feat(ui): 美化启动界面并重构 /is 工具/插件展示

- 缩小标题加 ❯ 引导符、彩色版本号、中文说明
- 去除启动头部段落间空行
- /is 本地扩展和 npm 扩展合并为 [插件] 分组展示
- /is 新增 [工具] 区块显示所有注册工具及激活状态

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/coding-agent/src/modes/interactive/interactive-mode.ts

@@ -1422,19 +1422,30 @@ export class InteractiveMode {
 				};
 				const { local, packages } = this.splitExtensionsByOrigin(extensions);
 
+				const allExtensionLabels = [
+					...this.getCompactExtensionLabels(local),
+					...this.getCompactExtensionLabels(packages),
+				];
+				const pluginCompactList = formatCompactGrid(allExtensionLabels);
+
+				const expandedParts: string[] = [];
 				if (local.length > 0) {
 					const localGroups = this.buildScopeGroups(local);
 					const localList = this.formatScopeGroups(localGroups, extensionFormatOptions);
-					const localCompactList = formatCompactGrid(this.getCompactExtensionLabels(local));
-					addLoadedSection("本地扩展", localCompactList, localList, "mdHeading", local.length);
+					expandedParts.push(
+						`${theme.fg("mdHeading", "  本地扩展")} ${theme.fg("muted", String(local.length))}\n${localList}`,
+					);
 				}
-
 				if (packages.length > 0) {
 					const packageGroups = this.buildScopeGroups(packages);
 					const packageList = this.formatScopeGroups(packageGroups, extensionFormatOptions);
-					const packageCompactList = formatCompactGrid(this.getCompactExtensionLabels(packages));
-					addLoadedSection("npm 扩展", packageCompactList, packageList, "mdHeading", packages.length);
+					expandedParts.push(
+						`${theme.fg("mdHeading", "  npm 扩展")} ${theme.fg("muted", String(packages.length))}\n${packageList}`,
+					);
 				}
+				const pluginExpandedList = expandedParts.join("\n");
+
+				addLoadedSection("插件", pluginCompactList, pluginExpandedList, "mdHeading", extensions.length);
 			}
 
 			// Show loaded themes (excluding built-in)
@@ -1459,6 +1470,20 @@ export class InteractiveMode {
 				);
 				addLoadedSection("Themes", themeCompactList, themeList, "mdHeading", customThemes.length);
 			}
+
+			const allTools = this.session.getAllTools();
+			if (allTools.length > 0) {
+				const activeToolNames = new Set(this.session.getActiveToolNames());
+				const toolCompactList = formatCompactGrid(allTools.map((t) => t.name));
+				const toolList = allTools
+					.map((t) => {
+						const active = activeToolNames.has(t.name);
+						const marker = active ? "  " : theme.fg("dim", "✗ ");
+						return `${marker}${theme.fg("dim", t.name)}${t.description ? theme.fg("dim", `  ${t.description.split("\n")[0].slice(0, 60)}`) : ""}`;
+					})
+					.join("\n");
+				addLoadedSection("工具", toolCompactList, toolList, "mdHeading", allTools.length);
+			}
 		}
 
 		if (showDiagnostics) {