Add customizable link render template setting to /settings

[Copilot]

Adds the ability for server administrators to customize how fixed links are displayed using template placeholders in the /settings command.

What's New

Previously, FixTweetBot used a fixed format for displaying fixed links:

[Original Tweet](<https://twitter.com/user/status/123>) • [Author](<https://twitter.com/author>) • [FxTwitter](https://fxtwitter.com/user/status/123)

Now administrators can create custom templates using placeholders like:

{member} posted {fixed_link} by {author} at {datetime}

Which renders as:

@User posted [Fixed Tweet](https://fxtwitter.com/user/status/123) by [OriginalAuthor](<https://twitter.com/OriginalAuthor>) at 2023-12-19 12:00

Available Template Placeholders

• {member} - Discord mention of the user who posted the link
• {fixed_link} - The fixed link with markdown formatting [label](url)
• {author} - Original content author with link if available
• {original_link} - Original link with markdown formatting
• {datetime} - Current timestamp (YYYY-MM-DD HH:MM)
• {fixed_url} - Just the fixed URL without formatting
• {original_url} - Just the original URL without formatting

UI Features

• New setting: "📝 Link render template" in /settings menu
• Visual indicators: 🟢 when custom template is active, 🔴 when using default
• Template editor: Multi-line textarea with 500 character limit
• Reset option: One-click return to default format
• Live preview: Shows current template or "(Using default format)"
• Input validation: Prevents overly long templates with helpful error messages

Technical Implementation

• Database: Added link_render_template TEXT field to guilds table with migration
• Backwards compatible: Existing servers continue using default format unchanged
• Error handling: Invalid templates gracefully fall back to default format
• Security: Only predefined placeholders supported, no code execution risks
• Performance: Template rendering only occurs when custom template is set

Example Use Cases

Simple mention format:

{member} shared: {fixed_url}

Detailed format with context:

🔗 {member} posted {fixed_link} by {author} at {datetime}

Minimal format:

{fixed_link}

This enhancement provides servers with flexibility to match their community's style and preferences while maintaining the bot's core functionality.

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.