Fix project isolation: Make loadChatHistory respect active project sessions

- Modified loadChatHistory() to check for active project before fetching all sessions
- When active project exists, use project.sessions instead of fetching from API
- Added detailed console logging to debug session filtering
- This prevents ALL sessions from appearing in every project's sidebar

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.venv/lib/python3.11/site-packages/uvloop/handles/async_.pxd

@@ -0,0 +1,11 @@
+cdef class UVAsync(UVHandle):
+    cdef:
+        method_t callback
+        object ctx
+
+    cdef _init(self, Loop loop, method_t callback, object ctx)
+
+    cdef send(self)
+
+    @staticmethod
+    cdef UVAsync new(Loop loop, method_t callback, object ctx)