feat(controller): modal di scelta squadra e video per il time out

Il bottone Time Out apre un modal invece di attivare direttamente
l'overlay: si sceglie la squadra che lo ha richiesto e uno dei video
in spot/ (durata rilevata lato client via <video preload=metadata>).
A time out attivo il bottone diventa "Termina" con countdown, per
poterlo interrompere manualmente prima dei 30s.

src/components/ControllerPage.vue

@@ -7,7 +7,9 @@
     </div>
 
     <!-- Banner modalità time out attiva -->
-    <div class="timeout-banner" v-if="state.timeout">⏱ MODALITÀ TIME OUT ATTIVA</div>
+    <div class="timeout-banner" v-if="state.timeout">
+      ⏱ TIME OUT {{ state.sp.nomi[state.timeoutTeam] }} — {{ timeoutCountdown }}
+    </div>
 
     <!-- ══════════════════ MODALITÀ MOBILE ══════════════════ -->
     <template v-if="!isEstesa">
@@ -67,8 +69,9 @@
         <button class="btn btn-ctrl" @click="openCambiTeam()">
           Cambi
         </button>
-        <button class="btn btn-ctrl btn-timeout" :class="{ active: state.timeout }" @click="sendAction({ type: 'toggleTimeout' })">
+        <button class="btn btn-ctrl btn-timeout" :class="{ active: state.timeout }"
-          ⏱ Time Out
+          @click="state.timeout ? terminaTimeout() : openTimeout()">
+          {{ state.timeout ? '⏱ ' + timeoutCountdown : '⏱ Time Out' }}
         </button>
         <button class="btn btn-danger" @click="confirmReset = true">
           Reset
@@ -148,7 +151,8 @@
         <button class="btn e-act" @click="sendAction({ type: 'toggleStriscia' })">Striscia {{ state.visuStriscia ? 'ON' : 'OFF' }}</button>
         <button class="btn e-act" @click="speak()">Voce</button>
         <button class="btn e-act" @click="openConfig()">Config</button>
-        <button class="btn e-act btn-timeout" :class="{ active: state.timeout }" @click="sendAction({ type: 'toggleTimeout' })">⏱ Time Out</button>
+        <button class="btn e-act btn-timeout" :class="{ active: state.timeout }"
+          @click="state.timeout ? terminaTimeout() : openTimeout()">{{ state.timeout ? '⏱ ' + timeoutCountdown : '⏱ Time Out' }}</button>
         <button class="btn e-act e-act--danger" @click="confirmReset = true">Reset</button>
       </div>
     </div>
@@ -277,6 +281,43 @@
         </div>
       </div>
     </div>
+
+    <!-- Finestra avvio time out: squadra + scelta video -->
+    <div class="overlay" v-if="showTimeoutModal" @click.self="showTimeoutModal = false">
+      <div class="dialog dialog-timeout">
+        <div class="dialog-title">Time Out</div>
+
+        <div class="form-group">
+          <label>Squadra che lo ha richiesto</label>
+          <div class="dialog-buttons">
+            <button class="btn btn-set home-bg" :class="{ 'team-sel-active': timeoutTeamSel === 'home' }"
+              @click="timeoutTeamSel = 'home'">{{ state.sp.nomi.home }}</button>
+            <button class="btn btn-set guest-bg" :class="{ 'team-sel-active': timeoutTeamSel === 'guest' }"
+              @click="timeoutTeamSel = 'guest'">{{ state.sp.nomi.guest }}</button>
+          </div>
+        </div>
+
+        <div class="form-group">
+          <label>Video (30s nominali)</label>
+          <div class="timeout-video-list">
+            <label class="timeout-video-option" v-for="file in spotList" :key="file">
+              <input type="radio" name="timeoutVideo" :value="file" v-model="timeoutVideoSel" />
+              {{ file }}
+              <span class="video-duration">{{ formatDurata(spotDurations[file]) }}</span>
+            </label>
+            <label class="timeout-video-option">
+              <input type="radio" name="timeoutVideo" :value="null" v-model="timeoutVideoSel" />
+              Nessun video (overlay "TIME OUT")
+            </label>
+          </div>
+        </div>
+
+        <div class="dialog-buttons">
+          <button class="btn btn-cancel" @click="showTimeoutModal = false">Annulla</button>
+          <button class="btn btn-confirm" :disabled="!timeoutTeamSel" @click="avviaTimeout()">Avvia</button>
+        </div>
+      </div>
+    </div>
   </section>
 </template>
 
