fix(score): post-game modal — return credited delta, not state total

ScoreSuccess.resources je type-doc-ovaný ako "credited resource delta",
ale BE vracal credit.resources (= total state.resources po pripočítaní).
PostGameBreakdown chip-y to renderovali ako "+98691 watts" namiesto
skutočnej +12 watts delty z hry.

- app/api/score/route.ts:172 — resources = trimmed (delta), nie credit.resources (total)
- app/api/score/route.ts:107 — narrow type na Partial<Record<ResourceKey, number>>

User-trust kritické: bez fix-u modal sľuboval desaťtisíce zdrojov ktoré
sa nezhmotnili v reálnom stave.

Tests: typecheck clean, lint 0 errors, vitest 719/719 pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: B2JK-Industry

app/api/score/route.ts

@@ -104,7 +104,7 @@ export async function POST(request: NextRequest) {
   // the anti-grind rule: replays that don't beat the prior best yield 0.
   // Ledger dedupe key: `score:${gameId}:${previousBest}->${newBest}` — that
   // exact transition can happen at most once per player.
-  let resources = null as Awaited<ReturnType<typeof getPlayerState>>["resources"] | null;
+  let resources: Partial<Record<ResourceKey, number>> | null = null;
   let capped = false;
   // HIGH-4: expose the breakdown so the post-game modal can render the
   // ladder; the final number the modal shows is guaranteed to match the
@@ -169,7 +169,11 @@ export async function POST(request: NextRequest) {
           ),
         );
       }
-      resources = credit.resources;
+      // Return the credited delta (what this score added), not the
+      // post-credit total state — the post-game modal reads this field
+      // as a delta and would otherwise render the player's full balance
+      // as the per-game gain.
+      resources = trimmed;
     }
   }