feat: CCW Dashboard 增强 - 停止命令、浏览器修复和MCP多源配置

- 新增 ccw stop 命令支持优雅停止和强制终止 (--force)
- 修复 ccw view 服务器检测时浏览器无法打开的问题
- MCP 配置现在从多个源读取:
  - ~/.claude.json (项目级)
  - ~/.claude/settings.json 和 settings.local.json (全局)
  - 各工作空间的 .claude/settings.json (工作空间级)
- 新增全局 MCP 服务器显示区域
- 修复路径选择模态框样式问题

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

ccw/src/templates/dashboard.css

@@ -8112,3 +8112,76 @@ code.ctx-meta-chip-value {
   opacity: 0.5;
   cursor: not-allowed;
 }
+
+/* Path Input Group */
+.path-input-group {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  flex-wrap: wrap;
+}
+
+.path-input-group label {
+  font-size: 0.875rem;
+  color: hsl(var(--muted-foreground));
+  white-space: nowrap;
+}
+
+.path-input-group input {
+  flex: 1;
+  min-width: 200px;
+  padding: 0.625rem 0.875rem;
+  background: hsl(var(--background));
+  border: 1px solid hsl(var(--border));
+  border-radius: 0.375rem;
+  font-size: 0.875rem;
+  font-family: var(--font-mono);
+  color: hsl(var(--foreground));
+  outline: none;
+  transition: border-color 0.15s, box-shadow 0.15s;
+}
+
+.path-input-group input:focus {
+  border-color: hsl(var(--primary));
+  box-shadow: 0 0 0 3px hsl(var(--primary) / 0.1);
+}
+
+.path-input-group input::placeholder {
+  color: hsl(var(--muted-foreground));
+}
+
+.path-go-btn {
+  padding: 0.625rem 1.25rem;
+  background: hsl(var(--primary));
+  color: white;
+  border: none;
+  border-radius: 0.375rem;
+  font-size: 0.875rem;
+  font-weight: 500;
+  cursor: pointer;
+  transition: all 0.15s;
+  white-space: nowrap;
+}
+
+.path-go-btn:hover {
+  background: hsl(var(--primary) / 0.9);
+  transform: translateY(-1px);
+}
+
+.path-go-btn:active {
+  transform: translateY(0);
+}
+
+/* Selected Folder Display */
+.selected-folder {
+  padding: 0.75rem 1rem;
+  background: hsl(var(--muted));
+  border-radius: 0.5rem;
+  margin-bottom: 0.75rem;
+}
+
+.selected-folder strong {
+  font-size: 1rem;
+  color: hsl(var(--foreground));
+  font-family: var(--font-mono);
+}