Add PHP Analyzer Plugin and Composer Lock Data Handling

- Implemented the PhpAnalyzerPlugin to analyze PHP projects.
- Created ComposerLockData class to represent data from composer.lock files.
- Developed ComposerLockReader to load and parse composer.lock files asynchronously.
- Introduced ComposerPackage class to encapsulate package details.
- Added PhpPackage class to represent PHP packages with metadata and evidence.
- Implemented PhpPackageCollector to gather packages from ComposerLockData.
- Created PhpLanguageAnalyzer to perform analysis and emit results.
- Added capability signals for known PHP frameworks and CMS.
- Developed unit tests for the PHP language analyzer and its components.
- Included sample composer.lock and expected output for testing.
- Updated project files for the new PHP analyzer library and tests.

src/Findings/StellaOps.Findings.Ledger/Infrastructure/Projection/LedgerProjectionWorker.cs

@@ -74,6 +74,10 @@ public sealed class LedgerProjectionWorker : BackgroundService
                 continue;
             }
 
+            var batchStopwatch = Stopwatch.StartNew();
+            var batchTenant = batch[0].TenantId;
+            var batchFailed = false;
+
             foreach (var record in batch)
             {
                 using var scope = _logger.BeginScope(new Dictionary<string, object?>
@@ -86,6 +90,19 @@ public sealed class LedgerProjectionWorker : BackgroundService
                 });
                 using var activity = LedgerTelemetry.StartProjectionApply(record);
                 var applyStopwatch = Stopwatch.StartNew();
+                if (!LedgerEventConstants.IsFindingEvent(record.EventType))
+                {
+                    checkpoint = checkpoint with
+                    {
+                        LastRecordedAt = record.RecordedAt,
+                        LastEventId = record.EventId,
+                        UpdatedAt = _timeProvider.GetUtcNow()
+                    };
+
+                    await _repository.SaveCheckpointAsync(checkpoint, stoppingToken).ConfigureAwait(false);
+                    _logger.LogInformation("Skipped non-finding ledger event {EventId} type {EventType} during projection.", record.EventId, record.EventType);
+                    continue;
+                }
                 string? evaluationStatus = null;
 
                 try
@@ -131,10 +148,17 @@ public sealed class LedgerProjectionWorker : BackgroundService
                 {
                     LedgerTelemetry.MarkError(activity, "projection_failed");
                     _logger.LogError(ex, "Failed to project ledger event {EventId} for tenant {TenantId}.", record.EventId, record.TenantId);
+                    batchFailed = true;
                     await DelayAsync(stoppingToken).ConfigureAwait(false);
                     break;
                 }
             }
+
+            batchStopwatch.Stop();
+            if (!batchFailed)
+            {
+                LedgerMetrics.RecordProjectionRebuild(batchStopwatch.Elapsed, batchTenant, "replay");
+            }
         }
     }