feat: add K8s API server, orchestrator abstraction, and CI pipeline

- Add apps/api/ — Hono REST API server for managing pentest scans via K8s Jobs
  - POST/GET /api/scans, GET /api/scans/:id, cancel, report endpoints
  - Bearer token auth, Temporal client integration, K8s Job builder
  - Dockerfile, Kustomize manifests (Deployment, Service, RBAC)
- Add CLI orchestrator abstraction (docker.ts → Orchestrator interface)
  - DockerOrchestrator and K8sOrchestrator implementations
  - Backend detection via SHANNON_BACKEND env var or --backend flag
- Add CI workflow: type-check + lint on PR, build+push both images on main
- Switch all workflows to self-hosted runners (runners-farhoodliquor)
- Add shannon-api image build to release and release-beta workflows
- Add root infra/kustomization.yaml as Flux entry point
- Export PipelineProgress from @shannon/worker/pipeline

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/cli/src/commands/stop.ts

@@ -3,7 +3,7 @@
  */
 
 import * as p from '@clack/prompts';
-import { stopInfra, stopWorkers } from '../docker.js';
+import { getOrchestrator } from '../backend.js';
 
 export async function stop(clean: boolean): Promise<void> {
   if (clean) {
@@ -16,6 +16,7 @@ export async function stop(clean: boolean): Promise<void> {
     }
   }
 
-  stopWorkers();
-  stopInfra(clean);
+  const orchestrator = await getOrchestrator();
+  orchestrator.stopWorkers();
+  orchestrator.stopInfra(clean);
 }