- config-schema: add instructionsFilePath UI field (Core group, text type)
- server/index.ts: set supportsInstructionsBundle=true, instructionsPathKey="instructionsFilePath"
- execute.ts: read instructionsFilePath file + desired skill markdown files from PVC; pass to buildJobManifest as instructionsContent / skillsBundleContent
- job-manifest.ts: accept instructionsContent + skillsBundleContent in JobBuildInput; prepend both to prompt via joinPromptSections; add instructionsChars + skillsBundleChars to promptMetrics
- index.ts: document instructionsFilePath and skills injection in agentConfigurationDoc
- CLAUDE.md: document skill materialization (ephemeral mode) and instructionsFilePath field
- Bump version to 0.1.18
Co-Authored-By: Paperclip <noreply@paperclip.ing>