diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..84ece8a
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,169 @@
+name: Build & Release
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Release tag (e.g. v2.1.88)'
+        required: false
+        default: ''
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    name: Build (${{ matrix.os }})
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: linux-x64
+            runner: ubuntu-latest
+            artifact: claude-linux-x64
+          - os: linux-arm64
+            runner: ubuntu-24.04-arm
+            artifact: claude-linux-arm64
+          - os: macos-x64
+            runner: macos-13
+            artifact: claude-macos-x64
+          - os: macos-arm64
+            runner: macos-latest
+            artifact: claude-macos-arm64
+          - os: windows-x64
+            runner: windows-latest
+            artifact: claude-windows-x64.exe
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: '1.3.11'
+
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+
+      - name: Build binary
+        run: bun run compile
+
+      - name: Rename binary (Unix)
+        if: runner.os != 'Windows'
+        run: |
+          mkdir -p release
+          cp dist/cli release/${{ matrix.artifact }}
+          chmod +x release/${{ matrix.artifact }}
+
+      - name: Rename binary (Windows)
+        if: runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          New-Item -ItemType Directory -Force -Path release
+          Copy-Item dist/cli.exe release/${{ matrix.artifact }}
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.artifact }}
+          path: release/${{ matrix.artifact }}
+          retention-days: 7
+
+  release:
+    name: Create GitHub Release
+    needs: build
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/') || github.event_name == 'workflow_dispatch'
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: release/
+
+      - name: Flatten release directory
+        run: |
+          find release/ -type f | while read f; do
+            mv "$f" release/$(basename "$f")
+          done
+          find release/ -type d -empty -delete
+
+      - name: Determine release tag
+        id: tag
+        run: |
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ] && [ -n "${{ github.event.inputs.tag }}" ]; then
+            echo "tag=${{ github.event.inputs.tag }}" >> $GITHUB_OUTPUT
+          else
+            echo "tag=${GITHUB_REF_NAME}" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Generate checksums
+        run: |
+          cd release
+          sha256sum claude-linux-x64 claude-linux-arm64 claude-macos-x64 claude-macos-arm64 claude-windows-x64.exe > SHA256SUMS.txt 2>/dev/null || true
+          cat SHA256SUMS.txt
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ steps.tag.outputs.tag }}
+          name: Claude Code ${{ steps.tag.outputs.tag }}
+          draft: false
+          prerelease: false
+          generate_release_notes: true
+          body: |
+            ## 安装说明 / Installation
+
+            ### macOS (Apple Silicon)
+            ```bash
+            curl -L https://github.com/${{ github.repository }}/releases/download/${{ steps.tag.outputs.tag }}/claude-macos-arm64 -o claude
+            chmod +x claude && sudo mv claude /usr/local/bin/claude
+            ```
+
+            ### macOS (Intel)
+            ```bash
+            curl -L https://github.com/${{ github.repository }}/releases/download/${{ steps.tag.outputs.tag }}/claude-macos-x64 -o claude
+            chmod +x claude && sudo mv claude /usr/local/bin/claude
+            ```
+
+            ### Linux (x64)
+            ```bash
+            curl -L https://github.com/${{ github.repository }}/releases/download/${{ steps.tag.outputs.tag }}/claude-linux-x64 -o claude
+            chmod +x claude && sudo mv claude /usr/local/bin/claude
+            ```
+
+            ### Linux (ARM64)
+            ```bash
+            curl -L https://github.com/${{ github.repository }}/releases/download/${{ steps.tag.outputs.tag }}/claude-linux-arm64 -o claude
+            chmod +x claude && sudo mv claude /usr/local/bin/claude
+            ```
+
+            ### Windows (x64)
+            下载 `claude-windows-x64.exe`，将其重命名为 `claude.exe` 并添加到 PATH。
+
+            ### 验证 / Verify
+            ```bash
+            claude --version
+            ```
+
+            ### 隐私说明 / Privacy
+            本构建已移除以下外部数据传输：
+            - ✅ 已删除 WebFetch 域名检查（不再向 Anthropic 上报访问域名）
+            - ✅ 已禁用 Codex API 路由（不再将对话转发至 OpenAI chatgpt.com）
+            - ✅ Analytics/遥测已为空存根（无实际数据发送）
+            - ✅ GrowthBook/Statsig 仅使用本地缓存（无远程请求）
+          files: |
+            release/claude-linux-x64
+            release/claude-linux-arm64
+            release/claude-macos-x64
+            release/claude-macos-arm64
+            release/claude-windows-x64.exe
+            release/SHA256SUMS.txt
diff --git a/src/services/api/codex-fetch-adapter.ts b/src/services/api/codex-fetch-adapter.ts
index d883f2b..30a294b 100755
--- a/src/services/api/codex-fetch-adapter.ts
+++ b/src/services/api/codex-fetch-adapter.ts
@@ -736,77 +736,27 @@ async function translateCodexStreamToAnthropic(
 
