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/_shared/launchCommand.ts

@@ -0,0 +1,122 @@
+/**
+ * launchCommand — generic factory for local-jsx command implementations.
+ *
+ * Encapsulates the repeated boilerplate across the 6 command launch files:
+ *   - args parsing + invalid-args handling
+ *   - dispatch error capture + onDone error message
+ *   - errorView rendering
+ *   - React.createElement call for the happy-path View
+ *
+ * Usage (H2 finding — cuts boilerplate ~50%):
+ *
+ *   export const callMyCmd: LocalJSXCommandCall = launchCommand<MyParsed, MyViewProps>({
+ *     commandName: 'my-cmd',
+ *     parseArgs: parseMyArgs,
+ *     dispatch: async (parsed, onDone, context) => { ... return viewProps },
+ *     View: MyCmdView,
+ *     errorView: (msg) => React.createElement(MyCmdView, { mode: 'error', message: msg }),
+ *   })
+ */
+
+import React from 'react'
+import type {
+  LocalJSXCommandCall,
+  LocalJSXCommandOnDone,
+} from '../../types/command.js'
+import type { ToolUseContext } from '../../Tool.js'
+
+/** Shape returned by parseArgs when args are invalid. */
+export interface InvalidParsed {
+  action: 'invalid'
+  reason: string
+}
+
+export interface LaunchCommandOptions<TParsed, TViewProps> {
+  /**
+   * Command name used in error messages (e.g. "local-vault").
+   * Appears in the onDone text when dispatch throws.
+   */
+  commandName: string
+
+  /**
+   * Parse raw args string into a typed action union or an invalid sentinel.
+   * Must return `{ action: 'invalid'; reason: string }` when args are bad.
+   */
+  parseArgs: (rawArgs: string) => TParsed | InvalidParsed
+
+  /**
+   * Perform the command operation.
+   * - Call onDone with the user-visible summary text.
+   * - Return the View props to render, or null to render nothing.
+   * - Throw to trigger the error path.
+   */
+  dispatch: (
+    parsed: TParsed,
+    onDone: LocalJSXCommandOnDone,
+    context: ToolUseContext,
+  ) => Promise<TViewProps | null>
+
+  /**
+   * React component rendered with the props returned by dispatch.
+   */
+  View: React.FC<TViewProps>
+
+  /**
+   * Render an error node when parseArgs returns invalid or dispatch throws.
+   * Receives the human-readable error message string.
+   */
+  errorView: (message: string) => React.ReactNode
+
+  /**
+   * Optional hook called when dispatch throws, before the error is surfaced.
+   * Useful for analytics logEvent calls.
+   * Default: no-op.
+   */
+  onDispatchError?: (err: unknown) => void
+}
+
+/**
+ * Returns a LocalJSXCommandCall that wraps the provided parse / dispatch / View
+ * triple with uniform error handling.
+ */
+export function launchCommand<TParsed, TViewProps>(
+  opts: LaunchCommandOptions<TParsed, TViewProps>,
+): LocalJSXCommandCall {
+  return async (
+    onDone: LocalJSXCommandOnDone,
+    context: ToolUseContext,
+    args: string,
+  ): Promise<React.ReactNode> => {
+    // ── Parse args ────────────────────────────────────────────────────────────
+    const parsed = opts.parseArgs(args ?? '')
+
+    if (isInvalid(parsed)) {
+      onDone(`Invalid args: ${parsed.reason}`, { display: 'system' })
+      return opts.errorView(parsed.reason)
+    }
+
+    // ── Dispatch ──────────────────────────────────────────────────────────────
+    try {
+      const viewProps = await opts.dispatch(parsed as TParsed, onDone, context)
+      if (viewProps === null) return null
+      return React.createElement(
+        opts.View as React.ComponentType<object>,
+        viewProps as object,
+      )
+    } catch (err: unknown) {
+      const msg = err instanceof Error ? err.message : String(err)
+      opts.onDispatchError?.(err)
+      onDone(`${opts.commandName} failed: ${msg}`, { display: 'system' })
+      return opts.errorView(msg)
+    }
+  }
+}
+
+function isInvalid(parsed: unknown): parsed is InvalidParsed {
+  return (
+    typeof parsed === 'object' &&
+    parsed !== null &&
+    'action' in parsed &&
+    (parsed as InvalidParsed).action === 'invalid'
+  )
+}