Add tenth 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: 114 files after Batch 9.
-- Portraits: 59 files after Batch 9.
-- Unit sheets: 162 files, 81 complete base/action design pairs after Batch 9.
+- Story images: 124 files after Batch 10.
+- Portraits: 64 files after Batch 10.
+- Unit sheets: 172 files, 86 complete base/action design pairs after Batch 10.
 - Target direction:
   - Story: about 5 images per major campaign chapter across 65 campaign stages.
   - Portraits: one portrait for every important `scenario.ts` speaker.
@@ -362,3 +362,42 @@ cleaner sprite-sheet quality of the newer unit batches.
 - `unit-rebel-archer.png` + `unit-rebel-archer-actions.png`
 - `unit-rebel-cavalry.png` + `unit-rebel-cavalry-actions.png`
 - `unit-rebel-leader.png` + `unit-rebel-leader-actions.png`
+
+## Batch 10 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 still-thin late-campaign and northern-expedition story keys,
+adds situational portrait variants for major opposing and frontier figures, and
+raises several low-count unit families closer to the 100+ complete design-pair
+target.
+
+### Story
+
+- `115-qishan-renewed-frozen-scout-line.png`
+- `116-yiling-fire-attack-river-ashes.png`
+- `117-baidi-entrustment-river-watch.png`
+- `118-tianshui-front-hidden-letter.png`
+- `119-hanzhong-rain-mountain-shrine.png`
+- `120-maicheng-isolation-snow-bridge.png`
+- `121-wudu-yinping-cloud-signal.png`
+- `122-chencang-siege-broken-ram.png`
+- `123-yellow-pursuit-grain-relief.png`
+- `124-nanzhong-captures-mist-stockade.png`
+
+### Portraits
+
+- `cao-cao-redcliffs.png`
+- `sima-yi-qishan.png`
+- `jiang-wei-tianshui.png`
+- `ma-chao-jiameng.png`
+- `meng-huo-final.png`
+
+### Units
+
+- `unit-shu-spearman-guard.png` + `unit-shu-spearman-guard-actions.png`
+- `unit-shu-archer-longbow.png` + `unit-shu-archer-longbow-actions.png`
+- `unit-wei-officer-gate.png` + `unit-wei-officer-gate-actions.png`
+- `unit-wu-infantry-marine.png` + `unit-wu-infantry-marine-actions.png`
+- `unit-nanman-shaman-storm.png` + `unit-nanman-shaman-storm-actions.png`