kyeongmin
2e3747c5ab
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Multi-MDX Regression (IMP-91) / multi-mdx-regression (push) Failing after 23s
Step 17 salvage dispatcher previously only ran the 3 actions in
_SALVAGE_FAIL_BY_ACTION (cross_zone_redistribute / glue_compression /
font_step_compression). Any next_proposed_action outside that set hit
salvage_terminal_action and dropped through, so visual_check aborted on
layout_adjust / image_fit / frame_internal_fit_candidate cascades.
u1 — router data surface (src/phase_z2_router.py)
- ACTION_BY_CATEGORY: image_aspect_mismatch -> image_fit (new row),
frame_capacity_mismatch -> frame_internal_fit_candidate (was
frame_reselect).
- ACTION_IMPLEMENTATION_STATUS: layout_adjust / image_fit /
frame_internal_fit_candidate flipped MISSING -> IMPLEMENTED with
inline IMP-88 rationale.
u2 — failure_router cascade surface (src/phase_z2_failure_router.py)
- FAILURE_TYPE_DESCRIPTIONS + SALVAGE_FAILURE_TYPE_BY_ACTION extended
with layout_adjust_insufficient / image_fit_insufficient /
frame_internal_fit_insufficient producers.
- NEXT_ACTION_BY_FAILURE + NEXT_ACTION_RATIONALE +
NEXT_ACTION_IMPLEMENTATION_STATUS rows added; cascade chain becomes
font_step_compression -> layout_adjust -> frame_internal_fit_candidate
-> frame_reselect -> details_popup_escalation (#64 terminal).
u3~u5 — planners + apply helpers (src/phase_z2_retry.py)
- plan_layout_adjust / apply_layout_adjust_layout_css with
_layout_swap_priority across 8-preset LAYOUT_PRESETS (preset switch,
no shared-margin shrink per Phase Z spacing direction).
- plan_image_fit / apply_image_fit_css scoped to frame slot using
existing classifier image_event payload (object-fit + max-w/h
derivation).
- plan_frame_internal_fit_candidate / apply_frame_internal_fit_candidate_css
stays inside declared frame contract envelope; emits infeasible path
when envelope is absent.
u6~u7 — pipeline wiring (src/phase_z2_pipeline.py)
- _SALVAGE_FAIL_BY_ACTION extended; _attempt_salvage_chain gains
layout_adjust distinct-render branch + frame_internal_fit_candidate
CSS-overlay branch + loop cap.
- _attempt_step17_image_fit_single_pass added for image_fit entry.
- §11.7.1 / §11.7.2 entry triggers wired; Step 17/18/19 artifact
refresh + note logging closes the salvage_terminal_action fall-through
for the 3 IMP-88 actions.
Tests
- New: test_router_actions_imp88.py (12),
test_failure_router_imp88_cascade.py (12),
test_phase_z2_retry_layout_adjust.py (10),
test_phase_z2_retry_image_fit.py (13),
test_phase_z2_retry_frame_internal_fit.py (13),
test_phase_z2_pipeline_salvage_imp88.py (8),
test_phase_z2_pipeline_step17_entry_imp88.py.
- Regression-aligned: test_phase_z2_failure_router_cascade.py,
test_phase_z2_step17_salvage_chain.py — pre-existing cascade +
salvage-chain assertions updated to the IMPLEMENTED surface.
Out of scope (separate axes / issues)
- details_popup_escalation terminal body (#64).
- frame_reselect MISSING flip (different axis).
- Step 14/16 detection refinement.
- Stage 0 mdx_normalizer integration (locked 2026-05-08).
- AI fallback activation.
Guardrails respected
- Phase Z spacing direction: layout_adjust switches preset; no shared
margin shrink.
- AI isolation contract: planners + dispatcher are deterministic; zero
AI calls in u1~u7.
- No hardcoding: routing + cascade live in router/failure_router data
rows, not inline conditionals.
- IMP-46 (#62) cache carve-out: untouched.
- 1 commit = 1 decision unit: u1~u7 grouped as a single IMP-88 unit.
Stage 4 verification: 7 IMP-88 test files + 2 modified regression files
PASS (Claude #12 + Codex #12 consensus YES). Full-suite sweep deferred to
a separate step.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>