TIER-3 READ AGENTS.md + conductor/workflow.md + conductor/code_styleguides/error_handling.md + the 4 source files + 3 test files before this commit.
The code_path_audit_phase_2_20260624 track (Tier 2) shipped 11 audit
fixes (4 NG1 + 7 NG2) but used a heuristic bypass for 4 of the NG2
wrappers: legacy T | None functions that exist only to maintain test
patcher compatibility. Per the review at
docs/reports/REVIEW_TIER2_code_path_audit_phase_2_20260624.md Finding 8,
this track eliminates the legacy wrappers properly.
11 wrappers eliminated (8 main + 3 _legacy_compat inner):
- src/ai_client.py: get_current_tier (1 src + 1 test consumer)
- src/ai_client.py: _gemini_tool_declaration + _legacy_compat (2 test consumers)
- src/ai_client.py: run_tier4_patch_callback + _legacy_compat (was 0 direct callers
but had 2 callback references in app_controller/multi_agent_conductor;
callback contract migrated to Callable[[str, str], Result[str]] instead of
preserving an Optional[str] adapter)
- src/mcp_client.py: _get_symbol_node + _legacy_compat (8 in-file consumers)
- src/mcp_client.py: find_in_scope (nested inside _get_symbol_node_result;
private impl detail, audit doesn't catch T | None, left as-is)
- src/external_editor.py: launch_diff (1 src + 3 test + 1 live_gui test consumer)
- src/external_editor.py: launch_editor (no consumers; deleted)
- src/session_logger.py: log_tool_output (2 src + 3 test consumers)
- src/project_manager.py: parse_ts (no consumers; deleted)
For each consumer: replace legacy_fn(args) with legacy_fn_result(args).data.
For T | None checks: replace if x is None: with if not result.ok: or
if not result.ok or not isinstance(result.data, ...) (depending on pattern).
For run_tier4_patch_callback specifically: the wrapper was a callback adapter
(not a backward-compat shim) and had 2 callback references as consumers.
Rather than keep the adapter (which would re-introduce the Optional[str]
return that the strict audit catches), the patch_callback contract was migrated
from Callable[[str, str], Optional[str]] to Callable[[str, str], Result[str]]
in shell_runner.py + app_controller.py + 9 _send_<vendor>_result signatures
in ai_client.py. This propagates the Result[str] through the callback and
lets shell_runner unwrap with if r.ok and r.data instead of if patch_text.
Verification:
- audit_optional_in_3_files --strict: 0 return-type Optional[T] (down from 1)
- audit_exception_handling --strict: 0 violations (unchanged)
- audit_legacy_wrappers: 0 legacy wrappers (unchanged)
- 15 affected test files: 168 tests pass
- 8 mcp_client/structural/baseline test files: 55 tests pass
- 3 session/gui test files: 7 tests pass
- 0 return-type Optional[T] in src/ai_client.py (was 1: run_tier4_patch_callback)
aggregate.py (1 site):
- compute_file_stats returns Result[dict[str, int]]. The 2 SILENT_SWALLOW
sites (ast.parse + open) now append to errors list. Callers in
gui_2.py updated to extract result.data from the cache.
api_hooks.py (1 site):
- WebSocketServer._handler - was 2 except ...: pass (JSONDecodeError +
ConnectionClosed). Now logs warnings instead of silently swallowing.
The audit's heuristic #19 (catch + log) classifies this as
INTERNAL_COMPLIANT.
context_presets.py (1 site):
- ContextPresetManager.load_all returns Result[Dict[str, ContextPreset]].
Caller in app_controller.py (load_context_preset) updated to check
result.ok.
external_editor.py (1 site):
- _find_vscode_in_registry returns Result[Optional[str]]. The 1
SILENT_SWALLOW site (subprocess.run) now appends to errors.
Caller in ExternalEditorLauncher._resolve_vscode updated to extract
result.data.
Tests updated to check result.ok and use result.data.
Eliminates 22 call sites that bypassed the AppController state owner
and read/wrote config.toml directly. AppController is now the single
source of truth for self.config; gui_2.py, commands.py, etc. go
through controller.save_config() / controller.load_config().
Production changes:
- src/models.py: rename load_config -> _load_config_from_disk,
save_config -> _save_config_to_disk (private I/O primitives)
- src/app_controller.py: add public load_config()/save_config() methods
that own the state. Update 3 internal call sites and 3 ConductorEngine
call sites to pass max_workers from self.config
- src/multi_agent_conductor.py: ConductorEngine.__init__ now takes
max_workers as a parameter (caller responsibility, not I/O primitive)
- src/external_editor.py: get_default_launcher() takes config as a
parameter; gui_2.py:1311,4776 pass app.config
- src/gui_2.py: 17 sites of models.save_config(X.config) replaced with
X.save_config() (delegates via __getattr__ to controller)
- src/commands.py: save_all() uses app.save_config()
Test changes (route through controller, not I/O primitive):
- tests/conftest.py: mock_app and app_instance fixtures now patch
AppController.load_config/save_config instead of models I/O primitives
- 18 other test files: patches renamed from models._save_config_to_disk
to AppController.save_config (and same for load_config)
- tests/test_app_controller_mcp.py: use SLOP_CONFIG env var instead of
patching removed CONFIG_PATH module constant
- tests/test_parallel_execution.py: pass max_workers=2 explicitly to
ConductorEngine (caller no longer reads config)
- tests/test_gui_paths.py: add save_config=MagicMock() to MockApp;
assert on controller method, not I/O primitive
- tests/test_models_no_top_level_tomli_w.py: still calls private
_save_config_to_disk directly (the only allowed exception; tests
the lazy-load behavior of the primitive itself)
New files:
- scripts/audit_no_models_config_io.py: enforces the rule (--strict,
--json modes; AST-based docstring detection to avoid false positives)
- conductor/code_styleguides/config_state_owner.md: documents the rule
Verification:
- 67 targeted tests pass
- scripts/audit_no_models_config_io.py --strict returns 0
This is the architectural cleanup that surfaced during the
audit_architectural_cheats_20260607 review. Closes the smoke-gun
CONFIG_PATH module constant (already done in 0c7ebf22) AND the
free-function models.load_config/save_config smell.
[conductor(checkpoint): config-iO-refactor-20260607]
- Moved External Editor panel from AI Settings to External Tools tab in Operations Hub
- Fixed default_editor lookup to use nested [tools.default_editor] structure
- Added example entries for vscode, notepadpp, 10xEditor, rider, sublime
- Improved panel UI with section header and clearer formatting
- Add TextEditorConfig and ExternalEditorConfig dataclasses to models.py
- Create src/external_editor.py with ExternalEditorLauncher class
- Add tests for configuration and launcher functionality
- Support for config.toml [tools.text_editors] and manual_slop.toml default_editor
ed