Initial import with modified Dockerfile for env-based config generation

migrations/001_initial.sql

@@ -0,0 +1,18 @@
+-- Initial schema for Gitea Notification Hub
+-- This file is for documentation purposes; migrations are run programmatically
+
+CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    gitea_username TEXT UNIQUE,
+    gitea_id INTEGER,
+    email TEXT UNIQUE,
+    full_name TEXT,
+    slack_id TEXT,
+    slack_name TEXT,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_users_email ON users(email);
+CREATE INDEX IF NOT EXISTS idx_users_gitea_username ON users(gitea_username);
+CREATE INDEX IF NOT EXISTS idx_users_slack_id ON users(slack_id);