Fix Vitest Windows CI EPERM Hang

stats.json

@@ -1,8 +1,8 @@
 {
   "schemaVersion": 1,
   "label": "users",
-  "message": "340.8k+",
+  "message": "426.3k+",
   "color": "brightgreen",
-  "npm": "310.9k+",
-  "marketplace": "29.8k+"
+  "npm": "395.5k+",
+  "marketplace": "30.8k+"
 }

tests/adapters/omp-plugin.test.ts

@@ -20,6 +20,13 @@ import "../setup-home";
  */
 
 import { describe, it, expect, beforeEach, afterEach } from "vitest";
+
+const activeDBs: Array<{ close?: () => void }> = [];
+afterEach(() => {
+  for (const db of activeDBs) { try { db.close?.(); } catch {} }
+  activeDBs.length = 0;
+});
+
 import { mkdtempSync, rmSync } from "node:fs";
 import { join } from "node:path";
 import { tmpdir } from "node:os";
@@ -206,6 +213,7 @@ describe("OMP plugin", () => {
           sessionsDir: adapter.getSessionDir(),
         }),
       });
+      activeDBs.push(db as any);
       const latest = db.getLatestSessionId();
       expect(latest).not.toBeNull();
       const events = db.getEvents(latest as string);
@@ -252,6 +260,7 @@ describe("OMP plugin", () => {
           sessionsDir: adapter.getSessionDir(),
         }),
       });
+      activeDBs.push(db as any);
       const latest = db.getLatestSessionId();
       expect(latest).not.toBeNull();
     });
@@ -309,6 +318,7 @@ describe("OMP plugin", () => {
           sessionsDir: adapter.getSessionDir(),
         }),
       });
+      activeDBs.push(db as any);
       const resume = db.getResume(sid);
       expect(resume).not.toBeNull();
       expect(resume?.snapshot.length).toBeGreaterThan(0);
@@ -357,7 +367,10 @@ describe("OMP plugin", () => {
         expect(fileExists(canonicalPath)).toBe(true);
 
         // Verify the canonical file is the one with our session_start row.
-        const db = new SessionDB({ dbPath: canonicalPath });
+        const db = new SessionDB({ dbPath:   canonicalPath   });
+      activeDBs.push(db as any);
+      activeDBs.push(db as any);
+      activeDBs.push(db as any);
         try {
           const latest = db.getLatestSessionId();
           expect(latest).not.toBeNull();

tests/core/search-project-filter.test.ts

@@ -17,28 +17,42 @@
  *            null (no filter), explicit string → that string.
  */
 
-import { describe, test, expect } from "vitest";
+import { describe, test, expect, afterEach } from "vitest";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { randomUUID } from "node:crypto";
 import { ContentStore } from "../../src/store.js";
 import { SessionDB } from "../../src/session/db.js";
 import { searchAllSources } from "../../src/search/unified.js";
 
+const activeDBs: Array<{ close?: () => void, cleanup?: () => void }> = [];
+
+afterEach(() => {
+  for (const db of activeDBs) {
+    try { db.cleanup?.(); } catch {}
+    try { db.close?.(); } catch {}
+  }
+  activeDBs.length = 0;
+});
+
 function createStore(): ContentStore {
   const path = join(
     tmpdir(),
     `ctx-issue737-store-${Date.now()}-${Math.random().toString(36).slice(2)}.db`,
   );
-  return new ContentStore(path);
+  const store = new ContentStore(path);
+  activeDBs.push(store as any);
+  return store;
 }
 
 function createSessionDB(): SessionDB {
   const path = join(
     tmpdir(),
     `ctx-issue737-session-${Date.now()}-${Math.random().toString(36).slice(2)}.db`,
   );
-  return new SessionDB({ dbPath: path });
+  const db = new SessionDB({ dbPath: path });
+  activeDBs.push(db as any);
+  return db;
 }
 
 // ═══════════════════════════════════════════════════════════

tests/integration/commit-message-symmetry.test.ts

@@ -12,6 +12,13 @@
  */
 
 import { describe, test, beforeEach, afterEach, expect, vi } from "vitest";
+
+const activeDBs: Array<{ close?: () => void }> = [];
+afterEach(() => {
+  for (const db of activeDBs) { try { db.close?.(); } catch {} }
+  activeDBs.length = 0;
+});
+
 import { mkdtempSync, rmSync, writeFileSync, mkdirSync } from "node:fs";
 import { join, dirname } from "node:path";
 import { tmpdir } from "node:os";
@@ -78,6 +85,7 @@ describe("session-loaders — Bug 2 repro: commit_message symmetric stamp", () =
 
   test("session with 1 commit + 3 file edits — every body MUST carry commit_message alongside has_commit", async () => {
     const db = new SessionDB({ dbPath });
+      activeDBs.push(db as any);
     const sid = "commit-msg-symmetry-" + Date.now();
     db.ensureSession(sid, fakeHome);
 

tests/integration/cross-project-attribution.test.ts

@@ -17,6 +17,13 @@
  */
 
 import { describe, test, beforeEach, afterEach, expect, vi } from "vitest";
+
+const activeDBs: Array<{ close?: () => void }> = [];
+afterEach(() => {
+  for (const db of activeDBs) { try { db.close?.(); } catch {} }
+  activeDBs.length = 0;
+});
+
 import { mkdtempSync, rmSync, writeFileSync, mkdirSync } from "node:fs";
 import { join, dirname } from "node:path";
 import { tmpdir } from "node:os";
@@ -102,7 +109,8 @@ describe("cross-project attribution — Bug 7 repro", () => {
   });
 
   test("tracer: cwd=projA but file_edit on projB/foo.ts → body.project resolves to projB's canonical id", async () => {
-    const db = new SessionDB({ dbPath: join(fakeHome, "test.db") });
+    const db = new SessionDB({ dbPath:   join(fakeHome, "test.db")   });
+      activeDBs.push(db as any);
     const sid = "cross-proj-" + Date.now();
     db.ensureSession(sid, projA);
 
