fix: companion 改用 $.fs，修正 hooks 模組載入失敗

node-fs.ts 引用 node:fs/promises，hooks 沙箱不允許，導致 /companion 指令未註冊。
改為以引擎的 $.fs 包成 Fs adapter；rename 改為選用，無 rename 時直接覆寫。
版本號調整為 0.0.1。

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

plugins/companion/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "companion",
-  "version": "0.1.0",
+  "version": "0.0.1",
   "description": "小說角色陪伴：人設注入、語氣、心情與好感、互動記憶、主動關心與待辦，並可用 ingest skill 解析小說建立角色",
   "license": "MIT",
   "author": {

plugins/companion/hooks/companion/engine-fs.ts

@@ -0,0 +1,26 @@
+import type { Fs } from './fs'
+
+// hooks 沙箱沒有 node:fs，改用引擎的 $.fs；它沒有 rename，所以不提供（writeAtomic 會直接覆寫）
+type EngineFs = {
+  read(path: string): Promise<string>
+  write(path: string, text: string): Promise<void>
+  list(path?: string): Promise<{ name: string }[]>
+}
+
+export const engineFs = (fs: EngineFs): Fs => ({
+  async read(path) {
+    try {
+      return await fs.read(path)
+    } catch {
+      return null
+    }
+  },
+  write: (path, data) => fs.write(path, data),
+  async list(dir) {
+    try {
+      return (await fs.list(dir)).map(e => e.name).filter(n => !n.endsWith('.tmp')).sort()
+    } catch {
+      return []
+    }
+  },
+})

plugins/companion/hooks/companion/fs.ts

@@ -2,7 +2,8 @@
 export interface Fs {
   read(path: string): Promise<string | null>
   write(path: string, data: string): Promise<void>
-  rename(from: string, to: string): Promise<void>
+  /** 沒有 rename 的環境（hooks 沙箱）會直接覆寫 */
+  rename?(from: string, to: string): Promise<void>
   list(dir: string): Promise<string[]>
 }
 
@@ -10,6 +11,7 @@ export type Clock = { now(): number }
 
 // 先寫暫存檔再 rename，當機時不會留下寫到一半的檔案
 export async function writeAtomic(fs: Fs, path: string, data: string): Promise<void> {
+  if (!fs.rename) return fs.write(path, data)
   const tmp = `${path}.tmp`
   await fs.write(tmp, data)
   await fs.rename(tmp, path)

plugins/companion/hooks/companion/node-fs.ts

@@ -1,26 +0,0 @@
-import { mkdir, readdir, readFile, rename, writeFile } from 'node:fs/promises'
-import { dirname } from 'node:path'
-
-import type { Fs } from './fs'
-
-export const nodeFs: Fs = {
-  async read(path) {
-    try {
-      return await readFile(path, 'utf8')
-    } catch {
-      return null
-    }
-  },
-  async write(path, data) {
-    await mkdir(dirname(path), { recursive: true })
-    await writeFile(path, data, 'utf8')
-  },
-  rename,
-  async list(dir) {
-    try {
-      return (await readdir(dir)).filter(n => !n.endsWith('.tmp')).sort()
-    } catch {
-      return []
-    }
-  },
-}

plugins/companion/hooks/register.tsx

@@ -2,7 +2,7 @@ import type { Register } from 'claude-code'
 
 import { fitCompanion } from './companion/band'
 import { createCompanion } from './companion/core'
-import { nodeFs } from './companion/node-fs'
+import { engineFs } from './companion/engine-fs'
 
 let companion: ReturnType<typeof createCompanion> | undefined
 
@@ -14,7 +14,7 @@ export const register: Register = on => {
       argumentHint: 'status | switch <角色> | off | setup',
     })
     const home = await $.env.get('HOME')
-    companion = createCompanion({ fs: nodeFs, clock: { now: Date.now }, root: `${home ?? ''}/.companion` })
+    companion = createCompanion({ fs: engineFs({ read: p => $.fs.read(p), write: (p, t) => $.fs.write(p, t), list: p => $.fs.list(p) }), clock: { now: Date.now }, root: `${home ?? ''}/.companion` })
     const first = await companion.ensureActivated()
     if (first.first) $.ui.toast(`已啟用 ${first.name}。用 /companion off 可關閉`)