 // ── Main fetch interceptor ──────────────────────────────────────────
 
-const CODEX_BASE_URL = 'https://chatgpt.com/backend-api/codex/responses'
-
 /**
- * Creates a fetch function that intercepts Anthropic API calls and routes them to Codex.
- * @param accessToken - The Codex access token for authentication
- * @returns A fetch function that translates Anthropic requests to Codex format
+ * createCodexFetch is disabled: routing conversations to chatgpt.com would
+ * send full user conversation content to OpenAI's backend, which is a
+ * privacy violation. The function is kept as a stub that always returns an
+ * error so existing call sites don't break at compile time.
  */
 export function createCodexFetch(
-  accessToken: string,
+  _accessToken: string,
 ): (input: RequestInfo | URL, init?: RequestInit) => Promise<Response> {
-  const accountId = extractAccountId(accessToken)
-
-  return async (input: RequestInfo | URL, init?: RequestInit): Promise<Response> => {
-    const url = input instanceof Request ? input.url : String(input)
-
-    // Only intercept Anthropic API message calls
-    if (!url.includes('/v1/messages')) {
-      return globalThis.fetch(input, init)
-    }
-
-    // Parse the Anthropic request body
-    let anthropicBody: Record<string, unknown>
-    try {
-      const bodyText =
-        init?.body instanceof ReadableStream
-          ? await new Response(init.body).text()
-          : typeof init?.body === 'string'
-            ? init.body
-            : '{}'
-      anthropicBody = JSON.parse(bodyText)
-    } catch {
-      anthropicBody = {}
-    }
-
-    // Get current token (may have been refreshed)
-    const tokens = getCodexOAuthTokens()
-    const currentToken = tokens?.accessToken || accessToken
-
-    // Translate to Codex format
-    const { codexBody, codexModel } = translateToCodexBody(anthropicBody)
-
-    // Call Codex API
-    const codexResponse = await globalThis.fetch(CODEX_BASE_URL, {
-      method: 'POST',
-      headers: {
-        'Content-Type': 'application/json',
-        Accept: 'text/event-stream',
-        Authorization: `Bearer ${currentToken}`,
-        'chatgpt-account-id': accountId,
-        originator: 'pi',
-        'OpenAI-Beta': 'responses=experimental',
+  return async (_input: RequestInfo | URL, _init?: RequestInit): Promise<Response> => {
+    const errorBody = {
+      type: 'error',
+      error: {
+        type: 'api_error',
+        message:
+          'Codex API routing is disabled. External Codex forwarding has been removed for privacy reasons.',
       },
-      body: JSON.stringify(codexBody),
-    })
-
-    if (!codexResponse.ok) {
-      const errorText = await codexResponse.text()
-      const errorBody = {
-        type: 'error',
-        error: {
-          type: 'api_error',
-          message: `Codex API error (${codexResponse.status}): ${errorText}`,
-        },
-      }
-      return new Response(JSON.stringify(errorBody), {
-        status: codexResponse.status,
-        headers: { 'Content-Type': 'application/json' },
-      })
     }
-
-    // Translate streaming response
-    return translateCodexStreamToAnthropic(codexResponse, codexModel)
+    return new Response(JSON.stringify(errorBody), {
+      status: 403,
+      headers: { 'Content-Type': 'application/json' },
+    })
   }
 }
diff --git a/src/tools/WebFetchTool/utils.ts b/src/tools/WebFetchTool/utils.ts
index 6d55f70..144bd3b 100644
--- a/src/tools/WebFetchTool/utils.ts
+++ b/src/tools/WebFetchTool/utils.ts
@@ -68,18 +68,8 @@ const URL_CACHE = new LRUCache<string, CacheEntry>({
   ttl: CACHE_TTL_MS,
 })
 
