feat(skills): align with cross-org review

- safety: drop tools section (moved to sdlc); relax kubectl-apply ban to
  production-only (dev and uat permit direct kubectl for iteration);
  keep kubectl-create-secret ban at all environments
- sdlc: split Authentication into its own section (Better-Auth + Google +
  Apple + Authentik); add Tools (canonical, not alternatives) section
  moved from safety, including the playwright MCP and ghcr.io registry
  standard

skills/safety/SKILL.md

@@ -2,9 +2,9 @@
 name: safety
 description: >
   Non-negotiable safety rules for all CartSnitch agents. Covers secret
-  handling, destructive-action gating, the SealedSecrets workflow, the
+  handling, destructive-action gating, the SealedSecrets workflow, kubectl
-  canonical tool list (vs. the alternatives we don't use), the no-Dependabot
+  scope limits, and the escalation protocol when an action's safety is
-  policy, and the escalation protocol when an action's safety is uncertain.
+  uncertain.
 ---
 
 # Safety
@@ -19,7 +19,7 @@ The following rules apply to every CartSnitch agent without exception.
 
 * **Never commit plaintext secrets.** Kubernetes secrets go through Bitnami Sealed Secrets (`kubeseal`). Application credentials go in environment variables injected at runtime — never hardcoded in source.
 
-* **Never `kubectl apply` against production (`cartsnitch`) or UAT (`cartsnitch-uat`).** Both are Flux-managed. Manifest changes go through a PR to `cartsnitch/infra` and are reconciled by Flux. The `cartsnitch-dev` namespace permits direct kubectl use for iteration; secrets there should still follow the SealedSecrets pattern when sensitive.
+* **Never `kubectl apply` against production (`cartsnitch`).** The production namespace is Flux-managed. Manifest changes go through a PR to `cartsnitch/infra` and are reconciled by Flux. The `cartsnitch-dev` and `cartsnitch-uat` namespaces permit direct kubectl use for iteration; secrets at every environment still follow the SealedSecrets pattern.
 
 * **Never `kubectl create secret` in production.** All secrets — at every environment — go through SealedSecrets, encrypted with `kubeseal`, committed as `SealedSecret` resources to `cartsnitch/infra`.
 
@@ -27,20 +27,6 @@ The following rules apply to every CartSnitch agent without exception.
 
 * **Never run `tofu` directly.** Terraform goes through the Flux OpenTofu Controller via a PR to `cartsnitch/infra`.
 
-## Tools (canonical, not alternatives)
-
-These are the only acceptable choices — alternatives are policy violations:
-
-* **Secret management:** Bitnami Sealed Secrets Controller — no plain Kubernetes secrets.
-* **Database:** CloudNativePG Operator (Postgres) — no SQLite, MariaDB, or MySQL.
-* **Cache / pub-sub:** DragonflyDB Operator — no Redis.
-* **Authentication:** Better-Auth + OAuth2 via Authentik. Auth0, Okta, Entra-ID are also supported when required. **Never build custom authentication.**
-* **Dependency updates:** Mend Renovate. **Dependabot is not used and will not be used.** Do not configure it. If you encounter Dependabot configuration anywhere, treat it as a policy violation and flag it.
-* **Container registry:** `ghcr.io/cartsnitch/<service>` — no Docker Hub for first-party images.
-* **Browser automation:** the `playwright` MCP server (`http://playwright:8931/mcp`). Never run Playwright locally or install browser binaries. Target dev (`cartsnitch.dev.farh.net`) — never test production.
-
-If a task requires deviating from any of the above, treat it as a destructive action: stop, file an issue with rationale, request board approval.
-
 ## 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.

skills/sdlc/SKILL.md

@@ -147,11 +147,17 @@ Without this release, the receiving agent cannot check out the issue.
 * **Production:** namespace `cartsnitch`, FQDN `cartsnitch.farh.net`
 * **UAT:** namespace `cartsnitch-uat`, FQDN `cartsnitch.uat.farh.net`
 * **Dev:** namespace `cartsnitch-dev`, FQDN `cartsnitch.dev.farh.net`
-* **Auth:** Better-Auth + OAuth2 via Authentik OIDC at `https://auth.farh.net` (credentials in `authentik-credentials` secret in the relevant namespace). Authentik / Auth0 / Okta / Entra-ID are all supported. **Never build custom auth.**
 * **Cluster:** Kubernetes — cluster-wide read; read/write on `cartsnitch-dev` and `cartsnitch-uat`; read-only on `cartsnitch` (production).
 * **Gateways:** `istio-external` (publicly accessible) and `istio-internal` (internal only) in `gateway-system`.
 * **Container registry:** `ghcr.io/cartsnitch/<service>` only.
 
+## Authentication
+
+* **Framework:** Better-Auth.
+* **Social login:** Google and Apple OAuth.
+* **SSO:** Authentik OIDC at `https://auth.farh.net` (credentials in `authentik-credentials` secret).
+* **Never build custom authentication.**
+
 ## Deployment — 2-stage Flux GitOps
 
 **Stage 1 — CI (GitHub Actions, runs in each application repo):**
@@ -181,7 +187,21 @@ kubectl rollout restart deployment/<name> -n <namespace>
 
 Terraform (OpenTofu) is deployed via the **Flux OpenTofu Controller** in a GitOps fashion. Submit Terraform configurations via a PR to `cartsnitch/infra` — the tofu controller reconciles them on merge. Use for Authentik configuration, DNS, or other infra provisioning.
 
-**Never run `tofu` directly.** Never `kubectl apply` against production. Production changes go through Flux only.
+**Never run `tofu` directly.** Never `kubectl apply` against production. Production changes go through Flux only. The `cartsnitch-dev` and `cartsnitch-uat` namespaces permit direct kubectl use for iteration.
+
+## Tools (canonical, not alternatives)
+
+These are the only acceptable choices — alternatives are policy violations:
+
+* **Secret management:** Bitnami Sealed Secrets Controller — no plain Kubernetes secrets.
+* **Database:** CloudNativePG Operator (Postgres) — no SQLite, MariaDB, or MySQL.
+* **Cache / pub-sub:** DragonflyDB Operator — no Redis.
+* **Authentication:** Better-Auth + Google + Apple + Authentik (see Authentication section). Never build custom auth.
+* **Dependency updates:** Mend Renovate. **Dependabot is not used and will not be used.** Do not configure it.
+* **Container registry:** `ghcr.io/cartsnitch/<service>` — no Docker Hub for first-party images.
+* **Browser automation:** the `playwright` MCP server (`http://playwright:8931/mcp`). Never run Playwright locally or install browser binaries. Target dev (`cartsnitch.dev.farh.net`) — never test production.
+
+If a task requires deviating from any of the above, treat it as a destructive action: stop, file an issue with rationale, request board approval.
 
 ## External communication