feat: 階段 4 工具二（助理技能產生、驗證實跑、技能 README 與版本號、PR）

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

hooks/register.tsx

@@ -4,6 +4,7 @@ import { CHARACTERS, applyOverrides, findCharacter, personaSection } from './cha
 import type { Axes } from './characters'
 import { layout, meter, parseFields, remainColor, SEPARATOR, usedColor } from './statusline'
 import type { Segment } from './statusline'
+import { NEED_ACTIVE, TOOL_COMMAND, registerTools, runSkillTool } from './skilltool'
 
 const ACTIVE_KEY = 'active'
 const OFF_COMMAND = 'anima-off'
@@ -62,6 +63,7 @@ export const register: Register = (on, options) => {
 
   const isEnabled = flag('enabled', true)
   let active: string | undefined
+  let toolRegistered = false
   const holder: { sys?: Sys } = {}
 
   const overrides = (): Partial<Axes> => {
@@ -81,6 +83,10 @@ export const register: Register = (on, options) => {
       await $.command.register({ name: OFF_COMMAND, description: '離開角色，回到一般的 Claude Code' })
       const saved = await $.store.get(ACTIVE_KEY)
       active = flag('persist', true) && typeof saved === 'string' && findCharacter(saved) ? saved : undefined
+      if (active && !toolRegistered) {
+        toolRegistered = true
+        await registerTools($)
+      }
     }
     return next(e)
   })
@@ -92,10 +98,18 @@ export const register: Register = (on, options) => {
       await $.store.delete(ACTIVE_KEY)
       return { text: '已離開角色，回到一般模式。' }
     }
+    if (e.command === TOOL_COMMAND) {
+      return { text: findCharacter(active) ? await runSkillTool($, e.args) : NEED_ACTIVE }
+    }
     const c = findCharacter(e.command)
     if (!c) return next(e)
     active = c.slug
     await $.store.set(ACTIVE_KEY, c.slug)
+    // 工具二到四只在啟動角色後才註冊。
+    if (!toolRegistered) {
+      toolRegistered = true
+      await registerTools($)
+    }
     return { text: `已啟動：${c.name}（${c.work}）。用 /jsc-anima:${OFF_COMMAND} 離開。` }
   })