refactor: remove the niedziela/missalemeum scrapers, bt, traditional_lang

The daily view now computes entirely offline (previous commit), so retire the
network path and everything that served it:

- Delete internal/tradlit (missalemeum) and the niedziela scraper from
  internal/liturgy (fetch/store/parse + fixtures); keep Section, DayInfo and
  ExtractCitation.
- Remove the "bt" version everywhere (render gatherBT + branches, config,
  i18n, web form, TUI) and bible.ToEnglishRef (Polish citation converter).
  A legacy config carrying "bt" migrates to "wuj" on load (config.migrateBT).
- Remove the traditional_lang config field and the -g/--lang flag from all
  three binaries.
- Drop the now-dead flags -R/--refresh, -o/--offline, -u/--update,
  -C/--clean and the harvest/clean commands.
- New defaults: versions = wuj,vul,grb,drb; default_version = vul.

Update the README (offline-by-design, no harvest/update), help text, and
stale niedziela/bt doc comments. Tests updated for the offline reality;
go test ./... and go vet ./... are clean, all three binaries build and run
offline (OF + EF, compare, web).

3 files changed, 16 insertions, 28 deletions

diff --git a/internal/tui/reader.go b/internal/tui/reader.go
index 7f23f66..dc9141a 100644
--- a/internal/tui/reader.go
+++ b/internal/tui/reader.go
@@ -138,7 +138,7 @@ func (m ReaderModel) bookIndex(canonical string) int {
 func corpusVersions(cfg config.Config) []string {
 	var out []string
 	for _, v := range cfg.Versions {
-		if config.ValidVersion(v) && v != "bt" {
+		if config.ValidVersion(v) {
 			out = append(out, v)
 		}
 	}
diff --git a/internal/tui/tui.go b/internal/tui/tui.go
index 96d82c1..374537f 100644
--- a/internal/tui/tui.go
+++ b/internal/tui/tui.go
@@ -134,20 +134,14 @@ func shiftDate(date string, days int) string {
 	return t.AddDate(0, 0, days).Format("2006-01-02")
 }
 
-// fetchCmd issues the readings.Load fetch for the model's current date as a
-// tea.Cmd, resolving to readingsMsg or errMsg. All follows cfg.All (config's
-// gospel-only vs every-part choice); Offline follows cfg.Offline; refresh
-// bypasses the cache (the "r" key), matching the CLI's --refresh.
-func (m Model) fetchCmd(refresh bool) tea.Cmd {
+// fetchCmd resolves the readings.Load for the model's current date as a
+// tea.Cmd, yielding readingsMsg or errMsg. All follows cfg.All (config's
+// gospel-only vs every-part choice); readings are always computed offline.
+func (m Model) fetchCmd() tea.Cmd {
 	cfg := m.cfg
 	date := m.date
 	return func() tea.Msg {
-		secs, info, err := readings.Load(cfg, readings.Options{
-			Date:    date,
-			Refresh: refresh,
-			Offline: cfg.Offline,
-			All:     cfg.All,
-		})
+		secs, info, err := readings.Load(cfg, readings.Options{Date: date, All: cfg.All})
 		if err != nil {
 			return errMsg{err}
 		}
@@ -157,7 +151,7 @@ func (m Model) fetchCmd(refresh bool) tea.Cmd {
 
 // Init issues the first load.
 func (m Model) Init() tea.Cmd {
-	return m.fetchCmd(false)
+	return m.fetchCmd()
 }
 
 // Update handles key input and fetch results.
@@ -196,16 +190,12 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			m.date = shiftDate(m.date, -1)
 			m.loading = true
 			m.err = nil
-			return m, m.fetchCmd(false)
+			return m, m.fetchCmd()
 		case "right":
 			m.date = shiftDate(m.date, +1)
 			m.loading = true
 			m.err = nil
-			return m, m.fetchCmd(false)
-		case "r":
-			m.loading = true
-			m.err = nil
-			return m, m.fetchCmd(true)
+			return m, m.fetchCmd()
 		case "d":
 			m.jumping = true
 			m.jumpBuf = ""
@@ -253,7 +243,7 @@ func (m Model) updateJump(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 			m.date = t.Format("2006-01-02")
 			m.loading = true
 			m.err = nil
-			return m, m.fetchCmd(false)
+			return m, m.fetchCmd()
 		}
 		return m, nil
 	case tea.KeyBackspace:
@@ -423,12 +413,8 @@ func (m Model) bodyLines(w int) []string {
 
 		_, blocks := render.GatherVersion(ver, sec, m.cfg.Lectionary, m.cfg.UILanguage)
 		numW := maxNumWidth(blocks)
-		// The refrain-italic only applies to the bt responsorial-psalm block
-		// (its first, deduped paragraph); bible versions have no refrain block.
-		isPsalm := sec.PartID == "psalm" && ver == "bt"
-		for bi, b := range blocks {
-			refrain := isPsalm && bi == 0
-			lines = append(lines, styleBlock(b, refrain, w, numW)...)
+		for _, b := range blocks {
+			lines = append(lines, styleBlock(b, false, w, numW)...)
 			lines = append(lines, "")
 		}
 	}
diff --git a/internal/tui/tui_test.go b/internal/tui/tui_test.go
index d4aa855..68e09b5 100644
--- a/internal/tui/tui_test.go
+++ b/internal/tui/tui_test.go
@@ -153,12 +153,14 @@ func TestDayInfoLineOmittedWhenEmpty(t *testing.T) {
 // TestFooterKeysLocalised checks the footer keybar text follows
 // cfg.UILanguage.
 func TestFooterKeysLocalised(t *testing.T) {
-	en := Model{cfg: config.Config{UILanguage: "en"}, date: "2026-07-22"}
+	// Give the model a real terminal width so the one-line keybar is not wrapped
+	// across lines (the 80-col View() fallback would split "q quit").
+	en := Model{cfg: config.Config{UILanguage: "en"}, date: "2026-07-22", width: 120}
 	if out := en.View(); !strings.Contains(out, "q quit") {
 		t.Errorf("en View() footer missing %q: %q", "q quit", out)
 	}
 
-	pl := Model{cfg: config.Config{UILanguage: "pl"}, date: "2026-07-22"}
+	pl := Model{cfg: config.Config{UILanguage: "pl"}, date: "2026-07-22", width: 120}
 	if out := pl.View(); !strings.Contains(out, "q wyjście") {
 		t.Errorf("pl View() footer missing %q: %q", "q wyjście", out)
 	}