Scaffolding and Foundation Changes

- feat(cli): add compactToolOutput ui setting
- feat(cli): add DenseToolMessage component and supporting rendering logic
- feat(cli): implement compact tool output rendering logic in ToolGroupMessage
- feat(core): add tool display name constants and update tool constructors
- feat(cli): update compact output allowlist to use DISPLAY_NAME constants
- test(cli): add compact tool output rendering and spacing tests

-----
Note: Unsafe assignments/assertions/'any' usage still exist in ToolGroupMessage.tsx and DenseToolMessage.tsx and need to be addressed before PR.
Note: Tests contain 'any' casts for mocks that need to be addressed before PR.

packages/core/src/confirmation-bus/types.ts

@@ -8,6 +8,7 @@ import { type FunctionCall } from '@google/genai';
 import type {
   ToolConfirmationOutcome,
   ToolConfirmationPayload,
+  DiffStat,
 } from '../tools/tools.js';
 import type { ToolCall } from '../scheduler/types.js';
 
@@ -88,6 +89,7 @@ export type SerializableConfirmationDetails =
       originalContent: string | null;
       newContent: string;
       isModifying?: boolean;
+      diffStat?: DiffStat;
     }
   | {
       type: 'exec';

packages/core/src/tools/grep.ts

@@ -28,7 +28,7 @@ import { isGitRepository } from '../utils/gitUtils.js';
 import type { Config } from '../config/config.js';
 import type { FileExclusions } from '../utils/ignorePatterns.js';
 import { ToolErrorType } from './tool-error.js';
-import { GREP_TOOL_NAME } from './tool-names.js';
+import { GREP_TOOL_NAME, GREP_DISPLAY_NAME } from './tool-names.js';
 import { debugLogger } from '../utils/debugLogger.js';
 import { GREP_DEFINITION } from './definitions/coreTools.js';
 import { resolveToolDeclaration } from './definitions/resolver.js';
@@ -599,7 +599,7 @@ export class GrepTool extends BaseDeclarativeTool<GrepToolParams, ToolResult> {
   ) {
     super(
       GrepTool.Name,
-      'SearchText',
+      GREP_DISPLAY_NAME,
       GREP_DEFINITION.base.description!,
       Kind.Search,
       GREP_DEFINITION.base.parametersJsonSchema,

packages/core/src/tools/ls.ts

@@ -18,7 +18,7 @@ import { makeRelative, shortenPath } from '../utils/paths.js';
 import type { Config } from '../config/config.js';
 import { DEFAULT_FILE_FILTERING_OPTIONS } from '../config/constants.js';
 import { ToolErrorType } from './tool-error.js';
-import { LS_TOOL_NAME } from './tool-names.js';
+import { LS_TOOL_NAME, LS_DISPLAY_NAME } from './tool-names.js';
 import { debugLogger } from '../utils/debugLogger.js';
 import { LS_DEFINITION } from './definitions/coreTools.js';
 import { resolveToolDeclaration } from './definitions/resolver.js';
@@ -291,7 +291,7 @@ export class LSTool extends BaseDeclarativeTool<LSToolParams, ToolResult> {
   ) {
     super(
       LSTool.Name,
-      'ReadFolder',
+      LS_DISPLAY_NAME,
       LS_DEFINITION.base.description!,
       Kind.Search,
       LS_DEFINITION.base.parametersJsonSchema,

packages/core/src/tools/read-many-files.ts

@@ -33,7 +33,10 @@ import { getProgrammingLanguage } from '../telemetry/telemetry-utils.js';
 import { logFileOperation } from '../telemetry/loggers.js';
 import { FileOperationEvent } from '../telemetry/types.js';
 import { ToolErrorType } from './tool-error.js';
-import { READ_MANY_FILES_TOOL_NAME } from './tool-names.js';
+import {
+  READ_MANY_FILES_TOOL_NAME,
+  READ_MANY_FILES_DISPLAY_NAME,
+} from './tool-names.js';
 import { READ_MANY_FILES_DEFINITION } from './definitions/coreTools.js';
 import { resolveToolDeclaration } from './definitions/resolver.js';
 
@@ -472,7 +475,7 @@ export class ReadManyFilesTool extends BaseDeclarativeTool<
   ) {
     super(
       ReadManyFilesTool.Name,
-      'ReadManyFiles',
+      READ_MANY_FILES_DISPLAY_NAME,
       READ_MANY_FILES_DEFINITION.base.description!,
       Kind.Read,
       READ_MANY_FILES_DEFINITION.base.parametersJsonSchema,

packages/core/src/tools/tool-names.ts

@@ -160,6 +160,11 @@ export const EDIT_DISPLAY_NAME = 'Edit';
 export const ASK_USER_DISPLAY_NAME = 'Ask User';
 export const READ_FILE_DISPLAY_NAME = 'ReadFile';
 export const GLOB_DISPLAY_NAME = 'FindFiles';
+export const LS_DISPLAY_NAME = 'ReadFolder';
+export const GREP_DISPLAY_NAME = 'SearchText';
+export const WEB_SEARCH_DISPLAY_NAME = 'GoogleSearch';
+export const WEB_FETCH_DISPLAY_NAME = 'WebFetch';
+export const READ_MANY_FILES_DISPLAY_NAME = 'ReadManyFiles';
 export const TRACKER_CREATE_TASK_TOOL_NAME = 'tracker_create_task';
 export const TRACKER_UPDATE_TASK_TOOL_NAME = 'tracker_update_task';
 export const TRACKER_GET_TASK_TOOL_NAME = 'tracker_get_task';

packages/core/src/tools/web-fetch.ts

@@ -27,7 +27,7 @@ import {
   WebFetchFallbackAttemptEvent,
 } from '../telemetry/index.js';
 import { LlmRole } from '../telemetry/llmRole.js';
-import { WEB_FETCH_TOOL_NAME } from './tool-names.js';
+import { WEB_FETCH_TOOL_NAME, WEB_FETCH_DISPLAY_NAME } from './tool-names.js';
 import { debugLogger } from '../utils/debugLogger.js';
 import { retryWithBackoff } from '../utils/retry.js';
 import { WEB_FETCH_DEFINITION } from './definitions/coreTools.js';
@@ -684,7 +684,7 @@ export class WebFetchTool extends BaseDeclarativeTool<
   ) {
     super(
       WebFetchTool.Name,
-      'WebFetch',
+      WEB_FETCH_DISPLAY_NAME,
       WEB_FETCH_DEFINITION.base.description!,
       Kind.Fetch,
       WEB_FETCH_DEFINITION.base.parametersJsonSchema,

packages/core/src/tools/web-search.ts

@@ -5,7 +5,7 @@
  */
 
 import type { MessageBus } from '../confirmation-bus/message-bus.js';
-import { WEB_SEARCH_TOOL_NAME } from './tool-names.js';
+import { WEB_SEARCH_TOOL_NAME, WEB_SEARCH_DISPLAY_NAME } from './tool-names.js';
 import type { GroundingMetadata } from '@google/genai';
 import {
   BaseDeclarativeTool,
@@ -206,7 +206,7 @@ export class WebSearchTool extends BaseDeclarativeTool<
   ) {
     super(
       WebSearchTool.Name,
-      'GoogleSearch',
+      WEB_SEARCH_DISPLAY_NAME,
       WEB_SEARCH_DEFINITION.base.description!,
       Kind.Search,
       WEB_SEARCH_DEFINITION.base.parametersJsonSchema,