Merge branch 'feat/end-hint'

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

PLAN.md

@@ -197,3 +197,6 @@ Abgabe: **9. Dezember 2026, 03:00 MEZ**. Eingereicht wird in „Best Daily Game
   „All 3 stars! Keep going for more gold – or end the game.“
 - Erreichte Ziele werden **golden** hervorgehoben (wie `goal-chip.done` im Hauptspiel).
 - `devvit playtest` trägt `dev.subreddit` (`ninelands_game_dev`) in `devvit.json` ein.
+- Rückmeldung Besitzer: Bei „One farm per land“ bleiben am Ende oft nur Ritter, die Gold kosten. Darum prüft der
+  Client nach jedem Zug, ob noch ein Zug Gold bringt (`gainLeft`, alle gültigen Züge per `preview`, < 1 ms). Wenn
+  nicht: Hinweis „No move left gains gold – end the game to keep what you have.“ und „End game“ leuchtet golden.

src/client/game.css

@@ -181,6 +181,23 @@ button.end {
   white-space: nowrap;
 }
 
+button.end.suggest {
+  background: var(--px-gold);
+  animation: pulse 1.2s steps(2) infinite;
+}
+
+@keyframes pulse {
+  50% {
+    outline: 2px solid var(--px-parchment);
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  button.end.suggest {
+    animation: none;
+  }
+}
+
 button.end.armed {
   background: var(--px-red);
   color: var(--px-parchment);

src/client/game.ts

@@ -260,6 +260,11 @@ function update(): void {
   bothGoal.classList.toggle('done', stars.both)
   undoBtn.disabled = finished || !game.canUndo
   endBtn.disabled = finished || game.moves.length === 0
+  gainCache = null
+  endBtn.classList.toggle(
+    'suggest',
+    !finished && game.moves.length > 0 && !gainLeft(),
+  )
   const hasCastle = game.count('HIVEMOTHER') > 0
   for (const [unit, btn] of toolButtons) {
     btn.classList.toggle('active', unit === tool)
@@ -272,6 +277,23 @@ function update(): void {
   renderHint()
 }
 
+/** Gibt es noch einen Zug, der Gold bringt? (je Spielstand einmal berechnet) */
+let gainCache: boolean | null = null
+function gainLeft(): boolean {
+  if (gainCache !== null) return gainCache
+  gainCache = game.moves.length === 0
+  for (const unit of UNIT_TYPES) {
+    if (gainCache) break
+    const legal = game.legalMoves(unit)
+    for (let cell = 0; cell < legal.length && !gainCache; cell++) {
+      if (!legal[cell]) continue
+      const p = game.preview(unit, cell)
+      if (p.ok && p.net > 0) gainCache = true
+    }
+  }
+  return gainCache
+}
+
 /** Feld, für das gerade eine Vorschau gilt: angetippt (Touch) oder unter der Maus */
 function activeCell(): number | null {
   return pendingTouch ?? hovered
@@ -320,7 +342,8 @@ function renderHint(): void {
     )
     return
   }
-  if (starsOf(game, day.goals).both) setHint(HINTS.allStars, 'good')
+  if (!gainLeft()) setHint(HINTS.noGain, 'warn')
+  else if (starsOf(game, day.goals).both) setHint(HINTS.allStars, 'good')
   else if (game.count('HIVEMOTHER') === 0) setHint(HINTS.castle)
   else if (game.moves.length < 3) setHint(HINTS.farmer)
   else setHint(HINTS.general)

src/client/texts.ts

@@ -114,6 +114,7 @@ export const HINTS = {
   general:
     'Ore ⛰ and herbs 🌿 pay 20 gold. Knights pay double. Keep going until no move is left.',
   touch: 'Tap again to place.',
+  noGain: 'No move left gains gold – end the game to keep what you have.',
   allStars: 'All 3 stars! Keep going for more gold – or end the game.',
 } as const