diff --git a/.changeset/fix-lint-warnings.md b/.changeset/fix-lint-warnings.md
new file mode 100644
index 00000000..a845151c
--- /dev/null
+++ b/.changeset/fix-lint-warnings.md
@@ -0,0 +1,2 @@
+---
+---
diff --git a/packages/bundler/src/utils/clean.test.ts b/packages/bundler/src/utils/clean.test.ts
index 01d9f65f..34cb4ced 100644
--- a/packages/bundler/src/utils/clean.test.ts
+++ b/packages/bundler/src/utils/clean.test.ts
@@ -38,7 +38,7 @@ function makeResolved(
   }
 }
 
-describe('clean', () => {
+describe(clean, () => {
   beforeEach(() => {
     mkdirSync(testDir, { recursive: true })
   })
@@ -65,8 +65,8 @@ describe('clean', () => {
 
     expect(result.removed).toContain('index.js')
     expect(result.removed).toContain('index.js.map')
-    expect(existsSync(join(testDir, 'index.js'))).toBe(false)
-    expect(existsSync(join(testDir, 'index.js.map'))).toBe(false)
+    expect(existsSync(join(testDir, 'index.js'))).toBeFalsy()
+    expect(existsSync(join(testDir, 'index.js.map'))).toBeFalsy()
   })
 
   it('should preserve foreign files and report them', async () => {
@@ -77,7 +77,7 @@ describe('clean', () => {
 
     expect(result.removed).toContain('index.js')
     expect(result.foreign).toContain('README.md')
-    expect(existsSync(join(testDir, 'README.md'))).toBe(true)
+    expect(existsSync(join(testDir, 'README.md'))).toBeTruthy()
   })
 
   it('should not remove extensionless files when compile is false', async () => {
@@ -86,7 +86,7 @@ describe('clean', () => {
     const result = await clean({ resolved: makeResolved(), compile: false })
 
     expect(result.foreign).toContain('cli-darwin-arm64')
-    expect(existsSync(join(testDir, 'cli-darwin-arm64'))).toBe(true)
+    expect(existsSync(join(testDir, 'cli-darwin-arm64'))).toBeTruthy()
   })
 
   it('should remove exact binary names when compile is true', async () => {
@@ -107,9 +107,9 @@ describe('clean', () => {
     expect(result.removed).toContain('my-app-darwin-arm64')
     expect(result.removed).toContain('my-app-linux-x64')
     expect(result.foreign).toContain('README.md')
-    expect(existsSync(join(testDir, 'my-app-darwin-arm64'))).toBe(false)
-    expect(existsSync(join(testDir, 'my-app-linux-x64'))).toBe(false)
-    expect(existsSync(join(testDir, 'README.md'))).toBe(true)
+    expect(existsSync(join(testDir, 'my-app-darwin-arm64'))).toBeFalsy()
+    expect(existsSync(join(testDir, 'my-app-linux-x64'))).toBeFalsy()
+    expect(existsSync(join(testDir, 'README.md'))).toBeTruthy()
   })
 
   it('should remove windows .exe binary names in multi-target builds', async () => {
diff --git a/packages/cli/src/lib/config-helpers.test.ts b/packages/cli/src/lib/config-helpers.test.ts
index e9786795..0d61df10 100644
--- a/packages/cli/src/lib/config-helpers.test.ts
+++ b/packages/cli/src/lib/config-helpers.test.ts
@@ -2,7 +2,7 @@ import { describe, expect, it } from 'vitest'
 
 import { extractConfig } from './config-helpers.js'
 
