Add app-wide feedback forms with GitHub label routing

[Cheggin]

Problem

Users need an easy way to submit complaints and feedback from inside the desktop app instead of having to leave the product and manually file a GitHub issue.

The feedback flow should route reports into GitHub with the right existing repository labels. Do not invent new labels for this; use the labels already configured in the repo.

Scope

• Add clear feedback entry points throughout the app, especially settings/help surfaces, error states, failed task states, and places where users are likely to hit friction.
• Provide a lightweight form for complaints, bug reports, feature requests, and questions.
• Map form categories to existing GitHub labels such as bug, enhancement, question, area:*, and appropriate priority:* labels where the app can infer severity.
• Include useful diagnostic context when the user consents, such as app version, platform, relevant session id, and selected log snippets.
• Make the submitted issue/comment readable and actionable for maintainers.

Acceptance criteria

• Users can submit feedback without manually opening GitHub and choosing labels themselves.
• The GitHub submission uses only labels that already exist in browser-use/desktop.
• The form has complaint-oriented copy and does not make users decide implementation details.
• Sensitive data is excluded by default, and any diagnostic attachment/log inclusion requires clear user consent.
• There is test coverage for category-to-label mapping and the submission payload shape.