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/commands/list.ts

@@ -0,0 +1,37 @@
+import path from "path"
+import { promises as fs } from "fs"
+import { defineCommand } from "citty"
+import { pathExists } from "../utils/files"
+
+export default defineCommand({
+  meta: {
+    name: "list",
+    description: "List available Claude plugins under plugins/",
+  },
+  async run() {
+    const root = process.cwd()
+    const pluginsDir = path.join(root, "plugins")
+    if (!(await pathExists(pluginsDir))) {
+      console.log("No plugins directory found.")
+      return
+    }
+
+    const entries = await fs.readdir(pluginsDir, { withFileTypes: true })
+    const plugins: string[] = []
+
+    for (const entry of entries) {
+      if (!entry.isDirectory()) continue
+      const manifestPath = path.join(pluginsDir, entry.name, ".claude-plugin", "plugin.json")
+      if (await pathExists(manifestPath)) {
+        plugins.push(entry.name)
+      }
+    }
+
+    if (plugins.length === 0) {
+      console.log("No Claude plugins found under plugins/.")
+      return
+    }
+
+    console.log(plugins.sort().join("\n"))
+  },
+})