-describe('extractConfig', () => {
+describe(extractConfig, () => {
   it('should return the config from a non-null result', () => {
     const result = { config: { entry: './src/main.ts' }, configFile: '/project/kidd.config.ts' }
 
diff --git a/packages/cli/tsdown.config.ts b/packages/cli/tsdown.config.ts
index 507dff8d..3a7519c2 100644
--- a/packages/cli/tsdown.config.ts
+++ b/packages/cli/tsdown.config.ts
@@ -4,7 +4,7 @@ export default defineConfig({
   clean: true,
   deps: {
     // Bundle @kidd-cli/* packages so the published CLI is self-contained and
-    // does not depend on workspace packages being published with correct exports.
+    // Does not depend on workspace packages being published with correct exports.
     alwaysBundle: [/^@kidd-cli\//],
     // Keep packages with native bindings external — they cannot be inlined.
     neverBundle: ['tsdown', /^@rolldown\//, /^rolldown/],
diff --git a/packages/core/src/context/resolve-defaults.test.ts b/packages/core/src/context/resolve-defaults.test.ts
index b3589006..31679457 100644
--- a/packages/core/src/context/resolve-defaults.test.ts
+++ b/packages/core/src/context/resolve-defaults.test.ts
@@ -58,9 +58,10 @@ describe('mergeClackOpts()', () => {
   })
 })
 
+// eslint-disable-next-line vitest/prefer-describe-function-title -- constant, not a function
 describe('EMPTY_CLACK_BASE', () => {
   it('should be a frozen empty object', () => {
-    expect(Object.isFrozen(EMPTY_CLACK_BASE)).toBe(true)
+    expect(Object.isFrozen(EMPTY_CLACK_BASE)).toBeTruthy()
     expect(Object.keys(EMPTY_CLACK_BASE)).toEqual([])
   })
 })
diff --git a/packages/core/src/context/status.test.ts b/packages/core/src/context/status.test.ts
index 1bfec746..0a0c03d3 100644
--- a/packages/core/src/context/status.test.ts
+++ b/packages/core/src/context/status.test.ts
@@ -57,7 +57,7 @@ beforeEach(() => {
 describe('createContextStatus()', () => {
   it('should return a frozen object', () => {
     const status = createContextStatus()
-    expect(Object.isFrozen(status)).toBe(true)
+    expect(Object.isFrozen(status)).toBeTruthy()
   })
 
   it('should have spinner, progress, tasks, and taskLog', () => {
@@ -200,8 +200,8 @@ describe('createContextStatus()', () => {
     it('should convert readonly frames to a mutable array', () => {
       const frames = ['a', 'b', 'c'] as const
       createContextStatus({ spinnerConfig: { frames } })
-      const call = (clack.spinner as Mock).mock.calls[0][0]
-      expect(Array.isArray(call.frames)).toBe(true)
+      const [[call]] = (clack.spinner as Mock).mock.calls
+      expect(Array.isArray(call.frames)).toBeTruthy()
       expect(call.frames).toEqual(['a', 'b', 'c'])
     })
 
diff --git a/packages/core/src/context/status.ts b/packages/core/src/context/status.ts
index a01e35f7..dd269056 100644
--- a/packages/core/src/context/status.ts
+++ b/packages/core/src/context/status.ts
@@ -89,7 +89,7 @@ export function createContextStatus(options?: CreateContextStatusOptions): Statu
 
     async tasks(tasks: readonly TaskDef[]): Promise<void> {
       // Accepted exception: kidd's TaskDef.task returns `Promise<string | void>`,
-      // clack expects separate `Promise<string> | Promise<void>`. The cast bridges this.
+      // Clack expects separate `Promise<string> | Promise<void>`. The cast bridges this.
       await clack.tasks(
         tasks.map((t) => ({
           title: t.title,
diff --git a/packages/core/src/lib/log.test.ts b/packages/core/src/lib/log.test.ts
index 5ad0eaef..48fd95f3 100644
--- a/packages/core/src/lib/log.test.ts
+++ b/packages/core/src/lib/log.test.ts
@@ -157,7 +157,7 @@ describe('createLog()', () => {
   describe('stream', () => {
     it('should call clack.stream.info with iterable', async () => {
       const log = createLog()
-      const iterable = (async function* () {
+      const iterable = (async function* streamChunks() {
         yield 'chunk'
       })()
 
