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, 0 insertions, 9 deletions

diff --git a/internal/web/templates/reader.html b/internal/web/templates/reader.html
index 36cc8a1..9fa857d 100644
--- a/internal/web/templates/reader.html
+++ b/internal/web/templates/reader.html
@@ -70,15 +70,6 @@
     <div id="pane">{{.Reading}}</div>
   </div>
 
-  <label class="theme-picker">{{.L.Theme}}
-    <select id="theme-select"
-            onchange="var o=document.getElementById('theme'),n=o.cloneNode(false);n.setAttribute('href','/theme.css?name='+encodeURIComponent(this.value));o.replaceWith(n);">
-      {{range .ThemeOpts}}
-      <option value="{{.Name}}" {{if .Selected}}selected{{end}}>{{.Name}}</option>
-      {{end}}
-    </select>
-  </label>
-
   <label class="mono-toggle"><input type="checkbox" {{if .Mono}}checked{{end}}
          onchange="document.body.classList.toggle('mono', this.checked)"> {{.L.Mono}}</label>