diff --git a/CLAUDE.md b/CLAUDE.md
index 4032af044..cd2a86acc 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -21,26 +21,20 @@ loaded from `~/.sf/agent/extensions/sf/` (compiled JS) are **not** redirected.
 
 ## Running tests
 
-**Use the lightweight `--test` runner, not `npm run test:coverage`.**
-
-The coverage runner (`c8` + `--cpu-prof` + `--heap-prof`) spawns 10–15 heavy
-worker processes per invocation. If a background run is killed or times out,
-those workers are left alive, saturating all CPUs (~700% observed).
+**Use vitest — no pre-compilation step needed.**
 
 ```bash
 # Run a specific test file (fast, no coverage overhead):
-node --import ./src/resources/extensions/sf/tests/resolve-ts.mjs \
-     --experimental-strip-types \
-     --test src/resources/extensions/sf/tests/<name>.test.ts
+npx vitest run src/resources/extensions/sf/tests/<name>.test.ts --config vitest.config.ts
 
 # Run the full SF extension test suite:
-npm test
-```
+npm run test:unit
 
-If the machine feels slow, check for stray workers:
-```bash
-ps aux | grep "heap-prof-interval" | grep -v grep
-# Kill them: ... | awk '{print $2}' | xargs kill -9
+# Run only tests affected by recent changes (fast feedback loop):
+npx vitest run --changed --config vitest.config.ts
+
+# Watch mode for active development:
+npx vitest --config vitest.config.ts
 ```
 
 **Do not use Python for one-off JSON/hash work.** The resource fingerprint in
diff --git a/packages/daemon/src/daemon.test.ts b/packages/daemon/src/daemon.test.ts
index 550b6d6a2..943bb6e6f 100644
--- a/packages/daemon/src/daemon.test.ts
+++ b/packages/daemon/src/daemon.test.ts
@@ -1,4 +1,4 @@
-import { describe, it, afterEach, before, after } from 'vitest';
+import { describe, it, afterEach, beforeAll, afterAll } from 'vitest';
 import assert from 'node:assert/strict';
 import { mkdtempSync, writeFileSync, readFileSync, rmSync, existsSync, mkdirSync } from 'node:fs';
 import { join } from 'node:path';
@@ -68,13 +68,13 @@ describe('resolveConfigPath', () => {
 describe('loadConfig', () => {
   // Save and clear DISCORD_BOT_TOKEN for this suite — env override interferes with file-token assertions
   let savedToken: string | undefined;
-  before(() => {
+  beforeAll(() => {
     savedToken = process.env['DISCORD_BOT_TOKEN'];
     delete process.env['DISCORD_BOT_TOKEN'];
   });
   afterEach(() => {}); // cleanup dirs handled by top-level afterEach
   // Restore after all tests in this suite
-  after(() => {
+  afterAll(() => {
     if (savedToken !== undefined) process.env['DISCORD_BOT_TOKEN'] = savedToken;
   });
 
@@ -143,11 +143,11 @@ log:
 describe('validateConfig', () => {
   // Save and clear DISCORD_BOT_TOKEN for tests that don't expect it
   let savedToken: string | undefined;
-  before(() => {
+  beforeAll(() => {
     savedToken = process.env['DISCORD_BOT_TOKEN'];
     delete process.env['DISCORD_BOT_TOKEN'];
   });
-  after(() => {
+  afterAll(() => {
     if (savedToken !== undefined) process.env['DISCORD_BOT_TOKEN'] = savedToken;
   });
 
diff --git a/packages/mcp-server/src/readers/graph.test.ts b/packages/mcp-server/src/readers/graph.test.ts
index c210c7f8e..f97bd6069 100644
--- a/packages/mcp-server/src/readers/graph.test.ts
+++ b/packages/mcp-server/src/readers/graph.test.ts
@@ -1,7 +1,7 @@
 // SF MCP Server — knowledge graph reader tests
 // Copyright (c) 2026 Jeremy McSpadden <jeremy@fluxlabs.net>
 
-import { describe, it, before, after, beforeEach, afterEach } from 'vitest';
+import { describe, it, beforeAll, afterAll, beforeEach, afterEach } from 'vitest';
 import assert from 'node:assert/strict';
 import { mkdirSync, writeFileSync, rmSync, existsSync, readFileSync } from 'node:fs';
 import { join } from 'node:path';
@@ -148,12 +148,12 @@ missing_artifacts: []
 describe('buildGraph', () => {
   let projectDir: string;
 
-  before(() => {
+  beforeAll(() => {
     projectDir = tmpProject();
     makeProjectWithArtifacts(projectDir);
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('returns nodeCount > 0 for a project with artifacts', async () => {
     const graph = await buildGraph(projectDir);
@@ -348,13 +348,13 @@ describe('writeGraph', () => {
   let projectDir: string;
   let graph: KnowledgeGraph;
 
-  before(async () => {
+  beforeAll(async () => {
     projectDir = tmpProject();
     makeProjectWithArtifacts(projectDir);
     graph = await buildGraph(projectDir);
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('creates graph.json in .sf/graphs/ after writeGraph()', async () => {
     const sfRoot = join(projectDir, '.sf');
@@ -453,7 +453,7 @@ describe('graphStatus', () => {
 describe('graphQuery', () => {
   let projectDir: string;
 
