Section + ChatListNavLink.android: align in-card chat row divider with desktop; canvas to 0.94

Two changes:

1) Theme.kt LIGHT canvas: 0.97f → 0.94f (#F0F0F0). User wants more
   contrast against cards. With Material's default 0.04-alpha hover
   (#F5F5F5) this puts hover LIGHTER than canvas by 5 units — unusual
   direction but it's the user's call; they'll evaluate visually.

2) ChatListNavLinkView.android: when rendered inside a SectionView card
   (e.g. contact list inside NewChatSheet after the forEach-into-card
   refactor), use SectionDivider() — same 2dp full-width canvas-color
   divider as desktop. Outside a card (main chat list), fall back to
   the original Material `Divider(Modifier.padding(horizontal = 8.dp))`
   so unchanged for that context.

3) LocalInSectionCard made `internal` so the android-specific file can
   read it. Same pattern as LocalAppColors etc.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/multiplatform/common/src/androidMain/kotlin/chat/simplex/common/views/chatlist/ChatListNavLinkView.android.kt

@@ -1,5 +1,6 @@
 package chat.simplex.common.views.chatlist
 
+import SectionDivider
 import androidx.compose.foundation.*
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.Divider
@@ -8,6 +9,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import chat.simplex.common.platform.onRightClick
+import chat.simplex.common.views.helpers.LocalInSectionCard
 import chat.simplex.common.views.helpers.*
 
 @Composable
@@ -38,5 +40,9 @@ actual fun ChatListNavLinkLayout(
       DefaultDropdownMenu(showMenu, dropdownMenuItems = dropdownMenuItems)
     }
   }
-  Divider(Modifier.padding(horizontal = 8.dp))
+  if (LocalInSectionCard.current) {
+    SectionDivider()
+  } else {
+    Divider(Modifier.padding(horizontal = 8.dp))
+  }
 }

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/ui/theme/Theme.kt

@@ -607,7 +607,7 @@ fun canvasColorForCurrentTheme(): Color {
   val theme = CurrentColors.value
   val c = theme.colors
   return when (theme.base) {
-    DefaultTheme.LIGHT -> c.background.mixWith(c.onBackground, 0.97f)
+    DefaultTheme.LIGHT -> c.background.mixWith(c.onBackground, 0.94f)
     DefaultTheme.SIMPLEX -> c.background.darker(0.4f)
     else -> c.background
   }

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/helpers/Section.kt

@@ -31,7 +31,7 @@ val CARD_ITEM_PADDING = CARD_PADDING - 1.dp
 // Set to true by SectionView around its inner Column. SectionItemView reads it
 // to decide whether to draw the 2dp bottom divider. False default keeps
 // standalone usage (alerts, pickers, custom contexts) unaffected.
-private val LocalInSectionCard = staticCompositionLocalOf { false }
+internal val LocalInSectionCard = staticCompositionLocalOf { false }
 
 
 @Composable