feat(db): don't use weird pgsql extension to generate uuids, require postgres 13+

migrations/20240101000000_initial_schema.sql

@@ -1,10 +1,9 @@
 -- Create extensions
-CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
 CREATE EXTENSION IF NOT EXISTS "pg_trgm";
 
 -- Create users table
 CREATE TABLE IF NOT EXISTS users (
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
     username VARCHAR(255) UNIQUE NOT NULL,
     email VARCHAR(255) UNIQUE NOT NULL,
     password_hash VARCHAR(255) NOT NULL,
@@ -14,7 +13,7 @@ CREATE TABLE IF NOT EXISTS users (
 
 -- Create documents table
 CREATE TABLE IF NOT EXISTS documents (
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
     filename VARCHAR(255) NOT NULL,
     original_filename VARCHAR(255) NOT NULL,
     file_path VARCHAR(500) NOT NULL,
@@ -47,7 +46,7 @@ CREATE INDEX IF NOT EXISTS idx_documents_ocr_word_count ON documents(ocr_word_co
 
 -- Create settings table
 CREATE TABLE IF NOT EXISTS settings (
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
     user_id UUID REFERENCES users(id) ON DELETE CASCADE UNIQUE,
     ocr_language VARCHAR(10) DEFAULT 'eng',
     concurrent_ocr_jobs INT DEFAULT 4,

migrations/20240101000001_add_ocr_queue.sql

@@ -1,6 +1,6 @@
 -- Add OCR queue table for robust processing
 CREATE TABLE IF NOT EXISTS ocr_queue (
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
     document_id UUID REFERENCES documents(id) ON DELETE CASCADE,
     status VARCHAR(20) DEFAULT 'pending',
     priority INT DEFAULT 5,
@@ -31,7 +31,7 @@ ALTER TABLE documents ADD COLUMN IF NOT EXISTS ocr_error TEXT;
 ALTER TABLE documents ADD COLUMN IF NOT EXISTS ocr_completed_at TIMESTAMPTZ;
 
 CREATE TABLE IF NOT EXISTS ocr_metrics (
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
     date DATE DEFAULT CURRENT_DATE,
     hour INT DEFAULT EXTRACT(HOUR FROM NOW()),
     total_processed INT DEFAULT 0,

migrations/20240101000010_notifications.sql

@@ -1,6 +1,6 @@
 -- Create notifications table for backend-to-frontend notifications
 CREATE TABLE IF NOT EXISTS notifications (
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
     user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
     notification_type VARCHAR(20) NOT NULL CHECK (notification_type IN ('success', 'error', 'info', 'warning')),
     title VARCHAR(255) NOT NULL,