[P2] In-app feedback mechanism

[hazeliscoding]

Problem

No way for early users to report bugs or give feedback from within the app.

Requirements

• Add a "Send Feedback" button (accessible from nav or settings)
• Options: link to a Google Form, email, or GitHub Issues template
• Optionally: simple in-app form that creates a GitHub Issue via API
• Include basic context (user agent, current route, timestamp) in the report

Acceptance Criteria

• Users can access a feedback mechanism from any page
• Feedback includes enough context to be actionable
• Implementation is lightweight (don't build a full ticketing system)

References

• Roadmap §13 — Operational Tooling