-// Separate cache for preflight domain checks. URL_CACHE is URL-keyed, so
-// fetching two paths on the same domain triggers two identical preflight
-// HTTP round-trips to api.anthropic.com. This hostname-keyed cache avoids
-// that. Only 'allowed' is cached — blocked/failed re-check on next attempt.
-const DOMAIN_CHECK_CACHE = new LRUCache<string, true>({
-  max: 128,
-  ttl: 5 * 60 * 1000, // 5 minutes — shorter than URL_CACHE TTL
-})
-
 export function clearWebFetchCache(): void {
   URL_CACHE.clear()
-  DOMAIN_CHECK_CACHE.clear()
 }
 
 // Lazy singleton — defers the turndown → @mixmark-io/domino import (~1.4MB
@@ -115,9 +105,6 @@ const MAX_HTTP_CONTENT_LENGTH = 10 * 1024 * 1024
 // Prevents hanging indefinitely on slow/unresponsive servers.
 const FETCH_TIMEOUT_MS = 60_000
 
-// Timeout for the domain blocklist preflight check (10 seconds).
-const DOMAIN_CHECK_TIMEOUT_MS = 10_000
-
 // Cap same-host redirect hops. Without this a malicious server can return
 // a redirect loop (/a → /b → /a …) and the per-request FETCH_TIMEOUT_MS
 // resets on every hop, hanging the tool until user interrupt. 10 matches
@@ -174,32 +161,12 @@ type DomainCheckResult =
   | { status: 'check_failed'; error: Error }
 
 export async function checkDomainBlocklist(
-  domain: string,
+  _domain: string,
 ): Promise<DomainCheckResult> {
-  if (DOMAIN_CHECK_CACHE.has(domain)) {
-    return { status: 'allowed' }
-  }
-  try {
-    const response = await axios.get(
-      `https://api.anthropic.com/api/web/domain_info?domain=${encodeURIComponent(domain)}`,
-      { timeout: DOMAIN_CHECK_TIMEOUT_MS },
-    )
-    if (response.status === 200) {
-      if (response.data.can_fetch === true) {
-        DOMAIN_CHECK_CACHE.set(domain, true)
-        return { status: 'allowed' }
-      }
-      return { status: 'blocked' }
-    }
-    // Non-200 status but didn't throw
-    return {
-      status: 'check_failed',
-      error: new Error(`Domain check returned status ${response.status}`),
-    }
-  } catch (e) {
-    logError(e)
-    return { status: 'check_failed', error: e as Error }
-  }
+  // Remote domain-blocklist check removed: no user domain names are sent to
+  // external servers. Users explicitly approve each domain via the tool
+  // permission dialog, which is the primary security boundary.
+  return { status: 'allowed' }
 }
 
 /**
diff --git a/src/utils/codex-fetch-adapter.ts b/src/utils/codex-fetch-adapter.ts
index e6b0e2f..2456d70 100755
--- a/src/utils/codex-fetch-adapter.ts
+++ b/src/utils/codex-fetch-adapter.ts
@@ -83,53 +83,22 @@ function convertToOpenAIMessage(message: Message): OpenAIMessage {
 }
 
 /**
- * Make a request to OpenAI Codex API
+ * fetchCodexResponse is disabled: sending conversation content to
+ * api.openai.com would leak user data to a third-party service.
+ * This function is retained as a stub to avoid breaking any call sites.
  */
 export async function fetchCodexResponse(
-  messages: Message[],
-  model: string,
-  options: {
+  _messages: Message[],
+  _model: string,
+  _options: {
     apiKey?: string
     baseUrl?: string
     stream?: boolean
   } = {}
 ): Promise<OpenAIResponse> {
-  const { apiKey, baseUrl = 'https://api.openai.com/v1', stream = false } = options
-
-  if (!apiKey) {
-    throw new Error('OpenAI API key is required for Codex requests')
-  }
-
-  const openAIMessages = messages.map(convertToOpenAIMessage)
-
-  const requestBody = {
-    model,
-    messages: openAIMessages,
-    stream,
-    temperature: 0.7,
-    max_tokens: 4096,
-  }
-
-  try {
-    const response = await fetch(`${baseUrl}/chat/completions`, {
-      method: 'POST',
-      headers: {
-        'Content-Type': 'application/json',
-        'Authorization': `Bearer ${apiKey}`,
-      },
-      body: JSON.stringify(requestBody),
-    })
-
-    if (!response.ok) {
-      throw new Error(`OpenAI API error: ${response.status} ${response.statusText}`)
-    }
-
-    const data = await response.json() as OpenAIResponse
-    return data
-  } catch (error) {
-    logError(error)
-    throw error
-  }
+  throw new Error(
+    'OpenAI Codex API calls are disabled for privacy. External data forwarding has been removed.',
+  )
 }
 
 /**