Rewrite 548 skill descriptions to the activation rubric

Each rewritten description now states both what the skill does (concrete
capability, named tools/artifacts) and an explicit when-to-use trigger,
improving agent discovery/activation. Grounded in each skill's own body;
changes confined to the `description` field only (bodies and all other
frontmatter untouched). Produced by a gated audit->rewrite->recheck loop
(548 -> 0 flagged) with a sampled anti-invention check (0 ungrounded).

Schema: 817/817 pass. Framework-ID gate: 0 defects.

skills/conducting-malware-incident-response/SKILL.md

@@ -1,11 +1,6 @@
 ---
 name: conducting-malware-incident-response
-description: 'Responds to malware infections across enterprise endpoints by identifying the malware family, determining infection
-  vectors, assessing spread, and executing eradication procedures. Covers the full lifecycle from detection through containment,
-  analysis, removal, and recovery. Activates for requests involving malware response, malware eradication, trojan removal,
-  worm containment, malware triage, or infected endpoint remediation.
-
-  '
+description: Respond to malware infections across enterprise endpoints by identifying the malware family, determining infection vectors, assessing spread, and executing containment, analysis, eradication, and recovery procedures aligned to MITRE ATT&CK. Use when responding to a confirmed or suspected malware infection, including trojan/worm/ransomware outbreaks, malware triage, or infected endpoint remediation.
 domain: cybersecurity
 subdomain: incident-response
 tags: