fix: turn off auto-boss/auto-quest on failure and surface status (#46)

## Summary

- Auto-boss now turns itself **off** when a boss fight is **lost**, so the player can reassess rather than the system silently looping. A "🤖 Last fight: [Boss] — ❌ Lost" status line appears in the boss panel.
- Auto-boss also turns off (with an ⚠️ error message) when the API call fails outright (e.g. party has no adventurers), replacing the previous behaviour of silently hammering the API every animation frame.
- Auto-quest now turns itself **off** whenever a quest fails the random-chance check, detected inside the tick's `setState` callback immediately after `applyTick`.
- `autoBoss: false` and `autoQuest: false` are now part of `initialGameState`, so these fields persist through save/load cycles from the very first session — preventing a race window where the boss-route DB write could strip them before the first auto-save.
- `toggleAutoBoss` clears both `autoBossLastResult` and `autoBossError` on each toggle so the panel always reflects the current session cleanly.

## Test plan

- [x] `pnpm lint` — 0 errors, 0 warnings
- [x] `pnpm build` — all packages clean
- [x] `pnpm test` — 100% coverage maintained across the board

Closes #40

✨ This issue was created with help from Hikari~ 🌸

Reviewed-on: #46
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

apps/web/src/components/game/bossPanel.tsx

@@ -226,7 +226,14 @@ const computePartyStats = (
  * @returns The JSX element.
  */
 const BossPanel = (): JSX.Element => {
-  const { state, challengeBoss, formatNumber, toggleAutoBoss } = useGame();
+  const {
+    state,
+    challengeBoss,
+    formatNumber,
+    toggleAutoBoss,
+    autoBossLastResult,
+    autoBossError,
+  } = useGame();
   const [ challengingBossId, setChallengingBossId ] = useState<string | null>(
     null,
   );
@@ -346,6 +353,23 @@ const BossPanel = (): JSX.Element => {
         </div>
       </div>
 
+      {autoBossError === null
+        ? null
+        : <p className="auto-boss-error">
+          {"⚠️ Auto-boss stopped: "}
+          {autoBossError}
+        </p>
+      }
+      {autoBossLastResult !== null && autoBossError === null
+        ? <p className="auto-boss-status">
+          {"🤖 Last fight: "}
+          {autoBossLastResult.bossName}
+          {autoBossLastResult.won
+            ? " — ✅ Won"
+            : " — ❌ Lost"}
+        </p>
+        : null}
+
       <ZoneSelector
         activeZoneId={activeZoneId}
         onSelectZone={setActiveZoneId}