feat: add OpenCode/Codex outputs and update changelog (#104)

* Add OpenCode converter coverage and specs

* Add Codex target support and spec docs

* Generate Codex command skills and refresh spec docs

* Add global Codex install path

* fix: harden plugin path loading and codex descriptions

* feat: ensure codex agents block on convert/install

* docs: clarify target branch usage for review

* chore: prep npm package metadata and release notes

* docs: mention opencode and codex in changelog

* docs: update CLI usage and remove stale todos

* feat: install from GitHub with global outputs

src/types/codex.ts

@@ -0,0 +1,23 @@
+import type { ClaudeMcpServer } from "./claude"
+
+export type CodexPrompt = {
+  name: string
+  content: string
+}
+
+export type CodexSkillDir = {
+  name: string
+  sourceDir: string
+}
+
+export type CodexGeneratedSkill = {
+  name: string
+  content: string
+}
+
+export type CodexBundle = {
+  prompts: CodexPrompt[]
+  skillDirs: CodexSkillDir[]
+  generatedSkills: CodexGeneratedSkill[]
+  mcpServers?: Record<string, ClaudeMcpServer>
+}