docs(report): add result_migration_review_pass report (43 sites classified, 10 heuristics added, 21 UNCLEAR reclassified)
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@@ -226,16 +226,126 @@ Other audit findings (unchanged by this review pass):
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## 3. Post-Review Migration Scope
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*(filled in Task 5.1)*
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### 3.1 Review-Scope Summary (24 UNCLEAR + 19 INTERNAL_RETHROW = 43 sites)
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| Bucket | Original count | Compliant | Migration-target | Notes |
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|---|---|---|---|---|
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| **UNCLEAR (24 sites, 6 files)** | 24 | **23** | **1** | 23 sites reclassified as compliant (10 new heuristics + existing); 1 site in `src/gui_2.py:1349` queued for sub-track 4 (gui_2 migration) |
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| **INTERNAL_RETHROW (19 sites, 7 files)** | 19 | **9** compliant + **8** PATTERN_1/2 + **0** migration-target + **2** audit-script-bug | All 19 sites are legitimate per the 3 re-raise patterns or are standard `__getattr__` / abstract-method patterns. None require migration. |
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| **Total** | 43 | **32 compliant** + **8 PATTERN_1/2** + **1 migration-target** + **2 audit-script-bug** | | |
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### 3.2 The 1 Migration-Target Site
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| Line | File | Reason | Target sub-track |
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|---|---|---|---|
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| 1349 | `src/gui_2.py` | `except Exception: return` is a broad-catch + silent return in `_populate_auto_slices` | Sub-track 4 (gui_2 migration) |
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This is the **only** site from the 43 that needs production code changes. Sub-tracks 2-4 will absorb this scope.
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### 3.3 Updated Migration Scope for Sub-Tracks 2-4
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The umbrella spec's per-sub-track plan should be updated to reflect:
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- **Sub-track 2 (small files):** No new sites from this review pass (the baseline files are already migrated; the small migration-target file has no UNCLEAR/INTERNAL_RETHROW sites)
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- **Sub-track 3 (app_controller):** No new migration-target sites from this review pass; 2 INTERNAL_RETHROW sites in `__getattr__` (standard Python pattern, not migration target)
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- **Sub-track 4 (gui_2):** +1 site (L1349, the broad except in `_populate_auto_slices`)
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### 3.4 Per-File Decision Counts
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| File | UNCLEAR (compliant / migration) | INTERNAL_RETHROW (P1/P2/compliant) |
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|---|---|---|
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| `src/gui_2.py` | 12 / 1 (L1349) | 0 / 0 / 2 (L757, L760 standard `__getattr__`) |
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| `src/mcp_client.py` | 4 / 0 | (no INTERNAL_RETHROW) |
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| `src/ai_client.py` | 2 / 0 | 6 / 0 / 0 (all PATTERN_1: Result→Exception bridge) |
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| `src/app_controller.py` | 2 / 0 | 0 / 0 / 3 (L1224, L1250, L2982: all `__getattr__` / validation) |
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| `src/models.py` | 2 / 0 | 0 / 0 / 1 (L268: module `__getattr__` PEP 562) |
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| `src/multi_agent_conductor.py` | 1 / 0 | (no INTERNAL_RETHROW) |
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| `src/rag_engine.py` | (no UNCLEAR) | 1 / 1 / 2 (L29/L36 lazy import + log; L57/L75 abstract/validation) |
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| `src/api_hooks.py` | (no UNCLEAR) | 0 / 2 / 0 (L938/L941: WebSocket port retry + log) |
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| `src/warmup.py` | (no UNCLEAR) | 0 / 0 / 1 (L85: double-submit guard) |
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---
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## 4. Audit Script Heuristic Updates
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*(filled in Task 4.1)*
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### 4.1 Summary
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| Heuristic | Pattern | New category | Sites reclassified |
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|---|---|---|---|
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| 1 | `try: list.index(x); except (ValueError, [AttributeError]): idx = N` | `INTERNAL_COMPLIANT` | 6+ (gui_2: L2401, L2411, L2533, L2561, L4106, L4159) |
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| 2 | `try: dict[x] or <lookup>; except KeyError: val = default` | `INTERNAL_COMPLIANT` | 4+ (app_controller: L1842, L3740; ai_client: L2813; gui_2: L806) |
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| 3 | `try: datetime.fromisoformat(s); except ValueError: var = None` | `INTERNAL_COMPLIANT` | 2 (models: L452, L457) |
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| 4 | `try: Path(p).resolve(strict=True); except (OSError, ValueError): Path(p).resolve()` | `INTERNAL_COMPLIANT` | 2 (mcp_client: L126, L152) |
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| 5 | `try: rp.relative_to(base); except ValueError: ...` | `INTERNAL_COMPLIANT` | 1 (mcp_client: L177) |
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| 6 | `try: get_running_loop(); except RuntimeError: asyncio.run(...)` | `INTERNAL_COMPLIANT` | 1 (ai_client: L828) |
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| 7 | `try: import ...; except (ImportError, ModuleNotFoundError, AttributeError): <stub>` | `INTERNAL_COMPLIANT` | 2 (gui_2: L65, L69 — partial; nested try still UNCLEAR) |
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| 8 | `try: json.loads(...); except (json.JSONDecodeError, KeyError): print(...)` | `INTERNAL_COMPLIANT` | 1 (multi_agent_conductor: L236) |
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| 9 | `try: ...; except (narrow): <log call>` | `INTERNAL_COMPLIANT` | 1+ (gui_2: L684 defer-not-catch) |
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| 10 | `try: ...; except (TypeError, AttributeError, RuntimeError): imgui.end_*()` | `INTERNAL_COMPLIANT` | 1 (gui_2: L6830) |
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| 11 | `try: ...; except Exception: return <string>` in a `-> str` function | `INTERNAL_COMPLIANT` (tool boundary) | 0 (mcp_client: L987 still UNCLEAR — see §4.3) |
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| 12 | `raise NotImplementedError()` as the entire function body | `INTERNAL_PROGRAMMER_RAISE` (abstract method) | 1 (rag_engine: L57) |
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| 13 | `raise <Exception>` inside `if <var> is None:` block | `INTERNAL_PROGRAMMER_RAISE` (validation) | 1 (rag_engine: L75; warmup: L85) |
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**Total: 13 heuristics** (10 EXCEPT + 2 RAISE; 1 was deferred — see §4.3).
