Fix payment display and dashboard refresh functionality

- Fix 'paid in full for others' payments showing CHF 0.00 instead of actual amount
- Add time-based sorting to payments (date + createdAt) for proper chronological order
- Redirect to dashboard after adding payment instead of payments list
- Implement complete dashboard refresh after payment deletion via modal
- Fix dashboard component reactivity for single debtor view updates

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/routes/cospend/recurring/+page.svelte

@@ -195,7 +195,7 @@
                     {:else if split.amount < 0}
                       gets {formatCurrency(split.amount)}
                     {:else}
-                      even
+                      owes {formatCurrency(split.amount)}
                     {/if}
                   </span>
                 </div>