diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
new file mode 100644
index 00000000..98a1335e
--- /dev/null
+++ b/.github/pull_request_template.md
@@ -0,0 +1,13 @@
+## Summary
+
+
+## Verification
+
+- [ ] I ran the relevant local checks, or explained why they do not apply.
+
+## Risk
+
+- [ ] This PR does not touch CLI core paths, or it has maintainer approval for `allow-cli-core-change`.
+- [ ] User-facing behavior changes include tests or an explanation of why tests are not practical.
+
+@dosubot review this PR for changed-area risk, missing tests, docs impact, desktop startup risk, and CLI core impact.
diff --git a/.github/workflows/pr-quality.yml b/.github/workflows/pr-quality.yml
new file mode 100644
index 00000000..71506c9d
--- /dev/null
+++ b/.github/workflows/pr-quality.yml
@@ -0,0 +1,181 @@
+name: PR Quality
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review, labeled, unlabeled]
+
+permissions:
+  contents: read
+  pull-requests: read
+
+concurrency:
+  group: pr-quality-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  change-policy:
+    name: change-policy
+    runs-on: ubuntu-latest
+    outputs:
+      areas: ${{ steps.policy.outputs.areas }}
+      area_labels: ${{ steps.policy.outputs.area_labels }}
+      blocked: ${{ steps.policy.outputs.blocked }}
+      desktop_checks: ${{ steps.policy.outputs.desktop_checks }}
+      server_checks: ${{ steps.policy.outputs.server_checks }}
+      adapter_checks: ${{ steps.policy.outputs.adapter_checks }}
+      desktop_native_checks: ${{ steps.policy.outputs.desktop_native_checks }}
+      docs_checks: ${{ steps.policy.outputs.docs_checks }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Run policy tests
+        run: bun run check:policy
+
+      - name: Collect changed files
+        env:
+          GH_TOKEN: ${{ github.token }}
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          REPOSITORY: ${{ github.repository }}
+        run: |
+          gh api "repos/${REPOSITORY}/pulls/${PR_NUMBER}/files" --paginate --jq '.[].filename' > changed-files.txt
+          jq -r '.pull_request.labels[].name' "$GITHUB_EVENT_PATH" > labels.txt
+
+      - name: Evaluate change policy
+        id: policy
+        run: bun run scripts/pr/change-policy.ts --files changed-files.txt --labels-file labels.txt
+
+  desktop-checks:
+    name: desktop-checks
+    needs: change-policy
+    if: needs.change-policy.outputs.desktop_checks == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Install root dependencies
+        run: bun install
+
+      - name: Install desktop dependencies
+        working-directory: desktop
+        run: bun install
+
+      - name: Run desktop checks
+        run: bun run check:desktop
+
+  server-checks:
+    name: server-checks
+    needs: change-policy
+    if: needs.change-policy.outputs.server_checks == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Install root dependencies
+        run: bun install
+
+      - name: Run server checks
+        run: bun run check:server
+
+  adapter-checks:
+    name: adapter-checks
+    needs: change-policy
+    if: needs.change-policy.outputs.adapter_checks == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Install adapter dependencies
+        working-directory: adapters
+        run: bun install
+
+      - name: Run adapter checks
+        run: bun run check:adapters
+
+  desktop-native-checks:
+    name: desktop-native-checks
+    needs: change-policy
+    if: needs.change-policy.outputs.desktop_native_checks == 'true'
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Linux dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            build-essential curl wget file \
+            libxdo-dev libssl-dev \
+            libwebkit2gtk-4.1-dev \
+            libayatana-appindicator3-dev \
+            librsvg2-dev patchelf \
+            libfuse2
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Rust cache
+        uses: swatinem/rust-cache@v2
+        with:
+          workspaces: 'desktop/src-tauri -> target'
+
+      - name: Install root dependencies
+        run: bun install
+
+      - name: Install desktop dependencies
+        working-directory: desktop
+        run: bun install
+
+      - name: Install adapter dependencies
+        working-directory: adapters
+        run: bun install
+
+      - name: Run desktop native checks
+        run: bun run check:native
+
+  docs-checks:
+    name: docs-checks
+    needs: change-policy
+    if: needs.change-policy.outputs.docs_checks == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+
+      - name: Run docs checks
+        run: npm ci && npm run docs:build
diff --git a/.github/workflows/pr-triage.yml b/.github/workflows/pr-triage.yml
new file mode 100644
index 00000000..89ec8d9d
--- /dev/null
+++ b/.github/workflows/pr-triage.yml
@@ -0,0 +1,259 @@
+name: PR Triage
+
+on:
+  pull_request_target:
+    types: [opened, synchronize, reopened, ready_for_review, labeled, unlabeled]
+
+permissions:
+  contents: read
+  issues: write
+  pull-requests: write
+
+concurrency:
+  group: pr-triage-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  triage:
+    name: label-and-summarize
+    runs-on: ubuntu-latest
+    steps:
+      - name: Apply deterministic PR labels and summary
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const owner = context.repo.owner
+            const repo = context.repo.repo
+            const issue_number = context.payload.pull_request.number
+
+            const managedLabels = {
+              'area:desktop': '1d76db',
+              'area:server': '0e8a16',
+              'area:adapters': '5319e7',
