This PR should be a complete update to draft-14 syntax including renaming, changes of protocol version, and checking the double requestIDs in SUBSCRIBE_UPDATE.

Compared to #254, the renaming should be more complete. Here is a Claude analysis of the differences:

Both commits implement draft-14 message naming updates, but commit 23906d8 (your fork) has several important additions and fixes compared to commit 31744d4 (upstream):

Key Differences

1. Track Status Message Split ⭐ (Most significant change)

Your commit (23906d8):

• Splits track status into TWO separate messages:
  • TRACK_STATUS (0x0d): Request message with TrackNamespace + TrackName
  • TRACK_STATUS_OK (0x0e): Response message with StatusCode + LargestLocation
• Creates new files: track_status_ok_message.go and corresponding tests
• Deletes: track_status_request_message.go

Upstream commit (31744d4):

• Only has TRACK_STATUS message (doesn't split into request/response)
• Keeps the old structure

This is a breaking protocol change that better aligns with draft-14's request/response pattern.

2. SUBSCRIBE_UPDATE Enhancement ⭐

Your commit (23906d8):

• Adds SubscriptionRequestID field to track the original SUBSCRIBE request
• Generates new RequestID for each UPDATE message
• Updates UpdateSubscription() API to use subscriptionRequestID parameter

Upstream commit (31744d4):

• Only has basic SUBSCRIBE_UPDATE changes
• Doesn't include the SubscriptionRequestID field

3. Bug Fixes

Your commit (23906d8):

• Fixes typo: ObjectForwardingPreferenceDatagarm → ObjectForwardingPreferenceDatagram (object.go:7)
• Fixes typo: PUBLISH_NAMESPACE_DONE message mapping (was UNANNOUNCE)

Upstream commit (31744d4):

• Contains the typo in publish_error_message.go

4. Code Quality Improvements

Your commit:

• Better logging in subscribe_update_message.go (proper uint64 casting for slog)
• More comprehensive test coverage for SUBSCRIBE_UPDATE with SubscriptionRequestID
• Cleaner session.go handler method names (e.g., onPublishNamespace vs onAnnounce)

5. Session Handler Updates

Both commits rename the handler methods from:

• onAnnounce → onPublishNamespace
• onSubscribeAnnounces → onSubscribeNamespace
• etc.

But your commit has more complete implementation in session.go with proper RequestID handling.