Initial implementation of TriggerShell

A Python CLI (typer) that bootstraps Node/pnpm and launches a Next.js 16 web
app for running configured shell scripts: YAML config validated by a shared
Zod schema, dynamic per-script forms mapped to shadcn controls, argv-safe
execa execution with live WebSocket streaming, SQLite/Drizzle run history,
and optional argon2 session + API token auth.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/drizzle.config.ts

@@ -0,0 +1,7 @@
+import type { Config } from "drizzle-kit";
+
+export default {
+  schema: "./src/lib/db/schema.ts",
+  out: "./drizzle",
+  dialect: "sqlite",
+} satisfies Config;