+              'area:docs': '0075ca',
+              'area:release': 'fbca04',
+              'area:cli-core': 'b60205',
+              'needs-maintainer-approval': 'b60205',
+              'allow-cli-core-change': 'c2e0c6',
+            }
+
+            const files = await github.paginate(github.rest.pulls.listFiles, {
+              owner,
+              repo,
+              pull_number: issue_number,
+              per_page: 100,
+            })
+            const filenames = files.map((file) => file.filename)
+            const currentLabels = new Set((context.payload.pull_request.labels || []).map((label) => label.name))
+
+            const areas = new Set()
+            const cliCoreFiles = []
+            const cliPrefixes = [
+              'bin/',
+              'src/entrypoints/',
+              'src/screens/',
+              'src/components/',
+              'src/commands/',
+              'src/tools/',
+              'src/utils/',
+            ]
+            const docsExact = new Set(['README.md', 'README.en.md', 'package.json', 'package-lock.json', '.github/workflows/deploy-docs.yml'])
+            const releaseExact = new Set([
+              '.github/workflows/pr-quality.yml',
+              '.github/workflows/pr-triage.yml',
+              '.github/workflows/release-desktop.yml',
+              '.github/workflows/build-desktop-dev.yml',
+              'scripts/pr/change-policy.ts',
+              'scripts/pr/change-policy.test.ts',
+              'scripts/pr/check-pr.ts',
+              'scripts/pr/run-server-tests.ts',
+              'scripts/release.ts',
+              'desktop/src-tauri/tauri.conf.json',
+              'desktop/src-tauri/Cargo.toml',
+              'desktop/src-tauri/Cargo.lock',
+            ])
+
+            for (const filename of filenames) {
+              if (filename.startsWith('desktop/')) areas.add('area:desktop')
+              if (filename.startsWith('src/server/')) areas.add('area:server')
+              if (filename.startsWith('adapters/')) areas.add('area:adapters')
+              if (filename.startsWith('docs/') || filename.startsWith('release-notes/') || docsExact.has(filename)) areas.add('area:docs')
+              if (releaseExact.has(filename)) areas.add('area:release')
+              if (cliPrefixes.some((prefix) => filename.startsWith(prefix))) {
+                areas.add('area:cli-core')
+                cliCoreFiles.push(filename)
+              }
+            }
+
+            if (cliCoreFiles.length > 0 && !currentLabels.has('allow-cli-core-change')) {
+              areas.add('needs-maintainer-approval')
+            }
+
+            const hasTest = (prefix) => filenames.some((file) =>
+              file.startsWith(prefix) && (/\.test\.[cm]?[jt]sx?$/.test(file) || file.includes('/__tests__/'))
+            )
+            const changedProduct = (predicate) => filenames.filter((file) =>
+              predicate(file) &&
+              !/\.test\.[cm]?[jt]sx?$/.test(file) &&
+              !file.includes('/__tests__/') &&
+              !file.includes('/fixtures/')
+            )
+            const desktopProduct = changedProduct((file) => file.startsWith('desktop/src/'))
+            const serverProduct = changedProduct((file) => file.startsWith('src/server/'))
+            const adapterProduct = changedProduct((file) => file.startsWith('adapters/'))
+            const agentRuntimeProduct = changedProduct((file) =>
+              file.startsWith('src/server/ws/') ||
+              file.startsWith('src/server/services/conversation') ||
+              file.startsWith('src/tools/') ||
+              file.startsWith('src/utils/')
+            )
+
+            const requiredChecks = ['change-policy']
+            if (areas.has('area:desktop') || areas.has('area:server')) requiredChecks.push('desktop-checks')
+            if (areas.has('area:server') || filenames.some((file) => file.startsWith('src/tools/') || file.startsWith('src/utils/'))) requiredChecks.push('server-checks')
+            if (areas.has('area:adapters')) requiredChecks.push('adapter-checks')
+            if (
+              filenames.some((file) =>
+                file.startsWith('desktop/') ||
+                file.startsWith('adapters/') ||
+                file.startsWith('src/server/') ||
+                ['bun.lock', 'package.json', 'desktop/bun.lock', 'desktop/package.json', 'desktop/package-lock.json', 'desktop/src-tauri/Cargo.lock', 'desktop/src-tauri/Cargo.toml', 'desktop/src-tauri/tauri.conf.json'].includes(file)
+              )
+            ) requiredChecks.push('desktop-native-checks')
+            if (areas.has('area:docs')) requiredChecks.push('docs-checks')
+
+            const testSignals = []
+            if (desktopProduct.length > 0 && !hasTest('desktop/src/')) {
+              testSignals.push('Desktop product files changed without a desktop test file in the PR.')
+            }
+            if (serverProduct.length > 0 && !hasTest('src/server/')) {
+              testSignals.push('Server product files changed without a server test file in the PR.')
+            }
+            if (adapterProduct.length > 0 && !hasTest('adapters/')) {
+              testSignals.push('Adapter product files changed without an adapter test file in the PR.')
+            }
+            if (agentRuntimeProduct.length > 0) {
+              testSignals.push('Agent/model runtime path changed: use mock/request-shape tests in PR and maintainer live-model smoke before release.')
+            }
+            if (testSignals.length === 0) {
+              testSignals.push('No obvious missing-test signal from changed paths.')
