Use golang migrate for migrations

server/internal/db/migrations/001_initial_schema.up.sql

@@ -0,0 +1,59 @@
+-- 001_initial_schema.up.sql
+-- Create users table
+CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTO_INCREMENT,
+    email TEXT NOT NULL UNIQUE,
+    display_name TEXT,
+    password_hash TEXT NOT NULL,
+    role TEXT NOT NULL CHECK(role IN ('admin', 'editor', 'viewer')),
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    last_workspace_id INTEGER
+);
+
+-- Create workspaces table with integrated settings
+CREATE TABLE IF NOT EXISTS workspaces (
+    id INTEGER PRIMARY KEY AUTO_INCREMENT,
+    user_id INTEGER NOT NULL,
+    name TEXT NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    last_opened_file_path TEXT,
+    -- Settings fields
+    theme TEXT NOT NULL DEFAULT 'light' CHECK(theme IN ('light', 'dark')),
+    auto_save BOOLEAN NOT NULL DEFAULT 0,
+    git_enabled BOOLEAN NOT NULL DEFAULT 0,
+    git_url TEXT,
+    git_user TEXT,
+    git_token TEXT,
+    git_auto_commit BOOLEAN NOT NULL DEFAULT 0,
+    git_commit_msg_template TEXT DEFAULT '${action} ${filename}',
+    git_commit_name TEXT,
+    git_commit_email TEXT,
+    show_hidden_files BOOLEAN NOT NULL DEFAULT 0,
+    created_by INTEGER REFERENCES users(id),
+    updated_by INTEGER REFERENCES users(id),
+    updated_at TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users (id)
+);
+
+-- Create sessions table for authentication
+CREATE TABLE IF NOT EXISTS sessions (
+    id TEXT PRIMARY KEY,
+    user_id INTEGER NOT NULL,
+    refresh_token TEXT NOT NULL,
+    expires_at TIMESTAMP NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE CASCADE
+);
+
+-- Create system_settings table for application settings
+CREATE TABLE IF NOT EXISTS system_settings (
+    key TEXT PRIMARY KEY,
+    value TEXT NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Create indexes for performance
+CREATE INDEX idx_sessions_user_id ON sessions(user_id);
+CREATE INDEX idx_sessions_expires_at ON sessions(expires_at);
+CREATE INDEX idx_sessions_refresh_token ON sessions(refresh_token);