-  before(async () => {
+  beforeAll(async () => {
     projectDir = tmpProject();
     makeProjectWithArtifacts(projectDir);
     const sfRoot = join(projectDir, '.sf');
@@ -461,7 +461,7 @@ describe('graphQuery', () => {
     await writeGraph(sfRoot, graph);
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('returns matching nodes for a known term', async () => {
     const result = await graphQuery(projectDir, 'auth');
diff --git a/packages/mcp-server/src/readers/readers.test.ts b/packages/mcp-server/src/readers/readers.test.ts
index d884af954..32d4aa7ea 100644
--- a/packages/mcp-server/src/readers/readers.test.ts
+++ b/packages/mcp-server/src/readers/readers.test.ts
@@ -1,7 +1,7 @@
 // SF MCP Server — reader tests
 // Copyright (c) 2026 Jeremy McSpadden <jeremy@fluxlabs.net>
 
-import { describe, it, before, after } from 'vitest';
+import { describe, it, beforeAll, afterAll } from 'vitest';
 import assert from 'node:assert/strict';
 import { mkdirSync, writeFileSync, rmSync } from 'node:fs';
 import { join } from 'node:path';
@@ -38,7 +38,7 @@ function writeFixture(base: string, relPath: string, content: string): void {
 describe('readProgress', () => {
   let projectDir: string;
 
-  before(() => {
+  beforeAll(() => {
     projectDir = tmpProject();
 
     writeFixture(projectDir, '.sf/STATE.md', `# SF State
@@ -76,7 +76,7 @@ Execute T02 in S01 — implement token refresh.
     mkdirSync(join(projectDir, '.sf/milestones/M003'), { recursive: true });
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('parses active milestone from STATE.md', () => {
     const result = readProgress(projectDir);
@@ -142,7 +142,7 @@ Execute T02 in S01 — implement token refresh.
 describe('readRoadmap', () => {
   let projectDir: string;
 
-  before(() => {
+  beforeAll(() => {
     projectDir = tmpProject();
 
     writeFixture(projectDir, '.sf/milestones/M001/M001-CONTEXT.md', '# M001: Core Setup\n');
@@ -183,7 +183,7 @@ Build the foundation for the project.
     writeFixture(projectDir, '.sf/milestones/M001/slices/S02/tasks/T02-PLAN.md', '# T02');
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('returns milestone structure', () => {
     const result = readRoadmap(projectDir);
@@ -233,7 +233,7 @@ Build the foundation for the project.
 describe('readHistory', () => {
   let projectDir: string;
 
-  before(() => {
+  beforeAll(() => {
     projectDir = tmpProject();
     writeFixture(projectDir, '.sf/metrics.json', JSON.stringify({
       version: 1,
@@ -265,7 +265,7 @@ describe('readHistory', () => {
     }));
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('returns all entries sorted by most recent', () => {
     const result = readHistory(projectDir);
@@ -303,7 +303,7 @@ describe('readHistory', () => {
 describe('readCaptures', () => {
   let projectDir: string;
 
-  before(() => {
+  beforeAll(() => {
     projectDir = tmpProject();
     writeFixture(projectDir, '.sf/CAPTURES.md', `# Captures
 
@@ -336,7 +336,7 @@ describe('readCaptures', () => {
 `);
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('reads all captures', () => {
     const result = readCaptures(projectDir, 'all');
@@ -379,7 +379,7 @@ describe('readCaptures', () => {
 describe('readKnowledge', () => {
   let projectDir: string;
 
-  before(() => {
+  beforeAll(() => {
     projectDir = tmpProject();
     writeFixture(projectDir, '.sf/KNOWLEDGE.md', `# Project Knowledge
 
@@ -404,7 +404,7 @@ describe('readKnowledge', () => {
 `);
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('reads all knowledge entries', () => {
     const result = readKnowledge(projectDir);
@@ -443,7 +443,7 @@ describe('readKnowledge', () => {
 describe('runDoctorLite', () => {
   let projectDir: string;
 
-  before(() => {
+  beforeAll(() => {
     projectDir = tmpProject();
 
     // M001: complete milestone (has summary)
@@ -467,7 +467,7 @@ describe('runDoctorLite', () => {
     mkdirSync(join(projectDir, '.sf/milestones/M003'), { recursive: true });
   });
 
-  after(() => rmSync(projectDir, { recursive: true, force: true }));
+  afterAll(() => rmSync(projectDir, { recursive: true, force: true }));
 
   it('detects all-slices-done-missing-summary', () => {
     const result = runDoctorLite(projectDir);
diff --git a/packages/native/src/__tests__/fd.test.mjs b/packages/native/src/__tests__/fd.test.mjs
index 80f309567..0f031a7a9 100644
--- a/packages/native/src/__tests__/fd.test.mjs
+++ b/packages/native/src/__tests__/fd.test.mjs
@@ -35,7 +35,7 @@ if (!native) {
 describe("native fd: fuzzyFind()", () => {
   test("finds files matching a query", (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-fd-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "main.rs"), "fn main() {}");
     fs.writeFileSync(path.join(tmpDir, "lib.rs"), "pub mod lib;");
@@ -53,7 +53,7 @@ describe("native fd: fuzzyFind()", () => {
 
   test("returns empty results for non-matching query", (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-fd-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "hello.txt"), "hello");
 
