Replace the static-scan boot in the TUI with a reactive scan loop anchored
on bubbletea.Tick and user-driven 'r' rescan.
Scan loop (tea.Tick instead of goroutine — no leak):
- Init returns a tick Cmd when --interval > 0; on each tick the model
fires scanCmd and chains the next tick in the Update handler, producing
a self-regulating interval loop that stops naturally on quit
- 'r' key triggers an immediate rescan when the model is not already
loading, for on-demand refresh
- scanResultMsg handler records prevResult, computes status.Changed into a
changed set (keyed by repo path), and updates lastScan
- scanErrorMsg stores the error text on the model (displayed in the status
bar) without stopping the loop
Change detection in the view:
- Repos whose state changed since the previous scan get a ▲ prefix (yellow
bold) in the repo list, distinguishing them from the > cursor
Status bar improvements:
- Countdown "next: 23s" when --interval is active, computed from
time.Since(lastScan); "scanning…" shown during async scans
- Updated keybinding hints: r refresh, g/G home/end
Navigation additions:
- g/Home jumps to top, G/End jumps to bottom
Styles:
- Changed style (yellow bold foreground) for ▲ markers
- Styles struct now includes all five variants
Tests:
- Home/End keys navigate to first/last repo
- 'r' fires scanCmd when not loading
- ▲ marker appears for changed repos
- Interval tick fires scan when idle
- Countdown "next:" shown in status bar
Verified: go build, go vet, go test -race (12 packages), gofmt clean.