feat: Apple Watch app + Paywall + Privacy Policy + rebranding

## Major Features
- Apple Watch companion app (6 phases complete)
  - WatchConnectivity iPhone ↔ Watch
  - HealthKit integration (HR, calories)
  - SwiftUI premium UI
  - 9 complication types
  - Always-On Display support

- Paywall screen with RevenueCat integration
- Privacy Policy screen
- App rebranding: tabatago → TabataFit
- Bundle ID: com.millianlmx.tabatafit

## Changes
- New: ios/TabataFit Watch App/ (complete Watch app)
- New: app/paywall.tsx (subscription UI)
- New: app/privacy.tsx (privacy policy)
- New: src/features/watch/ (Watch sync hooks)
- New: admin-web/ (admin dashboard)
- Updated: app.json, package.json (branding)
- Updated: profile.tsx (paywall + privacy links)
- Updated: i18n translations (EN/FR/DE/ES)
- New: app icon 1024x1024

## Watch App Files
- TabataFitWatchApp.swift (entry point)
- ContentView.swift (premium UI)
- HealthKitManager.swift (HR + calories)
- WatchSessionManager.swift (communication)
- Complications/ (WidgetKit)
- UserDefaults+Shared.swift (data sharing)

admin-web/lib/supabase.ts

@@ -0,0 +1,130 @@
+import { createClient } from '@supabase/supabase-js'
+
+const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL === 'your_supabase_project_url' 
+  ? 'http://localhost:54321' 
+  : (process.env.NEXT_PUBLIC_SUPABASE_URL || 'http://localhost:54321')
+const supabaseKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY === 'your_supabase_anon_key'
+  ? 'placeholder-key'
+  : (process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY || 'placeholder-key')
+
+export const supabase = createClient(supabaseUrl, supabaseKey)
+
+export const isSupabaseConfigured = () => {
+  const url = process.env.NEXT_PUBLIC_SUPABASE_URL
+  return url !== 'your_supabase_project_url' && url !== 'http://localhost:54321' && !!url
+}
+
+export type Json =
+  | string
+  | number
+  | boolean
+  | null
+  | { [key: string]: Json | undefined }
+  | Json[]
+
+export interface Database {
+  public: {
+    Tables: {
+      workouts: {
+        Row: {
+          id: string
+          title: string
+          trainer_id: string
+          category: 'full-body' | 'core' | 'upper-body' | 'lower-body' | 'cardio'
+          level: 'Beginner' | 'Intermediate' | 'Advanced'
+          duration: number
+          calories: number
+          rounds: number
+          prep_time: number
+          work_time: number
+          rest_time: number
+          equipment: string[]
+          music_vibe: 'electronic' | 'hip-hop' | 'pop' | 'rock' | 'chill'
+          exercises: { name: string; duration: number }[]
+          thumbnail_url: string | null
+          video_url: string | null
+          is_featured: boolean
+          created_at: string
+          updated_at: string
+        }
+        Insert: {
+          id?: string
+          title: string
+          trainer_id: string
+          category: 'full-body' | 'core' | 'upper-body' | 'lower-body' | 'cardio'
+          level: 'Beginner' | 'Intermediate' | 'Advanced'
+          duration: number
+          calories: number
+          rounds: number
+          prep_time: number
+          work_time: number
+          rest_time: number
+          equipment?: string[]
+          music_vibe: 'electronic' | 'hip-hop' | 'pop' | 'rock' | 'chill'
+          exercises: { name: string; duration: number }[]
+          thumbnail_url?: string | null
+          video_url?: string | null
+          is_featured?: boolean
+        }
+        Update: Partial<Database['public']['Tables']['workouts']['Insert']>
+      }
+      trainers: {
+        Row: {
+          id: string
+          name: string
+          specialty: string
+          color: string
+          avatar_url: string | null
+          workout_count: number
+          created_at: string
+          updated_at: string
+        }
+        Insert: {
+          id?: string
+          name: string
+          specialty: string
+          color: string
+          avatar_url?: string | null
+          workout_count?: number
+        }
+        Update: Partial<Omit<Database['public']['Tables']['trainers']['Insert'], 'id'>>
+      }
+      collections: {
+        Row: {
+          id: string
+          title: string
+          description: string
+          icon: string
+          gradient: string[] | null
+          created_at: string
+          updated_at: string
+        }
+        Insert: {
+          id?: string
+          title: string
+          description: string
+          icon: string
+          gradient?: string[] | null
+        }
+        Update: Partial<Omit<Database['public']['Tables']['collections']['Insert'], 'id'>>
+      }
+      collection_workouts: {
+        Row: {
+          id: string
+          collection_id: string
+          workout_id: string
+          sort_order: number
+        }
+      }
+      admin_users: {
+        Row: {
+          id: string
+          email: string
+          role: 'admin' | 'editor'
+          created_at: string
+          last_login: string | null
+        }
+      }
+    }
+  }
+}

admin-web/lib/utils.ts

@@ -0,0 +1,6 @@
+import { clsx, type ClassValue } from "clsx"
+import { twMerge } from "tailwind-merge"
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs))
+}