@@ -68,7 +68,7 @@ describe("native fd: fuzzyFind()", () => {
 
   test("respects maxResults limit", (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-fd-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     for (let i = 0; i < 10; i++) {
       fs.writeFileSync(path.join(tmpDir, `file${i}.txt`), "content");
@@ -86,7 +86,7 @@ describe("native fd: fuzzyFind()", () => {
 
   test("directories have trailing slash and bonus score", (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-fd-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.mkdirSync(path.join(tmpDir, "models"));
     fs.writeFileSync(path.join(tmpDir, "models.ts"), "export {}");
@@ -104,7 +104,7 @@ describe("native fd: fuzzyFind()", () => {
 
   test("empty query returns all entries", (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-fd-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "a.txt"), "a");
     fs.writeFileSync(path.join(tmpDir, "b.txt"), "b");
@@ -124,7 +124,7 @@ describe("native fd: fuzzyFind()", () => {
 
   test("fuzzy subsequence matching works", (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-fd-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "MyComponentFile.tsx"), "export {}");
     fs.writeFileSync(path.join(tmpDir, "other.txt"), "other");
@@ -144,7 +144,7 @@ describe("native fd: fuzzyFind()", () => {
     process.env.FS_SCAN_CACHE_TTL_MS = "10000";
 
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-fd-test-"));
-    t.after(() => {
+    t.afterAll(() => {
       native.invalidateFsScanCache(tmpDir);
       fs.rmSync(tmpDir, { recursive: true, force: true });
       if (previousTtl === undefined) {
@@ -176,7 +176,7 @@ describe("native fd: fuzzyFind()", () => {
 
   test("results are sorted by score descending", (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-fd-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "main.ts"), "");
     fs.writeFileSync(path.join(tmpDir, "my_main.ts"), "");
diff --git a/packages/native/src/__tests__/glob.test.mjs b/packages/native/src/__tests__/glob.test.mjs
index 94e847f9e..f65f6bb51 100644
--- a/packages/native/src/__tests__/glob.test.mjs
+++ b/packages/native/src/__tests__/glob.test.mjs
@@ -45,7 +45,7 @@ if (!native) {
 describe("native glob: glob()", () => {
   test("finds files matching a pattern", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "file1.ts"), "const a = 1;");
     fs.writeFileSync(path.join(tmpDir, "file2.ts"), "const b = 2;");
@@ -61,7 +61,7 @@ describe("native glob: glob()", () => {
 
   test("recursive matching into subdirectories", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.mkdirSync(path.join(tmpDir, "src"));
     fs.mkdirSync(path.join(tmpDir, "src", "nested"));
@@ -80,7 +80,7 @@ describe("native glob: glob()", () => {
 
   test("respects maxResults limit", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     for (let i = 0; i < 10; i++) {
       fs.writeFileSync(path.join(tmpDir, `file${i}.txt`), "");
@@ -98,7 +98,7 @@ describe("native glob: glob()", () => {
 
   test("filters by file type (directories only)", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.mkdirSync(path.join(tmpDir, "dir1"));
     fs.mkdirSync(path.join(tmpDir, "dir2"));
@@ -118,7 +118,7 @@ describe("native glob: glob()", () => {
 
   test("respects .gitignore", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     // Init a git repo so .gitignore is respected
     fs.mkdirSync(path.join(tmpDir, ".git"));
@@ -138,7 +138,7 @@ describe("native glob: glob()", () => {
 
   test("includes gitignored files when gitignore=false", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.mkdirSync(path.join(tmpDir, ".git"));
     fs.writeFileSync(path.join(tmpDir, ".gitignore"), "ignored.txt\n");
@@ -156,7 +156,7 @@ describe("native glob: glob()", () => {
 
   test("skips node_modules by default", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.mkdirSync(path.join(tmpDir, "node_modules"));
     fs.writeFileSync(path.join(tmpDir, "node_modules", "dep.js"), "");
@@ -174,7 +174,7 @@ describe("native glob: glob()", () => {
 
   test("sortByMtime returns most recent first", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "old.txt"), "old");
     // Ensure different mtime
@@ -210,7 +210,7 @@ describe("native glob: glob()", () => {
 
   test("returns mtime for each entry", async (t) => {
     const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-glob-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "test.txt"), "content");
 
diff --git a/packages/native/src/__tests__/grep.test.mjs b/packages/native/src/__tests__/grep.test.mjs
index c6ebb787f..68eaf6ec4 100644
--- a/packages/native/src/__tests__/grep.test.mjs
+++ b/packages/native/src/__tests__/grep.test.mjs
@@ -95,7 +95,7 @@ describe("native grep: grep()", () => {
 
   test("returns a promise", async (t) => {
     tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-grep-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "file1.txt"), "hello world\n");
 
