fix(v4): let cancellation propagate through best-effort PostCommitDedup

The post-commit dedup catch-all swallowed OperationCanceledException too,
silently treating a cancelled batch as a logged dedup failure. Add a
when (ex is not OperationCanceledException) filter so cancellation
propagates while genuine dedup failures stay best-effort (logged and
healed by the reconcile service).

Author: ryceg

src/Infrastructure/Nocturne.Infrastructure.Data/Repositories/V4/BGCheckRepository.cs

@@ -155,7 +155,7 @@ protected override async Task PostCommitDedupAsync(
 
             await _deduplicationService.DeduplicateBatchAsync(RecordType.BGCheck, dedupInputs, ct);
         }
-        catch (Exception ex)
+        catch (Exception ex) when (ex is not OperationCanceledException)
         {
             _logger.LogWarning(ex, "Failed to deduplicate {Type} batch of {Count}", "BGCheck", inserted.Count);
         }

src/Infrastructure/Nocturne.Infrastructure.Data/Repositories/V4/BolusCalculationRepository.cs

@@ -143,7 +143,7 @@ protected override async Task PostCommitDedupAsync(
 
             await _deduplicationService.DeduplicateBatchAsync(RecordType.BolusCalculation, dedupInputs, ct);
         }
-        catch (Exception ex)
+        catch (Exception ex) when (ex is not OperationCanceledException)
         {
             _logger.LogWarning(ex, "Failed to deduplicate {Type} batch of {Count}", "BolusCalculation", inserted.Count);
         }

src/Infrastructure/Nocturne.Infrastructure.Data/Repositories/V4/BolusRepository.cs

@@ -303,7 +303,7 @@ protected override async Task PostCommitDedupAsync(
 
             await _deduplicationService.DeduplicateBatchAsync(RecordType.Bolus, dedupInputs, ct);
         }
-        catch (Exception ex)
+        catch (Exception ex) when (ex is not OperationCanceledException)
         {
             _logger.LogWarning(ex, "Failed to deduplicate {Type} batch of {Count}", "Bolus", inserted.Count);
         }

src/Infrastructure/Nocturne.Infrastructure.Data/Repositories/V4/CarbIntakeRepository.cs

@@ -302,7 +302,7 @@ protected override async Task PostCommitDedupAsync(
 
             await _deduplicationService.DeduplicateBatchAsync(RecordType.CarbIntake, dedupInputs, ct);
         }
-        catch (Exception ex)
+        catch (Exception ex) when (ex is not OperationCanceledException)
         {
             _logger.LogWarning(ex, "Failed to deduplicate {Type} batch of {Count}", "CarbIntake", inserted.Count);
         }

src/Infrastructure/Nocturne.Infrastructure.Data/Repositories/V4/DeviceEventRepository.cs

@@ -170,7 +170,7 @@ protected override async Task PostCommitDedupAsync(
 
             await _deduplicationService.DeduplicateBatchAsync(RecordType.DeviceEvent, dedupInputs, ct);
         }
-        catch (Exception ex)
+        catch (Exception ex) when (ex is not OperationCanceledException)
         {
             _logger.LogWarning(ex, "Failed to deduplicate {Type} batch of {Count}", "DeviceEvent", inserted.Count);
         }

src/Infrastructure/Nocturne.Infrastructure.Data/Repositories/V4/NoteRepository.cs

@@ -169,7 +169,7 @@ protected override async Task PostCommitDedupAsync(
 
             await _deduplicationService.DeduplicateBatchAsync(RecordType.Note, dedupInputs, ct);
         }
-        catch (Exception ex)
+        catch (Exception ex) when (ex is not OperationCanceledException)
         {
             _logger.LogWarning(ex, "Failed to deduplicate {Type} batch of {Count}", "Note", inserted.Count);
         }

src/Infrastructure/Nocturne.Infrastructure.Data/Repositories/V4/SensorGlucoseRepository.cs

@@ -277,7 +277,7 @@ protected override async Task PostCommitDedupAsync(
 
             await _deduplicationService.DeduplicateBatchAsync(RecordType.SensorGlucose, dedupInputs, ct);
         }
-        catch (Exception ex)
+        catch (Exception ex) when (ex is not OperationCanceledException)
         {
             _logger.LogWarning(ex, "Failed to deduplicate {Type} batch of {Count}", "SensorGlucose", inserted.Count);
         }

src/Infrastructure/Nocturne.Infrastructure.Data/Repositories/V4/TempBasalRepository.cs

@@ -327,7 +327,7 @@ public async Task<IEnumerable<TempBasal>> BulkCreateAsync(
 
                 await _deduplicationService.DeduplicateBatchAsync(RecordType.TempBasal, dedupInputs, ct);
             }
-            catch (Exception ex)
+            catch (Exception ex) when (ex is not OperationCanceledException)
             {
                 _logger.LogWarning(ex, "Failed to deduplicate {Type} batch of {Count}", "TempBasal", entities.Count);
             }