feat: inherit valueFrom/envFrom env from Deployment; prefer paperclip container

- SelfPodInfo gains inheritedEnvValueFrom (V1EnvVar[]) and inheritedEnvFrom (V1EnvFromSource[])
- Container selection now prefers the container named "paperclip", falls back to first
- buildJobManifest appends valueFrom env vars (skipping names already overridden)
  and sets envFrom on the opencode container when present
- Tests updated: mock updated, 5 new cases covering secretKeyRef forwarding,
  dedup, envFrom passthrough, and empty-envFrom omission

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/server/execute.test.ts

@@ -23,6 +23,8 @@ const MOCK_SELF_POD = {
   pvcClaimName: null,
   secretVolumes: [],
   inheritedEnv: {},
+  inheritedEnvValueFrom: [],
+  inheritedEnvFrom: [],
 };
 
 const MOCK_JOB = {