Adds three optional fields to OperationContext:
- jobId?: number — the currently running Minion job id
- subagentId?: number — the owning subagent job id for tool-dispatched calls
- viaSubagent?: boolean — FAIL-CLOSED flag for agent-path gating
put_page now enforces a namespace rule when invoked on the subagent tool
dispatch path (viaSubagent=true): writes MUST target
`wiki/agents/<subagentId>/...`. Anchored, slash-boundary enforced so a
collision like `wiki/agents/12evil/...` can't impersonate subagent 12.
The check runs BEFORE the dry-run short-circuit so preview calls surface
the same rejection. Fail-closed: a missing subagentId with viaSubagent=true
rejects every slug rather than letting a dispatcher bug open a hole.
Existing callers unaffected — all three fields are optional and the legacy
put_page behavior is unchanged when viaSubagent is undefined/false.
12 regression + namespace tests pin:
- local CLI writes (viaSubagent unset) accept arbitrary slugs
- MCP writes (remote=true, viaSubagent unset) accept arbitrary slugs
- subagent-path: anchored prefix accepted, wrong id rejected, prefix-
collision defeated, leading-slash rejected, bare-prefix rejected,
fail-closed on missing/NaN subagentId, permission_denied code emitted
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
