Add "Copy entire chat log" button to bottom more menu

[Copilot]

This PR adds a "Copy entire chat log" feature to the bottom more menu (...) as requested in the issue. Users can now easily copy their complete conversation history to paste into emails, documents, or other applications.

Changes Made

• Added copyEntireChatLog() function that formats all chat entries as readable text
• Added "Copy entire chat log" menu item to the bottom more menu with copy icon
• Positioned the new option second in the menu list, after "About" and before "Settings"
• Improved code quality by using optional chaining for safer property access
• Merged with main branch to incorporate latest features including message pinning, system instructions, and welcome messages

Implementation Details

The copy function formats chat entries in a clean, readable format:

• Human prompts: Prompt: [user input]
• AI responses: OpenAI: [ai response]
• Loading states: OpenAI: [Loading...]
• Entries separated by double line breaks for readability

The implementation reuses existing clipboard functionality and follows established UI patterns for consistency. The code uses modern JavaScript optional chaining (entry.responses?.length > 0) for robust property checking. The feature is fully compatible with new main branch functionality including message pinning and customizable system instructions.

Menu Order

The bottom more menu now displays options in this order:

1. About
2. Copy entire chat log (NEW)
3. Settings

Example Output

Prompt: What is artificial intelligence?

OpenAI: Artificial intelligence (AI) refers to the simulation of human intelligence in machines...

Prompt: Can you give me an example?

OpenAI: Sure! A common example is voice assistants like Siri or Alexa...

This provides users with a convenient way to export their entire conversation for sharing or documentation purposes.

Fixes #143.

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[chrisglein]

@copilot Address PR feedback

[chrisglein]

Suggested change

	const responses = entry.responses || [];
	if (responses.length > 0) {
	return `OpenAI: ${responses[0]}`;
	}
	return 'OpenAI: [Loading...]';
	if (entry.responses?.length > 0) {
	return `OpenAI: ${entry.responses[0]}`;
	}

[Copilot]

Updated to use optional chaining as suggested. The code now uses entry.responses?.length > 0 for a more concise and safe check. Commit d9ec908.

[Copilot]

@copilot Address PR feedback

Addressed all PR feedback:

1. Updated AI response check to use optional chaining (entry.responses?.length > 0)
2. Reordered menu items to place "Copy entire chat log" second, after "About"

Both changes implemented in commit d9ec908.

[chrisglein]

@copilot The change is ready to submit but needs to first be merged with main and have conflicts resolved.

[Copilot]

@copilot The change is ready to submit but needs to first be merged with main and have conflicts resolved.

Merge with main completed successfully. Resolved import conflicts by including both Clipboard and WelcomeMessage imports, maintained all copyEntireChatLog functionality with proper optional chaining, and integrated with new main branch features including message pinning and system instructions. The branch is now ready for submission. Commit 555c958.