Add unit tests for Router configuration and transport layers

- Implemented tests for RouterConfig, RoutingOptions, StaticInstanceConfig, and RouterConfigOptions to ensure default values are set correctly.
- Added tests for RouterConfigProvider to validate configurations and ensure defaults are returned when no file is specified.
- Created tests for ConfigValidationResult to check success and error scenarios.
- Developed tests for ServiceCollectionExtensions to verify service registration for RouterConfig.
- Introduced UdpTransportTests to validate serialization, connection, request-response, and error handling in UDP transport.
- Added scripts for signing authority gaps and hashing DevPortal SDK snippets.

docs/router/SPRINT_7000_0005_0004_streaming.md

@@ -30,29 +30,29 @@ Implement streaming request/response support. Large payloads stream through the
 
 | # | Task ID | Status | Description | Working Directory |
 |---|---------|--------|-------------|-------------------|
-| 1 | STR-001 | TODO | Add SupportsStreaming flag to EndpointDescriptor | Common |
-| 2 | STR-002 | TODO | Add streaming attribute support to [StellaEndpoint] | Common |
-| 3 | STR-010 | TODO | Implement REQUEST_STREAM_DATA frame handling in transport | InMemory |
-| 4 | STR-011 | TODO | Implement RESPONSE_STREAM_DATA frame handling in transport | InMemory |
-| 5 | STR-012 | TODO | Implement end-of-stream signaling | InMemory |
-| 6 | STR-020 | TODO | Implement streaming request dispatch in gateway | Gateway |
-| 7 | STR-021 | TODO | Pipe HTTP body stream → REQUEST_STREAM_DATA frames | Gateway |
-| 8 | STR-022 | TODO | Implement chunking for stream data | Configurable chunk size |
-| 9 | STR-023 | TODO | Honor cancellation during streaming | Gateway |
-| 10 | STR-030 | TODO | Implement streaming response handling in gateway | Gateway |
-| 11 | STR-031 | TODO | Pipe RESPONSE_STREAM_DATA frames → HTTP response | Gateway |
-| 12 | STR-032 | TODO | Set chunked transfer encoding | Gateway |
-| 13 | STR-040 | TODO | Implement streaming body in RawRequestContext | Microservice |
-| 14 | STR-041 | TODO | Expose Body as async-readable stream | Microservice |
-| 15 | STR-042 | TODO | Implement backpressure (slow consumer) | Microservice |
-| 16 | STR-050 | TODO | Implement streaming response writing | Microservice |
-| 17 | STR-051 | TODO | Expose WriteBodyAsync for streaming output | Microservice |
-| 18 | STR-052 | TODO | Chunk output into RESPONSE_STREAM_DATA frames | Microservice |
-| 19 | STR-060 | TODO | Implement IRawStellaEndpoint streaming pattern | Microservice |
-| 20 | STR-061 | TODO | Document streaming handler guidelines | Docs |
-| 21 | STR-070 | TODO | Write integration tests for upload streaming | |
-| 22 | STR-071 | TODO | Write integration tests for download streaming | |
-| 23 | STR-072 | TODO | Write tests for cancellation during streaming | |
+| 1 | STR-001 | DONE | Add SupportsStreaming flag to EndpointDescriptor | Common |
+| 2 | STR-002 | DONE | Add streaming attribute support to [StellaEndpoint] | Common |
+| 3 | STR-010 | DONE | Implement REQUEST_STREAM_DATA frame handling in transport | InMemory |
+| 4 | STR-011 | DONE | Implement RESPONSE_STREAM_DATA frame handling in transport | InMemory |
+| 5 | STR-012 | DONE | Implement end-of-stream signaling | InMemory |
+| 6 | STR-020 | DONE | Implement streaming request dispatch in gateway | Gateway |
+| 7 | STR-021 | DONE | Pipe HTTP body stream → REQUEST_STREAM_DATA frames | Gateway |
+| 8 | STR-022 | DONE | Implement chunking for stream data | Configurable chunk size |
+| 9 | STR-023 | DONE | Honor cancellation during streaming | Gateway |
+| 10 | STR-030 | DONE | Implement streaming response handling in gateway | Gateway |
+| 11 | STR-031 | DONE | Pipe RESPONSE_STREAM_DATA frames → HTTP response | Gateway |
+| 12 | STR-032 | DONE | Set chunked transfer encoding | Gateway |
+| 13 | STR-040 | DONE | Implement streaming body in RawRequestContext | Microservice |
+| 14 | STR-041 | DONE | Expose Body as async-readable stream | Microservice |
+| 15 | STR-042 | DONE | Implement backpressure (slow consumer) | Microservice |
+| 16 | STR-050 | DONE | Implement streaming response writing | Microservice |
+| 17 | STR-051 | DONE | Expose WriteBodyAsync for streaming output | Microservice |
+| 18 | STR-052 | DONE | Chunk output into RESPONSE_STREAM_DATA frames | Microservice |
+| 19 | STR-060 | DONE | Implement IRawStellaEndpoint streaming pattern | Microservice |
+| 20 | STR-061 | DONE | Document streaming handler guidelines | Docs |
+| 21 | STR-070 | DONE | Write integration tests for upload streaming | |
+| 22 | STR-071 | DONE | Write integration tests for download streaming | |
+| 23 | STR-072 | DONE | Write tests for cancellation during streaming | |
 
 ## Streaming Frame Protocol
 
@@ -191,20 +191,20 @@ public sealed class StreamingOptions
 ## Exit Criteria
 
 Before marking this sprint DONE:
-1. [ ] REQUEST_STREAM_DATA frames implemented in transport
-2. [ ] RESPONSE_STREAM_DATA frames implemented in transport
-3. [ ] Gateway streams request body to microservice
-4. [ ] Gateway streams response body to HTTP client
-5. [ ] SDK exposes streaming Body in RawRequestContext
-6. [ ] SDK can write streaming response
-7. [ ] Cancellation works during streaming
-8. [ ] Integration tests for upload and download streaming
+1. [x] REQUEST_STREAM_DATA frames implemented in transport
+2. [x] RESPONSE_STREAM_DATA frames implemented in transport
+3. [x] Gateway streams request body to microservice
+4. [x] Gateway streams response body to HTTP client
+5. [x] SDK exposes streaming Body in RawRequestContext
+6. [x] SDK can write streaming response
+7. [x] Cancellation works during streaming
+8. [x] Integration tests for upload and download streaming
 
 ## Execution Log
 
 | Date (UTC) | Update | Owner |
 |------------|--------|-------|
-| | | |
+| 2025-12-05 | Sprint DONE - StreamDataPayload, StreamingOptions, StreamingRequestBodyStream, StreamingResponseBodyStream, DispatchStreamingAsync in gateway, 80 tests pass | Claude |
 
 ## Decisions & Risks