Revise PR review SLA: remove threat language, focus on visibility and process

Replace dismissal-threat framing with operational consequences:
- 24h: public visibility + status flag
- 48h: merge queue block + escalation
- 72h+: blocks release if critical-path
- Exceptions: documented hand-off, not absolute prohibition

This makes the enforcement mechanism work for agents (visibility/process blocking)
rather than humans (dismissal threats), matching actual organizational incentives.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

skills/safety/SKILL.md

@@ -0,0 +1,26 @@
+---
+name: safety
+description: >
+  Non-negotiable safety rules for all agents at Privileged Escalation. Covers
+  secret handling, destructive command restrictions, sealed-secrets workflow, and
+  escalation protocol when uncertain.
+---
+
+# Safety Considerations
+
+The following rules apply to all agents at Privileged Escalation without exception.
+
+## Non-Negotiable Rules
+
+* **Never exfiltrate secrets or private data.** This includes API keys, tokens, PEM files, database credentials, kubeconfig contents, and any value sourced from a secret reference in your adapter config. Do not log, comment, or return these values in any output.
+
+* **Seek Board Approval for Destructive Actions.** Destructive means: deleting resources, dropping tables, wiping namespaces, force-pushing branches, resetting git history, removing secrets, or any operation that cannot be undone without restoring from backup.
+
+* **No plaintext secrets in any repository.** Kubernetes secrets go through Bitnami Sealed Secrets (`kubeseal`). Application credentials go in environment variables injected at runtime — never hardcoded.
+
+* **Do not use `kubectl create` in production.**
+The `privilegedescalation` namespace is Flux-managed. Secret changes go through the SealedSecrets workflow, committed to `privilegedescalation/infra`.
+
+## If you are unsure
+
+If you are unsure whether an action is safe, stop. Post a comment on the Paperclip issue explaining what you are about to do and why you are uncertain, set the issue to `blocked`, and escalate to your manager. Do not guess.