set up for deployment

backend/scripts/006_add_oauth_tokens.sql

@@ -0,0 +1,20 @@
+-- Migration: Add OAuth token storage
+-- This table stores OAuth2 access tokens and refresh tokens from external providers
+-- Used for refreshing user sessions without re-authentication
+
+CREATE TABLE IF NOT EXISTS oauth_tokens (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    provider VARCHAR(50) NOT NULL,
+    access_token TEXT NOT NULL,
+    refresh_token TEXT,
+    token_type VARCHAR(50) DEFAULT 'Bearer',
+    expires_at TIMESTAMPTZ NOT NULL,
+    scope TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+
+    CONSTRAINT oauth_tokens_user_id_provider_key UNIQUE (user_id, provider)
+);
+
+CREATE INDEX idx_oauth_tokens_user_id ON oauth_tokens(user_id);