages/ragmir-core/src/index-write-lock.test.ts

@@ -216,7 +216,7 @@ describe("withIndexWriteLock", () => {
       staleInIndex: [],
       totalChunks: rows.length,
     })
-  })
+  }, 30_000)
 })
 
 interface ChildEvent {

packages/ragmir-core/src/query.test.ts

@@ -515,7 +515,7 @@ describe("search", () => {
       lexicalExactPathMatch: true,
     })
     expect(vectorCandidateLimit(1)).toBeLessThan(90)
-  }, 10_000)
+  }, 20_000)
 
   it("should explain complete lexical fallback activation and coverage", async () => {
     const root = await mkdtemp(path.join(os.tmpdir(), "ragmir-query-fallback-explain-"))