docs(tools): simplify roadmap and add Chinese translation

- Replace phased roadmap with simple future tools list
- Add Chinese README (README.zh-CN.md)
- Add language switching links between EN/CN docs

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/agent/tools/README.md

@@ -1,5 +1,7 @@
 # Tools System
 
+[中文文档](./README.zh-CN.md)
+
 The tools system provides LLM agents with capabilities to interact with the external world. Tools are the "hands and feet" of an agent - without tools, an LLM can only generate text responses.
 
 ## Architecture Overview
@@ -316,31 +318,13 @@ When both Profile config and CLI options are provided:
 pnpm agent:cli --profile my-agent --tools-deny exec "list files"
 ```
 
-## Roadmap
+## Future Tools
 
-### Phase 1: Infrastructure (Done)
+The following tools are planned for future implementation:
 
--  [x] Tool policy system (`policy.ts`)
--  [x] Tool groups definition (`groups.ts`)
--  [x] CLI support (`--tools-profile`, `--tools-allow`, `--tools-deny`)
--  [x] Tools inspection CLI (`pnpm tools:cli`)
-
-### Phase 2: Config File Support (Done)
-
--  [x] Agent Profile tools integration - default tools config per profile
-
-### Phase 3: Core Tools
-
--  [ ] Browser tool - simplified web automation (screenshot, click, type)
--  [ ] Session management tools - `sessions_list`, `sessions_history`, `sessions_send`, `sessions_spawn`, `session_status`
-
-### Phase 4: Enhanced Tools (Partial)
-
--  [x] Memory tool - persistent key-value storage for agent memory
--  [ ] Image tool - image generation and manipulation
-
-### Phase 5: Advanced Features
-
--  [ ] Cron tool - scheduled task execution
--  [ ] Message tool - inter-agent communication
--  [ ] Canvas tool - visual output generation
+- **Browser** - Simplified web automation (screenshot, click, type)
+- **Session Management** - `sessions_list`, `sessions_history`, `sessions_send`, `sessions_spawn`, `session_status`
+- **Image** - Image generation and manipulation
+- **Cron** - Scheduled task execution
+- **Message** - Inter-agent communication
+- **Canvas** - Visual output generation