docs: add comprehensive code comments, update README and TASKS, create training and troubleshooting guides

- Add JSDoc comments to API routes and business logic functions
- Update README.md with Phase 2 status and deployment/production notes
- Enhance TASKS.md with estimated timelines and dependencies
- Create docs/STAFF_TRAINING.md for team onboarding
- Create docs/CLIENT_ONBOARDING.md for customer experience
- Create docs/OPERATIONAL_PROCEDURES.md for daily operations
- Create docs/TROUBLESHOOTING.md for common setup issues
- Fix TypeScript errors in hq/page.tsx

lib/auth/context.tsx

@@ -14,6 +14,9 @@ type AuthContextType = {
 
 const AuthContext = createContext<AuthContextType | undefined>(undefined)
 
+/**
+ * AuthProvider component that manages authentication state and provides it to children.
+ */
 export function AuthProvider({ children }: { children: ReactNode }) {
   const [user, setUser] = useState<User | null>(null)
   const [session, setSession] = useState<Session | null>(null)
@@ -72,6 +75,9 @@ export function AuthProvider({ children }: { children: ReactNode }) {
   return <AuthContext.Provider value={value}>{children}</AuthContext.Provider>
 }
 
+/**
+ * useAuth hook that returns the current authentication context.
+ */
 export function useAuth() {
   const context = useContext(AuthContext)
   if (context === undefined) {