chore: add ty + pre-commit hook and repeal even more ruff rules (#9504)

* auto fixes

* auto fix pt2 and transitive deps and undefined var checking locals()

* manual fixes (ignored or letta-code fixed)

* fix circular import

* remove all ignores, add FastAPI rules and Ruff rules

* add ty and precommit

* ruff stuff

* ty check fixes

* ty check fixes pt 2

* error on invalid

letta/jobs/scheduler.py

@@ -94,7 +94,7 @@ async def _try_acquire_lock_and_start_scheduler(server: SyncServer) -> bool:
         if scheduler.running:
             try:
                 scheduler.shutdown(wait=False)
-            except:
+            except Exception:
                 pass
         return False
     finally: