Add fifth sequential asset expansion batch

docs/asset-backlog.md

@@ -6,9 +6,9 @@ generated, connected, validated, built, flow-tested, committed, and pushed.
 
 ## Current Baseline
 
-- Story images: 64 files after Batch 4.
-- Portraits: 31 files after Batch 4.
-- Unit sheets: 122 files, 61 complete base/action design pairs after Batch 4.
+- Story images: 76 files after Batch 5.
+- Portraits: 38 files after Batch 5.
+- Unit sheets: 132 files, 66 complete base/action design pairs after Batch 5.
 - Target direction:
   - Story: about 5 images per major campaign chapter across 65 campaign stages.
   - Portraits: one portrait for every important `scenario.ts` speaker.
@@ -150,3 +150,45 @@ backgrounds and class/faction unit variety.
 - `unit-wei-strategist-blue.png` + `unit-wei-strategist-blue-actions.png`
 - `unit-wu-officer-river.png` + `unit-wu-officer-river-actions.png`
 - `unit-nanman-officer-warlord.png` + `unit-nanman-officer-warlord-actions.png`
+
+## Batch 5 Priority
+
+Status: complete. Visual contact sheets, image dimensions, unit base/action pairs,
+`pnpm build`, and `pnpm verify:flow` passed. Code connection uses the existing
+story, portrait, and unit variant discovery paths.
+
+This batch expands the most repeated story backgrounds, adds variants for major
+late-campaign speakers, and strengthens low-variant unit families.
+
+### Story
+
+- `65-yizhou-luo-road-cliff-fortress.png`
+- `66-yizhou-luo-road-mountain-scouts.png`
+- `67-nanzhong-captures-bamboo-gorge.png`
+- `68-nanzhong-captures-river-night-camp.png`
+- `69-wandering-market-shelter.png`
+- `70-wandering-cold-mountain-pass.png`
+- `71-northern-supply-valley.png`
+- `72-northern-mountain-war-council.png`
+- `73-red-cliffs-chain-smoke.png`
+- `74-wolong-river-strategy.png`
+- `75-jingzhou-crisis-river-watchtowers.png`
+- `76-fan-castle-flood-river-breach.png`
+
+### Portraits
+
+- `zhao-yun-campaign.png`
+- `jiang-wei-campaign.png`
+- `sima-yi-campaign.png`
+- `cao-cao-campaign.png`
+- `ma-chao-campaign.png`
+- `huang-zhong-campaign.png`
+- `wang-ping-campaign.png`
+
+### Units
+
+- `unit-shu-archer-veteran.png` + `unit-shu-archer-veteran-actions.png`
+- `unit-shu-strategist-white.png` + `unit-shu-strategist-white-actions.png`
+- `unit-wei-officer-iron.png` + `unit-wei-officer-iron-actions.png`
+- `unit-wu-infantry-river.png` + `unit-wu-infantry-river-actions.png`
+- `unit-rebel-archer-veteran.png` + `unit-rebel-archer-veteran-actions.png`