kyeongmin 52ccb7fc8b fix(IMP-06): Stage 4 blocker-fix — render_records + plan-aware traces ...

Three Codex #13 blockers in a single coherent commit.

Blocker 1 (units None hazard) — drop None placeholders from `units` list.
Replace with a separate `render_records` layer built AFTER frame_overrides
apply. units = canonical renderable list (list[CompositionUnit] only);
render_records = canonical per-position view including empty / collision-
skipped / cli_override entries. Downstream loops (Step 6 print, frame_
overrides, zones_data/debug_zones, Step 9 application_plan, compute_slide_
status covered loop) no longer need None guards.

Blocker 2 (no integration test) — add end-to-end pipeline integration
test: `--override-section-assignment top=03-2` on sample 03 MDX produces
zones_data[top].source_section_ids = ['03-2'], debug_zones[top].assignment
_source = 'cli_override', debug_zones[bottom].v4_template_id = '__empty__'
(override_collision whole-skip), step20 filtered_section_ids contains
'03-1', and filtered_section_reasons carries a section_assignment_override
_uncovered entry. Proves the render path — not only comp_debug — reflects
the CLI override.

Blocker 3 (Step 9/20 not plan-aware) — surface plan-aware additive fields
in both render-path debug_zones/zones_data and Step 9 application_plan
units: position, assignment_source, section_assignment_override,
replaced_auto_unit, skipped_collided_auto_units, uncovered_section_ids,
skipped_reason. compute_slide_status appends Codex #10 Catch O list-shaped
filtered_section_reasons entries for override-uncovered sections and
folds them into filtered_section_ids so full_coverage is re-evaluated
post-override.

Exact-id-only collision semantics enforced (Codex #14/#15/#16/#17): S3
and S3-1 are distinct ids; no prefix hierarchy, no parent cascade. Three
new section-id invariant tests added (parent-like vs child-like, exact
duplicate collision detected, distinct ids coexist).

Test : 24 pytest pass (9 helper + 9 case + 3 invariant + 1 case 9b +
1 integration + 1 from v4_fallback baseline) ; smoke 11/11 PASS.

Register `integration` pytest marker in pyproject.toml.

2026-05-14 07:41:12 +09:00

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