docs(skills): rewrite container-security descriptions to a uniform standard

All 33 container-security skills now carry what it does, an explicit
"Use when" trigger, keywords, and a negative trigger naming the nearest
neighbour. Six collision clusters resolved by differentiating scope
rather than merging, so no skill is removed:

- kube-bench: running the tool vs interpreting findings into an audit
- Calico: portable upstream NetworkPolicy vs Calico-as-CNI vs Calico-only
  CRDs (GlobalNetworkPolicy, HostEndpoint, DNS egress)
- Falco: deploying and operating it vs authoring escape rules
- container escape: tool-agnostic runtime signals vs Falco rule syntax vs
  static posture audit vs offensive breakout
- Trivy: all-target platform and operator vs single-image scan
- Docker: images and Dockerfiles vs daemon.json vs the CIS audit script

Also replaces the templated "When to Use" boilerplate in these files,
including bullets that only restated the skill's own name.

Worst pair (Pod Security Standards vs Pod Security Admission) drops from
0.77 cosine to below the 0.45 threshold. Repo-wide: colliding pairs
60 -> 56, skills involved 105 -> 94.

skills/performing-container-escape-detection/SKILL.md

@@ -1,9 +1,13 @@
 ---
 name: performing-container-escape-detection
-description: 'Detects container escape attempts by analyzing namespace configurations,
-  privileged container checks, dangerous capability assignments, and host path mounts
-  using the kubernetes Python client. Identifies CVE-2022-0492 style escapes via cgroup
-  abuse. Use when auditing container security posture or investigating escape attempts.
+description: >-
+  Audits container and pod configuration for escape-enabling misconfiguration using the
+  Kubernetes Python client - privileged flags, dangerous capability grants, host path mounts,
+  shared namespaces, and CVE-2022-0492 style cgroup abuse. Use when sweeping a cluster for
+  workloads that could break out, producing a posture report, or checking configuration before
+  enforcement is switched on. Keywords: privileged, hostPath, hostPID, capabilities,
+  CVE-2022-0492, cgroup, kubernetes python client, posture audit. Do not use for runtime
+  syscall-based detection - use detecting-container-escape-attempts.
 
   '
 domain: cybersecurity