feat: add playwright-ephemeral skill for ephemeral browser provisioning

Adds a new skill that provisions ephemeral Playwright MCP browser
sessions as Kubernetes Jobs for E2E testing. Includes provision and
teardown scripts, K8s Job/Service YAML templates, and agent-facing
SKILL.md documentation.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

playwright-ephemeral/references/svc-template.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: "{{SESSION_NAME}}"
+  namespace: "{{NAMESPACE}}"
+  labels:
+    app: playwright-mcp
+    session: "{{SESSION_NAME}}"
+spec:
+  type: ClusterIP
+  selector:
+    session: "{{SESSION_NAME}}"
+  ports:
+    - port: 8931
+      targetPort: 8931
+      protocol: TCP