feat(catalog): activate info_management_what_how_when (IMP-04 Track A 6/16)

Catalog-completeness activation — NOT V4 endorsement (Codex round 47 §7
guardrail). V4 signal = 0 across the current 4 MDX evidence sample, but
the 32-frame all-in scope means runtime backend must accept this frame
when V4 ranks it for any future MDX outside the current sample.

V4 remains the matching authority. Phase Z adds runtime availability only.

3-layer architecture (matrix §0) :
- V4 = matching authority — current evidence does not rank this frame for
  the sampled 4 MDX, so this activation must not be read as a V4-driven
  promotion. It is purely catalog completeness so V4 can route to this
  frame when warranted in future MDX content.
- figma_to_html (1171281179) = source/evidence — analysis/texts/index/flat/
  assets all present, source intent is the What/How/When 3-section
  framework.
- Phase Z = runtime — this commit adds catalog contract + partial + smoke
  fixture. Builder reuse, no new builder/parser.

Builder reuse (Codex round 47 secondary criterion under exhausted V4 tier) :
- `quadrant_flat_slots` reused (F16/F11/F20 pattern) with pad_to=3 +
  `section_{n}_label/body` key patterns.
- `quadrant_item` parser reused.
- mapper.py unchanged.

3 file changes :

1. templates/phase_z2/families/info_management_what_how_when.html
   - 3-column grid (What / How / When), each with header + body bullets.
   - PROMOTED CSS : per-section accent color (blue #2563eb What / orange
     #ea580c How / green #16a34a When), title gradient (#000 → #883700
     zone-title family), bullet markers in per-section accent color.
   - NOT PROMOTED (P1 case-by-case + preservation guardrail) : Figma
     상단 banner / icon / 배경 텍스처 / 장식. figma_to_html source
     evidence preserved for future fidelity review.
   - ADAPTED : Figma 50px+ → token-fixed, absolute positioning → flex grid.

2. templates/phase_z2/catalog/frame_contracts.yaml — F8 contract appended
   - frame_id=1171281179, family=cards, source_shape=top_bullets, strict 3,
     role_order=[section_1 (What), section_2 (How), section_3 (When)].
   - visual_hints.min_height_px = 320 (F11/F20 class — 3-column header+body).
   - accepted_content_types = [text_block].
   - 3 sub_zones (section_1/2/3 main_text).
   - payload.builder = quadrant_flat_slots (reuse) with section_{n}_* keys.

3. scripts/smoke_frame_render.py — bundled fixture for F8 self-check.

Verification :
- python scripts/smoke_frame_render.py --self-check : PASS 9/9 (F8 added at
  3577 chars CSS-only)
- python scripts/smoke_frame_render.py info_management_what_how_when
  --render-to data/runs/imp04_f8_visual : PASS, R3 artifact, 0 raster refs
- python run_mdx03_pipeline.py --phase-z2 --run-id imp04_f8_regression :
  PASS (MDX 03 V4 rank-1 unchanged; F8 V4 signal = 0 across 4 MDX sample,
  so not selected for MDX 03 either — purely catalog completeness)

scope-lock honored (3-layer + 4-class) :
- V4 logic / V4 evidence yaml : unchanged
- Existing PAYLOAD_BUILDERS / ITEM_PARSERS : unchanged (reuse only)
- Existing 8 partials : unchanged
- Composition planner / production render / Phase R' / AI/Kei : unchanged

4-class status :
- class 1 readiness : ✅ contract + builder reuse + partial + smoke + R3
- class 2 content-fit : watch — header single-line, body 3-5 bullets per
  column. 6+ bullets per column may overflow.
- class 3 / 4 : N/A

Refs Gitea #4 (IMP-04 Track A frame 6 — V4-zero catalog completeness)

templates/phase_z2/catalog/frame_contracts.yaml

@@ -515,3 +515,63 @@ dx_sw_necessity_three_perspectives:
       body_key_pattern: "perspective_{n}_body"
       empty_label: ""
       empty_body: []
+
+
+info_management_what_how_when:
+  # Reason : V4 신호 0 (4 MDX sample 안). 32-frame all-in scope 채우는
+  # **catalog-completeness activation** (NOT V4 endorsement, Codex round 47 guardrail).
+  # V4 는 matching authority. 향후 다른 MDX section 에서 V4 가 이 frame 을 추천 시
+  # backend 가 받을 수 있도록 등록.
+  # Pattern : cards/3-section-framework (What/How/When 3 관점 framework).
+  # Track A frame 6. Builder 재사용 = `quadrant_flat_slots` (F11/F20 pattern).
+  template_id: info_management_what_how_when
+  frame_id: 1171281179
+  family: cards
+
+  source_shape: top_bullets
+  cardinality:
+    strict: 3                              # 3 sections (What / How / When)
+    overflow_policy: abort_or_review
+
+  role_order:
+    - section_1                            # What (무슨 정보)
+    - section_2                            # How (어떻게 연계)
+    - section_3                            # When (언제 사용)
+
+  # min_height_px : F20 와 동등 (3-column body + header). 320 = 3×(header 30 +
+  # body bullets 75) + title 30 + padding 30 + buffer 125 / 195 base.
+  visual_hints:
+    min_height_px: 320
+
+  accepted_content_types:
+    - text_block
+
+  sub_zones:
+    - id: section_1
+      role: main_text
+      accepts: [text_block]
+      cardinality: { strict: 1 }
+      partial_target_path: ".f8b__cols > .f8b__col:nth-child(1)"
+    - id: section_2
+      role: main_text
+      accepts: [text_block]
+      cardinality: { strict: 1 }
+      partial_target_path: ".f8b__cols > .f8b__col:nth-child(2)"
+    - id: section_3
+      role: main_text
+      accepts: [text_block]
+      cardinality: { strict: 1 }
+      partial_target_path: ".f8b__cols > .f8b__col:nth-child(3)"
+
+  payload:
+    title:
+      source: section.title
+    builder: quadrant_flat_slots             # 재사용 (F16/F11/F20 pattern)
+    builder_options:
+      item_parser: quadrant_item             # 재사용
+      pad_to: 3
+      truncate_at: 3
+      label_key_pattern: "section_{n}_label"
+      body_key_pattern: "section_{n}_body"
+      empty_label: ""
+      empty_body: []