refactor(redis, discovery, cache): streamline configuration defaults, logging, and error handling

- Remove default values for `RedisConfig` constructor to enforce explicit configuration.
- Enhance `FileStreamProcessor` logging by adding `LogContext` with exception details.
- Replace `humanReadable` method call with `toHumanReadable` in `DiscoveryCompletedEvent`.
- Remove redundant error trace logging in `CacheInitializer` for cleaner fallback handling.

src/Framework/Discovery/Events/DiscoveryCompletedEvent.php

@@ -20,15 +20,14 @@ final readonly class DiscoveryCompletedEvent
         public ?ScannerMetrics $metrics,
         public ScanType $scanType,
         public Timestamp $timestamp
-    ) {
-    }
+    ) {}
 
     public function toArray(): array
     {
         return [
             'files_scanned' => $this->filesScanned,
             'duration_seconds' => $this->duration->toSeconds(),
-            'duration_human' => $this->duration->humanReadable(),
+            'duration_human' => $this->duration->toHumanReadable(),
             'metrics' => $this->metrics?->toArray(),
             'scan_type' => $this->scanType->value,
             'timestamp' => $this->timestamp->toFloat(),

src/Framework/Discovery/Processing/FileStreamProcessor.php

@@ -11,6 +11,7 @@ use App\Framework\Filesystem\ValueObjects\FilePath;
 use App\Framework\Filesystem\FileScanner;
 use App\Framework\Filesystem\ValueObjects\FilePattern;
 use App\Framework\Logging\Logger;
+use App\Framework\Logging\ValueObjects\LogContext;
 use Generator;
 
 /**
@@ -68,7 +69,8 @@ final readonly class FileStreamProcessor
                 } catch (\Throwable $e) {
                     // Only log errors, not every processed file
                     $this->logger?->warning(
-                        "Failed to process file {$file->getPath()->toString()}: {$e->getMessage()} in FileStreamProcessor"
+                        "Failed to process file {$file->getPath()->toString()}: {$e->getMessage()} in FileStreamProcessor",
+                        LogContext::withException($e)
                     );
                 } finally {
                     // Always cleanup after processing a file