Fix DeviceProfile.signals type to reflect stored shape (#23)

Middleware endpoints strip userAgent and viewport before storing, but
DeviceProfile.signals was typed as RawSignals — making TypeScript claim
those fields might exist when they never will. Add StoredSignals type
alias (Omit<RawSignals, 'userAgent' | 'viewport'>) and use it instead.

Author: SimplyLiz

packages/types/src/index.ts

@@ -2,6 +2,7 @@ export type {
   ConnectionInfo,
   Viewport,
   RawSignals,
+  StoredSignals,
   DeviceProfile,
   CpuTier,
   MemoryTier,

packages/types/src/profile.ts

@@ -23,12 +23,14 @@ export interface RawSignals {
   battery?: { level: number; charging: boolean };
 }
 
+export type StoredSignals = Omit<RawSignals, 'userAgent' | 'viewport'>;
+
 export interface DeviceProfile {
   schemaVersion: 1;
   sessionToken: string;
   createdAt: string;
   expiresAt: string;
-  signals: RawSignals;
+  signals: StoredSignals;
 }
 
 export type CpuTier = 'low' | 'mid' | 'high';