+            }
+
+            const riskNotes = []
+            if (filenames.some((file) => file.startsWith('desktop/src-tauri/'))) {
+              riskNotes.push('Tauri/native code changed: inspect sidecar build and cargo check.')
+            }
+            if (filenames.some((file) => file.startsWith('desktop/src/stores/') || file.startsWith('desktop/src/api/'))) {
+              riskNotes.push('Desktop state/API layer changed: verify store persistence, WebSocket behavior, and startup errors.')
+            }
+            if (filenames.some((file) => file.startsWith('src/server/ws/') || file.startsWith('src/server/services/conversation'))) {
+              riskNotes.push('Session runtime changed: review reconnect, startup diagnostics, provider selection, and thinking settings.')
+            }
+            if (filenames.some((file) => file.includes('provider') || file.includes('WebSearchTool'))) {
+              riskNotes.push('Provider/search behavior changed: PR gate uses mock tests; live-provider tests stay maintainer-only.')
+            }
+            if (filenames.some((file) => file.startsWith('.github/workflows/') || file.startsWith('scripts/pr/'))) {
+              riskNotes.push('CI/policy changed: inspect workflow behavior itself, not just application tests.')
+            }
+            if (riskNotes.length === 0) {
+              riskNotes.push('No special risk notes from changed paths.')
+            }
+
+            for (const [name, color] of Object.entries(managedLabels)) {
+              try {
+                await github.rest.issues.createLabel({
+                  owner,
+                  repo,
+                  name,
+                  color,
+                })
+              } catch (error) {
+                if (error.status !== 422) throw error
+              }
+            }
+
+            const desiredLabels = [...areas]
+            if (desiredLabels.length > 0) {
+              await github.rest.issues.addLabels({
+                owner,
+                repo,
+                issue_number,
+                labels: desiredLabels,
+              })
+            }
+
+            for (const label of Object.keys(managedLabels)) {
+              if (label === 'allow-cli-core-change') continue
+              if (!areas.has(label) && currentLabels.has(label)) {
+                try {
+                  await github.rest.issues.removeLabel({
+                    owner,
+                    repo,
+                    issue_number,
+                    name: label,
+                  })
+                } catch (error) {
+                  if (error.status !== 404) throw error
+                }
+              }
+            }
+
+            const marker = '<!-- pr-quality-triage -->'
+            const areaText = [...areas].filter((label) => label.startsWith('area:')).sort().join(', ') || 'none'
+            const approvalText = cliCoreFiles.length > 0 && !currentLabels.has('allow-cli-core-change')
+              ? 'Blocked by policy until a maintainer applies `allow-cli-core-change` and approves the PR.'
+              : 'No CLI-core policy block detected.'
+            const cliFilesText = cliCoreFiles.length
+              ? cliCoreFiles.slice(0, 20).map((file) => `- \`${file}\``).join('\n')
+              : '- none'
+
+            const body = [
+              marker,
+              '## PR quality triage',
+              '',
+              `**Changed areas:** ${areaText}`,
+              '',
+              `**CLI core policy:** ${approvalText}`,
+              '',
+              '**CLI core files:**',
+              cliFilesText,
+              '',
+              '**Expected checks:**',
+              requiredChecks.map((check) => `- \`${check}\``).join('\n'),
+              '',
+              '**Test coverage signals:**',
+              testSignals.map((signal) => `- ${signal}`).join('\n'),
+              '',
+              '**Risk notes:**',
+              riskNotes.map((note) => `- ${note}`).join('\n'),
+              '',
+              '**Dosu handoff:** Dosu can be used as the AI reviewer for risk explanation, missing-test prompts, and maintainer Q&A. If it does not comment automatically from the PR template, ask:',
+              '',
+              '`@dosubot review this PR for changed-area risk, missing tests, docs impact, desktop startup risk, and CLI core impact.`',
+              '',
+              'Hard merge gates still come from GitHub Actions, not AI review.',
+            ].join('\n')
+
+            const comments = await github.paginate(github.rest.issues.listComments, {
+              owner,
+              repo,
+              issue_number,
+              per_page: 100,
+            })
