feat: LLM 解耦 bot、RSS 外置与内容过滤

daily 自建 Cursor bridge；DAILY_LLM_PROVIDER 控制后端；config/feeds.yaml 与 sensitive_words 可配置。

Co-authored-by: Cursor <cursoragent@cursor.com>

daily/cursor_bridge.py

@@ -0,0 +1,142 @@
+"""Windows 兼容的 Cursor SDK bridge（daily 包自用，不依赖 bot/）。"""
+
+from __future__ import annotations
+
+import codecs
+import json
+import logging
+import os
+import subprocess
+import threading
+import time
+from pathlib import Path
+from typing import Any, Mapping
+
+from daily.config import ROOT, env
+
+logger = logging.getLogger(__name__)
+
+READY_LINE_PREFIX = "cursor-sdk-bridge ready "
+_bridge_lock = threading.Lock()
+_bridge_process: subprocess.Popen[bytes] | None = None
+
+
+def cursor_cwd() -> str:
+    return env("DAILY_CURSOR_CWD") or env("CURSOR_CWD") or str(ROOT)
+
+
+def _parse_discovery_line(line: str) -> Mapping[str, Any] | None:
+    if not line.startswith(READY_LINE_PREFIX):
+        return None
+    payload = line[len(READY_LINE_PREFIX) :].strip()
+    loaded = json.loads(payload)
+    if not isinstance(loaded, dict):
+        raise RuntimeError("Bridge discovery payload must be an object")
+    return loaded
+
+
+def _read_discovery_polling(process: subprocess.Popen[bytes], timeout: float = 60) -> Mapping[str, Any]:
+    if process.stderr is None:
+        raise RuntimeError("Bridge stderr unavailable")
+
+    fd = process.stderr.fileno()
+    was_blocking = os.get_blocking(fd)
+    os.set_blocking(fd, False)
+    decoder = codecs.getincrementaldecoder("utf-8")(errors="replace")
+    pending = ""
+    stderr_lines: list[str] = []
+    deadline = time.monotonic() + timeout
+
+    try:
+        while time.monotonic() < deadline:
+            try:
+                chunk = os.read(fd, 8192)
+            except BlockingIOError:
+                chunk = b""
+
+            if chunk:
+                pending += decoder.decode(chunk)
+                while "\n" in pending:
+                    line, pending = pending.split("\n", 1)
+                    stderr_lines.append(line)
+                    discovery = _parse_discovery_line(line)
+                    if discovery is not None:
+                        return discovery
+            else:
+                code = process.poll()
+                if code is not None:
+                    pending += decoder.decode(b"", final=True)
+                    if pending.strip():
+                        stderr_lines.append(pending.strip())
+                    joined = "\n".join(stderr_lines)[-2000:]
+                    raise RuntimeError(
+                        f"Bridge 启动失败 exit={code}: {joined or '无 stderr 输出'}"
+                    )
+                time.sleep(0.05)
+    finally:
+        os.set_blocking(fd, was_blocking)
+
+    raise RuntimeError("等待 Cursor bridge 就绪超时")
+
+
+def _auth_token_from_discovery(discovery: Mapping[str, Any]) -> str:
+    token = str(discovery.get("authToken") or "").strip()
+    if token:
+        return token
+    token_file = discovery.get("authTokenFile")
+    if token_file:
+        return Path(str(token_file)).read_text(encoding="utf-8").strip()
+    raise RuntimeError("Bridge discovery 缺少 auth token")
+
+
+def warm_cursor_bridge(force: bool = False) -> None:
+    """启动 cursor-sdk-bridge 并写入 CURSOR_SDK_BRIDGE_* 环境变量。"""
+    global _bridge_process
+
+    with _bridge_lock:
+        if (
+            not force
+            and _bridge_process is not None
+            and _bridge_process.poll() is None
+            and os.environ.get("CURSOR_SDK_BRIDGE_URL")
+            and os.environ.get("CURSOR_SDK_BRIDGE_TOKEN")
+        ):
+            return
+
+        if _bridge_process is not None and _bridge_process.poll() is None:
+            _bridge_process.terminate()
+            try:
+                _bridge_process.wait(timeout=5)
+            except subprocess.TimeoutExpired:
+                _bridge_process.kill()
+
+        from cursor_sdk._vendor import resolve_bridge_path
+
+        cwd = cursor_cwd()
+        os.environ["CURSOR_CWD"] = cwd
+        argv = [resolve_bridge_path(), "--workspace", cwd]
+        logger.info("启动 Cursor bridge workspace=%s", cwd)
+
+        process = subprocess.Popen(
+            argv,
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.PIPE,
+        )
+        try:
+            discovery = _read_discovery_polling(process)
+        except Exception:
+            process.kill()
+            process.wait(timeout=5)
+            raise
+
+        url = str(discovery.get("url") or "").strip()
+        if not url:
+            host = str(discovery.get("host") or "127.0.0.1")
+            port = discovery.get("port")
+            url = f"http://{host}:{port}"
+
+        token = _auth_token_from_discovery(discovery)
+        os.environ["CURSOR_SDK_BRIDGE_URL"] = url
+        os.environ["CURSOR_SDK_BRIDGE_TOKEN"] = token
+        _bridge_process = process
+        logger.info("Cursor bridge 就绪: %s", url)