[Necrosource AI] Mini-map doesn't show when map size is over 682 walkable hexes

[necrosource-bot]

Automated Fix

Issue: Mini-map doesn't show when map size is over 682 walkable hexes

QA Review

APPROVE: The fix correctly addresses the root cause — the hardcoded scale = 24 caused intermediate texture dimensions to exceed SDL's 16384px GPU limit for maps ≥ 683 hexes.

Math verification:

• Width: map.w() * scale * 3/4 ≤ max_w → scale ≤ max_w * 4 / (map.w() * 3) ✓
• Height: map.h() * scale ≤ max_h → scale ≤ max_h / map.h() ✓
• Both use integer division which floors (conservative/safe) ✓

Edge cases handled:

• map.w() > 0 && map.h() > 0 guard prevents division by zero ✓
• Null renderer guard ✓
• SDL_GetRendererInfo return value checked and max_texture_width/height > 0 validated ✓
• std::max(1, ...) prevents zero-size texture ✓
• Doesn't hardcode 16384 — queries actual GPU limit ✓
• Falls through gracefully if renderer info unavailable (scale unchanged) ✓

No regressions expected:

• The clamped scale is the same local variable used downstream, so all dimension calculations in the function automatically use the reduced value
• The tactical minimap (scale=4) already worked; this fix applies the same logic consistently, though clamping only triggers for extreme map sizes in that mode
• Output minimap widget dimensions are unaffected (correct per design)

Minor concern (non-blocking): std::min({...}) with an initializer list requires <algorithm>, but this is almost certainly already included in a rendering-heavy file like minimap.cpp.

---

This PR was generated by the Necrosource AI agent team.