Skills can now declare API credentials in YAML frontmatter (SkillCredentialSpec,
SkillCredentialLocation, SkillOAuthConfig, ProviderRefreshStrategy). Valid specs
are registered into SharedCredentialRegistry at startup; the HttpTool auto-injects
credentials for matching hosts — same zero-exposure model as WASM tools.
HTTP tool security hardening:
- Block LLM-provided auth headers for hosts with registered credentials
- Return structured authentication_required error for missing credentials
- Strip sensitive response headers (Set-Cookie, WWW-Authenticate, Authorization)
- Scan response body through LeakDetector before returning to LLM
Mission capability leases: registered mission_create/list/fire/pause/resume/delete
as a "missions" capability so threads receive leases. Removed routine_* aliases
from effect adapter — descriptions mention "routine" for LLM intent mapping.
Includes 10 integration tests (tests/skill_credential_injection.rs) covering
the full pipeline: YAML parsing → validation → registry → HttpTool wiring →
per-user isolation.
Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>