@@ -145,7 +153,8 @@ describe("cross-project attribution — Bug 7 repro", () => {
   });
 
   test("batched events split across projA + projB → each attributes to its own repo", async () => {
-    const db = new SessionDB({ dbPath: join(fakeHome, "test.db") });
+    const db = new SessionDB({ dbPath:   join(fakeHome, "test.db")   });
+      activeDBs.push(db as any);
     const sid = "cross-proj-batch-" + Date.now();
     db.ensureSession(sid, projA);
 
@@ -172,7 +181,8 @@ describe("cross-project attribution — Bug 7 repro", () => {
   });
 
   test("Bug 8 — Bash 'git -C /projB status' via real extractEvents → project=projB", async () => {
-    const db = new SessionDB({ dbPath: join(fakeHome, "test.db") });
+    const db = new SessionDB({ dbPath:   join(fakeHome, "test.db")   });
+      activeDBs.push(db as any);
     const sid = "bash-c-" + Date.now();
     db.ensureSession(sid, projA);
 
@@ -212,7 +222,8 @@ describe("cross-project attribution — Bug 7 repro", () => {
   });
 
   test("Bug 8 — Bash 'cd /projB && npm test' → project=projB", async () => {
-    const db = new SessionDB({ dbPath: join(fakeHome, "test.db") });
+    const db = new SessionDB({ dbPath:   join(fakeHome, "test.db")   });
+      activeDBs.push(db as any);
     const sid = "bash-cd-" + Date.now();
     db.ensureSession(sid, projA);
 
@@ -242,7 +253,8 @@ describe("cross-project attribution — Bug 7 repro", () => {
   });
 
   test("Bash without any path indicator → falls back to cwd (projA) — expected behavior", async () => {
-    const db = new SessionDB({ dbPath: join(fakeHome, "test.db") });
+    const db = new SessionDB({ dbPath:   join(fakeHome, "test.db")   });
+      activeDBs.push(db as any);
     const sid = "bash-no-path-" + Date.now();
     db.ensureSession(sid, projA);
 

tests/integration/seed-parity-coverage.test.ts

@@ -12,6 +12,13 @@
  */
 
 import { describe, test, beforeEach, afterEach, expect, vi } from "vitest";
+
+const activeDBs: Array<{ close?: () => void }> = [];
+afterEach(() => {
+  for (const db of activeDBs) { try { db.close?.(); } catch {} }
+  activeDBs.length = 0;
+});
+
 import { mkdtempSync, rmSync, writeFileSync, mkdirSync } from "node:fs";
 import { dirname, join } from "node:path";
 import { tmpdir } from "node:os";
@@ -132,6 +139,7 @@ describe("seed-parity coverage gate", () => {
 
   test("every outgoing event carries all 21 universal seed-parity columns", async () => {
     const db = new SessionDB({ dbPath });
+      activeDBs.push(db as any);
     const sessionId = "parity-session-" + Date.now();
     db.ensureSession(sessionId, fakeHome);
 
@@ -181,6 +189,7 @@ describe("seed-parity coverage gate", () => {
 
   test("variant columns populate by category", async () => {
     const db = new SessionDB({ dbPath });
+      activeDBs.push(db as any);
     const sessionId = "parity-variants-" + Date.now();
     db.ensureSession(sessionId, fakeHome);
 
@@ -224,6 +233,7 @@ describe("seed-parity coverage gate", () => {
 
   test("rollup snapshot reflects session-wide aggregates", async () => {
     const db = new SessionDB({ dbPath });
+      activeDBs.push(db as any);
     const sessionId = "parity-rollup-" + Date.now();
     db.ensureSession(sessionId, fakeHome);
 
@@ -263,6 +273,7 @@ describe("seed-parity coverage gate", () => {
 
   test("Bash metadata: command_type/command_tool/exit_code derived algorithmically", async () => {
     const db = new SessionDB({ dbPath });
+      activeDBs.push(db as any);
     const sid = "bash-meta-" + Date.now();
     db.ensureSession(sid, fakeHome);
 
@@ -301,6 +312,7 @@ describe("seed-parity coverage gate", () => {
 
   test("blocker_status: derived from canonical event type, not regex", async () => {
     const db = new SessionDB({ dbPath });
+      activeDBs.push(db as any);
     const sid = "blocker-" + Date.now();
     db.ensureSession(sid, fakeHome);
 
@@ -328,6 +340,7 @@ describe("seed-parity coverage gate", () => {
 
   test("latency_ms: read from PreToolUse marker, duration_bucket derived", async () => {
     const db = new SessionDB({ dbPath });
+      activeDBs.push(db as any);
     const sid = "latency-" + Date.now();
     db.ensureSession(sid, fakeHome);
 
@@ -358,6 +371,7 @@ describe("seed-parity coverage gate", () => {
 
   test("variant matrix — coverage report", async () => {
     const db = new SessionDB({ dbPath });
+      activeDBs.push(db as any);
     const sessionId = "parity-matrix-" + Date.now();
     db.ensureSession(sessionId, fakeHome);