@@ -112,7 +112,7 @@ describe("native grep: grep()", () => {
 
   test("searches files on disk", async (t) => {
     tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-grep-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "file1.txt"), "hello world\nfoo bar\n");
     fs.writeFileSync(path.join(tmpDir, "file2.txt"), "hello rust\nbaz qux\n");
@@ -134,7 +134,7 @@ describe("native grep: grep()", () => {
 
   test("respects glob filter", async (t) => {
     tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-grep-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     fs.writeFileSync(path.join(tmpDir, "code.ts"), "hello typescript\n");
     fs.writeFileSync(path.join(tmpDir, "code.js"), "hello javascript\n");
@@ -152,7 +152,7 @@ describe("native grep: grep()", () => {
 
   test("respects maxCount", async (t) => {
     tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "sf-grep-test-"));
-    t.after(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
+    t.afterAll(() => fs.rmSync(tmpDir, { recursive: true, force: true }));
 
     for (let i = 0; i < 10; i++) {
       fs.writeFileSync(path.join(tmpDir, `file${i}.txt`), "match_me\n");
diff --git a/packages/pi-ai/src/providers/anthropic-auth.test.ts b/packages/pi-ai/src/providers/anthropic-auth.test.ts
index 81627df14..4101dbc18 100644
--- a/packages/pi-ai/src/providers/anthropic-auth.test.ts
+++ b/packages/pi-ai/src/providers/anthropic-auth.test.ts
@@ -38,7 +38,7 @@ const stubModel = { baseUrl: "https://api.anthropic.com" } as Parameters<typeof
 
 test("resolveAnthropicBaseUrl returns model.baseUrl when ANTHROPIC_BASE_URL is unset (#4140)", (t) => {
 	const saved = process.env.ANTHROPIC_BASE_URL;
-	t.after(() => {
+	t.afterAll(() => {
 		if (saved === undefined) delete process.env.ANTHROPIC_BASE_URL;
 		else process.env.ANTHROPIC_BASE_URL = saved;
 	});
@@ -49,7 +49,7 @@ test("resolveAnthropicBaseUrl returns model.baseUrl when ANTHROPIC_BASE_URL is u
 
 test("resolveAnthropicBaseUrl prefers ANTHROPIC_BASE_URL over model.baseUrl (#4140)", (t) => {
 	const saved = process.env.ANTHROPIC_BASE_URL;
-	t.after(() => {
+	t.afterAll(() => {
 		if (saved === undefined) delete process.env.ANTHROPIC_BASE_URL;
 		else process.env.ANTHROPIC_BASE_URL = saved;
 	});
@@ -60,7 +60,7 @@ test("resolveAnthropicBaseUrl prefers ANTHROPIC_BASE_URL over model.baseUrl (#41
 
 test("resolveAnthropicBaseUrl ignores whitespace-only ANTHROPIC_BASE_URL (#4140)", (t) => {
 	const saved = process.env.ANTHROPIC_BASE_URL;
-	t.after(() => {
+	t.afterAll(() => {
 		if (saved === undefined) delete process.env.ANTHROPIC_BASE_URL;
 		else process.env.ANTHROPIC_BASE_URL = saved;
 	});
diff --git a/packages/pi-coding-agent/src/core/auth-storage.test.ts b/packages/pi-coding-agent/src/core/auth-storage.test.ts
index b44bac70c..93bdd2fc6 100644
--- a/packages/pi-coding-agent/src/core/auth-storage.test.ts
+++ b/packages/pi-coding-agent/src/core/auth-storage.test.ts
@@ -282,7 +282,7 @@ describe("AuthStorage — oauth credential for non-OAuth provider (#2083)", () =
 		// fall-through to env / fallback finds nothing and returns undefined.
 		const origEnv = process.env.OPENROUTER_API_KEY;
 		delete process.env.OPENROUTER_API_KEY;
-		t.after(() => {
+		t.afterAll(() => {
 			if (origEnv === undefined) {
 				delete process.env.OPENROUTER_API_KEY;
 			} else {
@@ -312,7 +312,7 @@ describe("AuthStorage — oauth credential for non-OAuth provider (#2083)", () =
 
 		// Simulate OPENROUTER_API_KEY being set via env
 		const origEnv = process.env.OPENROUTER_API_KEY;
-		t.after(() => {
+		t.afterAll(() => {
 			if (origEnv === undefined) {
 				delete process.env.OPENROUTER_API_KEY;
 			} else {
@@ -339,7 +339,7 @@ describe("AuthStorage — oauth credential for non-OAuth provider (#2083)", () =
 		// and the fallback resolver is reached.
 		const origEnv = process.env.OPENROUTER_API_KEY;
 		delete process.env.OPENROUTER_API_KEY;
-		t.after(() => {
+		t.afterAll(() => {
 			if (origEnv === undefined) {
 				delete process.env.OPENROUTER_API_KEY;
 			} else {
diff --git a/packages/pi-coding-agent/src/core/extensions/runner.test.ts b/packages/pi-coding-agent/src/core/extensions/runner.test.ts
index 9f2d225aa..cfd46a5a5 100644
--- a/packages/pi-coding-agent/src/core/extensions/runner.test.ts
+++ b/packages/pi-coding-agent/src/core/extensions/runner.test.ts
@@ -50,7 +50,7 @@ function makeThrowingExtension(eventType: string, error: Error): Extension {
 describe("ExtensionRunner.emitToolCall", () => {
 	it("catches throwing extension handler and routes to emitError", async (t) => {
 		const dir = mkdtempSync(join(tmpdir(), "runner-test-"));
-		t.after(() => {
+		t.afterAll(() => {
 			rmSync(dir, { recursive: true, force: true });
 		});
 