@@ -227,7 +227,7 @@ describe('createLog()', () => {
     it('should return a frozen object', () => {
       const log = createLog()
 
-      expect(Object.isFrozen(log)).toBe(true)
+      expect(Object.isFrozen(log)).toBeTruthy()
     })
   })
 })
diff --git a/packages/core/src/middleware/config/config.ts b/packages/core/src/middleware/config/config.ts
index 7ea9a704..513b5f24 100644
--- a/packages/core/src/middleware/config/config.ts
+++ b/packages/core/src/middleware/config/config.ts
@@ -338,7 +338,9 @@ function validateConfig(
   schema: ZodTypeAny,
   context?: string
 ): Result<ConfigLoadCallResult<unknown>> {
-  const prefix = context ? `Invalid ${context} config` : 'Invalid config'
+  const prefix = match(context)
+    .with(P.string, (ctx) => `Invalid ${ctx} config`)
+    .otherwise(() => 'Invalid config')
   const [validationError, validated] = validate({
     createError: ({ message }) => new Error(`${prefix}:\n${message}`),
     params: data,
diff --git a/packages/core/src/screen/output/screen-log.test.ts b/packages/core/src/screen/output/screen-log.test.ts
index c9230152..0c1bdb6c 100644
--- a/packages/core/src/screen/output/screen-log.test.ts
+++ b/packages/core/src/screen/output/screen-log.test.ts
@@ -3,14 +3,14 @@ import { describe, expect, it } from 'vitest'
 import { createScreenLog } from './screen-log.js'
 import { createOutputStore } from './store.js'
 
-describe('createScreenLog', () => {
+describe(createScreenLog, () => {
   it('should push an info log entry', () => {
     const store = createOutputStore()
     const log = createScreenLog(store)
 
     log.info('hello')
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'log', level: 'info', text: 'hello' })
   })
@@ -21,7 +21,7 @@ describe('createScreenLog', () => {
 
     log.success('done')
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'log', level: 'success', text: 'done' })
   })
@@ -32,7 +32,7 @@ describe('createScreenLog', () => {
 
     log.error('fail')
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'log', level: 'error', text: 'fail' })
   })
@@ -43,7 +43,7 @@ describe('createScreenLog', () => {
 
     log.warn('careful')
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'log', level: 'warn', text: 'careful' })
   })
@@ -54,7 +54,7 @@ describe('createScreenLog', () => {
 
     log.step('installing')
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'log', level: 'step', text: 'installing' })
   })
@@ -65,7 +65,7 @@ describe('createScreenLog', () => {
 
     log.message('note', { symbol: '>' })
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({
       kind: 'log',
@@ -81,7 +81,7 @@ describe('createScreenLog', () => {
 
     log.message('bare')
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'log', level: 'message', text: 'bare' })
     expect(entries[0]).toHaveProperty('symbol', undefined)
@@ -93,7 +93,7 @@ describe('createScreenLog', () => {
 
     log.newline()
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'newline' })
   })
@@ -104,7 +104,7 @@ describe('createScreenLog', () => {
 
     log.raw('raw text')
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'raw', text: 'raw text' })
   })
diff --git a/packages/core/src/screen/output/screen-report.test.ts b/packages/core/src/screen/output/screen-report.test.ts
index 851dbdbc..94a01361 100644
--- a/packages/core/src/screen/output/screen-report.test.ts
+++ b/packages/core/src/screen/output/screen-report.test.ts
@@ -3,7 +3,7 @@ import { describe, expect, it } from 'vitest'
 import { createScreenReport } from './screen-report.js'
 import { createOutputStore } from './store.js'
 
