M12f: S-16 lost version read-only, S-22 versions from /health, settle start without a partner (D-109 to D-111)

- Rejection.lost: RejectedVersion (the pushed entity from sync_rejections.rejected_payload as a ledger row, account,
  payer, split, notes, deleted); S-16 "Öppna" shows it read-only in a dialog with "Visa nuvarande version" (S-8/S-10);
  without one it opens the current version as before. Ledger rows take a null onClick (read-only).
- AboutState.schemaVersion; AboutRepositoryImpl calls E-1 /health once per collection when online; header fallback.
  S-22 shows "1.1.0 (schema 3)".
- SettlementRepository.start/recompute return null without a session or partner; save is Invalid(payer); no
  checkNotNull/requireNotNull in :data.
- :feature:home screenshot harness: one more frame and an idle looper before each capture; the committed sv_dark,
  200 % and dialog goldens were one variant stale (light instead of dark, en instead of sv_200).
- Tests: lost version (stale, refused deletion, unreadable payload), /health online and offline, settle without a
  partner, category reorder PATCHes, recurring toWire splits, §9.2 effect cases.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TQd3pEP9UeN2uifbHknQ7B

android/core/design/src/main/kotlin/se/hagstedt/kvitt/design/component/Ledger.kt

@@ -82,9 +82,10 @@ private fun String.lowerFirst(): String = replaceFirstChar { it.lowercaseChar()
  * An expense as a segmented-group item (design-spec §3.5): category tile 40, description over the effect line, amount
  * over the date with the pending marker. At ≥ 1.5× font scale the amount column moves under the text. One node:
  * "ICA Maxi Lindhagen, Mat & hushåll, 1 247,60 kronor, 16 oktober, du lånade 623,80 kronor, väntar på synk".
+ * [onClick] null draws the row read-only, without a ripple or the button role (S-16's lost version, D-109).
  */
 @Composable
-fun ExpenseRow(item: SegmentedItemScope, row: LedgerRow.ExpenseRow, onClick: () -> Unit, modifier: Modifier = Modifier) {
+fun ExpenseRow(item: SegmentedItemScope, row: LedgerRow.ExpenseRow, onClick: (() -> Unit)?, modifier: Modifier = Modifier) {
     val separator = stringResource(R.string.common_separator_comma)
     val spoken = listOfNotNull(
         row.description,
@@ -110,7 +111,7 @@ fun ExpenseRow(item: SegmentedItemScope, row: LedgerRow.ExpenseRow, onClick: ()
  * One node "Anna betalade dig 800,00 kronor, 2 konton, 6 oktober".
  */
 @Composable
-fun SettlementRow(item: SegmentedItemScope, row: LedgerRow.SettlementRow, typeLabel: String, onClick: () -> Unit, modifier: Modifier = Modifier) {
+fun SettlementRow(item: SegmentedItemScope, row: LedgerRow.SettlementRow, typeLabel: String, onClick: (() -> Unit)?, modifier: Modifier = Modifier) {
     val household = LocalKvittHousehold.current
     val accounts = pluralStringResource(R.plurals.ledger_settlement_accounts, row.accountCount, row.accountCount)
     val title = settlementSentence(row.from, row.to, money(row.amountOre), household.isViewer(row.to.id))
@@ -155,7 +156,7 @@ fun SettlementTile(size: Dp, modifier: Modifier = Modifier) {
 @Composable
 private fun LedgerItem(
     item: SegmentedItemScope,
-    onClick: () -> Unit,
+    onClick: (() -> Unit)?,
     spoken: String,
     modifier: Modifier,
     fill: androidx.compose.ui.graphics.Color,
@@ -168,8 +169,11 @@ private fun LedgerItem(
             .fillMaxWidth()
             .clip(item.shape)
             .background(fill)
-            .clickable(onClick = onClick)
-            .clearAndSetSemantics { contentDescription = spoken; role = Role.Button }
+            .then(if (onClick != null) Modifier.clickable(onClick = onClick) else Modifier)
+            .clearAndSetSemantics {
+                contentDescription = spoken
+                if (onClick != null) role = Role.Button
+            }
             .heightIn(min = KvittTheme.spacing.ledgerRowMin)
             .padding(horizontal = KvittTheme.spacing.rowHorizontal, vertical = KvittTheme.spacing.rowVertical),
         verticalAlignment = if (large) Alignment.Top else Alignment.CenterVertically,