diff --git a/packages/pi-coding-agent/src/core/lifecycle-hooks.test.ts b/packages/pi-coding-agent/src/core/lifecycle-hooks.test.ts
index b7ed478bd..19f0bfd34 100644
--- a/packages/pi-coding-agent/src/core/lifecycle-hooks.test.ts
+++ b/packages/pi-coding-agent/src/core/lifecycle-hooks.test.ts
@@ -12,7 +12,7 @@ import {
 
 function tmpDir(prefix: string, t: { after: (fn: () => void) => void }): string {
 	const dir = mkdtempSync(join(tmpdir(), `pi-lh-${prefix}-`));
-	t.after(() => rmSync(dir, { recursive: true, force: true }));
+	t.afterAll(() => rmSync(dir, { recursive: true, force: true }));
 	return dir;
 }
 
diff --git a/packages/pi-coding-agent/src/core/package-commands.test.ts b/packages/pi-coding-agent/src/core/package-commands.test.ts
index 4355c149a..37dba4ce1 100644
--- a/packages/pi-coding-agent/src/core/package-commands.test.ts
+++ b/packages/pi-coding-agent/src/core/package-commands.test.ts
@@ -27,7 +27,7 @@ function writePackage(root: string, files: Record<string, string>): void {
 
 function createTestDirs(prefix: string, t: { after: (fn: () => void) => void }) {
 	const root = mkdtempSync(join(tmpdir(), `pi-lifecycle-${prefix}-`));
-	t.after(() => rmSync(root, { recursive: true, force: true }));
+	t.afterAll(() => rmSync(root, { recursive: true, force: true }));
 	const cwd = join(root, "cwd");
 	const agentDir = join(root, "agent");
 	const extensionDir = join(root, `ext-${prefix}`);
diff --git a/packages/pi-coding-agent/src/core/resolve-config-value.test.ts b/packages/pi-coding-agent/src/core/resolve-config-value.test.ts
index 81472a726..7bf47d5b7 100644
--- a/packages/pi-coding-agent/src/core/resolve-config-value.test.ts
+++ b/packages/pi-coding-agent/src/core/resolve-config-value.test.ts
@@ -47,7 +47,7 @@ describe("resolveConfigValue — command allowlist enforcement", () => {
 			stderrChunks.push(chunk.toString());
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
@@ -77,7 +77,7 @@ describe("resolveConfigValue — command allowlist enforcement", () => {
 			stderrChunks.push(chunk.toString());
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
@@ -137,7 +137,7 @@ describe("resolveConfigValue — shell operator bypass prevention", () => {
 			stderrChunks.push(chunk.toString());
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
@@ -154,7 +154,7 @@ describe("resolveConfigValue — caching", () => {
 			callCount.n++;
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
@@ -172,7 +172,7 @@ describe("resolveConfigValue — caching", () => {
 			stderrChunks.push(chunk.toString());
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
@@ -199,7 +199,7 @@ describe("REGRESSION #666: non-default credential tool blocked with no override"
 			stderrChunks.push(chunk.toString());
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
@@ -243,7 +243,7 @@ describe("setAllowedCommandPrefixes — user override", () => {
 			stderrChunks.push(chunk.toString());
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
@@ -260,7 +260,7 @@ describe("setAllowedCommandPrefixes — user override", () => {
 			stderrChunks.push(chunk.toString());
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
@@ -278,7 +278,7 @@ describe("setAllowedCommandPrefixes — user override", () => {
 			stderrChunks.push(chunk.toString());
 			return true;
 		};
-		t.after(() => {
+		t.afterAll(() => {
 			process.stderr.write = originalWrite;
 		});
 
diff --git a/packages/pi-coding-agent/src/core/tools/edit-diff.test.ts b/packages/pi-coding-agent/src/core/tools/edit-diff.test.ts
index 7bb42f925..410947867 100644
--- a/packages/pi-coding-agent/src/core/tools/edit-diff.test.ts
+++ b/packages/pi-coding-agent/src/core/tools/edit-diff.test.ts
@@ -62,7 +62,7 @@ describe("edit-diff", () => {
 
 	it("computes diffs for preview without native helpers", async (t) => {
 		const dir = mkdtempSync(join(tmpdir(), "edit-diff-test-"));
-		t.after(() => {
+		t.afterAll(() => {
 			rmSync(dir, { recursive: true, force: true });
 		});
 
diff --git a/packages/pi-coding-agent/src/tests/system-prompt-skill-filter.test.ts b/packages/pi-coding-agent/src/tests/system-prompt-skill-filter.test.ts
index cdce77d5e..1a5207795 100644
--- a/packages/pi-coding-agent/src/tests/system-prompt-skill-filter.test.ts
+++ b/packages/pi-coding-agent/src/tests/system-prompt-skill-filter.test.ts
@@ -136,7 +136,7 @@ test("buildSystemPrompt: skillFilter that throws falls back to unfiltered list a
 	const originalWarn = console.warn;
 	const warnings: string[] = [];
 	console.warn = (...args: unknown[]) => { warnings.push(args.join(" ")); };
-	t.after(() => { console.warn = originalWarn; });
+	t.afterAll(() => { console.warn = originalWarn; });
 
 	let prompt = "";
 	assert.doesNotThrow(() => {
diff --git a/src/resources/extensions/browser-tools/tests/browser-tools-integration.test.mjs b/src/resources/extensions/browser-tools/tests/browser-tools-integration.test.mjs
index d7df51984..fba53a2b2 100644
--- a/src/resources/extensions/browser-tools/tests/browser-tools-integration.test.mjs
+++ b/src/resources/extensions/browser-tools/tests/browser-tools-integration.test.mjs
@@ -110,7 +110,7 @@ const buildFormAnalysisScript = extractBuildFormAnalysisScript();
 let browser;
 let page;
 
