fix(twitter): migrate from deleted bird CLI to twitter-cli (#231)

steipete/bird repo has been deleted (404). Migrates to twitter-cli
(public-clis/twitter-cli, 2137 stars, Python, actively maintained).

Changes:
- twitter.py: check() now detects `twitter` binary, parses `twitter status` YAML
- cli.py: install via pipx/uv instead of npm, test via `twitter status`
- cli.py: remove bird/xfetch credential sync, use TWITTER_AUTH_TOKEN/CT0 env
- skill references: bird commands → twitter-cli commands
- tests: 5 new tests covering all check() paths

104 tests passing.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

agent_reach/channels/twitter.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-"""Twitter/X — check if bird CLI (@steipete/bird) is available."""
+"""Twitter/X — check if twitter-cli (public-clis/twitter-cli) is available."""
 
 import shutil
 import subprocess
@@ -9,7 +9,7 @@ from .base import Channel
 class TwitterChannel(Channel):
     name = "twitter"
     description = "Twitter/X 推文"
-    backends = ["bird CLI"]
+    backends = ["twitter-cli"]
     tier = 1
 
     def can_handle(self, url: str) -> bool:
@@ -18,33 +18,36 @@ class TwitterChannel(Channel):
         return "x.com" in d or "twitter.com" in d
 
     def check(self, config=None):
-        bird = shutil.which("bird") or shutil.which("birdx")
-        if not bird:
+        twitter = shutil.which("twitter")
+        if not twitter:
             return "warn", (
-                "bird CLI 未安装。搜索可通过 Exa 替代。安装：\n"
-                "  npm install -g @steipete/bird"
+                "twitter-cli 未安装。安装方式：\n"
+                "  pipx install twitter-cli\n"
+                "或：\n"
+                "  uv tool install twitter-cli"
             )
 
         try:
             r = subprocess.run(
-                [bird, "check"], capture_output=True,
+                [twitter, "status"], capture_output=True,
                 encoding="utf-8", errors="replace", timeout=10
             )
             output = (r.stdout or "") + (r.stderr or "")
-            if r.returncode == 0:
-                return "ok", "完整可用（读取、搜索推文，含长文/X Article）"
-            # bird check returns 1 when auth is missing
-            if "Missing credentials" in output or "missing" in output.lower():
+            if r.returncode == 0 and "ok: true" in output:
+                return "ok", (
+                    "完整可用（搜索、读推文、时间线、长文/Article、"
+                    "用户查询、Thread）"
+                )
+            if "not_authenticated" in output:
                 return "warn", (
-                    "bird CLI 已安装但未配置认证。设置环境变量：\n"
-                    "  export AUTH_TOKEN=\"xxx\"\n"
-                    "  export CT0=\"yyy\"\n"
-                    "或运行：\n"
-                    "  agent-reach configure twitter-cookies \"auth_token=xxx; ct0=yyy\""
+                    "twitter-cli 已安装但未认证。设置方式：\n"
+                    "  export TWITTER_AUTH_TOKEN=\"xxx\"\n"
+                    "  export TWITTER_CT0=\"yyy\"\n"
+                    "或确保已在浏览器中登录 x.com"
                 )
             return "warn", (
-                "bird CLI 已安装但认证检查失败。运行：\n"
-                "  agent-reach configure twitter-cookies \"auth_token=xxx; ct0=yyy\""
+                "twitter-cli 已安装但认证检查失败。运行：\n"
+                "  twitter -v status 查看详细信息"
             )
         except Exception:
-            return "warn", "bird CLI 已安装但连接失败"
+            return "warn", "twitter-cli 已安装但连接失败"