first commit

backend/database/migrations/001_create_migrations_table.sql

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+-- Migration tracking table
+-- This table keeps track of which migrations have been applied
+CREATE TABLE IF NOT EXISTS schema_migrations (
+    id SERIAL PRIMARY KEY,
+    filename VARCHAR(255) UNIQUE NOT NULL,
+    applied_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Create index for faster lookups
+CREATE INDEX IF NOT EXISTS idx_schema_migrations_filename ON schema_migrations(filename);