+            const existing = comments.find((comment) => comment.body && comment.body.includes(marker))
+
+            if (existing) {
+              await github.rest.issues.updateComment({
+                owner,
+                repo,
+                comment_id: existing.id,
+                body,
+              })
+            } else {
+              await github.rest.issues.createComment({
+                owner,
+                repo,
+                issue_number,
+                body,
+              })
+            }
diff --git a/package.json b/package.json
index 575fff06..4a2b324d 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,14 @@
   "scripts": {
     "claude-haha": "bun run ./bin/claude-haha",
     "start": "bun run ./bin/claude-haha",
+    "check:pr": "bun run scripts/pr/check-pr.ts",
+    "check:impact": "bun run scripts/pr/impact-report.ts",
+    "check:policy": "bun test scripts/pr/change-policy.test.ts",
+    "check:server": "bun run scripts/pr/run-server-tests.ts",
+    "check:desktop": "cd desktop && bun run lint && bun run test -- --run && bun run build",
+    "check:adapters": "cd adapters && bun test",
+    "check:native": "cd desktop && bun run build:sidecars && cd src-tauri && cargo check",
+    "check:docs": "npm ci && npm run docs:build",
     "docs:dev": "vitepress dev docs",
     "docs:build": "vitepress build docs",
     "docs:preview": "vitepress preview docs"
diff --git a/scripts/pr/change-policy.test.ts b/scripts/pr/change-policy.test.ts
new file mode 100644
index 00000000..cd4f7e63
--- /dev/null
+++ b/scripts/pr/change-policy.test.ts
@@ -0,0 +1,62 @@
+import { describe, expect, test } from 'bun:test'
+import { evaluateChangePolicy } from './change-policy'
+
+describe('evaluateChangePolicy', () => {
+  test('blocks CLI core changes without an override label', () => {
+    const result = evaluateChangePolicy([
+      'src/commands/help.ts',
+      'desktop/src/pages/Settings.tsx',
+    ])
+
+    expect(result.blocked).toBe(true)
+    expect(result.areas).toContain('cli-core')
+    expect(result.areas).toContain('desktop')
+    expect(result.areaLabels).toContain('area:cli-core')
+    expect(result.areaLabels).toContain('area:desktop')
+    expect(result.cliCoreFiles).toEqual(['src/commands/help.ts'])
+  })
+
+  test('allows CLI core changes with a maintainer override label', () => {
+    const result = evaluateChangePolicy(
+      ['src/tools/WebSearchTool/backend.ts'],
+      ['allow-cli-core-change'],
+    )
+
+    expect(result.blocked).toBe(false)
+    expect(result.areas).toEqual(['cli-core'])
+    expect(result.checks.server).toBe(true)
+  })
+
+  test('keeps docs-only changes on the docs lane', () => {
+    const result = evaluateChangePolicy([
+      'docs/index.md',
+      'README.md',
+    ])
+
+    expect(result.blocked).toBe(false)
+    expect(result.areas).toEqual(['docs'])
+    expect(result.checks.docs).toBe(true)
+    expect(result.checks.desktop).toBe(false)
+    expect(result.checks.desktopNative).toBe(false)
+  })
+
+  test('routes desktop and server changes to desktop and native checks', () => {
+    const result = evaluateChangePolicy([
+      'desktop/src/pages/Settings.tsx',
+      'src/server/ws/handler.ts',
+    ])
+
+    expect(result.areas).toEqual(['desktop', 'server'])
+    expect(result.checks.desktop).toBe(true)
+    expect(result.checks.server).toBe(true)
+    expect(result.checks.desktopNative).toBe(true)
+  })
+
+  test('routes adapter changes to adapter and native checks', () => {
+    const result = evaluateChangePolicy(['adapters/telegram/index.ts'])
+
+    expect(result.areas).toEqual(['adapters'])
+    expect(result.checks.adapters).toBe(true)
+    expect(result.checks.desktopNative).toBe(true)
+  })
+})
diff --git a/scripts/pr/change-policy.ts b/scripts/pr/change-policy.ts
new file mode 100644
index 00000000..21a9bd03
--- /dev/null
+++ b/scripts/pr/change-policy.ts
@@ -0,0 +1,287 @@
+#!/usr/bin/env bun
+
+import { existsSync, readFileSync, appendFileSync } from 'node:fs'
+
+export type ChangeArea =
+  | 'desktop'
+  | 'server'
+  | 'adapters'
+  | 'docs'
+  | 'release'
+  | 'cli-core'
+
+export type ChangePolicyResult = {
+  files: string[]
+  labels: string[]
+  areas: ChangeArea[]
+  areaLabels: string[]
+  blocked: boolean
+  blockingReason: string | null
+  cliCoreFiles: string[]
+  checks: {
+    desktop: boolean
+    server: boolean
+    adapters: boolean
+    desktopNative: boolean
+    docs: boolean
+  }
+}
+
+const ALLOW_CLI_CORE_LABEL = 'allow-cli-core-change'
+
+const areaLabels: Record<ChangeArea, string> = {
+  desktop: 'area:desktop',
+  server: 'area:server',
+  adapters: 'area:adapters',
+  docs: 'area:docs',
+  release: 'area:release',
+  'cli-core': 'area:cli-core',
+}
+
+const cliCorePrefixes = [
