🚚 feat(context): integrate context app into monorepo

Restructure the context app (formerly basetext) to follow the monorepo
pattern with proper workspace configuration.

Changes:
- Move app files to apps/context/apps/mobile/
- Rename package to @context/mobile
- Update bundle ID to com.manacore.context
- Create pnpm-workspace.yaml for project workspace
- Add dev scripts to root package.json
- Update CLAUDE.md with project documentation

The app structure is prepared for future web/backend additions.

Note: Existing TypeScript errors in the original codebase are preserved.
These should be fixed in a follow-up PR.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/context/apps/mobile/migrations/add_monetization_system.sql

@@ -0,0 +1,100 @@
+-- Monetization System Migration Script
+
+-- 1. Erweiterung der users-Tabelle
+ALTER TABLE users
+ADD COLUMN IF NOT EXISTS token_balance INTEGER DEFAULT 0,
+ADD COLUMN IF NOT EXISTS monthly_free_tokens INTEGER DEFAULT 1000,
+ADD COLUMN IF NOT EXISTS last_token_reset TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+ADD COLUMN IF NOT EXISTS revenue_cat_id TEXT,
+ADD COLUMN IF NOT EXISTS current_entitlement TEXT;
+
+-- 2. Neue Tabelle token_transactions
+CREATE TABLE IF NOT EXISTS token_transactions (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  user_id UUID REFERENCES users(id) ON DELETE CASCADE,
+  amount INTEGER NOT NULL,
+  transaction_type TEXT NOT NULL,
+  model_used TEXT,
+  prompt_tokens INTEGER,
+  completion_tokens INTEGER,
+  total_tokens INTEGER,
+  cost_usd DECIMAL(10, 6),
+  document_id UUID REFERENCES documents(id) ON DELETE SET NULL,
+  created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS token_transactions_user_id_idx ON token_transactions(user_id);
+CREATE INDEX IF NOT EXISTS token_transactions_created_at_idx ON token_transactions(created_at);
+
+-- 3. Neue Tabelle model_prices
+CREATE TABLE IF NOT EXISTS model_prices (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  model_name TEXT UNIQUE NOT NULL,
+  input_price_per_1k_tokens DECIMAL(10, 6) NOT NULL,
+  output_price_per_1k_tokens DECIMAL(10, 6) NOT NULL,
+  tokens_per_dollar INTEGER NOT NULL,
+  created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Trigger für automatische Aktualisierung des updated_at-Feldes für model_prices
+CREATE OR REPLACE FUNCTION update_model_prices_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+  NEW.updated_at = NOW();
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER update_model_prices_updated_at
+BEFORE UPDATE ON model_prices
+FOR EACH ROW
+EXECUTE FUNCTION update_model_prices_updated_at();
+
+-- Beispieleinträge für model_prices
+INSERT INTO model_prices (model_name, input_price_per_1k_tokens, output_price_per_1k_tokens, tokens_per_dollar)
+VALUES 
+('gpt-4.1', 0.01, 0.03, 50000),
+('gpt-3.5-turbo', 0.0015, 0.002, 300000),
+('gemini-pro', 0.00125, 0.00375, 400000),
+('gemini-flash', 0.00025, 0.0005, 800000)
+ON CONFLICT (model_name) DO NOTHING;
+
+-- 4. Optionale Tabelle token_packages (falls RevenueCat nicht verwendet wird)
+CREATE TABLE IF NOT EXISTS token_packages (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  name TEXT NOT NULL,
+  token_amount INTEGER NOT NULL,
+  price_usd DECIMAL(10, 2) NOT NULL,
+  is_active BOOLEAN DEFAULT TRUE,
+  created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Beispieleinträge für token_packages
+INSERT INTO token_packages (name, token_amount, price_usd)
+VALUES 
+('Kleines Paket', 5000, 4.99),
+('Mittleres Paket', 15000, 9.99),
+('Großes Paket', 50000, 24.99)
+ON CONFLICT DO NOTHING;
+
+-- RLS-Policies für die neuen Tabellen
+ALTER TABLE token_transactions ENABLE ROW LEVEL SECURITY;
+ALTER TABLE model_prices ENABLE ROW LEVEL SECURITY;
+ALTER TABLE token_packages ENABLE ROW LEVEL SECURITY;
+
+-- Benutzer können nur ihre eigenen Token-Transaktionen sehen
+CREATE POLICY "Benutzer können nur ihre eigenen Token-Transaktionen sehen" ON token_transactions
+  FOR SELECT USING (user_id = auth.uid());
+
+-- Benutzer können nur ihre eigenen Token-Transaktionen einfügen
+CREATE POLICY "Benutzer können nur ihre eigenen Token-Transaktionen einfügen" ON token_transactions
+  FOR INSERT WITH CHECK (user_id = auth.uid());
+
+-- Alle Benutzer können die Modellpreise sehen
+CREATE POLICY "Alle Benutzer können die Modellpreise sehen" ON model_prices
+  FOR SELECT USING (true);
+
+-- Alle Benutzer können die Token-Pakete sehen
+CREATE POLICY "Alle Benutzer können die Token-Pakete sehen" ON token_packages
+  FOR SELECT USING (true);