Pre-existing failures unrelated to the de-cruft work; fix tests/production:
1. test_save_preset_project_no_root — production src/presets.py:save_preset
now raises ValueError when project_root is None and scope='project'
(was trying to write to '.' which the test_sandbox blocks).
2. test_handle_request_event_appends_definitions — production
_symbol_resolution_result now normalizes dict file_items to .path
access (was assuming FileItem dataclass).
3. test_rejection_prevents_dispatch — test now expects '' (empty string
sentinel) for rejected dispatch. Did NOT change production signature
to Optional[str] (which is banned per error_handling.md). Production
still returns str per its signature; '' is the canonical sentinel
for 'no dispatch happened'.
4. test_keyboard_shortcut_check_in_gui_func — test now patches
src.gui_2.get_bg (the current function) instead of the deleted
src.gui_2.bg_shader module. BackgroundShader class was moved from
src/bg_shader.py into src/gui_2.py in module_taxonomy_refactor Phase 1.1.
After this commit:
- tier-1-unit-comms: 0 failures
- tier-1-unit-core: 0 failures (of 1418 tests)
- tier-1-unit-mma: 0 failures
- tier-1-unit-gui: 0 failures
- tier-1-unit-headless: 0 failures
- tier-2-mock-app-comms: 0 failures
- tier-2-mock-app-core: 0 failures
- tier-2-mock-app-gui: 0 failures
- tier-2-mock-app-mma: 0 failures
Remaining: tier-2-mock-app-headless (3 FastAPI response shape mismatches)
and tier-3-live-gui (test_auto_switch_sim).
hot_reloader.py (1 site - module reload with broad except):
- reload() returns Result[bool] now. The migration catches the
broad Exception, captures it as ErrorInfo with the traceback in
last_error, and returns Result(data=False, errors=[...]).
- reload_all() returns Result[bool]; aggregates per-module errors.
- The class still tracks last_error and is_error_state for
backwards-compat with any caller reading the class attributes.
warmup.py (5 sites):
- L139 (on_complete callback fire): was except ...: pass.
Now logs to sys.stderr with the exception.
- L215 (_record_success callback fire): same.
- L249 (_record_failure callback fire): same.
- L276 (_log_canary stderr.write): was except OSError: pass.
Now logs the OSError itself.
- L300 (_log_summary stderr.write): same.
startup_profiler.py (1 site - context manager):
- phase() is a context manager (yields); can't return Result.
The except inside the finally block now logs the OSError.
Tests updated for hot_reloader to check result.ok and result.data.
Tests verified:
- tests/test_hot_reloader.py (9 tests) PASS
- tests/test_hot_reload_integration.py (13 tests) PASS
- tests/test_warmup.py (10 tests) PASS
- tests/test_warmup_canaries.py (18 tests) PASS
ed