diff --git a/packages/core/src/__tests__/db.test.ts b/packages/core/src/__tests__/db.test.ts
index 8ca0727d71..5afb455c8b 100644
--- a/packages/core/src/__tests__/db.test.ts
+++ b/packages/core/src/__tests__/db.test.ts
@@ -3216,9 +3216,10 @@ describe("Database.recoverIfCorrupt startup guard", () => {
     const dbPath = join(fusionDir, "fusion.db");
     const db = new Database(fusionDir);
     db.init();
-    // Span many pages so mid-file corruption lands on a B-tree page.
+    // Span enough pages so mid-file corruption lands on a B-tree page
+    // without overfeeding sqlite3 .recover.
     db.transaction(() => {
-      for (let i = 0; i < 3000; i++) {
+      for (let i = 0; i < 100; i++) {
         db.prepare("INSERT INTO activityLog (id, timestamp, type, details) VALUES (?, ?, 'test', '{}')").run(
           `row-${i}`,
           new Date().toISOString(),
diff --git a/packages/core/vitest.config.ts b/packages/core/vitest.config.ts
index 27b6c2bc6c..4a3d17e6b5 100644
--- a/packages/core/vitest.config.ts
+++ b/packages/core/vitest.config.ts
@@ -15,7 +15,6 @@ export default defineConfig({
   test: {
     include: ["src/**/*.test.ts"],
     exclude: [
-      "src/__tests__/db.test.ts",
       "src/__tests__/soft-delete-tasks.test.ts",
       "src/__tests__/store-get-task-columns.test.ts",
       "src/__tests__/store-create-summarize-deferred-hook.test.ts",
diff --git a/scripts/lib/test-quarantine.json b/scripts/lib/test-quarantine.json
index 8b80267fc4..53f09133da 100644
--- a/scripts/lib/test-quarantine.json
+++ b/scripts/lib/test-quarantine.json
@@ -51,11 +51,6 @@
       "reason": "Flake observed during FN-6324 verification: broad `pnpm test` failed with `Task FN-001 not found` after temp-root disappearance symptoms in adjacent core tests, alongside a leaked fusion-test-workers temp root. The task only changed agent role policy/settings/heartbeat routing, so this is unrelated temp redirect suite-order/concurrency sensitivity.",
       "quarantinedAt": "2026-06-12"
     },
-    {
-      "file": "packages/core/src/__tests__/db.test.ts",
-      "reason": "Flake observed during FN-6299 verification: broad `pnpm --filter @fusion/core test` timed out in `Database.recoverIfCorrupt startup guard > rebuilds a malformed database and preserves the corrupt original` after 15s; earlier `pnpm test` attempt SIGTERM'd the core package and leaked a fusion-test-workers temp dir. Follow-up FN-6334.",
-      "quarantinedAt": "2026-06-12"
-    },
     {
       "file": "packages/core/src/__tests__/store-create-summarize-deferred-hook.test.ts",
       "reason": "Flake observed during FN-6320 final broad `pnpm test`: `store-create.test.ts > TaskStore > createTask with title summarization > defers the task-created hook until store-managed summarize completes` timed out because the registered task-created hook had zero calls after the gated store-managed summarizer prompt was released. FN-6326 cross-check: the test passed twice standalone after FN-6313, and product code in `TaskStore.createTask` suppresses the synchronous hook only while `hasPendingSummarization` is true, then unconditionally refreshes the task and calls `invokeTaskCreatedHook(latestTask)` after `onSummarize` settles across success/null/throw branches. The broad/package load failure was therefore classified as suite-load/harness sensitivity rather than a confirmed product defect; the single flaky `it` was extracted so the rest of `store-create.test.ts` remains covered.",