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K8s Job pods were starting without the Paperclip skill loaded, so agents could not find their heartbeat procedure and reported "no issue content in my workspace" on every wake. Root cause: claude_local materialises skills into a PVC-backed prompt-bundle directory and passes --add-dir to Claude, but claude_k8s did neither. Changes: - Add src/server/prompt-cache.ts with prepareClaudePromptBundle (ported from adapter-claude-local). Writes skill symlinks and the agent's instructions file into a content-addressed bundle directory under the shared PVC (/paperclip/instances/.../claude-prompt-cache/<hash>/). - execute.ts: read desired skills and instructions file before building the Job manifest, then call prepareClaudePromptBundle and pass the resulting bundle to buildJobManifest. - job-manifest.ts: accept optional promptBundle in JobBuildInput; when present, pass --add-dir <bundle.addDir> and use bundle.instructionsFilePath for --append-system-prompt-file. Also fix: skip --append-system-prompt-file on session resumes to avoid wasting tokens on re-injection. - skills.ts: correct the detail string to reflect actual materialisation. - job-manifest.test.ts: add 5 new tests covering --add-dir injection, bundle path preference, session-resume skipping, and fallback behaviour. Co-Authored-By: Paperclip <noreply@paperclip.ing>