[P42.5] Repo hygiene after Phase 41 merges

[DeliciousBuding]

Task

Ops-only hygiene after Phase 41. Prefer observe/close if clean. No MASTER. Hold super-governance-baseline.

[DeliciousBuding]

Ops-only hygiene clean after Phase 41; closed without code PR. Hold super-governance-baseline; no MASTER edit.

Observation base: origin/master 3b4800a4 (P41 tip; range a2298a3a^..3b4800a4, 7 merges / 30 files).

Gates:

• untracked: 0
• git diff --check a2298a3a^..HEAD: clean
• blob CR / trailing-ws / missing-final-newline on P41 range: none
• tracked noise (package-lock/coverage/tmp/secrets): none (only expected .env*.example)
• hold task/super-governance-baseline @ 9c0e84f4 (worktree present; not modified by this run)
• no MASTER edit in this issue

Nit (non-blocking, not fixed): hub-server/internal/service/agentteam/agent_team_guard.go ends with one extra blank line (gofmt would drop it). Pre-existing style across ~8 Go files including sibling agentteam files; prior hygiene SOP treated primary gates only.

Open residual (out of scope for #857): P42 security/docs issues #852–#856; PR #858 (MASTER P42) open/mergeable with green checks; Dependabot #423.