+  'bin/',
+  'src/entrypoints/',
+  'src/screens/',
+  'src/components/',
+  'src/commands/',
+  'src/tools/',
+  'src/utils/',
+]
+
+const desktopNativeExactPaths = new Set([
+  'bun.lock',
+  'package.json',
+  'desktop/bun.lock',
+  'desktop/package.json',
+  'desktop/package-lock.json',
+  'desktop/src-tauri/Cargo.lock',
+  'desktop/src-tauri/Cargo.toml',
+  'desktop/src-tauri/tauri.conf.json',
+])
+
+const docsExactPaths = new Set([
+  'README.md',
+  'README.en.md',
+  'package.json',
+  'package-lock.json',
+  '.github/workflows/deploy-docs.yml',
+])
+
+const releaseExactPaths = new Set([
+  '.github/workflows/pr-quality.yml',
+  '.github/workflows/pr-triage.yml',
+  '.github/workflows/release-desktop.yml',
+  '.github/workflows/build-desktop-dev.yml',
+  'scripts/pr/change-policy.ts',
+  'scripts/pr/change-policy.test.ts',
+  'scripts/pr/check-pr.ts',
+  'scripts/pr/run-server-tests.ts',
+  'scripts/release.ts',
+  'desktop/src-tauri/tauri.conf.json',
+  'desktop/src-tauri/Cargo.toml',
+  'desktop/src-tauri/Cargo.lock',
+])
+
+function normalizePath(path: string) {
+  return path.trim().replace(/\\/g, '/').replace(/^\.\//, '')
+}
+
+function startsWithAny(path: string, prefixes: string[]) {
+  return prefixes.some((prefix) => path.startsWith(prefix))
+}
+
+function isCliCorePath(path: string) {
+  return startsWithAny(path, cliCorePrefixes)
+}
+
+function areasForPath(path: string): ChangeArea[] {
+  const areas = new Set<ChangeArea>()
+
+  if (path.startsWith('desktop/')) {
+    areas.add('desktop')
+  }
+
+  if (path.startsWith('src/server/')) {
+    areas.add('server')
+  }
+
+  if (path.startsWith('adapters/')) {
+    areas.add('adapters')
+  }
+
+  if (
+    path.startsWith('docs/') ||
+    path.startsWith('release-notes/') ||
+    docsExactPaths.has(path)
+  ) {
+    areas.add('docs')
+  }
+
+  if (releaseExactPaths.has(path)) {
+    areas.add('release')
+  }
+
+  if (isCliCorePath(path)) {
+    areas.add('cli-core')
+  }
+
+  return [...areas]
+}
+
+export function evaluateChangePolicy(
+  inputFiles: string[],
+  inputLabels: string[] = [],
+): ChangePolicyResult {
+  const files = [...new Set(inputFiles.map(normalizePath).filter(Boolean))].sort()
+  const labels = [...new Set(inputLabels.map((label) => label.trim()).filter(Boolean))].sort()
+  const areas = new Set<ChangeArea>()
+
+  for (const file of files) {
+    for (const area of areasForPath(file)) {
+      areas.add(area)
+    }
+  }
+
+  const cliCoreFiles = files.filter(isCliCorePath)
+  const hasCliCoreChange = cliCoreFiles.length > 0
+  const hasCliCoreOverride = labels.includes(ALLOW_CLI_CORE_LABEL)
+  const blocked = hasCliCoreChange && !hasCliCoreOverride
+
+  const touchesDesktopNative = files.some((file) => (
+    file.startsWith('desktop/') ||
+    file.startsWith('adapters/') ||
+    file.startsWith('src/server/') ||
+    desktopNativeExactPaths.has(file)
+  ))
+
+  const touchesDocs = files.some((file) => (
+    file.startsWith('docs/') ||
+    file.startsWith('release-notes/') ||
+    docsExactPaths.has(file)
+  ))
+
+  const orderedAreas = [...areas].sort()
+
+  return {
+    files,
+    labels,
+    areas: orderedAreas,
+    areaLabels: orderedAreas.map((area) => areaLabels[area]),
+    blocked,
+    blockingReason: blocked
+      ? `CLI core changes require the ${ALLOW_CLI_CORE_LABEL} label and maintainer approval.`
+      : null,
+    cliCoreFiles,
+    checks: {
+      desktop: areas.has('desktop') || areas.has('server'),
+      server: areas.has('server') || files.some((file) => file.startsWith('src/tools/') || file.startsWith('src/utils/')),
+      adapters: areas.has('adapters'),
+      desktopNative: touchesDesktopNative,
+      docs: touchesDocs,
+    },
+  }
+}
+
+function parseArgs(argv: string[]) {
+  const args = new Map<string, string>()
+
+  for (let index = 0; index < argv.length; index += 1) {
+    const arg = argv[index]
+    if (!arg.startsWith('--')) {
+      continue
+    }
+
+    const next = argv[index + 1]
+    if (next && !next.startsWith('--')) {
+      args.set(arg, next)
+      index += 1
+    } else {
+      args.set(arg, 'true')
+    }
+  }
+
+  return args
+}
+
+function readListFile(path: string) {
+  if (!existsSync(path)) {
+    throw new Error(`Missing file: ${path}`)
+  }
+
+  return readFileSync(path, 'utf8')
+    .split(/\r?\n/)
+    .map((line) => line.trim())
+    .filter(Boolean)
+}
+
+function formatSummary(result: ChangePolicyResult) {
+  const lines = [
+    'PR change policy',
+    `  Areas: ${result.areas.length ? result.areas.join(', ') : 'none'}`,
+    `  Labels: ${result.labels.length ? result.labels.join(', ') : 'none'}`,
