Add ninth 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: 104 files after Batch 8.
-- Portraits: 54 files after Batch 8.
-- Unit sheets: 154 files, 77 complete base/action design pairs after Batch 8.
+- Story images: 114 files after Batch 9.
+- Portraits: 59 files after Batch 9.
+- Unit sheets: 162 files, 81 complete base/action design pairs after Batch 9.
 - Target direction:
   - Story: about 5 images per major campaign chapter across 65 campaign stages.
   - Portraits: one portrait for every important `scenario.ts` speaker.
@@ -303,3 +303,41 @@ officers, and adds unit variants for Shu cavalry, Wei cavalry, and Wu strategist
 - `unit-wei-cavalry-elite.png` + `unit-wei-cavalry-elite-actions.png`
 - `unit-wu-strategist-fire.png` + `unit-wu-strategist-fire-actions.png`
 - `unit-shu-cavalry-scout.png` + `unit-shu-cavalry-scout-actions.png`
+
+## Batch 9 Priority
+
+Status: complete. Visual contact sheets, image dimensions, unit base/action pairs,
+auto-connection checks, `pnpm build`, and `pnpm verify:flow` passed.
+
+This batch thickens late-campaign and northern-expedition story keys that still
+had one or two variants, adds situational portrait variants for the core Shu
+heroes, and lifts several low-count unit families to at least three complete
+design pairs.
+
+### Story
+
+- `105-qishan-renewed-snow-relay.png`
+- `106-hanzhong-rain-supply-trench.png`
+- `107-maicheng-isolation-abandoned-gate.png`
+- `108-yiling-fire-forest-corridor.png`
+- `109-wudu-yinping-cliff-granary.png`
+- `110-baidi-entrustment-medicine-chamber.png`
+- `111-tianshui-front-market-command.png`
+- `112-chencang-siege-ladder-yard.png`
+- `113-anti-dong-coalition-oath-camp.png`
+- `114-red-cliffs-wind-altar.png`
+
+### Portraits
+
+- `liu-bei-shuhan.png`
+- `guan-yu-jingzhou.png`
+- `zhang-fei-ba-command.png`
+- `zhuge-liang-northern.png`
+- `zhao-yun-veteran.png`
+
+### Units
+
+- `unit-shu-infantry-banner.png` + `unit-shu-infantry-banner-actions.png`
+- `unit-wei-archer-crossbow.png` + `unit-wei-archer-crossbow-actions.png`
+- `unit-wu-cavalry-river.png` + `unit-wu-cavalry-river-actions.png`
+- `unit-rebel-archer-fire.png` + `unit-rebel-archer-fire-actions.png`