Initial commit: Full Crawl API implementation

crates/db/migrations/001_init.sql

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+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+CREATE TABLE users (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    email VARCHAR(255) UNIQUE NOT NULL,
+    password_hash VARCHAR(255),
+    google_id VARCHAR(255) UNIQUE,
+    credits BIGINT NOT NULL DEFAULT 30,
+    tier VARCHAR(50) NOT NULL DEFAULT 'free',
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE api_keys (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    key_hash VARCHAR(255) UNIQUE NOT NULL,
+    name VARCHAR(255) NOT NULL DEFAULT 'Default',
+    last_used_at TIMESTAMPTZ,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE usage_logs (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    api_key_id UUID NOT NULL REFERENCES api_keys(id) ON DELETE CASCADE,
+    endpoint VARCHAR(100) NOT NULL,
+    url TEXT NOT NULL,
+    status VARCHAR(50) NOT NULL,
+    credits_used BIGINT NOT NULL DEFAULT 1,
+    duration_ms BIGINT NOT NULL DEFAULT 0,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_api_keys_user_id ON api_keys(user_id);
+CREATE INDEX idx_api_keys_key_hash ON api_keys(key_hash);
+CREATE INDEX idx_usage_logs_user_id ON usage_logs(user_id);
+CREATE INDEX idx_usage_logs_created_at ON usage_logs(created_at);

crates/db/migrations/002_oauth_and_subscriptions.sql

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+CREATE TABLE oauth_accounts (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    provider VARCHAR(50) NOT NULL,
+    provider_account_id VARCHAR(255) NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    UNIQUE(provider, provider_account_id)
+);
+
+CREATE INDEX idx_oauth_accounts_user_id ON oauth_accounts(user_id);
+
+CREATE TABLE subscriptions (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    stripe_customer_id VARCHAR(255),
+    stripe_subscription_id VARCHAR(255),
+    stripe_price_id VARCHAR(255),
+    status VARCHAR(50) NOT NULL DEFAULT 'incomplete',
+    tier VARCHAR(50) NOT NULL DEFAULT 'free',
+    current_period_start TIMESTAMPTZ,
+    current_period_end TIMESTAMPTZ,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_subscriptions_user_id ON subscriptions(user_id);
+CREATE INDEX idx_subscriptions_stripe_customer ON subscriptions(stripe_customer_id);

crates/db/migrations/003_teams.sql

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+CREATE TABLE teams (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    name VARCHAR(255) NOT NULL,
+    slug VARCHAR(255) UNIQUE NOT NULL,
+    owner_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE team_members (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    team_id UUID NOT NULL REFERENCES teams(id) ON DELETE CASCADE,
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    role VARCHAR(50) NOT NULL DEFAULT 'member',
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    UNIQUE(team_id, user_id)
+);
+
+CREATE INDEX idx_teams_owner ON teams(owner_id);
+CREATE INDEX idx_team_members_team ON team_members(team_id);
+CREATE INDEX idx_team_members_user ON team_members(user_id);