+    `  Checks: desktop=${result.checks.desktop}, server=${result.checks.server}, adapters=${result.checks.adapters}, desktopNative=${result.checks.desktopNative}, docs=${result.checks.docs}`,
+  ]
+
+  if (result.cliCoreFiles.length > 0) {
+    lines.push('  CLI core files:')
+    for (const file of result.cliCoreFiles) {
+      lines.push(`    - ${file}`)
+    }
+  }
+
+  if (result.blockingReason) {
+    lines.push(`  Blocked: ${result.blockingReason}`)
+  }
+
+  return lines.join('\n')
+}
+
+function writeGithubOutputs(result: ChangePolicyResult) {
+  const outputPath = process.env.GITHUB_OUTPUT
+  if (!outputPath) {
+    return
+  }
+
+  const outputs = {
+    areas: result.areas.join(','),
+    area_labels: result.areaLabels.join(','),
+    blocked: String(result.blocked),
+    desktop_checks: String(result.checks.desktop),
+    server_checks: String(result.checks.server),
+    adapter_checks: String(result.checks.adapters),
+    desktop_native_checks: String(result.checks.desktopNative),
+    docs_checks: String(result.checks.docs),
+  }
+
+  appendFileSync(
+    outputPath,
+    Object.entries(outputs)
+      .map(([key, value]) => `${key}=${value}`)
+      .join('\n') + '\n',
+  )
+}
+
+if (import.meta.main) {
+  const args = parseArgs(process.argv.slice(2))
+  const filesPath = args.get('--files')
+  const labelsPath = args.get('--labels-file')
+  const labelsArg = args.get('--labels')
+
+  if (!filesPath) {
+    console.error('Usage: bun run scripts/pr/change-policy.ts --files <changed-files.txt> [--labels-file <labels.txt>]')
+    process.exit(2)
+  }
+
+  const files = readListFile(filesPath)
+  const labels = labelsPath
+    ? readListFile(labelsPath)
+    : labelsArg?.split(',').map((label) => label.trim()).filter(Boolean) ?? []
+
+  const result = evaluateChangePolicy(files, labels)
+  console.log(formatSummary(result))
+  writeGithubOutputs(result)
+
+  if (result.blocked) {
+    process.exit(1)
+  }
+}
diff --git a/scripts/pr/check-pr.ts b/scripts/pr/check-pr.ts
new file mode 100644
index 00000000..20bb3c5a
--- /dev/null
+++ b/scripts/pr/check-pr.ts
@@ -0,0 +1,114 @@
+#!/usr/bin/env bun
+
+import { evaluateChangePolicy } from './change-policy'
+
+async function run(cmd: string[], options: { optional?: boolean } = {}) {
+  console.log(`\n$ ${cmd.join(' ')}`)
+  const proc = Bun.spawn(cmd, {
+    stdout: 'inherit',
+    stderr: 'inherit',
+  })
+  const code = await proc.exited
+
+  if (code !== 0 && !options.optional) {
+    process.exit(code)
+  }
+
+  return code
+}
+
+async function output(cmd: string[]) {
+  const proc = Bun.spawn(cmd, {
+    stdout: 'pipe',
+    stderr: 'pipe',
+  })
+  const stdout = await new Response(proc.stdout).text()
+  const stderr = await new Response(proc.stderr).text()
+  const code = await proc.exited
+
+  if (code !== 0) {
+    throw new Error(stderr || stdout || `Command failed: ${cmd.join(' ')}`)
+  }
+
+  return stdout.trim()
+}
+
+async function outputOrEmpty(cmd: string[]) {
+  try {
+    return await output(cmd)
+  } catch {
+    return ''
+  }
+}
+
+async function localChangedFiles() {
+  const staged = await outputOrEmpty(['git', 'diff', '--name-only', '--cached'])
+  const unstaged = await outputOrEmpty(['git', 'diff', '--name-only'])
+  const untracked = await outputOrEmpty(['git', 'ls-files', '--others', '--exclude-standard'])
+
+  return [...staged.split(/\r?\n/), ...unstaged.split(/\r?\n/), ...untracked.split(/\r?\n/)]
+    .filter(Boolean)
+}
+
+async function changedFiles() {
+  const explicit = process.argv.slice(2).filter((arg) => !arg.startsWith('--'))
+  if (explicit.length > 0) {
+    return explicit
+  }
+
+  const base = process.env.PR_BASE_REF ?? 'origin/main'
+  const localFiles = await localChangedFiles()
+  try {
+    const diff = await output(['git', 'diff', '--name-only', `${base}...HEAD`])
+    return [...new Set([...diff.split(/\r?\n/), ...localFiles].filter(Boolean))]
+  } catch {
+    try {
+      const diff = await output(['git', 'diff', '--name-only', 'main...HEAD'])
+      return [...new Set([...diff.split(/\r?\n/), ...localFiles].filter(Boolean))]
+    } catch {
+      return [...new Set(localFiles)]
+    }
+  }
+}
+
+const files = await changedFiles()
+const labels = process.env.PR_LABELS?.split(',').map((label) => label.trim()).filter(Boolean) ?? []
+if (process.env.ALLOW_CLI_CORE_CHANGE === '1' && !labels.includes('allow-cli-core-change')) {
+  labels.push('allow-cli-core-change')
+}
+
+const result = evaluateChangePolicy(files, labels)
+
+console.log('PR local check plan')
+console.log(`  Files: ${files.length}`)
+console.log(`  Areas: ${result.areas.length ? result.areas.join(', ') : 'none'}`)
+
+if (result.blockingReason) {
+  console.error(`\nBlocked: ${result.blockingReason}`)
+  console.error('Set ALLOW_CLI_CORE_CHANGE=1 only after maintainer approval.')
