feat(flightlab): sidebar, progress bars, skip speech, SimBridge telemetry & auth

- Add collapsible sidebar with phase stepper (jump between phases)
- Add SimBridge conditions panel in sidebar (live values, progress bars, targets)
- Add global progress bar (top edge, glowing) + phase-local TTS progress bar
- Add skip button to skip TTS speech while ATC is speaking
- Add skipSpeech() to audio composable (stops current Pizzicato sound)
- Wire up bridge data.post.ts with user auth (JWT) + example payload
- Add server-side telemetry store with pub/sub for Bridge→WS relay
- Extend WS handler with subscribe-telemetry message + userId tracking
- Extend sync composable with subscribeTelemetry() + onTelemetry() callback
- Add require-auth middleware to all flightlab pages
- Fix instructor station ECONNREFUSED via import.meta.client guard
- Add animations: phase transitions, button lists, fade-scale, check-pop, pulse

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/utils/flightlabTelemetry.ts

@@ -0,0 +1,35 @@
+/**
+ * In-memory telemetry store that bridges the HTTP POST endpoint
+ * with FlightLab WebSocket sessions.
+ *
+ * Flow: SimBridge → POST /api/bridge/data → telemetryStore → WS → Client
+ */
+
+type TelemetryListener = (userId: string, data: any) => void
+
+class FlightLabTelemetryStore {
+  /** Latest telemetry per userId */
+  private data = new Map<string, any>()
+  /** WebSocket listeners that get notified on new data */
+  private listeners = new Set<TelemetryListener>()
+
+  update(userId: string, telemetry: any) {
+    this.data.set(userId, { ...telemetry, timestamp: Date.now() })
+    // Notify all listeners (WebSocket handler subscribes here)
+    for (const listener of this.listeners) {
+      try { listener(userId, this.data.get(userId)) } catch {}
+    }
+  }
+
+  get(userId: string) {
+    return this.data.get(userId) ?? null
+  }
+
+  subscribe(listener: TelemetryListener) {
+    this.listeners.add(listener)
+    return () => { this.listeners.delete(listener) }
+  }
+}
+
+// Singleton — shared across all server handlers
+export const flightlabTelemetryStore = new FlightLabTelemetryStore()