Initial commit: GitHub Release Monitor CLI tool

CLI tool that tracks GitHub releases or tags from user-defined repositories
and exposes them as a subscribable RSS 2.0 feed.

Features:
- Track releases or tags per repository
- SQLite storage with automatic deduplication
- RSS 2.0 feed with markdown-stripped release notes
- Built-in HTTP server for local feed access
- Rate-limit-aware GitHub API client
- 64 passing tests

src/server.py

@@ -0,0 +1,66 @@
+"""HTTP server for serving the RSS feed."""
+
+from http.server import BaseHTTPRequestHandler
+from urllib.parse import urlparse
+
+from src.db import get_connection
+from src.rss import generate_feed, generate_index_html
+
+
+def create_handler(db_path: str):
+    """Factory that returns an HTTP request handler class bound to a DB path."""
+
+    class FeedHandler(BaseHTTPRequestHandler):
+        def do_GET(self):
+            parsed = urlparse(self.path)
+            path = parsed.path.rstrip("/") or "/"
+
+            if path == "/feed.xml":
+                self._serve_feed()
+            elif path == "/health":
+                self._serve_health()
+            elif path == "/":
+                self._serve_index()
+            else:
+                self.send_response(404)
+                self.send_header("Content-Type", "text/plain")
+                self.end_headers()
+                self.wfile.write(b"Not Found")
+
+        def _serve_feed(self):
+            conn = get_connection(db_path)
+            try:
+                from src.db import get_all_entries
+                entries = get_all_entries(conn)
+                feed_xml = generate_feed(entries, self._base_url())
+            finally:
+                conn.close()
+
+            self.send_response(200)
+            self.send_header("Content-Type", "application/rss+xml; charset=utf-8")
+            self.end_headers()
+            self.wfile.write(feed_xml.encode("utf-8"))
+
+        def _serve_index(self):
+            html = generate_index_html(self._base_url())
+            self.send_response(200)
+            self.send_header("Content-Type", "text/html; charset=utf-8")
+            self.end_headers()
+            self.wfile.write(html.encode("utf-8"))
+
+        def _serve_health(self):
+            self.send_response(200)
+            self.send_header("Content-Type", "text/plain")
+            self.end_headers()
+            self.wfile.write(b"OK")
+
+        def _base_url(self) -> str:
+            host = self.server.server_address[0]
+            port = self.server.server_address[1]
+            return f"http://{host}:{port}"
+
+        def log_message(self, format, *args):
+            """Suppress default request logging."""
+            pass
+
+    return FeedHandler