docs(skills): update and standardize skill versions to 2.0.0 in frontmatter

- Bump version to 2.0.0 across all 8 multi-agent-mux skills reflecting A-4 Phase 2 adapter architecture and Option B isolation deprecation.
- Standardize author (godopu), license (MIT), platforms, environments, and metadata blocks across all SKILL.md files.

.agents/skills/multi-agent-mux-delegate-job/SKILL.md

@@ -1,10 +1,16 @@
 ---
 name: multi-agent-mux-delegate-job
 description: "Delegate a unit of work to any autonomous agent (claude-code, hermes, agy, cline, codex, or a human) and observe it asynchronously over an MQTT event channel. Supported roles include orchestrator, worker, and reviewer."
-version: 1.1.0
-author: Multi-Agent System
+version: 2.0.0
+author: godopu
 license: MIT
 platforms: [linux, macos, windows]
+environments: [terminal, herdr]
+metadata:
+  hermes:
+    tags: [agent, herdr, multi-agent, delegate, mqtt, async, job]
+    related_skills: [multi-agent-mux-create, multi-agent-mux-resume, multi-agent-mux-loop]
+    prereq_skills: [multi-agent-mux-create]
 ---
 
 # multi-agent-mux-delegate-job — Async Job Delegation over MQTT