Revision Tag & Drop Bukkit Event Bus Pattern

[raphael-goetz]

Resolves: #60 & #61

[Copilot]

Pull request overview

This PR implements two changes: removing the Bukkit event bus pattern from the Listen stream and adding revision preservation capability to Objects. The Listen stream is simplified by removing the callback/acknowledgement mechanism and the priority-based registration system. A new preserve_previous_entry boolean field is added to the Object message to enable revision tracking.

• Simplified Listen RPC by removing the event callback/acknowledgement pattern and ListenRegister message
• Added preserve_previous_entry field to Object message for revision management
• Updated service documentation to reflect the simplified Listen workflow

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
proto/v1/api.proto	Added preserve_previous_entry field to Object; simplified ListenMessage from oneof to repeated string key_pattern; removed ListenRegister message; updated service documentation
sdk/go/v1/api.pb.go	Generated Go code reflecting proto changes - new field, simplified ListenMessage structure, removed ListenRegister type and related code
sdk/go/v1/api_grpc.pb.go	Updated gRPC service interface comments to reflect simplified Listen workflow without callback pattern
sdk/openapi/octopus.swagger.json	Removed obsolete schema definitions (protobufNullValue, v1Entry, v1EventCall, v1GetResponse, v1ListenRegister, v1Object, v1PageInfo, v1Paginator)

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