-before(async () => {
+beforeAll(async () => {
 	browser = await chromium.launch({ headless: true });
 	const context = await browser.newContext({
 		viewport: { width: 1280, height: 800 },
@@ -119,7 +119,7 @@ before(async () => {
 	page = await context.newPage();
 });
 
-after(async () => {
+afterAll(async () => {
 	if (browser) await browser.close();
 });
 
diff --git a/src/resources/extensions/sf/tests/claude-import-tui.test.ts b/src/resources/extensions/sf/tests/claude-import-tui.test.ts
index 9f261dfb3..c51fa1cf3 100644
--- a/src/resources/extensions/sf/tests/claude-import-tui.test.ts
+++ b/src/resources/extensions/sf/tests/claude-import-tui.test.ts
@@ -19,7 +19,7 @@ import {
 } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { after, before, describe, it, vi, afterEach } from 'vitest';
+import { afterAll, beforeAll, describe, it, vi, afterEach } from 'vitest';
 import type { ExtensionCommandContext } from "@singularity-forge/pi-coding-agent";
 import {
 	discoverClaudePlugins,
@@ -137,13 +137,13 @@ describe("TUI Command Flow Tests", { skip: skipReason }, () => {
 	let _prefsPath: string;
 	let prefs: Record<string, unknown>;
 
-	before(() => {
+	beforeAll(() => {
 		tempDir = mkdtempSync(join(tmpdir(), "sf-tui-test-"));
 		_prefsPath = join(tempDir, "PREFERENCES.md");
 		prefs = { version: 1 };
 	});
 
-	after(() => {
+	afterAll(() => {
 		fixtures?.cleanup();
 		if (existsSync(tempDir)) {
 			rmSync(tempDir, { recursive: true, force: true });
diff --git a/src/resources/extensions/sf/tests/commands-workflow-custom.test.ts b/src/resources/extensions/sf/tests/commands-workflow-custom.test.ts
index 82fcd81a8..c04f8d039 100644
--- a/src/resources/extensions/sf/tests/commands-workflow-custom.test.ts
+++ b/src/resources/extensions/sf/tests/commands-workflow-custom.test.ts
@@ -66,7 +66,7 @@ afterEach(() => {
 	tmpDirs.length = 0;
 });
 
-before(() => {
+beforeAll(() => {
 	savedCwd = process.cwd();
 });
 
diff --git a/src/resources/extensions/sf/tests/dev-engine-wrapper.test.ts b/src/resources/extensions/sf/tests/dev-engine-wrapper.test.ts
index 2ed0fb3be..fd18be7fd 100644
--- a/src/resources/extensions/sf/tests/dev-engine-wrapper.test.ts
+++ b/src/resources/extensions/sf/tests/dev-engine-wrapper.test.ts
@@ -247,7 +247,7 @@ describe("Resolver routing", () => {
 describe("Kill switch (SF_ENGINE_BYPASS)", () => {
 	const originalBypass = process.env.SF_ENGINE_BYPASS;
 
-	after(() => {
+	afterAll(() => {
 		// Restore original env var state
 		if (originalBypass === undefined) {
 			delete process.env.SF_ENGINE_BYPASS;
diff --git a/src/resources/extensions/sf/tests/integration/doctor.test.ts b/src/resources/extensions/sf/tests/integration/doctor.test.ts
index 03aff7d8b..9766bc9ce 100644
--- a/src/resources/extensions/sf/tests/integration/doctor.test.ts
+++ b/src/resources/extensions/sf/tests/integration/doctor.test.ts
@@ -138,7 +138,7 @@ describe("doctor", async () => {
 		);
 	});
 
-	after(() => rmSync(tmpBase, { recursive: true, force: true }));
+	afterAll(() => rmSync(tmpBase, { recursive: true, force: true }));
 
 	// ─── Milestone summary detection: missing summary ──────────────────────
 	test("doctor detects missing milestone summary", async () => {
diff --git a/src/resources/extensions/sf/tests/integration/plugin-importer-live.test.ts b/src/resources/extensions/sf/tests/integration/plugin-importer-live.test.ts
index abcb8714d..ecddd4bbe 100644
--- a/src/resources/extensions/sf/tests/integration/plugin-importer-live.test.ts
+++ b/src/resources/extensions/sf/tests/integration/plugin-importer-live.test.ts
@@ -61,11 +61,11 @@ describe("Live E2E Tests", { skip: skipReason }, () => {
 	let importer: PluginImporter;
 	let discoveryResult: DiscoveryResult;
 
-	before(() => {
+	beforeAll(() => {
 		importer = new PluginImporter();
 	});
 
-	after(() => {
+	afterAll(() => {
 		fixtures?.cleanup();
 	});
 
