TODO

Fork support

Add UI for fork (see PLAN.md section 1):
- Fork badge on repo list cards (repo_list.rs::render_card).
- "Forked from …" text button in the repo detail header (repo_detail/mod.rs::render_header) and About dialog.
- Clicking the upstream opens it as a center panel (shared open_repo_panel helper).

Virtualize issue/PR comment threads (issue_detail.rs::render_comments, pull_request_detail.rs::render_comments). Harder than the list tabs: comment cards have variable heights and live inside a scrolling page together with the body and the comment form, so this needs either measured item sizes or restructuring the whole discussion tab into one virtual list. (Comment bodies are already cached as SharedString, so re-renders are cheap element constructions, not byte copies.)

Narrow RepoStore's BackendEvent::NostrUpdate relevance filter (crates/signed_state/src/repo.rs:65-98): any comment/status/label/deletion from anywhere wakes every open repo store; match only events referencing this repo's roots or coordinate.
Reconsider ban_relay_on_mismatch(true) (crates/signed_nostr/src/backend.rs:49): combined with many short-lived auto-close subscriptions, a late event after EOSE can permanently ban a relay for the session.
Relays added for a repo stay in the pool forever and grow unboundedly (crates/signed_state/src/backend.rs); consider removing repo relays when the last panel for that repo closes.