feat(workspace): make workspace location configurable via env var

- Add MYCLAUDE_WORKSPACE_ROOT env var, default ~/workspace
- Auto-create workspace directory if it does not exist
- Move workspace/CLAUDE.md + .gitignore to workspace_template/
- Remove hardcoded symlink paths from workspace template
- Update get_workspace_root() with env-var priority logic
- Update metabot bots.json defaultWorkingDirectory to ~/workspace

CLAUDE.md

@@ -42,16 +42,22 @@
 
 ```
 myclaude/
-├── myclaude/          # Python 源码
-│   ├── cli.py         # CLI entrypoint
-│   ├── commands/      # 子命令
+├── myclaude/           # Python 源码
+│   ├── cli.py          # CLI entrypoint
+│   ├── commands/       # 子命令
 │   └── ...
-├── workspace/         # 主工作环境 (默认 --cwd 目标)
-│   └── CLAUDE.md      # 日常工作指令
-└── .claude/           # Claude Code 运行时配置
+├── workspace_template/ # workspace 模板 (CLAUDE.md, .gitignore)
+└── .claude/            # Claude Code 运行时配置
+
+workspace/              # 主工作环境 (默认 --cwd 目标, 独立目录)
+├── CLAUDE.md           # 日常工作指令
+├── myacademia -> ...   # 符号链接
+├── myslides -> ...
+└── tmp/                # 临时文件
 ```
 
-默认运行 `myclaude`（不带 --cwd）时，cwd 为 `workspace/`，指向工作区 CLAUDE.md。
+默认运行 `myclaude`（不带 --cwd）时，cwd 为 `MYCLAUDE_WORKSPACE_ROOT`
+（默认 `~/workspace`），指向独立工作区 CLAUDE.md。
 开发 CLI 时运行 `myclaude --cwd .` 以读取本文件。
 
 ---

myclaude/cli.py

@@ -10,7 +10,7 @@ import click
 from rich.console import Console
 
 from myclaude.commands import update_cmd, upgrade_cmd
-from myclaude.project_root import get_myclaude_project_root
+from myclaude.project_root import get_workspace_root
 
 stderr_console = Console(stderr=True)
 
@@ -23,18 +23,7 @@ def _package_version() -> str:
 
 
 def _resolve_chat_cwd() -> Path:
-    root = get_myclaude_project_root()
-    fallback = Path.home() / ".myclaude"
-    if root == fallback:
-        stderr_console.print(
-            "[red]Cannot resolve myclaude project root.[/red] Run from the repo or set "
-            "[cyan]MYCLAUDE_PROJECT_ROOT[/cyan].",
-        )
-        raise SystemExit(1)
-    workspace = root / "workspace"
-    if workspace.is_dir():
-        return workspace
-    return root
+    return get_workspace_root()
 
 
 @click.group(

myclaude/project_root.py

@@ -1,4 +1,4 @@
-"""Resolve myclaude repository root for make / editable install flows."""
+"""Resolve myclaude repository and workspace roots."""
 
 import os
 from pathlib import Path
@@ -54,3 +54,25 @@ def get_myclaude_project_root() -> Path:
         here = here.parent
 
     return Path.home() / ".myclaude"
+
+
+def get_workspace_root() -> Path:
+    """
+    Root of the myclaude workspace directory.
+
+    Order: MYCLAUDE_WORKSPACE_ROOT > project_root/workspace/ > ~/workspace
+    Creates the directory if it does not exist.
+    """
+    env_root = os.environ.get("MYCLAUDE_WORKSPACE_ROOT")
+    if env_root:
+        root = Path(env_root).expanduser().resolve()
+    else:
+        project_root = get_myclaude_project_root()
+        project_workspace = project_root / "workspace"
+        if project_workspace.is_dir():
+            root = project_workspace
+        else:
+            root = Path.home() / "workspace"
+
+    root.mkdir(parents=True, exist_ok=True)
+    return root

workspace_template/CLAUDE.md

@@ -46,23 +46,24 @@
 ```
 workspace/
 ├── .obsidian/     # Obsidian 配置
-├── myacademia -> ...    # → Obsidian/iCloud 知识库
-├── myagent -> ...       # → myagent 项目
-├── mydesktop -> ...     # → Obsidian/iCloud 过程/共享文件
-├── myslides -> ...      # → Slidev 幻灯片
-├── mytoolkit -> ...     # → 个人 CLI 工具集
-├── mywebpage -> ...     # → Docusaurus 网站
+├── myacademia -> ...    # → Obsidian/iCloud 知识库 (符号链接)
+├── myagent -> ...       # → myagent 项目 (符号链接)
+├── mydesktop -> ...     # → Obsidian/iCloud 过程/共享文件 (符号链接)
+├── myslides -> ...      # → Slidev 幻灯片 (符号链接)
+├── mytoolkit -> ...     # → 个人 CLI 工具集 (符号链接)
+├── mywebpage -> ...     # → Docusaurus 网站 (符号链接)
 ├── scripts/       # 实用脚本
 └── tmp/           # 临时文件
 ```
 
-**符号链接目标**:
-- `myacademia` → `~/Library/Mobile Documents/iCloud~md~obsidian/Documents/myacademia`
-- `mydesktop` → `~/Library/Mobile Documents/iCloud~md~obsidian/Documents/mydesktop`
-- `myagent` → `~/Documents/myResearch/myProjects/apaam/repo/myagent`
-- `myslides` → `~/Documents/myWork/sysu/4_成果归档/myslides`
-- `mytoolkit` → `~/Documents/MyBin/mytoolkit`
-- `mywebpage` → `~/Documents/myWork/sysu/4_成果归档/mywebpage`
+**符号链接配置**：
+根据实际环境创建符号链接，目标路径因人而异。例如：
+- `myacademia` → Obsidian/iCloud 知识库路径
+- `mydesktop` → Obsidian/iCloud 过程文件路径
+- `myagent` → myagent 项目路径
+- `myslides` → Slidev 幻灯片路径
+- `mytoolkit` → 个人 CLI 工具集路径
+- `mywebpage` → Docusaurus 网站路径
 
 **重要路径**:
 - `myacademia/` - Obsidian 知识库