Improve readability issues

This is only the first change of many changes.

* Remove redundant autogenerated comments
* Use the recommended file name style
* Use camelCase for variable names
* Don't introduce submodules for relevant types
* Don't introduce constants like modules, these are implementation details
* Remove empty files

packages/cli/src/core/GeminiStream.ts

@@ -1,22 +0,0 @@
-import { ToolCallEvent } from "../ui/types.js";
-
-export enum GeminiEventType {
-    Content,
-    ToolCallInfo,
-}
-
-export interface GeminiContentEvent {
-    type: GeminiEventType.Content;
-    value: string;
-}
-
-export interface GeminiToolCallInfoEvent {
-    type: GeminiEventType.ToolCallInfo;
-    value: ToolCallEvent;
-}
-
-export type GeminiEvent =
-    | GeminiContentEvent
-    | GeminiToolCallInfoEvent;
-
-export type GeminiStream = AsyncIterable<GeminiEvent>;

packages/cli/src/core/StreamingState.ts

@@ -1,4 +0,0 @@
-export enum StreamingState {
-    Idle,
-    Responding,
-}

packages/cli/src/core/constants.ts

@@ -1 +0,0 @@
-export const MEMORY_FILE_NAME = 'GEMINI.md';

packages/cli/src/core/gemini-client.ts

@@ -10,9 +10,9 @@ import { CoreSystemPrompt } from './prompts.js';
 import { type ToolCallEvent, type ToolCallConfirmationDetails, ToolCallStatus } from '../ui/types.js';
 import process from 'node:process';
 import { toolRegistry } from '../tools/tool-registry.js';
-import { ToolResult } from '../tools/ToolResult.js';
+import { ToolResult } from '../tools/tool.js';
 import { getFolderStructure } from '../utils/getFolderStructure.js';
-import { GeminiEventType, GeminiStream } from './GeminiStream.js';
+import { GeminiEventType, GeminiStream } from './gemini-stream.js';
 
 type ToolExecutionOutcome = {
     callId: string;
@@ -62,7 +62,7 @@ ${folderStructure}
 
         try {
             const chat = this.ai.chats.create({
-                model: 'gemini-2.5-pro-preview-03-25',//'gemini-2.0-flash',
+                model: 'gemini-2.0-flash',//'gemini-2.0-flash',
                 config: {
                     systemInstruction: CoreSystemPrompt,
                     ...this.defaultHyperParameters,

packages/cli/src/core/gemini-stream.ts

@@ -1,7 +1,33 @@
+import { ToolCallEvent } from "../ui/types.js";
 import { Part } from '@google/genai';
 import { HistoryItem } from '../ui/types.js';
-import { GeminiEventType, GeminiStream } from './GeminiStream.js';
-import { handleToolCallChunk, addErrorMessageToHistory } from './historyUpdater.js';
+import { handleToolCallChunk, addErrorMessageToHistory } from './history-updater.js';
+
+export enum GeminiEventType {
+    Content,
+    ToolCallInfo,
+}
+
+export interface GeminiContentEvent {
+    type: GeminiEventType.Content;
+    value: string;
+}
+
+export interface GeminiToolCallInfoEvent {
+    type: GeminiEventType.ToolCallInfo;
+    value: ToolCallEvent;
+}
+
+export type GeminiEvent =
+    | GeminiContentEvent
+    | GeminiToolCallInfoEvent;
+
+export type GeminiStream = AsyncIterable<GeminiEvent>;
+
+export enum StreamingState {
+    Idle,
+    Responding,
+}
 
 interface StreamProcessorParams {
     stream: GeminiStream;
@@ -104,7 +130,6 @@ export const processGeminiStream = async ({ // Renamed function for clarity
                     clearTimeout(renderTimeoutId);
                     renderTimeoutId = null;
                 }
-                
                 // Flush any text buffer content.
                 render(textBuffer);
                 currentGeminiMessageId = null; // End text message context

packages/cli/src/core/history-updater.ts

@@ -1,7 +1,7 @@
 import { Part } from "@google/genai";
 import { toolRegistry } from "../tools/tool-registry.js";
 import { HistoryItem, IndividualToolCallDisplay, ToolCallEvent, ToolCallStatus, ToolConfirmationOutcome, ToolEditConfirmationDetails, ToolExecuteConfirmationDetails } from "../ui/types.js";
-import { ToolResultDisplay } from "../tools/ToolResult.js";
+import { ToolResultDisplay } from "../tools/tool.js";
 
 /**
  * Processes a tool call chunk and updates the history state accordingly.
@@ -46,13 +46,9 @@ export const handleToolCallChunk = (
                 if (!tool) {
                     throw new Error(`Tool "${chunk.name}" not found or is not registered.`);
                 }
-                
                 handleToolCallChunk({ ...chunk, status: ToolCallStatus.Invoked, resultDisplay: "Executing...", confirmationDetails: undefined }, setHistory, submitQuery, getNextMessageId, currentToolGroupIdRef);
-                
                 const result = await tool.execute(chunk.args);
-
                 handleToolCallChunk({ ...chunk, status: ToolCallStatus.Invoked, resultDisplay: result.returnDisplay, confirmationDetails: undefined }, setHistory, submitQuery, getNextMessageId, currentToolGroupIdRef);
-
                 const functionResponse: Part = {
                     functionResponse: {
                         name: chunk.name,
@@ -60,7 +56,6 @@ export const handleToolCallChunk = (
                         response: { "output": result.llmContent },
                     },
                 }
-
                 await submitQuery(functionResponse);
             }
         }

packages/cli/src/core/prompts.ts

@@ -1,6 +1,7 @@
 import { ReadFileTool } from "../tools/read-file.tool.js";
 import { TerminalTool } from "../tools/terminal.tool.js";
-import { MEMORY_FILE_NAME } from "./constants.js";
+
+const MEMORY_FILE_NAME = 'GEMINI.md';
 
 const contactEmail = 'ntaylormullen@google.com';
 export const CoreSystemPrompt = `