Workspace polish: milestone selector, streaming fix, push fix, log quieting

- WorkspaceTaskPanel: add milestone <select> in task detail (PATCH /api/notes/:id),
  replace delete ✕ with trash can SVG icon
- WorkspaceView: scroll to bottom when streaming ends so final message is visible
  without a page refresh
- ToolCallCard: fix search_notes result count (was reading data.total; tool returns
  data.count), so results no longer show "0 found"
- push.py: switch from deprecated WebPusher().send(vapid_private_key=...) to
  webpush() function (pywebpush 2.x API compatibility)
- app.py: downgrade /api/health, /api/chat/status, and static asset requests from
  INFO to DEBUG in after_request logger to reduce log noise at default log level

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

src/fabledassistant/app.py

@@ -74,7 +74,13 @@ def create_app() -> Quart:
     async def after_request(response):
         duration = time.monotonic() - getattr(g, "request_start", time.monotonic())
         duration_ms = round(duration * 1000, 1)
-        logger.info(
+        # Downgrade noisy high-frequency / static paths to DEBUG
+        _quiet = (
+            request.path in {"/api/health", "/api/chat/status"}
+            or request.path.startswith(("/static/", "/assets/", "/sw.js", "/manifest.json"))
+        )
+        log_fn = logger.debug if _quiet else logger.info
+        log_fn(
             "%s %s %s %.1fms",
             request.method,
             request.path,