Move SectionTextFooter / Spacer out of cards in 5 screens

Fixes from the user's verified list of misplaced footers/spacers:

- ChatInfoView: SimpleX address footer ("You can share this address
  with your contacts to let them connect with you.") moved out of the
  address SectionView lambda.
- GroupMemberInfoView: same string for member address.
- Appearance: SectionSpacer in the Image-wallpaper branch (after
  "Remove image" button) removed — it created 30dp empty padding
  inside the THEMES card only when a custom image was selected.
- NotificationsSettingsView: Xiaomi battery-optimization footer
  ("Xiaomi devices: please enable Autostart...") moved out of the
  notifications SectionView lambda (visible only on Xiaomi devices
  in Periodic/Service notification mode).
- ConnectMobileView: dropped the 20dp Spacer that sat inside the QR
  SectionView after the developer-tools "Share link" row — visible
  as extra padding below Share link inside the card.

Same pre-card-chrome pattern as other moves: helpers placed inside
SectionView lambdas before PR #6777 rendered fine when SectionView was
a plain Column; after card chrome they render inside the white card.
Moved them outside so footers read as captions and spacers actually
separate cards.

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

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

@@ -631,8 +631,8 @@ fun ChatInfoLayout(
         SimpleXLinkQRCode(contact.contactLink)
         val clipboard = LocalClipboardManager.current
         ShareAddressButton { clipboard.shareText(simplexChatLink(contact.contactLink)) }
-        SectionTextFooter(stringResource(MR.strings.you_can_share_this_address_with_your_contacts).format(contact.displayName))
       }
+      SectionTextFooter(stringResource(MR.strings.you_can_share_this_address_with_your_contacts).format(contact.displayName))
       SectionDividerSpaced(maxTopPadding = true)
     }
 

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/group/GroupMemberInfoView.kt

@@ -577,8 +577,8 @@ fun GroupMemberInfoLayout(
         } else {
           ConnectViaAddressButton(onClick = { connectViaAddress(member.contactLink) })
         }
-        SectionTextFooter(stringResource(MR.strings.you_can_share_this_address_with_your_contacts).format(member.displayName))
       }
+      SectionTextFooter(stringResource(MR.strings.you_can_share_this_address_with_your_contacts).format(member.displayName))
       SectionDividerSpaced()
     }
 

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/remote/ConnectMobileView.kt

@@ -211,9 +211,9 @@ private fun ConnectMobileViewLayout(
             Text(generalGetString(MR.strings.share_link), color = MaterialTheme.colors.primary)
           }
         }
-
-        Spacer(Modifier.height(DEFAULT_PADDING))
       }
+
+
       if (deviceName != null || sessionCode != null) {
         SectionView(stringResource(MR.strings.connected_mobile).uppercase()) {
           SelectionContainer {

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/usersettings/Appearance.kt

@@ -558,7 +558,6 @@ object AppearanceScope {
             color = if (chatModel.remoteHostId != null && themeUserDestination.value != null) MaterialTheme.colors.secondary else MaterialTheme.colors.primary
           )
         }
-        SectionSpacer()
       }
 
       val state: State<DefaultThemeMode?> = remember(appPrefs.currentTheme.get()) {

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/usersettings/NotificationsSettingsView.kt

@@ -74,9 +74,9 @@ fun NotificationsSettingsLayout(
           color = MaterialTheme.colors.secondary
         )
       }
-      if (platform.androidIsXiaomiDevice() && (notificationsMode.value == NotificationsMode.PERIODIC || notificationsMode.value == NotificationsMode.SERVICE)) {
-        SectionTextFooter(annotatedStringResource(MR.strings.xiaomi_ignore_battery_optimization))
-      }
+    }
+    if (platform.androidIsXiaomiDevice() && (notificationsMode.value == NotificationsMode.PERIODIC || notificationsMode.value == NotificationsMode.SERVICE)) {
+      SectionTextFooter(annotatedStringResource(MR.strings.xiaomi_ignore_battery_optimization))
     }
     SectionBottomSpacer()
   }