+  process.exit(1)
+}
+
+await run(['bun', 'run', 'check:policy'])
+
+if (result.checks.desktop) {
+  await run(['bun', 'run', 'check:desktop'])
+}
+
+if (result.checks.server) {
+  await run(['bun', 'run', 'check:server'])
+}
+
+if (result.checks.adapters) {
+  await run(['bun', 'run', 'check:adapters'])
+}
+
+if (result.checks.desktopNative) {
+  await run(['bun', 'run', 'check:native'])
+}
+
+if (result.checks.docs) {
+  await run(['bun', 'run', 'check:docs'])
+}
+
+console.log('\nPR local checks completed.')
diff --git a/scripts/pr/impact-report.ts b/scripts/pr/impact-report.ts
new file mode 100644
index 00000000..fd0ecb2e
--- /dev/null
+++ b/scripts/pr/impact-report.ts
@@ -0,0 +1,220 @@
+#!/usr/bin/env bun
+
+import { evaluateChangePolicy } from './change-policy'
+
+async function output(cmd: string[]) {
+  const proc = Bun.spawn(cmd, {
+    stdout: 'pipe',
+    stderr: 'pipe',
+  })
+  const stdout = await new Response(proc.stdout).text()
+  const stderr = await new Response(proc.stderr).text()
+  const code = await proc.exited
+
+  if (code !== 0) {
+    throw new Error(stderr || stdout || `Command failed: ${cmd.join(' ')}`)
+  }
+
+  return stdout.trim()
+}
+
+async function outputOrEmpty(cmd: string[]) {
+  try {
+    return await output(cmd)
+  } catch {
+    return ''
+  }
+}
+
+async function localChangedFiles() {
+  const staged = await outputOrEmpty(['git', 'diff', '--name-only', '--cached'])
+  const unstaged = await outputOrEmpty(['git', 'diff', '--name-only'])
+  const untracked = await outputOrEmpty(['git', 'ls-files', '--others', '--exclude-standard'])
+
+  return [...staged.split(/\r?\n/), ...unstaged.split(/\r?\n/), ...untracked.split(/\r?\n/)]
+    .filter(Boolean)
+}
+
+function parseListArg(name: string) {
+  const index = process.argv.indexOf(name)
+  if (index === -1) {
+    return []
+  }
+
+  const value = process.argv[index + 1]
+  if (!value || value.startsWith('--')) {
+    return []
+  }
+
+  return value.split(',').map((item) => item.trim()).filter(Boolean)
+}
+
+async function changedFiles() {
+  const files = parseListArg('--files')
+  if (files.length > 0) {
+    return files
+  }
+
+  const base = process.env.PR_BASE_REF ?? 'origin/main'
+  const localFiles = await localChangedFiles()
+  try {
+    const diff = await output(['git', 'diff', '--name-only', `${base}...HEAD`])
+    return [...new Set([...diff.split(/\r?\n/), ...localFiles].filter(Boolean))]
+  } catch {
+    try {
+      const diff = await output(['git', 'diff', '--name-only', 'main...HEAD'])
+      return [...new Set([...diff.split(/\r?\n/), ...localFiles].filter(Boolean))]
+    } catch {
+      return [...new Set(localFiles)]
+    }
+  }
+}
+
+function commandList(result: ReturnType<typeof evaluateChangePolicy>) {
+  const commands = ['bun run check:policy']
+
+  if (result.checks.desktop) {
+    commands.push('bun run check:desktop')
+  }
+  if (result.checks.server) {
+    commands.push('bun run check:server')
+  }
+  if (result.checks.adapters) {
+    commands.push('bun run check:adapters')
+  }
+  if (result.checks.desktopNative) {
+    commands.push('bun run check:native')
+  }
+  if (result.checks.docs) {
+    commands.push('bun run check:docs')
+  }
+
+  return commands
+}
+
+function hasMatchingTest(files: string[], predicate: (file: string) => boolean) {
+  return files.some((file) => (
+    predicate(file) &&
+    (/\.test\.[cm]?[jt]sx?$/.test(file) || file.includes('/__tests__/'))
+  ))
+}
+
+function changedProductionFiles(files: string[], predicate: (file: string) => boolean) {
+  return files.filter((file) => (
+    predicate(file) &&
+    !/\.test\.[cm]?[jt]sx?$/.test(file) &&
+    !file.includes('/__tests__/') &&
+    !file.includes('/fixtures/')
+  ))
+}
+
+function coverageWarnings(files: string[]) {
+  const warnings: string[] = []
+  const desktopProd = changedProductionFiles(files, (file) => file.startsWith('desktop/src/'))
+  const serverProd = changedProductionFiles(files, (file) => file.startsWith('src/server/'))
+  const adapterProd = changedProductionFiles(files, (file) => file.startsWith('adapters/'))
+  const agentRuntimeProd = changedProductionFiles(files, (file) => (
+    file.startsWith('src/server/ws/') ||
+    file.startsWith('src/server/services/conversation') ||
+    file.startsWith('src/tools/') ||
+    file.startsWith('src/utils/')
+  ))
+
+  if (desktopProd.length > 0 && !hasMatchingTest(files, (file) => file.startsWith('desktop/src/'))) {
+    warnings.push('Desktop product files changed without a desktop test file in the PR.')
+  }
+
+  if (serverProd.length > 0 && !hasMatchingTest(files, (file) => file.startsWith('src/server/'))) {
+    warnings.push('Server product files changed without a server test file in the PR.')
+  }
+
+  if (adapterProd.length > 0 && !hasMatchingTest(files, (file) => file.startsWith('adapters/'))) {
+    warnings.push('Adapter product files changed without an adapter test file in the PR.')
+  }
+
+  if (agentRuntimeProd.length > 0) {
+    warnings.push('Agent/model runtime path changed: prefer request-shape/mock tests in PR and maintainer live-model smoke before release.')
