refactor: remove beta diagnostics collection and reporting (#2616)

src/langbot/pkg/core/app.py

@@ -642,10 +642,6 @@ class Application:
             if self.telemetry is not None:
                 with contextlib.suppress(Exception):
                     await self.telemetry.shutdown()
-            diagnostics_manager = getattr(self, 'diagnostics', None)
-            if diagnostics_manager is not None:
-                with contextlib.suppress(Exception):
-                    await diagnostics_manager.shutdown()
             if self.vector_db_mgr is not None:
                 with contextlib.suppress(Exception):
                     await self.vector_db_mgr.shutdown()

src/langbot/pkg/core/boot.py

@@ -7,7 +7,6 @@ import os
 
 from . import app
 from . import stage
-from ..telemetry import diagnostics
 from ..utils import constants, importutil
 
 # Import startup stage implementation to register
@@ -40,33 +39,7 @@ async def make_app(loop: asyncio.AbstractEventLoop) -> app.Application:
             stage_cls = stage.preregistered_stages[stage_name]
             stage_inst = stage_cls()
 
-            if stage_name == 'GenKeysStage':
-                # Optional diagnostics must not make startup depend on package
-                # metadata, session markers, or its background transport.
-                ap.diagnostics = None
-                space_config = ap.instance_config.data.get('space', {})
-                if not space_config.get('disable_telemetry', False) and not space_config.get(
-                    'disable_beta_diagnostics', False
-                ):
-                    manager = None
-                    try:
-                        manager = diagnostics.DiagnosticsManager(ap, marker_path='data/labels/beta_diagnostics_session')
-                        await manager.start_session()
-                        manager.start()
-                        ap.diagnostics = manager
-                    except BaseException as exc:
-                        if manager is not None:
-                            # Cleanup faults cannot replace the startup fault.
-                            try:
-                                await manager.shutdown(drain_timeout=0)
-                            except asyncio.CancelledError:
-                                if not isinstance(exc, asyncio.CancelledError):
-                                    raise
-                            except Exception:
-                                pass
-                        if not isinstance(exc, Exception):
-                            raise
-            await diagnostics.observe('lifecycle', 'startup.' + stage_name, source='startup', ap=ap)(stage_inst.run)(ap)
+            await stage_inst.run(ap)
 
         await ap.initialize()
     except BaseException: