feat: 添加 GitHub 集成命令（issue、share、autofix-pr）

- /issue: 通过 gh CLI 创建 GitHub issue，支持标签/指派
- /share: 会话日志分享到 GitHub Gist，支持密钥脱敏
- /autofix-pr: 自动修复 CI 失败的 PR，进度追踪
- launchCommand: 共享命令启动器

Co-Authored-By: glm-5-turbo <zai-org@claude-code-best.win>

src/commands/autofix-pr/index.ts

@@ -0,0 +1,36 @@
+import { feature } from 'bun:bundle'
+import type { Command } from '../../types/command.js'
+
+// `feature()` from bun:bundle can only appear directly inside an if statement
+// or ternary condition (Bun macro restriction). A named function with a
+// `return feature(...)` body is the cleanest way to satisfy this constraint
+// while keeping the Command object readable.
+function isAutofixPrEnabled(): boolean {
+  return feature('AUTOFIX_PR') ? true : false
+}
+
+const autofixPr: Command = {
+  type: 'local-jsx',
+  name: 'autofix-pr',
+  description: 'Auto-fix CI failures on a pull request',
+  // Avoid `<x>` in hints — REPL markdown renderer eats angle-bracketed
+  // tokens as HTML tags. Uppercase placeholders survive intact.
+  argumentHint: 'PR_NUMBER | stop | OWNER/REPO#N',
+  isEnabled: isAutofixPrEnabled,
+  isHidden: false,
+  bridgeSafe: true,
+  getBridgeInvocationError: (args: string) => {
+    const trimmed = args.trim()
+    if (!trimmed) return 'PR number required, e.g. /autofix-pr 386'
+    if (trimmed === 'stop' || trimmed === 'off') return undefined
+    if (/^[1-9]\d{0,9}$/.test(trimmed)) return undefined
+    if (/^[\w.-]+\/[\w.-]+#[1-9]\d{0,9}$/.test(trimmed)) return undefined
+    return 'Invalid args. Use /autofix-pr <pr-number> | stop | <owner>/<repo>#<n>'
+  },
+  load: async () => {
+    const m = await import('./launchAutofixPr.js')
+    return { call: m.callAutofixPr }
+  },
+}
+
+export default autofixPr