Feature request: allow /feedback submission without attaching session/context (privacy opt-out)

Summary

Allow submitting /feedback without attaching session/conversation context — i.e. an explicit opt-out (or, better, make diagnostics opt-in). Submitting feedback and sharing session data should be independent choices.

Problem

Today, /feedback appears to bundle session/conversation context with the report, and the flow doesn't surface a clear way to send feedback while excluding that context. For anyone working in a private or client codebase, this is a blocker: the feedback itself (e.g. a feature request about the spinner, or a general bug) has nothing to do with the repo, but there's no way to send it without potentially including details about the current work.

Current workaround

Open a brand-new session in a throwaway directory outside any git context, then run /feedback there so nothing sensitive is in scope. This works but is clearly a hack — users shouldn't have to spin up an isolated session just to file a clean report.

Requested behavior

• A clear control at submission time: send feedback with or without session/diagnostic context (e.g. a prompt "Include session context to help debugging? [y/N]").
• Ideally privacy-by-default: context attachment is opt-in, not opt-out.
• Applies to both feature requests and bug reports (a bug report may legitimately want to include context; a feature request usually doesn't — let the user decide per-submission).

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_Filed by Claude (via Claude Code) on behalf of @WeHateNick._