feat: add provisioning lifecycle actions

Rename Deployments to Provisioning with compatible redirects and APIs. Add durable Start, Restart, Stop, and Rebuild operations alongside Create and Destroy; rebuild wipes the instance and recreates it in the same slot and port.

Add lifecycle, migration, recovery, and Komodo command tests. Type checks and production build pass; the full suite retains a telemetry assertion failure reproduced on the unchanged branch.

Refs #39

src/routes/api/servers/[name]/+server.ts

@@ -9,7 +9,7 @@ export async function DELETE({ params }: { params: { name: string } }) {
     }
     const result = await destroyServer(name);
     if (!result.ok) {
-        const status = result.kind === 'not-found' ? 404 : 500;
+        const status = result.kind === 'not-found' ? 404 : result.kind === 'conflict' ? 409 : 500;
         return json({ ok: false, error: result.message, kind: result.kind, warnings: result.warnings }, { status });
     }
     void kick().catch((err) => console.error('[destroy] worker kick failed:', err));