Approve Nanman infantry handpainted sprite v1

docs/unit-sprite-nanman-infantry-v1-approval-packet.md

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+# Nanman Infantry v1 Approval Packet
+
+- unit: `unit-nanman-infantry`
+- version: `v1`
+- source: `docs/handpaint-batch6-nanman-infantry-source-v1.png`
+- contact sheet: `docs/handpaint-batch6-nanman-infantry-v1-contact.png`
+- animation: `docs/handpaint-batch6-nanman-infantry-v1-animation.gif`
+- battle preview: `docs/handpaint-batch6-nanman-infantry-v1-debug-preview-battle-check.png`
+- before/after: `docs/handpaint-batch6-nanman-infantry-v1-before-after.png`
+- scale compare: `docs/handpaint-batch6-nanman-infantry-v1-scale-compare.png`
+- current approval board: `docs/unit-sprite-current-approval-board.png`
+
+## Visual Decision
+
+Approved for the continuous production run.
+
+- 50px battle readability: pass
+- regular Nanman infantry identity: pass
+- shield/short-weapon silhouette: pass
+- visibly less ornate than Meng Huo: pass
+- opaque unit body: pass
+- frame boundary safety: pass
+- idle/action scale stability: pass
+
+## Technical Checks
+
+- local browser URL: `http://127.0.0.1:4173/heros_web/?debug&debugSpritePreview=unit-nanman-infantry&v=nanman-infantry-v1-final`
+- Local browser console errors: `0`
+- 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: `152..219`
+- base bbox height range: `288..288`
+- base bottom range: `303..303`
+- action bbox width range: `152..243`
+- action bbox height range: `265..288`
+- action bottom range: `303..303`
+
+## Notes
+
+The v1 sheet carries the Nanman palette and shield shape from the Meng Huo anchor, but keeps the armor and stance simpler so the unit reads as regular infantry.