@@ -471,7 +471,7 @@ describe("Live E2E Tests", { skip: skipReason }, () => {
 		it("should execute discover → select → validate → manifest without error", () => {
 			// This test verifies the full pipeline works end-to-end
 
-			// Already have discovery from before()
+			// Already have discovery from beforeAll()
 			assert.ok(discoveryResult, "Discovery should have completed");
 
 			// Select subset
diff --git a/src/resources/extensions/sf/tests/migrate-external-worktree.test.ts b/src/resources/extensions/sf/tests/migrate-external-worktree.test.ts
index 7266fb6a7..8abac747e 100644
--- a/src/resources/extensions/sf/tests/migrate-external-worktree.test.ts
+++ b/src/resources/extensions/sf/tests/migrate-external-worktree.test.ts
@@ -27,7 +27,7 @@ describe("migrate-external worktree guard (#2970)", () => {
 	let stateDir: string;
 	let worktreePath: string;
 
-	before(() => {
+	beforeAll(() => {
 		base = realpathSync(mkdtempSync(join(tmpdir(), "sf-migrate-wt-")));
 		stateDir = realpathSync(mkdtempSync(join(tmpdir(), "sf-state-")));
 		process.env.SF_STATE_DIR = stateDir;
@@ -51,7 +51,7 @@ describe("migrate-external worktree guard (#2970)", () => {
 		writeFileSync(join(worktreeSf, "PREFERENCES.md"), "# prefs\n", "utf-8");
 	});
 
-	after(() => {
+	afterAll(() => {
 		delete process.env.SF_STATE_DIR;
 		// Remove worktree before cleaning up
 		try {
diff --git a/src/resources/extensions/sf/tests/parallel-worker-monitoring.test.ts b/src/resources/extensions/sf/tests/parallel-worker-monitoring.test.ts
index 3451b09fc..4dcd3bc5e 100644
--- a/src/resources/extensions/sf/tests/parallel-worker-monitoring.test.ts
+++ b/src/resources/extensions/sf/tests/parallel-worker-monitoring.test.ts
@@ -47,7 +47,7 @@ function makeMessageEndLine(cost: number, role = "assistant"): string {
 // ─── Tests ────────────────────────────────────────────────────────────────
 
 describe("parallel-worker-monitoring", () => {
-	after(() => {
+	afterAll(() => {
 		resetOrchestrator();
 	});
 
diff --git a/src/resources/extensions/sf/tests/project-relocation-recovery.test.ts b/src/resources/extensions/sf/tests/project-relocation-recovery.test.ts
index 8ef46f135..05a575fe6 100644
--- a/src/resources/extensions/sf/tests/project-relocation-recovery.test.ts
+++ b/src/resources/extensions/sf/tests/project-relocation-recovery.test.ts
@@ -64,13 +64,13 @@ describe("project-relocation-recovery (#2750)", () => {
 	let stateDir: string;
 	let savedStateDir: string | undefined;
 
-	before(() => {
+	beforeAll(() => {
 		savedStateDir = process.env.SF_STATE_DIR;
 		stateDir = realpathSync(mkdtempSync(join(tmpdir(), "sf-reloc-state-")));
 		process.env.SF_STATE_DIR = stateDir;
 	});
 
-	after(() => {
+	afterAll(() => {
 		if (savedStateDir !== undefined) {
 			process.env.SF_STATE_DIR = savedStateDir;
 		} else {
diff --git a/src/resources/extensions/sf/tests/repo-identity-worktree.test.ts b/src/resources/extensions/sf/tests/repo-identity-worktree.test.ts
index dfafe77c5..a5a8e9eb1 100644
--- a/src/resources/extensions/sf/tests/repo-identity-worktree.test.ts
+++ b/src/resources/extensions/sf/tests/repo-identity-worktree.test.ts
@@ -50,7 +50,7 @@ describe("repo-identity-worktree", () => {
 	let worktreePath: string;
 	let expectedExternalState: string;
 
-	before(() => {
+	beforeAll(() => {
 		base = realpathSync(mkdtempSync(join(tmpdir(), "sf-repo-identity-")));
 		stateDir = realpathSync(mkdtempSync(join(tmpdir(), "sf-state-")));
 		process.env.SF_STATE_DIR = stateDir;
@@ -69,7 +69,7 @@ describe("repo-identity-worktree", () => {
 		expectedExternalState = externalSfRoot(base);
 	});
 
-	after(() => {
+	afterAll(() => {
 		delete process.env.SF_PROJECT_ID;
 		delete process.env.SF_STATE_DIR;
 		rmSync(base, { recursive: true, force: true });
diff --git a/src/resources/extensions/sf/tests/requirements.test.ts b/src/resources/extensions/sf/tests/requirements.test.ts
index 9b59b11a0..028ae25e0 100644
--- a/src/resources/extensions/sf/tests/requirements.test.ts
+++ b/src/resources/extensions/sf/tests/requirements.test.ts
@@ -131,7 +131,7 @@ describe("requirements", () => {
 		);
 	});
 
-	after(() => {
+	afterAll(() => {
 		rmSync(base, { recursive: true, force: true });
 	});
 });
diff --git a/src/resources/extensions/sf/tests/runtime-root-redirect.test.ts b/src/resources/extensions/sf/tests/runtime-root-redirect.test.ts
index 4c50eb759..348b39980 100644
--- a/src/resources/extensions/sf/tests/runtime-root-redirect.test.ts
+++ b/src/resources/extensions/sf/tests/runtime-root-redirect.test.ts
@@ -58,7 +58,7 @@ afterEach(() => {
 	_resetSelfDetectionCache();
 });
 
