feat(omo-claude): aggregate 14 skills + author root hooks.json and plugin test

sync-skills aggregates 4 component skills + 10 shared; 6 harness-tool skills get
the Claude Code Harness Tool Compatibility block; start-work's embedded Codex
section is demoted. Root hooks.json uses ${CLAUDE_PLUGIN_ROOT}, widens PostToolUse
to Write|Edit|MultiEdit, and registers no create_goal PreToolUse (D4). Plugin
aggregate test pins hooks/skills/mcp shape.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/omo-claude/plugin/skills/ultragoal/agents/openai.yaml

@@ -0,0 +1,6 @@
+interface:
+  display_name: "ulw loop"
+  short_description: "Goal-like ultrawork loop for systematic decomposition"
+  search_terms:
+    - "ultragoal"
+  default_prompt: "Use $ulw-loop to break this work into a systematic ultrawork loop with evidence-backed checkpoints."