feat: Implement RSSI service for iOS and Web platforms

- Added IosRssiService to handle synthetic RSSI data for iOS.
- Created WebRssiService to simulate RSSI scanning on the web.
- Defined shared types for WifiNetwork and RssiService in rssi.service.ts.
- Introduced simulation service to generate synthetic sensing data.
- Implemented WebSocket service for real-time data handling with reconnection logic.
- Established Zustand stores for managing application state related to MAT and pose data.
- Developed theme context and utility functions for consistent styling and formatting.
- Added type definitions for various application entities including API responses and sensing data.
- Created utility functions for color mapping and URL validation.
- Configured TypeScript settings for the mobile application.

ui/mobile/src/stores/poseStore.ts

@@ -0,0 +1,71 @@
+import { create } from 'zustand';
+import { RingBuffer } from '@/utils/ringBuffer';
+import type { Classification, ConnectionStatus, FeatureSet, SensingFrame, SignalField } from '@/types/sensing';
+
+export interface PoseState {
+  connectionStatus: ConnectionStatus;
+  isSimulated: boolean;
+  lastFrame: SensingFrame | null;
+  rssiHistory: number[];
+  features: FeatureSet | null;
+  classification: Classification | null;
+  signalField: SignalField | null;
+  messageCount: number;
+  uptimeStart: number | null;
+  handleFrame: (frame: SensingFrame) => void;
+  setConnectionStatus: (status: ConnectionStatus) => void;
+  reset: () => void;
+}
+
+const MAX_RSSI_HISTORY = 60;
+const rssiHistory = new RingBuffer<number>(MAX_RSSI_HISTORY, (a, b) => a - b);
+
+export const usePoseStore = create<PoseState>((set) => ({
+  connectionStatus: 'disconnected',
+  isSimulated: false,
+  lastFrame: null,
+  rssiHistory: [],
+  features: null,
+  classification: null,
+  signalField: null,
+  messageCount: 0,
+  uptimeStart: null,
+
+  handleFrame: (frame: SensingFrame) => {
+    if (typeof frame.features?.mean_rssi === 'number') {
+      rssiHistory.push(frame.features.mean_rssi);
+    }
+
+    set((state) => ({
+      lastFrame: frame,
+      features: frame.features,
+      classification: frame.classification,
+      signalField: frame.signal_field,
+      messageCount: state.messageCount + 1,
+      uptimeStart: state.uptimeStart ?? Date.now(),
+      rssiHistory: rssiHistory.toArray(),
+    }));
+  },
+
+  setConnectionStatus: (status: ConnectionStatus) => {
+    set({
+      connectionStatus: status,
+      isSimulated: status === 'simulated',
+    });
+  },
+
+  reset: () => {
+    rssiHistory.clear();
+    set({
+      connectionStatus: 'disconnected',
+      isSimulated: false,
+      lastFrame: null,
+      rssiHistory: [],
+      features: null,
+      classification: null,
+      signalField: null,
+      messageCount: 0,
+      uptimeStart: null,
+    });
+  },
+}));