plans: profile picker bottom bar: entry points and size of the hidden part

plans/2026-09-05-profile-picker-bottom-bar.md

@@ -1,7 +1,7 @@
 # The profile picker's last row is hidden under the bottom app bar
 
 `ActiveProfilePicker` in `newchat/NewChatView.kt` — the "Select chat profile" screen,
-reached from an invitation link and from the share sheet.
+reached from New chat → 1-time link → "Share profile" (Android and desktop) and from the share sheet (Android).
 
 ## The defect
 
@@ -18,13 +18,13 @@ Against that, the list's only bottom clearance is its trailing spacer:
 
 | | |
 |---|---|
-| obscured by the bar | `AppBarHeight` 56.dp + navigation bar |
+| obscured by the bar | `AppBarHeight` 56.dp × √(app font scale) + navigation bar |
 | clearance in the list | `DEFAULT_BOTTOM_PADDING` 48.dp |
 | `LazyColumnWithScrollBar` `contentPadding` | `0.dp` (default, not overridden) |
 
-The shortfall is `8.dp` plus the navigation bar — commonly 32–56.dp, and the rows are
-`DEFAULT_MIN_SECTION_ITEM_HEIGHT + 8 = 58.dp`, so roughly one whole row is unreachable.
-It only shows once the list is long enough to scroll; with few profiles nothing is hidden,
+The shortfall is `8.dp` (more at larger app font scales) plus the navigation bar — commonly 32–56.dp, and the rows are
+`DEFAULT_MIN_SECTION_ITEM_HEIGHT + 8 = 58.dp`, so on Android with 3-button navigation nearly a whole row stays hidden; on desktop (no navigation bar) about 8.dp of it.
+It only shows once the list nearly fills the screen; with few profiles nothing is hidden,
 which is why it survived.
 
 `oneHandUI` defaults to **true**, so this is the default layout on Android rather than an
@@ -40,7 +40,7 @@ fully functional, so nothing draws attention to it.
 
 #7329 adds an **"Add profile"** row at the end of this list. That moves a deliberately
 sought affordance into the broken position: on a default Android install with enough
-profiles to scroll, the button the feature exists for cannot be reached at all. The feature
+profiles to scroll, the button the feature exists for is mostly hidden (fully with 3-button navigation). The feature
 is unusable on Android without this fix, so #7329 depends on it.
 
 Splitting it out anyway, because the defect is entirely pre-existing and worth fixing on
@@ -63,7 +63,7 @@ moves. No change when one-hand UI is off.
 
 ## Testing
 
-Open "Select chat profile" from an invitation link on Android with one-hand UI on and
+Open "Select chat profile" from New chat → 1-time link → "Share profile" on desktop and Android with one-hand UI on and
 enough profiles that the list scrolls; the last row must be fully visible above the search
 bar. Repeat with one-hand UI off — the layout must be unchanged. Repeat from the share
 sheet, which uses the same picker with `contactConnection = null`.