-before(() => {
+beforeAll(() => {
 	// Ensure cleanup even if tests are aborted
 	process.on("exit", () => {
 		for (const d of tmpDirs) {
diff --git a/src/resources/extensions/sf/tests/stash-pop-sf-conflict.test.ts b/src/resources/extensions/sf/tests/stash-pop-sf-conflict.test.ts
index f7e6bf20c..b566997ff 100644
--- a/src/resources/extensions/sf/tests/stash-pop-sf-conflict.test.ts
+++ b/src/resources/extensions/sf/tests/stash-pop-sf-conflict.test.ts
@@ -29,7 +29,7 @@ import { _resetServiceCache } from "../worktree.ts";
 let originalHome: string | undefined;
 let fakeHome: string;
 
-test.before(() => {
+test.beforeAll(() => {
 	originalHome = process.env.HOME;
 	fakeHome = realpathSync(mkdtempSync(join(tmpdir(), "sf-fake-home-")));
 	process.env.HOME = fakeHome;
@@ -37,7 +37,7 @@ test.before(() => {
 	_resetServiceCache();
 });
 
-test.after(() => {
+test.afterAll(() => {
 	process.env.HOME = originalHome;
 	_clearSfRootCache();
 	_resetServiceCache();
diff --git a/src/resources/extensions/sf/tests/stash-queued-context-files.test.ts b/src/resources/extensions/sf/tests/stash-queued-context-files.test.ts
index 746816274..d2a7cb163 100644
--- a/src/resources/extensions/sf/tests/stash-queued-context-files.test.ts
+++ b/src/resources/extensions/sf/tests/stash-queued-context-files.test.ts
@@ -34,7 +34,7 @@ import { _resetServiceCache } from "../worktree.ts";
 let originalHome: string | undefined;
 let fakeHome: string;
 
-test.before(() => {
+test.beforeAll(() => {
 	originalHome = process.env.HOME;
 	fakeHome = realpathSync(mkdtempSync(join(tmpdir(), "sf-fake-home-")));
 	process.env.HOME = fakeHome;
@@ -42,7 +42,7 @@ test.before(() => {
 	_resetServiceCache();
 });
 
-test.after(() => {
+test.afterAll(() => {
 	process.env.HOME = originalHome;
 	_clearSfRootCache();
 	_resetServiceCache();
diff --git a/src/resources/extensions/sf/tests/worktree-bugfix.test.ts b/src/resources/extensions/sf/tests/worktree-bugfix.test.ts
index 5f80acb45..40deea844 100644
--- a/src/resources/extensions/sf/tests/worktree-bugfix.test.ts
+++ b/src/resources/extensions/sf/tests/worktree-bugfix.test.ts
@@ -38,7 +38,7 @@ function initRepo(dir: string): void {
 
 describe("worktree-bugfix", () => {
 	const dirs: string[] = [];
-	after(() => {
+	afterAll(() => {
 		for (const d of dirs) rmSync(d, { recursive: true, force: true });
 	});
 
diff --git a/src/resources/extensions/sf/tests/worktree-teardown-safety.test.ts b/src/resources/extensions/sf/tests/worktree-teardown-safety.test.ts
index c99114cc1..211040022 100644
--- a/src/resources/extensions/sf/tests/worktree-teardown-safety.test.ts
+++ b/src/resources/extensions/sf/tests/worktree-teardown-safety.test.ts
@@ -63,7 +63,7 @@ function createTempRepo(): string {
 describe("worktree-teardown-safety", () => {
 	const dirs: string[] = [];
 
-	after(() => {
+	afterAll(() => {
 		for (const d of dirs) rmSync(d, { recursive: true, force: true });
 		report();
 	});
diff --git a/src/tests/integration/web-project-discovery-contract.test.ts b/src/tests/integration/web-project-discovery-contract.test.ts
index 50cadbf03..62d1ade50 100644
--- a/src/tests/integration/web-project-discovery-contract.test.ts
+++ b/src/tests/integration/web-project-discovery-contract.test.ts
@@ -102,7 +102,7 @@ mkdirSync(join(plainProject, "src"));
 // Teardown
 // ---------------------------------------------------------------------------
 
-after(() => {
+afterAll(() => {
 	rmSync(tempRoot, { recursive: true, force: true });
 	rmSync(monorepoPnpm, { recursive: true, force: true });
 	rmSync(monorepoLerna, { recursive: true, force: true });
diff --git a/src/tests/integration/web-switch-project.test.ts b/src/tests/integration/web-switch-project.test.ts
index 95536531c..7325121ec 100644
--- a/src/tests/integration/web-switch-project.test.ts
+++ b/src/tests/integration/web-switch-project.test.ts
@@ -117,7 +117,7 @@ const prefsDir = join(tempRoot, "prefs");
 mkdirSync(prefsDir);
 const prefsPath = join(prefsDir, "web-preferences.json");
 
-after(() => {
+afterAll(() => {
 	rmSync(tempRoot, { recursive: true, force: true });
 });