-describe('createScreenReport', () => {
+describe(createScreenReport, () => {
   it('should push a check entry to the store', () => {
     const store = createOutputStore()
     const report = createScreenReport(store)
@@ -11,7 +11,7 @@ describe('createScreenReport', () => {
 
     report.check(input)
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'check', input })
   })
@@ -27,7 +27,7 @@ describe('createScreenReport', () => {
 
     report.finding(input)
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'finding', input })
   })
@@ -45,7 +45,7 @@ describe('createScreenReport', () => {
 
     report.summary(input)
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'summary', input })
   })
@@ -60,7 +60,7 @@ describe('createScreenReport', () => {
 
     report.summary(input)
 
-    const entries = store.getSnapshot().entries
+    const { entries } = store.getSnapshot()
     expect(entries).toHaveLength(1)
     expect(entries[0]).toMatchObject({ kind: 'summary', input })
   })
diff --git a/packages/core/src/screen/output/screen-spinner.test.ts b/packages/core/src/screen/output/screen-spinner.test.ts
index 2199a972..7f048323 100644
--- a/packages/core/src/screen/output/screen-spinner.test.ts
+++ b/packages/core/src/screen/output/screen-spinner.test.ts
@@ -79,15 +79,15 @@ describe('createScreenSpinner()', () => {
     const store = createOutputStore()
     const spinner = createScreenSpinner(store)
 
-    expect(spinner.isCancelled).toBe(false)
+    expect(spinner.isCancelled).toBeFalsy()
 
     spinner.start()
-    expect(spinner.isCancelled).toBe(false)
+    expect(spinner.isCancelled).toBeFalsy()
 
     spinner.cancel()
-    expect(spinner.isCancelled).toBe(true)
+    expect(spinner.isCancelled).toBeTruthy()
 
     spinner.clear()
-    expect(spinner.isCancelled).toBe(false)
+    expect(spinner.isCancelled).toBeFalsy()
   })
 })
diff --git a/packages/core/src/screen/output/store.test.ts b/packages/core/src/screen/output/store.test.ts
index 409546b7..a2beb634 100644
--- a/packages/core/src/screen/output/store.test.ts
+++ b/packages/core/src/screen/output/store.test.ts
@@ -78,7 +78,7 @@ describe('createOutputStore()', () => {
 
     const snapshot = store.getSnapshot()
 
-    expect(Object.isFrozen(snapshot)).toBe(true)
-    expect(Object.isFrozen(snapshot.entries)).toBe(true)
+    expect(Object.isFrozen(snapshot)).toBeTruthy()
+    expect(Object.isFrozen(snapshot.entries)).toBeTruthy()
   })
 })
diff --git a/packages/core/src/stories/check.test.ts b/packages/core/src/stories/check.test.ts
index 8eb7657a..d1a5239a 100644
--- a/packages/core/src/stories/check.test.ts
+++ b/packages/core/src/stories/check.test.ts
@@ -5,6 +5,7 @@ import { z } from 'zod'
 import { MAX_EDITABLE_FIELDS, checkStories } from './check.js'
 import type { Story, StoryEntry, StoryGroup } from './types.js'
 
+// eslint-disable-next-line vitest/prefer-describe-function-title -- constant, not a function
 describe('MAX_EDITABLE_FIELDS', () => {
   it('should equal 6', () => {
     expect(MAX_EDITABLE_FIELDS).toBe(6)
@@ -37,7 +38,7 @@ describe('checkStories()', () => {
     const result = checkStories(entries)
 
     expect(result.storyCount).toBe(1)
-    expect(result.passed).toBe(true)
+    expect(result.passed).toBeTruthy()
     expect(result.diagnostics).toHaveLength(0)
   })
 
