IMP-04 F17 schema correction — paired_rows_4x2 + pill alternation + source-faithful theme

source = 8 atomic issues (4 paired rows × 2 cells per texts.md), 이전 strict-4
가 source 의 절반 누락. round 55~73 review-loop 의 calibration frame.

- contract : source_shape=top_bullets / layout_variant=paired_rows_4x2_alternating_pills
  / strict 8 (no pad/truncate) / role_order row_{1..4}_{left,right} / visual_hints
  pill_positions + row_gap_after / builder paired_rows_4x2_slots
- builder : new _build_paired_rows_4x2_slots — 2-axis (row × side) deterministic
  index mapping, strict 8 raises before render, quadrant_item parser 재사용
- partial : 4-row × 2-cell flex, pill alternation (row 1/3 top, row 2/4 bottom
  via column-reverse), row 2-3 visual gap, source-faithful color (rgb(204,82,0)
  →rgb(136,55,0) title + #60A451 row border + rgba(250,237,203,0.15) bg + #0c271e
  body + 2px dashed #60A451 cell 분할선), pill = CSS approximation (asset crop
  variant single-pass 비용 高 → fallback per Codex round 62/68 scope cap, pill
  shape + alternation + green/cream/brown theme 보존), no row headers (source
  부재, inference 금지)
- fixture : flat 8 top-bullet (texts.md 8 issues 그대로)
- smoke + R3 : PASS (11/11 self-check, 5535 chars partial, 8 units rendered,
  pill alternation 정합, row 2-3 gap, no invented row headers)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

templates/phase_z2/catalog/frame_contracts.yaml

@@ -635,68 +635,95 @@ sw_reality_three_emphasis:
 
 
 bim_current_problems_paired:
-  # Reason : V4 RS=1 (4 MDX sample 안 restructure 1). 32-frame all-in scope —
-  # **catalog-completeness activation** (NOT V4 endorsement — V4 신호 유효 단 restructure
-  # tier 이며 직접 use_as_is/light_edit 추천 없음).
-  # Pattern : cards/paired-rows-2x2 — 4 problem cards in 2x2 grid (BIM 수행 4 문제).
-  # Track A frame 8. Builder 재사용 = `quadrant_flat_slots` (F16 pattern, pad_to=4).
+  # Reason : V4 RS=1 (4 MDX sample 안 restructure 1). source 가 8 atomic issues 임을 confirm.
+  # **schema-correction** — round 55~73 의 review-loop 의 calibration frame.
+  # 자체 round 71 §4 F17 done-definition lock per Codex round 70/72 + Claude round 63 §5.
+  # Pattern : cards/paired-rows-4x2 — 4 paired rows × 2 issue cells (top/bottom pill alternation).
+  # Track A frame 8. 신규 builder = `paired_rows_4x2_slots` (quadrant_flat_slots → 2-axis).
   template_id: bim_current_problems_paired
   frame_id: 1171281194
   family: cards
 
-  source_shape: top_bullets
+  source_shape: top_bullets                  # mapper split_source allow-list 정합 (Codex round 60)
+  layout_variant: paired_rows_4x2_alternating_pills  # runtime projection model
   cardinality:
-    strict: 4                              # 4 issues (2x2 grid)
+    strict: 8                                # 8 atomic issues (4 rows × 2 cells per source texts.md)
     overflow_policy: abort_or_review
 
+  # row × side deterministic mapping per Codex round 70 §1.
   role_order:
-    - issue_1
-    - issue_2
-    - issue_3
-    - issue_4
+    - row_1_left
+    - row_1_right
+    - row_2_left
+    - row_2_right
+    - row_3_left
+    - row_3_right
+    - row_4_left
+    - row_4_right
 
