[BUG] /feedback command fails with "URL too long" error for longer conversations

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

The /feedback command constructs a GitHub issue URL with conversation/feedback data encoded in query parameters. When the conversation context is long, this URL exceeds browser/server URL length limits (typically ~2000-8000 characters depending on browser/server).

Environment:

• Claude Code version: (run claude --version)
• OS: macOS Darwin 25.2.0
• Browser: (your default browser)

What Should Happen?

Expected behavior:
Feedback should be submitted successfully regardless of conversation length.

Suggested fix:
Instead of encoding feedback in URL query parameters, consider:

1. Using a POST request to a feedback endpoint that then creates the GitHub issue
2. Opening a blank issue template and copying feedback to clipboard for the user to paste
3. Truncating the context to fit within URL limits with a note that full context was truncated

Error Messages/Logs

Github server responded with "oops url too long" or something similar.

Steps to Reproduce

Steps to reproduce:

1. Have a moderately long conversation with Claude Code
2. Run /feedback
3. Browser opens GitHub but returns an error about URL being too long

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.1 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

Browser: Brave
MacOS: Version 26.2 (25C56)