@@ -193,7 +194,7 @@ describe('checkStories()', () => {
 
     const entries = new Map<string, StoryEntry>([['ok', okStory]])
     const passingResult = checkStories(entries)
-    expect(passingResult.passed).toBe(true)
+    expect(passingResult.passed).toBeTruthy()
 
     const schema = z.object({ n: z.number() })
     const badStory = withTag(
@@ -211,14 +212,14 @@ describe('checkStories()', () => {
 
     const failEntries = new Map<string, StoryEntry>([['bad', badStory]])
     const failingResult = checkStories(failEntries)
-    expect(failingResult.passed).toBe(false)
+    expect(failingResult.passed).toBeFalsy()
   })
 
   it('should return a frozen result', () => {
     const entries = new Map<string, StoryEntry>()
     const result = checkStories(entries)
 
-    expect(Object.isFrozen(result)).toBe(true)
-    expect(Object.isFrozen(result.diagnostics)).toBe(true)
+    expect(Object.isFrozen(result)).toBeTruthy()
+    expect(Object.isFrozen(result.diagnostics)).toBeTruthy()
   })
 })
diff --git a/packages/core/src/ui/keys.ts b/packages/core/src/ui/keys.ts
index 0d0a968d..3e601930 100644
--- a/packages/core/src/ui/keys.ts
+++ b/packages/core/src/ui/keys.ts
@@ -100,8 +100,8 @@ export function normalizeKey(input: string, key: Key): NormalizedKeyEvent {
   return {
     key: resolvedKey,
     ctrl: key.ctrl,
-    // Terminal escape (\x1b) doubles as the meta prefix — clear the meta
-    // flag when the resolved key is 'escape' since it is protocol noise.
+    // Terminal escape (\x1b) doubles as the meta prefix — Clear the meta
+    // Flag when the resolved key is 'escape' since it is protocol noise.
     meta: match(resolvedKey)
       .with('escape', () => false)
       .otherwise(() => key.meta),
diff --git a/vitest.config.ts b/vitest.config.ts
index 35b61fd1..4b5c4eca 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -17,9 +17,9 @@ export default defineConfig({
         // ── React/Ink components ─────────────────────────────────────
         // These depend on Ink's rendering lifecycle, terminal I/O
         // (alt-screen buffers, resize events, stdin/stdout), and React
-        // hooks (useInput, useSyncExternalStore). They cannot be unit
-        // tested without a full terminal emulator. Covered implicitly
-        // by integration tests and the examples test suite.
+        // Hooks (useInput, useSyncExternalStore). They cannot be unit
+        // Tested without a full terminal emulator. Covered implicitly
+        // By integration tests and the examples test suite.
         '**/ui/layout/fullscreen.tsx',
         '**/ui/layout/use-size.tsx',
         '**/ui/layout/scroll-area.tsx',
@@ -34,25 +34,25 @@ export default defineConfig({
 
         // ── Stories viewer ───────────────────────────────────────────
         // Full Ink TUI application with panels, focus management, and
-        // live component preview. Requires interactive terminal.
+        // Live component preview. Requires interactive terminal.
         '**/stories/viewer/**',
         '**/stories/decorators.tsx',
 
         // ── Dynamic module loading ───────────────────────────────────
         // Patches Node module resolution at runtime via jiti and
-        // dynamic import(). Unsafe to unit test — the module patching
-        // side effects leak across test boundaries.
+        // Dynamic import(). Unsafe to unit test — the module patching
+        // Side effects leak across test boundaries.
         '**/stories/importer.ts',
 
         // ── Bun subprocess entry point ───────────────────────────────
         // Runs inside a `bun` process (not Node.js). Calls Bun.build()
-        // which is a Bun-only API unavailable in Vitest/Node.
+        // Which is a Bun-only API unavailable in Vitest/Node.
         '**/build/bun-runner.ts',
 
         // ── CLI command handlers (integration-tested) ────────────────
         // These are side-effect-heavy command handlers that spawn child
-        // processes, read process.argv/platform/arch, and depend on
-        // compiled binaries. Tested via integration test suite.
+        // Processes, read process.argv/platform/arch, and depend on
+        // Compiled binaries. Tested via integration test suite.
         '**/commands/run.ts',
         '**/commands/stories.ts',
       ],