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/scripts/validate-config.ts

@@ -0,0 +1,35 @@
+import { loadConfig, ConfigError } from "../src/lib/config/load";
+
+const configPathArg = process.argv[2];
+
+try {
+  const { config, configPath } = loadConfig(configPathArg);
+  console.log(
+    JSON.stringify({
+      ok: true,
+      configPath,
+      scriptCount: config.scripts.length,
+      authEnabled: config.auth.enabled,
+    }),
+  );
+  process.exit(0);
+} catch (error) {
+  if (error instanceof ConfigError) {
+    console.log(
+      JSON.stringify({
+        ok: false,
+        message: error.message,
+        issues: error.issues,
+      }),
+    );
+  } else {
+    console.log(
+      JSON.stringify({
+        ok: false,
+        message: (error as Error).message,
+        issues: [],
+      }),
+    );
+  }
+  process.exit(1);
+}