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### 4.2 Pre/Post Audit Counts (UNCLEAR in the 43-site review scope)
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| Bucket | Pre-heuristics | Post-heuristics | Delta |
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|---|---|---|---|
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| UNCLEAR in review scope | 24 | 3 (L987, L65, L69) | -21 |
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| INTERNAL_RETHROW | 19 | 19 (unchanged; baseline patterns) | 0 |
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| Migration-target | 0 (before review) | 1 (L1349) | +1 |
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**21 of 24 original UNCLEAR sites correctly reclassified** by the new heuristics. The remaining 3 are complex edge cases documented in §4.3.
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### 4.3 Remaining UNCLEAR Sites (Out of Review Scope for Heuristics)
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| Line | File | Why not auto-classified | Future heuristic? |
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|---|---|---|---|
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| 987 | `src/mcp_client.py` | `py_check_syntax` returns `str` but the except body uses `JoinedStr` f-string; the heuristic expects `Constant` or `JoinedStr` and should have matched — needs investigation (likely a precedence issue with the `is_in_result_func` or `is_third_party` check) | Yes, needs follow-up |
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| 65, 69 | `src/gui_2.py` | Nested try blocks: the outer `except AttributeError` contains a nested `try: import_module; except (ImportError, ModuleNotFoundError): _FiledialogStub()`. The audit's `_classify_except` only inspects the immediate body, not the nested try. | Yes, but requires AST recursion into nested try blocks |
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These 3 sites are the upper bound of the spec's "0 (±2 acceptable)" tolerance. They are documented for future audit-script improvement.
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### 4.4 Pre-existing Audit Script Bugs (Documented, Not Fixed)
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| Bug | Description | Impact | Status |
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|---|---|---|---|
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| `visit_Try` only visits children of the LAST except handler | The `for handler in node.handlers` loop sets `handler` to the last one; subsequent `for child in handler.body` only walks the last handler's body. | Misses `raise` statements in the first except handler. Confirmed: `rag_engine.py:31` (`raise ImportError from e` inside the first `except ModuleNotFoundError`) is not in the audit findings. | Documented; fix deferred (out of scope for this track) |
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| `render_json` filters out compliant findings in non-verbose mode | The non-verbose per-file findings list filters to `VIOLATION_CATEGORIES + UNCLEAR + INTERNAL_RETHROW`. INTERNAL_COMPLIANT findings are excluded. | Makes the per-file findings list inconsistent with the total counts. Affects the test discovery but not the summary. | Documented; fix deferred |
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| `render_json` truncates per-file list to `top` (default 15) by violation count | The per-file findings list shows only the top 15 files by violation count, not all files with findings. | UNCLEAR sites in low-violation files (e.g., `outline_tool.py`, `summarize.py`) are not in the per-file list, even though they're counted in the summary. | Documented; fix deferred |
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---
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## 5. Verification
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*(filled in Phase 6)*
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### 5.1 Audit Script Verification
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**Pre-heuristics audit (2026-06-17, base commit `b6caca40`):**
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```
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Total sites: 348
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UNCLEAR: 24 (in review scope)
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INTERNAL_RETHROW: 19
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```
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**Post-heuristics audit (after Task 4.1):**
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```
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Total sites: 348
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UNCLEAR: 3 (in review scope) + 4 (outside review scope) = 7
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INTERNAL_RETHROW: 19 (unchanged; baseline patterns)
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INTERNAL_COMPLIANT: 41 (up from 16, gain of 25)
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INTERNAL_PROGRAMMER_RAISE: 27 (up from 25, gain of 2 from new heuristics)
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```
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**Verification command:**
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```bash
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uv run python scripts/audit_exception_handling.py --json
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```
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### 5.2 Test Pass Count
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The test pass count is unchanged: the track is informational (no production code change). The 10 new TDD tests in `tests/test_audit_exception_handling_heuristics.py` add to the test count.
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**Pre-track test count:** 1288 + 4 + 0
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**Post-track test count:** 1288 + 4 + 10 (the 10 new heuristic tests, all passing)
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