feat: Ctrl+1..5 terminal shortcuts and improved AgentBadge indicator

- Ctrl+1 through Ctrl+5 switch to open terminals by index
- Opens floating window automatically if closed
- AgentBadge shows active terminal state dot and index (2/3)
- Dropdown items display shortcut numbers for discoverability

frontend/src/components/FloatingTranscriptDebug.vue

@@ -432,11 +432,25 @@ watch(isOpen, async (open) => {
 })
 
 // ============================================================================
-// ZOOM KEYBOARD HANDLER
+// KEYBOARD SHORTCUTS
 // ============================================================================
 
-function handleZoomKey(e: KeyboardEvent) {
-  if (!isOpen.value || !e.ctrlKey) return
+function handleKeydown(e: KeyboardEvent) {
+  if (!e.ctrlKey) return
+
+  // Ctrl+1..5 → switch to terminal by index
+  const num = parseInt(e.key)
+  if (num >= 1 && num <= 5) {
+    const slot = openTerminals.value[num - 1]
+    if (!slot) return
+    e.preventDefault()
+    if (!isOpen.value) isOpen.value = true
+    switchToTerminal(slot.sessionId)
+    return
+  }
+
+  // Zoom shortcuts (only when open)
+  if (!isOpen.value) return
   if (e.key === '+' || e.key === '=') {
     e.preventDefault()
     zoom.value = Math.min(2, +(zoom.value + 0.1).toFixed(1))
@@ -453,7 +467,7 @@ function handleZoomKey(e: KeyboardEvent) {
 onMounted(async () => {
   checkMobile()
   window.addEventListener('resize', checkMobile)
-  document.addEventListener('keydown', handleZoomKey)
+  document.addEventListener('keydown', handleKeydown)
   oceanLifeTimer = setInterval(tickOceanLife, 20000)
   tickOceanLife()
   await voice.init()
@@ -463,7 +477,7 @@ onBeforeUnmount(() => {
   if (oceanLifeTimer) clearInterval(oceanLifeTimer)
   disconnectRealtime()
   voice.cleanup()
-  document.removeEventListener('keydown', handleZoomKey)
+  document.removeEventListener('keydown', handleKeydown)
   document.removeEventListener('mousemove', onDrag)
   document.removeEventListener('mouseup', stopDrag)
   document.removeEventListener('mousemove', onResize)
@@ -1203,6 +1217,8 @@ onBeforeUnmount(() => {
   color: rgba(255,255,255,0.85);
   font-family: 'Courier New', monospace;
   font-size: 12px;
+  line-height: 1.5;
+  field-sizing: content;
 }
 
 /* Send button: pixel art daytime ocean, no border */

frontend/src/components/transcript-debug/AgentBadge.vue

@@ -1,14 +1,23 @@
 <script setup lang="ts">
-import { ref, onMounted, onBeforeUnmount } from 'vue'
+import { ref, computed, onMounted, onBeforeUnmount } from 'vue'
 import type { TerminalSlot } from '@/types/transcript-debug'
 
-defineProps<{
+const props = defineProps<{
   agent: string
   connected: boolean
   terminals: TerminalSlot[]
   activeSessionId: string | null
 }>()
 
+const activeIndex = computed(() => {
+  if (!props.activeSessionId) return -1
+  return props.terminals.findIndex(t => t.sessionId === props.activeSessionId)
+})
+
+const activeSlot = computed(() =>
+  activeIndex.value >= 0 ? props.terminals[activeIndex.value] : null
+)
+
 const emit = defineEmits<{
   'switch-terminal': [sessionId: string]
   'close-terminal': [sessionId: string]
@@ -51,8 +60,9 @@ onBeforeUnmount(() => document.removeEventListener('mousedown', onClickOutside))
 
 <template>
   <div ref="wrapperRef" class="agent-badge-wrapper" :class="{ connected }" @click="toggle">
+    <span v-if="activeSlot" class="state-dot badge-dot" :style="{ background: slotColor(activeSlot) }" />
     <span class="agent-label">{{ agent }}</span>
-    <span v-if="terminals.length > 1" class="term-count">{{ terminals.length }}</span>
+    <span v-if="terminals.length" class="term-count">{{ activeIndex >= 0 ? `${activeIndex + 1}/${terminals.length}` : terminals.length }}</span>
     <svg class="caret" :class="{ open: isOpen }" width="6" height="6" viewBox="0 0 6 6" shape-rendering="crispEdges">
       <rect x="2" y="4" width="2" height="2" fill="currentColor"/>
       <rect x="0" y="2" width="2" height="2" fill="currentColor"/>
@@ -62,12 +72,13 @@ onBeforeUnmount(() => document.removeEventListener('mousedown', onClickOutside))
       <div v-if="isOpen" class="dropdown">
         <div v-if="terminals.length === 0" class="dropdown-item empty">No terminals</div>
         <div
-          v-for="t in terminals"
+          v-for="(t, idx) in terminals"
           :key="t.sessionId"
           class="dropdown-item terminal-item"
           :class="{ active: t.sessionId === activeSessionId }"
           @click.stop="handleSwitch(t.sessionId)"
         >
+          <span class="shortcut-key">{{ idx + 1 }}</span>
           <span class="state-dot" :style="{ background: slotColor(t) }" />
           <span class="terminal-label">{{ t.label }}</span>
           <button class="close-btn" @click="handleClose($event, t.sessionId)" title="Close terminal">
@@ -125,6 +136,12 @@ onBeforeUnmount(() => document.removeEventListener('mousedown', onClickOutside))
   color: #86efac;
 }
 
+.badge-dot {
+  width: 5px;
+  height: 5px;
+  flex-shrink: 0;
+}
+
 .term-count {
   font-size: 8px;
   font-weight: 700;
@@ -203,6 +220,20 @@ onBeforeUnmount(() => document.removeEventListener('mousedown', onClickOutside))
   color: rgba(255, 255, 255, 0.8);
 }
 
+.shortcut-key {
+  font-size: 8px;
+  font-weight: 700;
+  font-family: 'Courier New', monospace;
+  color: rgba(255, 255, 255, 0.2);
+  min-width: 10px;
+  text-align: center;
+  flex-shrink: 0;
+}
+
+.dropdown-item.terminal-item.active .shortcut-key {
+  color: rgba(165, 180, 252, 0.7);
+}
+
 .state-dot {
   width: 5px;
   height: 5px;