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/programming/scripts/go/templates/run.go

@@ -0,0 +1,15 @@
+// Package cmd wires the root command and subcommands.
+package cmd
+
+import (
+	"context"
+	"log/slog"
+	"os"
+)
+
+// Execute runs the root command. Wire cobra/subcommands here.
+func Execute(ctx context.Context) error {
+	slog.New(slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{Level: slog.LevelInfo}))
+	slog.InfoContext(ctx, "starting")
+	return nil
+}