-  # min_height_px : F16 (quadrant 4) 와 동등 class.
-  # 2 row × 2 col × (label 24 + body 60) + title 30 + gaps + padding = ~280 + buffer 70 = **350**.
+  # min_height_px : provisional 380 (8 cells + title + gaps), smoke 후 1 회 조정 가능.
+  # pill_positions : source index.html line 161~225 의 row-별 pill 상/하 alternation (top/bottom/top/bottom).
+  # row_gap_after : source line 199-200 의 `<div class="row-gap">` (행 2-3 사이 시각 단락) per Codex round 58 §3.
   visual_hints:
-    min_height_px: 350
+    min_height_px: 380
+    pill_positions: [top, bottom, top, bottom]
+    row_gap_after: [2]
 
   accepted_content_types:
     - text_block
 
   sub_zones:
-    - id: issue_1
+    - id: row_1_left
       role: main_text
       accepts: [text_block]
       cardinality: { strict: 1 }
-      partial_target_path: ".f17b__grid > .f17b__cell:nth-child(1)"
-    - id: issue_2
+      partial_target_path: ".f17b__row:nth-child(1) > .f17b__cell--left"
+    - id: row_1_right
       role: main_text
       accepts: [text_block]
       cardinality: { strict: 1 }
-      partial_target_path: ".f17b__grid > .f17b__cell:nth-child(2)"
-    - id: issue_3
+      partial_target_path: ".f17b__row:nth-child(1) > .f17b__cell--right"
+    - id: row_2_left
       role: main_text
       accepts: [text_block]
       cardinality: { strict: 1 }
-      partial_target_path: ".f17b__grid > .f17b__cell:nth-child(3)"
-    - id: issue_4
+      partial_target_path: ".f17b__row:nth-child(2) > .f17b__cell--left"
+    - id: row_2_right
       role: main_text
       accepts: [text_block]
       cardinality: { strict: 1 }
-      partial_target_path: ".f17b__grid > .f17b__cell:nth-child(4)"
+      partial_target_path: ".f17b__row:nth-child(2) > .f17b__cell--right"
+    - id: row_3_left
+      role: main_text
+      accepts: [text_block]
+      cardinality: { strict: 1 }
+      partial_target_path: ".f17b__row:nth-child(3) > .f17b__cell--left"
+    - id: row_3_right
+      role: main_text
+      accepts: [text_block]
+      cardinality: { strict: 1 }
+      partial_target_path: ".f17b__row:nth-child(3) > .f17b__cell--right"
+    - id: row_4_left
+      role: main_text
+      accepts: [text_block]
+      cardinality: { strict: 1 }
+      partial_target_path: ".f17b__row:nth-child(4) > .f17b__cell--left"
+    - id: row_4_right
+      role: main_text
+      accepts: [text_block]
+      cardinality: { strict: 1 }
+      partial_target_path: ".f17b__row:nth-child(4) > .f17b__cell--right"
 
   payload:
     title:
       source: section.title
-    # Builder 재사용 = `quadrant_flat_slots` (F16 pattern, pad_to=4).
-    # F16 = TL/TR/BL/BR quadrant. F17 = paired-rows-2x2 (top-left/top-right/bottom-left/bottom-right).
-    # 차이 = key prefix only ("quadrant_N" vs "issue_N"). partial layout 동일 2x2 grid.
-    builder: quadrant_flat_slots
+    # 신규 builder — quadrant_flat_slots 와 차이 : 1-axis (TL/TR/BL/BR) → 2-axis (row × side).
+    # strict 8 + no pad/truncate (silent loss 차단, Codex round 60 §3).
+    # parser = quadrant_item 재사용 (label + body heading-less, Codex round 60).
+    builder: paired_rows_4x2_slots
     builder_options:
-      item_parser: quadrant_item             # 재사용
-      pad_to: 4
-      truncate_at: 4
-      label_key_pattern: "issue_{n}_label"
-      body_key_pattern: "issue_{n}_body"
-      empty_label: ""
-      empty_body: []
+      item_parser: quadrant_item
+      label_key_pattern: "row_{r}_{side}_label"
+      body_key_pattern: "row_{r}_{side}_body"
+      rows: 4
+      sides: [left, right]