Add auth

src/migrations/2025125_initial.sql

@@ -0,0 +1,30 @@
+-- Create users table
+CREATE TABLE users (
+    id SERIAL PRIMARY KEY,
+    email VARCHAR(255) NOT NULL UNIQUE,
+    password_hash TEXT NOT NULL
+);
+
+-- Create links table with user_id from the start
+CREATE TABLE links (
+    id SERIAL PRIMARY KEY,
+    original_url TEXT NOT NULL,
+    short_code VARCHAR(8) NOT NULL UNIQUE,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    clicks BIGINT NOT NULL DEFAULT 0,
+    user_id INTEGER REFERENCES users(id)
+);
+
+-- Create clicks table for tracking
+CREATE TABLE clicks (
+    id SERIAL PRIMARY KEY,
+    link_id INTEGER REFERENCES links(id),
+    source TEXT,
+    query_source TEXT,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX idx_short_code ON links(short_code);
+CREATE INDEX idx_user_id ON links(user_id);
+CREATE INDEX idx_link_id ON clicks(link_id);