feat(omo-claude): scaffold package skeleton

Mirror packages/omo-codex layout for the Claude Code port: package.json
(@oh-my-opencode/omo-claude), tsconfig, index.d.ts, src/ + src/telemetry
stubs, and the plugin/ tree (.claude-plugin, components, agents, hooks,
scripts, skills, test, mcp) with a CC-worded plugin README + placeholder
package.json.

Plan: .omo/plans/omo-claude-plugin-port.md

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

packages/omo-claude/src/telemetry/index.ts

@@ -0,0 +1,4 @@
+// Placeholder — telemetry identity, posthog client, env-flags, and data-path
+// are authored in the telemetry-fork task. Re-exported from here so
+// `@oh-my-opencode/omo-claude/telemetry` resolves throughout the build.
+export {};