fix: 将 Gitea 配置迁移到 ~/.gitea/config.yaml 多账号配置体系

- 新增 _get_gitea_config.py 从 YAML 读取 URL/repo/token
- _common.sh 改为通过 eval python 脚本加载配置
- GITEA_CICD_SETUP.md / DEV_AGENT.md / QE_AGENT.md 更新文档
- CI 工作流改用 ${{ gitea.server_url }} / ${{ gitea.repository }}

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

scripts/agent_poller.py

@@ -21,19 +21,35 @@ import sys
 import urllib.request
 import urllib.error
 
-GITEA_URL = os.environ.get("GITEA_URL", "https://git.zywl.me")
-GITEA_REPO = os.environ.get("GITEA_REPO", "pzhang_zywl/document_analyzer")
-GITEA_TOKEN = os.environ.get("GITEA_API_TOKEN", "")
-DEV_AGENT_ID = os.environ.get("DEV_AGENT_ID", "da-01")
-QE_AGENT_ID = os.environ.get("QE_AGENT_ID", "")
+def _load_gitea_config():
+    """Load Gitea URL, repo, and token from ~/.gitea/config.yaml or env vars."""
+    config_path = os.path.expanduser("~/.gitea/config.yaml")
+    if os.path.exists(config_path):
+        import yaml  # requires pyyaml
+        with open(config_path) as f:
+            config = yaml.safe_load(f) or {}
+        user = os.environ.get("GITEA_USER")
+        if not user:
+            print("Error: GITEA_USER is not set (required for ~/.gitea/config.yaml).",
+                  file=sys.stderr)
+            sys.exit(1)
+        profile = config.get(user)
+        if not profile:
+            print(f"Error: user '{user}' not found in {config_path}", file=sys.stderr)
+            sys.exit(1)
+        return (profile.get("url", ""), profile.get("repo", ""),
+                profile.get("token", ""))
+    # Fallback: plain env vars (for CI / backwards compat)
+    return (os.environ.get("GITEA_URL", ""),
+            os.environ.get("GITEA_REPO", ""),
+            os.environ.get("GITEA_API_TOKEN", ""))
+
+
+GITEA_URL, GITEA_REPO, GITEA_TOKEN = _load_gitea_config()
+GITEA_USER = os.environ.get("GITEA_USER", "")
 
 # Signature appended to all comments / PR bodies
-if QE_AGENT_ID:
-    AGENT_ID = QE_AGENT_ID
-    AGENT_SIG = f"\n\n---\n[qe-agent: {QE_AGENT_ID}]"
-else:
-    AGENT_ID = DEV_AGENT_ID
-    AGENT_SIG = f"\n\n---\n[{DEV_AGENT_ID}]"
+AGENT_SIG = f"\n\n---\n[{GITEA_USER}]" if GITEA_USER else ""
 
 BASE = f"{GITEA_URL}/api/v1/repos/{GITEA_REPO}"