web: declutter the UI, fix date arrows, red * for bookmarked verses in reader

Daily page (index.html):
- Date arrows now step the date input client-side and dispatch its change, so
  they move relative to the CURRENT day and update the shown date (they were
  stuck one step from the initial date, computed server-side).
- Theme picker removed (theme lives only in /settings now); bookmarks link
  removed (bookmarks belong to the reader, not the daily readings).
- reader/settings nav + the download links move to a right-aligned .controls-side
  cluster; essential controls (date, lectionary, versions, parts, layout, mono)
  stay on the left. mono stops its change bubbling so it no longer refetches.

Reader (reader.html + RenderPassage): a bookmarked verse now shows a red "*"
(end of line in columns, after the verse number interlinear). Threaded a
marked set (keyed "chap:verse") through the reader render path only; the daily
RenderReadings path is untouched.

Settings (settings.html): Save button moved to the top; removed offline (dead),
width and pager (CLI/TUI-only, no web effect) -- their config values are
preserved since the handler no longer reads/zeroes them.

Footer: source/licence centred.

Web tests + full suite green both build modes.

1 files changed, 17 insertions, 9 deletions

diff --git a/internal/web/render.go b/internal/web/render.go
index 3ea52e3..b7fb3ed 100644
--- a/internal/web/render.go
+++ b/internal/web/render.go
@@ -59,6 +59,7 @@ type columnView struct {
 type blockView struct {
 	VNum, Text string
 	Refrain    bool
+	Marked     bool // the reader flags a bookmarked verse with a red "*"
 }
 
 // ilSectionView, ilVerseView and ilLineView are what
@@ -74,8 +75,9 @@ type ilSectionView struct {
 }
 
 type ilVerseView struct {
-	VNum  string
-	Lines []ilLineView
+	VNum   string
+	Lines  []ilLineView
+	Marked bool // the reader flags a bookmarked verse with a red "*"
 }
 
 type ilLineView struct {
@@ -314,19 +316,21 @@ func UnionChapters(canonical string) []int {
 // name in the sigla dialect (the section heading is "<name> <chap>"). versions
 // are corpus versions; one lacking the chapter shows a localized "(not in X)"
 // note (columns) or is skipped (interlinear). lang localizes the version labels.
-func RenderPassage(canonical, name string, chap int, versions []string, display, lang string) template.HTML {
+// marked (keyed by "chap:verse") flags verses that carry a bookmark, so the
+// reader can show a red "*"; pass nil for no marks.
+func RenderPassage(canonical, name string, chap int, versions []string, display, lang string, marked map[string]bool) template.HTML {
 	heading := fmt.Sprintf("%s %d", name, chap)
 	switch display {
 	case "interlinear":
-		return renderTemplate("readings-interlinear.html", passageInterlinear(canonical, heading, chap, versions, lang))
+		return renderTemplate("readings-interlinear.html", passageInterlinear(canonical, heading, chap, versions, lang, marked))
 	case "vertical":
-		return renderTemplate("readings-vertical.html", passageColumns(canonical, heading, chap, versions, lang))
+		return renderTemplate("readings-vertical.html", passageColumns(canonical, heading, chap, versions, lang, marked))
 	default:
-		return renderTemplate("readings.html", passageColumns(canonical, heading, chap, versions, lang))
+		return renderTemplate("readings.html", passageColumns(canonical, heading, chap, versions, lang, marked))
 	}
 }
 
-func passageColumns(canonical, heading string, chap int, versions []string, lang string) []sectionView {
+func passageColumns(canonical, heading string, chap int, versions []string, lang string, marked map[string]bool) []sectionView {
 	cols := make([]columnView, 0, len(versions))
 	for _, v := range versions {
 		verses := bible.Verses(v, canonical, chap)
@@ -335,14 +339,15 @@ func passageColumns(canonical, heading string, chap int, versions []string, lang
 			blocks = append(blocks, blockView{Text: fmt.Sprintf(i18n.Get(lang).NoVersion, v)})
 		}
 		for _, ve := range verses {
-			blocks = append(blocks, blockView{VNum: fmt.Sprintf("%d:%d", ve.Chapter, ve.Verse), Text: ve.Text})
+			vnum := fmt.Sprintf("%d:%d", ve.Chapter, ve.Verse)
+			blocks = append(blocks, blockView{VNum: vnum, Text: ve.Text, Marked: marked[vnum]})
 		}
 		cols = append(cols, columnView{Label: webVersionLabel(v, lang), Blocks: blocks})
 	}
 	return []sectionView{{Heading: heading, PartID: "reader", Columns: cols}}
 }
 
-func passageInterlinear(canonical, heading string, chap int, versions []string, lang string) []ilSectionView {
+func passageInterlinear(canonical, heading string, chap int, versions []string, lang string, marked map[string]bool) []ilSectionView {
 	var sets []verseSet
 	for _, v := range versions {
 		verses := bible.Verses(v, canonical, chap)
@@ -357,6 +362,9 @@ func passageInterlinear(canonical, heading string, chap int, versions []string,
 		return []ilSectionView{view}
 	}
 	view.Verses = interleaveVerses(sets)
+	for i := range view.Verses {
+		view.Verses[i].Marked = marked[view.Verses[i].VNum]
+	}
 	return []ilSectionView{view}
 }