Initial commit of Gemini Code CLI

This commit introduces the initial codebase for the Gemini Code CLI, a command-line interface designed to facilitate interaction with the Gemini API for software engineering tasks.

The code was migrated from a previous git repository as a single squashed commit.

Core Features & Components:

*   **Gemini Integration:** Leverages the `@google/genai` SDK to interact with the Gemini models, supporting chat history, streaming responses, and function calling (tools).
*   **Terminal UI:** Built with Ink (React for CLIs) providing an interactive chat interface within the terminal, including input prompts, message display, loading indicators, and tool interaction elements.
*   **Tooling Framework:** Implements a robust tool system allowing Gemini to interact with the local environment. Includes tools for:
    *   File system listing (`ls`)
    *   File reading (`read-file`)
    *   Content searching (`grep`)
    *   File globbing (`glob`)
    *   File editing (`edit`)
    *   File writing (`write-file`)
    *   Executing bash commands (`terminal`)
*   **State Management:** Handles the streaming state of Gemini responses and manages the conversation history.
*   **Configuration:** Parses command-line arguments (`yargs`) and loads environment variables (`dotenv`) for setup.
*   **Project Structure:** Organized into `core`, `ui`, `tools`, `config`, and `utils` directories using TypeScript. Includes basic build (`tsc`) and start scripts.

This initial version establishes the foundation for a powerful CLI tool enabling developers to use Gemini for coding assistance directly in their terminal environment.

---
Created by yours truly: __Gemini Code__

packages/cli/src/ui/components/HistoryDisplay.tsx

@@ -0,0 +1,39 @@
+import React from 'react';
+import { Box } from 'ink';
+import type { HistoryItem } from '../types.js';
+import { UI_WIDTH } from '../constants.js';
+import UserMessage from './messages/UserMessage.js';
+import GeminiMessage from './messages/GeminiMessage.js';
+import InfoMessage from './messages/InfoMessage.js';
+import ErrorMessage from './messages/ErrorMessage.js';
+import ToolGroupMessage from './messages/ToolGroupMessage.js';
+import { PartListUnion } from '@google/genai';
+
+interface HistoryDisplayProps {
+    history: HistoryItem[];
+    onSubmit: (value: PartListUnion) => void;
+}
+
+const HistoryDisplay: React.FC<HistoryDisplayProps> = ({ history, onSubmit }) => {
+    // No grouping logic needed here anymore
+    return (
+        <Box flexDirection="column">
+            {history.map((item) => (
+                <Box key={item.id} marginBottom={1}>
+                    {/* Render standard message types */}
+                    {item.type === 'user' && <UserMessage text={item.text} />}
+                    {item.type === 'gemini' && <GeminiMessage text={item.text} />}
+                    {item.type === 'info' && <InfoMessage text={item.text} />}
+                    {item.type === 'error' && <ErrorMessage text={item.text} />}
+
+                    {/* Render the tool group component */}
+                    {item.type === 'tool_group' && (
+                        <ToolGroupMessage toolCalls={item.tools} onSubmit={onSubmit} />
+                    )}
+                </Box>
+            ))}
+        </Box>
+    );
+};
+
+export default HistoryDisplay;