feat: debug panel with force unlocks and hard reset (#65)

## Summary
- Adds a new **Debug** tab to the game UI with two self-service tools for players with broken save state
- **Force Unlocks**: scans the player's save and grants any zones, quests, bosses, and exploration areas they've earned but that are still locked — shows a breakdown of what was unlocked (or reports nothing needed fixing)
- **Hard Reset**: wipes progress back to a fresh save (preserving lifetime stats), guarded behind a confirmation modal to prevent accidental clicks

## Files added
- `apps/api/src/routes/debug.ts` — two POST endpoints (`/force-unlocks`, `/hard-reset`)
- `apps/web/src/components/game/debugPanel.tsx` — the Debug tab UI
- `apps/web/src/components/ui/confirmationModal.tsx` — reusable confirmation modal

## Files modified
- `apps/api/src/index.ts` — registers the debug router
- `packages/types/src/interfaces/api.ts` — adds `ForceUnlocksResponse` type
- `packages/types/src/index.ts` — exports the new type
- `apps/web/src/api/client.ts` — adds `forceUnlocks()` and `debugHardReset()` API calls
- `apps/web/src/context/gameContext.tsx` — wires both functions into game context
- `apps/web/src/components/game/gameLayout.tsx` — adds the Debug tab
- `apps/web/src/styles.css` — styles for action buttons, cards, result messages, and confirmation modal

✨ This PR was created with help from Hikari~ 🌸

Reviewed-on: #65
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

apps/web/src/context/gameContext.tsx

@@ -42,6 +42,8 @@ import {
   challengeBoss as challengeBossApi,
   collectExploration as collectExplorationApi,
   craftRecipe as craftRecipeApi,
+  debugHardReset as debugHardResetApi,
+  forceUnlocks as forceUnlocksApi,
   loadGame,
   prestige as prestigeApi,
   resetProgress as resetProgressApi,
@@ -546,6 +548,24 @@ interface GameContextValue {
    */
   resetProgress: ()=> Promise<void>;
 
+  /**
+   * Force-unlock any zones, quests, and bosses the player has earned but that
+   * are still incorrectly locked due to a state bug.
+   * @returns Counts of what was corrected.
+   */
+  forceUnlocks: ()=> Promise<{
+    bossesUnlocked:      number;
+    explorationUnlocked: number;
+    questsUnlocked:      number;
+    zonesUnlocked:       number;
+  }>;
+
+  /**
+   * Completely wipe the player's progress back to a brand-new save via the
+   * debug endpoint.
+   */
+  debugHardReset: ()=> Promise<void>;
+
   /**
    * Last auto-boss fight result — null until the first auto fight completes or
    * when auto-boss is toggled off.
@@ -2025,6 +2045,61 @@ export const GameProvider = ({
     }
   }, []);
 
+  const forceUnlocks = useCallback(async() => {
+    try {
+      const data = await forceUnlocksApi();
+      setState(data.state);
+      if (data.signature !== undefined) {
+        signatureReference.current = data.signature;
+        localStorage.setItem("elysium_save_signature", data.signature);
+      }
+      return {
+        bossesUnlocked:      data.bossesUnlocked,
+        explorationUnlocked: data.explorationUnlocked,
+        questsUnlocked:      data.questsUnlocked,
+        zonesUnlocked:       data.zonesUnlocked,
+      };
+    } catch (error_: unknown) {
+      setError(
+        error_ instanceof Error
+          ? error_.message
+          : "Failed to force unlocks",
+      );
+      return {
+        bossesUnlocked:      0,
+        explorationUnlocked: 0,
+        questsUnlocked:      0,
+        zonesUnlocked:       0,
+      };
+    }
+  }, []);
+
+  const debugHardReset = useCallback(async() => {
+    setIsLoading(true);
+    setError(null);
+    try {
+      const data = await debugHardResetApi();
+      setState(data.state);
+      setLastSavedAt(data.state.player.lastSavedAt);
+      setSchemaOutdated(false);
+      setOfflineGold(0);
+      setOfflineEssence(0);
+      setLoginBonus(null);
+      if (data.signature !== undefined) {
+        signatureReference.current = data.signature;
+        localStorage.setItem("elysium_save_signature", data.signature);
+      }
+    } catch (error_: unknown) {
+      setError(
+        error_ instanceof Error
+          ? error_.message
+          : "Failed to reset progress",
+      );
+    } finally {
+      setIsLoading(false);
+    }
+  }, []);
+
   const dismissLoginBonus = useCallback(() => {
     setLoginBonus(null);
   }, []);
@@ -2054,6 +2129,7 @@ export const GameProvider = ({
       completedQuestToasts,
       craftRecipe,
       currentSchemaVersion,
+      debugHardReset,
       dismissAchievement,
       dismissApotheosisToast,
       dismissBattle,
@@ -2072,6 +2148,7 @@ export const GameProvider = ({
       failedQuestToasts,
       flushBossLoreToasts,
       forceSync,
+      forceUnlocks,
       formatNumber,
       handleClick,
       isLoading,
@@ -2125,6 +2202,7 @@ export const GameProvider = ({
     completeChapter,
     craftRecipe,
     currentSchemaVersion,
+    debugHardReset,
     dismissAchievement,
     dismissApotheosisToast,
     dismissBattle,
@@ -2142,6 +2220,7 @@ export const GameProvider = ({
     error,
     flushBossLoreToasts,
     forceSync,
+    forceUnlocks,
     handleClick,
     isLoading,
     isSyncing,