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/targets/index.ts

@@ -0,0 +1,29 @@
+import type { ClaudePlugin } from "../types/claude"
+import type { OpenCodeBundle } from "../types/opencode"
+import type { CodexBundle } from "../types/codex"
+import { convertClaudeToOpenCode, type ClaudeToOpenCodeOptions } from "../converters/claude-to-opencode"
+import { convertClaudeToCodex } from "../converters/claude-to-codex"
+import { writeOpenCodeBundle } from "./opencode"
+import { writeCodexBundle } from "./codex"
+
+export type TargetHandler<TBundle = unknown> = {
+  name: string
+  implemented: boolean
+  convert: (plugin: ClaudePlugin, options: ClaudeToOpenCodeOptions) => TBundle | null
+  write: (outputRoot: string, bundle: TBundle) => Promise<void>
+}
+
+export const targets: Record<string, TargetHandler> = {
+  opencode: {
+    name: "opencode",
+    implemented: true,
+    convert: convertClaudeToOpenCode,
+    write: writeOpenCodeBundle,
+  },
+  codex: {
+    name: "codex",
+    implemented: true,
+    convert: convertClaudeToCodex as TargetHandler<CodexBundle>["convert"],
+    write: writeCodexBundle as TargetHandler<CodexBundle>["write"],
+  },
+}