Open reading settings in the left-hand panel on large screens

On a tablet or an unfolded foldable the gear now opens reading settings
as a panel on the left, where the dictionary opens, instead of a bottom
sheet. The page stays in view beside it, so a change of theme, font,
weight or size shows on the poem as it is made. The sheet and the panel
share one ReadingSettingsContent; phones keep the sheet.

Adds wireframe 8 and notes in the design docs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RhmDdrN5hgWrgRcFLAMsV6

design/components/ColumnBrowser/README.md

@@ -1,6 +1,6 @@
 # ColumnBrowser
 
-The layout for tablets and unfolded foldables. A narrow column of poets sits on the right. Beside it is a column for each level of the open book (books › chapters › poems), and the open page fills the rest of the screen on the left. Phones keep today's navigation. Built in `app/src/main/java/com/ganjoor/android/ui/ColumnBrowser.kt`; wireframes are in `design/wireframes/`.
+The layout for tablets and unfolded foldables. A narrow column of poets sits on the right. Beside it is a column for each level of the open book (books › chapters › poems), and the open page fills the rest of the screen on the left. Phones keep today's navigation. Built in `app/src/main/java/com/ganjoor/android/ui/ColumnBrowser.kt`; wireframes are in `design/wireframes/` (1–8).
 
 ## Window sizes
 
@@ -46,6 +46,13 @@ On large screens, tapping a word opens **WordPanel** on the left instead of the
 - The tapped word stays highlighted in the verse (`secondary-container` / `on-secondary-container`), on phones too.
 - ✕ or Back closes the panel.
 
+## Reading settings
+
+On large screens the gear opens **ReadingSettingsPanel** on the left, where the dictionary opens, instead of the bottom sheet:
+- It has the same width and surface as the dictionary panel, with a "Reading settings" header and a ✕ button. The settings and their order are the same as in the sheet.
+- The page stays in view beside the panel, so a change of theme, font, weight or size shows on the poem as it's made.
+- ✕ or Back closes it. Phones keep the bottom sheet.
+
 ## Loading
 
 Nothing covers the whole screen while it loads, on phones as well:

design/components/ReadingSettingsSheet/README.md

@@ -7,3 +7,4 @@ The Material bottom sheet behind the gear icon: theme, OLED, font, weight, text
 - Order: Theme chips → OLED toggle → Font chips → Weight chips → Text size slider (14–40, steps of 2) → **live preview** of a hemistich in the chosen reading style → Language chips → Offline mode → Show summaries → AI assistant, About & licences as TextButtons.
 - Every group has a **SectionLabel**. Changes apply immediately; there is no Save.
 - Changing language recreates the activity.
+- On tablets and unfolded foldables the same settings open as a panel on the left instead (`ReadingSettingsPanel`, see ColumnBrowser), so the poem stays in view while they change.