@@ -304,6 +345,13 @@ export default {
         formGuest: ["1", "2", "3", "4", "5", "6"],
       },
       isLandscape: window.innerWidth > window.innerHeight,
+      showTimeoutModal: false,
+      timeoutTeamSel: null,
+      timeoutVideoSel: null,
+      spotList: [],
+      spotDurations: {},
+      nowTick: Date.now(),
+      timeoutTicker: null,
     }
   },
   computed: {
@@ -338,6 +386,17 @@ export default {
       }
       return hasComplete
     },
+    timeoutRemaining() {
+      if (!this.state.timeout || !this.state.timeoutStartedAt) return 30
+      const trascorsi = (this.nowTick - this.state.timeoutStartedAt) / 1000
+      return Math.max(0, Math.ceil(30 - trascorsi))
+    },
+    timeoutCountdown() {
+      const r = this.timeoutRemaining
+      const m = String(Math.floor(r / 60)).padStart(2, '0')
+      const s = String(r % 60).padStart(2, '0')
+      return `${m}:${s}`
+    },
   },
   watch: {
     squadraVincente(val) {
@@ -346,6 +405,12 @@ export default {
         this.showSetVinto = true
       }
     },
+    'state.timeout': {
+      immediate: true,
+      handler(attivo) {
+        attivo ? this.avviaTimeoutTicker() : this.fermaTimeoutTicker()
+      },
+    },
   },
   mounted() {
     this._resizeHandler = () => { this.isLandscape = window.innerWidth > window.innerHeight }
@@ -355,6 +420,7 @@ export default {
   beforeUnmount() {
     window.removeEventListener('resize', this._resizeHandler)
     window.removeEventListener('orientationchange', this._resizeHandler)
+    this.fermaTimeoutTicker()
   },
   methods: {
     generaReferto,
@@ -458,6 +524,47 @@ export default {
         : this.servHome ? `${home} a ${guest}` : `${guest} a ${home}`
       this.sendWs({ type: 'speak', text })
     },
+    avviaTimeoutTicker() {
+      this.fermaTimeoutTicker()
+      this.nowTick = Date.now()
+      this.timeoutTicker = setInterval(() => { this.nowTick = Date.now() }, 250)
+    },
+    fermaTimeoutTicker() {
+      if (this.timeoutTicker) { clearInterval(this.timeoutTicker); this.timeoutTicker = null }
+    },
+    async openTimeout() {
+      this.timeoutTeamSel = null
+      this.timeoutVideoSel = null
+      this.spotList = []
+      this.spotDurations = {}
+      this.showTimeoutModal = true
+      try {
+        const res = await fetch('/spot/list')
+        this.spotList = await res.json()
+      } catch {
+        this.spotList = []
+      }
+      this.spotList.forEach(file => this.probeDurata(file))
+    },
+    probeDurata(file) {
+      const video = document.createElement('video')
+      video.preload = 'metadata'
+      video.onloadedmetadata = () => {
+        this.spotDurations = { ...this.spotDurations, [file]: video.duration }
+      }
+      video.src = '/spot/' + encodeURIComponent(file)
+    },
+    formatDurata(sec) {
+      return typeof sec === 'number' && isFinite(sec) ? `${Math.round(sec)}s` : '…'
+    },
+    avviaTimeout() {
+      if (!this.timeoutTeamSel) return
+      this.sendAction({ type: 'startTimeout', team: this.timeoutTeamSel, video: this.timeoutVideoSel })
+      this.showTimeoutModal = false
+    },
+    terminaTimeout() {
+      this.sendAction({ type: 'stopTimeout' })
+    },
   },
 }
 </script>
@@ -1070,4 +1177,37 @@ export default {
   padding: 8px 0;
   font-weight: 600;
 }
+
+/* Modal avvio time out */
+.dialog-timeout {
+  max-height: 85vh;
+  overflow-y: auto;
+}
+.btn-set.team-sel-active {
+  box-shadow: 0 0 0 3px rgba(255,255,255,0.6) inset;
+}
+.timeout-video-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  max-height: 40vh;
+  overflow-y: auto;
+}
+.timeout-video-option {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  background: rgba(255,255,255,0.06);
+  border: 1px solid rgba(255,255,255,0.12);
+  border-radius: 10px;
+  padding: 10px 12px;
+  font-size: 14px;
+  cursor: pointer;
+}
+.video-duration {
+  margin-left: auto;
+  color: #aaa;
+  font-size: 12px;
+  font-variant-numeric: tabular-nums;
+}
 </style>