feat(fable-mcp): add RSS feed management tools (list/add/remove)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

fable-mcp/fable_mcp/tools/briefing.py

@@ -0,0 +1,32 @@
+"""MCP tools for Fable RSS feed management."""
+from __future__ import annotations
+
+from typing import Any
+
+from fable_mcp.client import FableClient
+
+
+async def list_rss_feeds(client: FableClient) -> dict[str, Any]:
+    """List the user's RSS feeds."""
+    return await client.get("/api/briefing/feeds")
+
+
+async def add_rss_feed(
+    client: FableClient,
+    *,
+    url: str,
+    title: str | None = None,
+    category: str | None = None,
+) -> dict[str, Any]:
+    """Add a new RSS feed. Title is optional — auto-populated from feed metadata."""
+    payload: dict[str, Any] = {"url": url}
+    if title:
+        payload["title"] = title
+    if category:
+        payload["category"] = category
+    return await client.post("/api/briefing/feeds", json=payload)
+
+
+async def remove_rss_feed(client: FableClient, *, feed_id: int) -> dict[str, Any]:
+    """Remove an RSS feed by ID."""
+    return await client.delete(f"/api/briefing/feeds/{feed_id}")