+  }
+
+  return warnings
+}
+
+function riskNotes(files: string[]) {
+  const notes: string[] = []
+
+  if (files.some((file) => file.startsWith('desktop/src-tauri/'))) {
+    notes.push('Tauri/native code changed: check sidecar build and cargo check output closely.')
+  }
+  if (files.some((file) => file.startsWith('desktop/src/stores/') || file.startsWith('desktop/src/api/'))) {
+    notes.push('Desktop state/API layer changed: verify store persistence, WebSocket behavior, and startup errors.')
+  }
+  if (files.some((file) => file.startsWith('src/server/ws/') || file.startsWith('src/server/services/conversation'))) {
+    notes.push('Session runtime changed: review reconnect, startup diagnostics, provider selection, and thinking settings.')
+  }
+  if (files.some((file) => file.includes('provider') || file.includes('WebSearchTool'))) {
+    notes.push('Provider/search behavior changed: PR gate uses mock tests; live-provider tests should stay maintainer-only.')
+  }
+  if (files.some((file) => file.startsWith('.github/workflows/') || file.startsWith('scripts/pr/'))) {
+    notes.push('CI/policy changed: inspect the PR workflow behavior itself, not just application tests.')
+  }
+
+  return notes
+}
+
+const labels = [
+  ...parseListArg('--labels'),
+  ...(process.env.PR_LABELS?.split(',').map((label) => label.trim()).filter(Boolean) ?? []),
+]
+
+if (process.env.ALLOW_CLI_CORE_CHANGE === '1') {
+  labels.push('allow-cli-core-change')
+}
+
+const files = await changedFiles()
+const result = evaluateChangePolicy(files, labels)
+const commands = commandList(result)
+const warnings = coverageWarnings(result.files)
+const notes = riskNotes(result.files)
+
+console.log('# PR impact report')
+console.log('')
+console.log(`Changed files: ${result.files.length}`)
+console.log(`Areas: ${result.areas.length ? result.areas.join(', ') : 'none'}`)
+console.log(`Labels: ${result.labels.length ? result.labels.join(', ') : 'none'}`)
+console.log(`Blocked: ${result.blocked ? 'yes' : 'no'}`)
+
+if (result.blockingReason) {
+  console.log(`Blocking reason: ${result.blockingReason}`)
+}
+
+console.log('')
+console.log('## Required local checks')
+for (const command of commands) {
+  console.log(`- \`${command}\``)
+}
+
+console.log('')
+console.log('## Test coverage signals')
+if (warnings.length === 0) {
+  console.log('- No obvious missing-test signal from changed paths.')
+} else {
+  for (const warning of warnings) {
+    console.log(`- ${warning}`)
+  }
+}
+
+console.log('')
+console.log('## Risk notes')
+if (notes.length === 0) {
+  console.log('- No special risk notes from changed paths.')
+} else {
+  for (const note of notes) {
+    console.log(`- ${note}`)
+  }
+}
+
+console.log('')
+console.log('## Agent/model testing policy')
+console.log('- Default PR gate should not call real models or live providers.')
+console.log('- Cover agent behavior with mock CLI, request-shape assertions, transcript fixtures, and provider capability tests.')
+console.log('- Run live-model smoke tests only in maintainer-controlled workflows with secrets, rate limits, and explicit labels.')
diff --git a/scripts/pr/run-server-tests.ts b/scripts/pr/run-server-tests.ts
new file mode 100644
index 00000000..baadf80a
--- /dev/null
+++ b/scripts/pr/run-server-tests.ts
@@ -0,0 +1,60 @@
+#!/usr/bin/env bun
+
+import { readdirSync, statSync } from 'node:fs'
+import { join, relative, sep } from 'node:path'
+
+const root = process.cwd()
+const roots = ['src/server', 'src/tools', 'src/utils']
+const excludedFiles = new Set([
+  // These suites are not stable enough for the default PR gate yet. Keep them
+  // out of CI until they are fixed or moved to a maintainer-only workflow.
+  'src/server/__tests__/cron-scheduler.test.ts',
+  'src/server/__tests__/providers-real.test.ts',
+  'src/server/__tests__/tasks.test.ts',
+  'src/server/__tests__/e2e/business-flow.test.ts',
+  'src/server/__tests__/e2e/full-flow.test.ts',
+])
+
+function normalize(path: string) {
+  return relative(root, path).split(sep).join('/')
+}
+
+function walk(path: string, files: string[]) {
+  const stat = statSync(path)
+
+  if (stat.isDirectory()) {
+    for (const entry of readdirSync(path)) {
+      walk(join(path, entry), files)
+    }
+    return
+  }
+
+  if (!stat.isFile()) {
+    return
+  }
+
+  const normalized = normalize(path)
+  if (normalized.endsWith('.test.ts') && !excludedFiles.has(normalized)) {
+    files.push(normalized)
+  }
+}
+
+const testFiles: string[] = []
+for (const testRoot of roots) {
+  walk(join(root, testRoot), testFiles)
+}
+
+testFiles.sort()
+
+if (testFiles.length === 0) {
+  console.log('No server-side test files found.')
+  process.exit(0)
+}
+
+const proc = Bun.spawn(['bun', 'test', ...testFiles], {
+  cwd: root,
+  stdout: 'inherit',
+  stderr: 'inherit',
+})
+
+process.exit(await proc.exited)