Approve Wei iron cavalry handpainted sprite v2

docs/unit-sprite-wei-cavalry-iron-v2-approval-packet.md

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+# Unit Sprite Approval Packet: unit-wei-cavalry-iron v2
+
+- Status: approved during continuous production run
+- Source art: `docs/handpaint-batch3-wei-cavalry-iron-source-v2.png`
+- Contact sheet: `docs/handpaint-batch3-wei-cavalry-iron-v2-contact.png`
+- Animation GIF: `docs/handpaint-batch3-wei-cavalry-iron-v2-animation.gif`
+- Before/after: `docs/handpaint-batch3-wei-cavalry-iron-v2-before-after.png`
+- Scale compare: `docs/handpaint-batch3-wei-cavalry-iron-v2-scale-compare.png`
+- Browser check: `docs/handpaint-batch3-wei-cavalry-iron-v2-debug-preview-battle-check.png`
+- Current approval board: `docs/unit-sprite-current-approval-board.png`
+- Debug preview URL: `http://127.0.0.1:4173/heros_web/?debug&debugSpritePreview=unit-wei-cavalry-iron&v=wei-cavalry-iron-v2-console-clean`
+
+## Visual Decision
+
+Wei iron cavalry v2 is accepted as a heavier armored mounted unit. The darker horse barding and bulkier blue-black armor separate it from Wei elite cavalry while preserving a clear mounted silhouette.
+
+## Technical Checks
+
+- Base partial alpha: `0`
+- Action partial alpha: `0`
+- Base frame border hits: `0`
+- Action frame border hits: `0`
+- Base empty frames: `0`
+- Action empty frames: `0`
+- Base bbox width range: `144..271`
+- Base bbox height range: `277..295`
+- Base bottom range: `303..303`
+- Action bbox width range: `144..306`
+- Action bbox height range: `261..295`
+- Action bottom range: `303..303`
+- Local build: `passed`
+- Local browser console errors: `0`
+
+## Notes
+
+v2 fixes the narrow front and short side frames from v1. It keeps the armored horse readable at 50px scale with stable hoof baselines and no border hits.