docs(api): bring OpenAPI spec to route parity, dedupe client types

openapi.yaml: 29 -> 114 paths / 154 operations covering every mounted
route, including root probes (/live, /health, /ready) and /api/agents/*
token routes via per-path servers overrides. Schemas corrected against
the real Go structs (Service, GitProvider/GitRepository/GitBranch,
NodeAgent capabilities/resources, HostMonitoring, UpgradeStatus,
service metrics, project stats); stale source/build_config contract and
phantom ServiceSource/BuildConfig/ResourceConfig schemas removed.
Proxmox handlers are never registered - intentionally undocumented.

api-client.ts: raw wire types now alias generated schemas
(ServiceVariable, UpgradeStatus, HostMonitoring, NodeAgent, Service,
ServiceMetrics, Git*); CreateServiceInput/CreateUserInput use the
generated request types. CamelCase view models and normalizers remain -
they are the frontend contract, not duplication.

Frontend gate green: tsc, eslint, vitest, vite build.

Authored By: TDvorak <[email protected]>

app/frontend/src/features/projects/pages/ProjectsPage.tsx

@@ -22,7 +22,7 @@ const demoProjects: ProjectEntity[] = [
     description: 'Sample project with mock services for UI preview.',
     createdAt: new Date(Date.now() - 14 * 86_400_000).toISOString(),
     updatedAt: new Date().toISOString(),
-    stats: { service_count: 5, deployment_count: 12, running_services: 5 },
+    stats: { service_count: 5, deployment_count: 12, running_services: 5, last_deployment: null },
   },
   {
     id: 'project-staging',
@@ -30,7 +30,7 @@ const demoProjects: ProjectEntity[] = [
     description: 'Pre-production environment for testing new releases.',
     createdAt: new Date(Date.now() - 7 * 86_400_000).toISOString(),
     updatedAt: new Date(Date.now() - 2 * 86_400_000).toISOString(),
-    stats: { service_count: 2, deployment_count: 5, running_services: 1 },
+    stats: { service_count: 2, deployment_count: 5, running_services: 1, last_deployment: null },
   },
 ];