Add unit tests and logging infrastructure for InMemory and RabbitMQ transports

- Implemented RecordingLogger and RecordingLoggerFactory for capturing log entries in tests.
- Added unit tests for InMemoryChannel, covering constructor behavior, property assignments, channel communication, and disposal.
- Created InMemoryTransportOptionsTests to validate default values and customizable options for InMemory transport.
- Developed RabbitMqFrameProtocolTests to ensure correct parsing and property creation for RabbitMQ frames.
- Added RabbitMqTransportOptionsTests to verify default settings and customization options for RabbitMQ transport.
- Updated project files for testing libraries and dependencies.

docs/implplan/BLOCKED_DEPENDENCY_TREE.md

@@ -503,6 +503,7 @@ The following JSON Schema specifications have been created in `docs/schemas/`:
 | `scanner-surface.schema.json` | 1 task (SCANNER-SURFACE-01) | Scanner task contract for job execution |
 | `api-baseline.schema.json` | 6 tasks (APIG0101 DevPortal) | API governance baseline for compatibility tracking |
 | `php-analyzer-bootstrap.schema.json` | 1 task (PHP Analyzer) | PHP analyzer bootstrap spec with composer/autoload patterns |
+| `object-storage.schema.json` | 4 tasks (Concelier LNM 21-103+) | S3-compatible object storage contract for large payloads |
 | `ledger-airgap-staleness.schema.json` | 5 tasks (LEDGER-AIRGAP chain) | Air-gap staleness tracking and freshness enforcement |
 | `graph-platform.schema.json` | 2 tasks (CAGR0101 Bench) | Graph platform contract for benchmarks |
 
@@ -782,7 +783,7 @@ LEDGER-AIRGAP-56-002 staleness spec + AirGap time anchors
 | VEX-30-001 | Unspecified | Console/BE-Base Guild |
 | VULN-29-001 | Unspecified | Console/BE-Base Guild |
 | WEB-RISK-66-001 | npm ci hangs; Angular tests broken | BE-Base/Policy Guild |
-| CONCELIER-LNM-21-003 | Requires #8 heuristics | Concelier Core Guild |
+| ~~CONCELIER-LNM-21-003~~ | ~~Requires #8 heuristics~~ ✅ DONE (2025-11-22) | Concelier Core Guild |
 
 ---