Only cache capsule geometry after a successful relayout

The capsule geometry cache must reflect only applied layout, otherwise a transient resize or position failure would permanently suppress future retries for the same monitor and translation state. The cache is now written only after the relayout call succeeds, so a failed attempt can be retried on later emits.

Constraint: Keep the fix local to the capsule relayout path.
Rejected: Cache before calling relayout | can strand the capsule on stale geometry after a transient failure.
Confidence: high
Scope-risk: narrow
Directive: Never treat capsule geometry as applied until the window manager has accepted the resize/reposition.
Tested: cargo test --manifest-path src-tauri/Cargo.toml --lib -- --nocapture
Not-tested: Live retry behavior under actual window-manager failures.

openless-all/app/src-tauri/src/coordinator.rs

@@ -2502,13 +2502,17 @@ fn maybe_position_capsule_bottom_center<R: tauri::Runtime>(
         monitor_height: monitor.size().height,
         scale_bits: monitor.scale_factor().to_bits(),
     };
-    let mut last = inner.capsule_layout.lock();
-    if last.as_ref() == Some(&next) {
+    {
+        let last = inner.capsule_layout.lock();
+        if last.as_ref() == Some(&next) {
+            return;
+        }
+    }
+    if crate::position_capsule_bottom_center(window, translation_active).is_ok() {
+        let mut last = inner.capsule_layout.lock();
+        *last = Some(next);
         return;
     }
-    *last = Some(next);
-    drop(last);
-    let _ = crate::position_capsule_bottom_center(window, translation_active);
 }
 
 // ─────────────────────────── audio bridge ───────────────────────────