Support all operation types in diagrams

This issue ticket tracks the remaining operations that have not yet been added to the diagram feature.

• fork option
• trigger / fork trigger
• collect
• spread
• injection
• scope
• cleanup
• trim
• gate open/close
• cancellation filter
• disposal filter
• push into buffer (insert a value into a buffer and then emit a trigger)
• cloning from buffers instead of pulling
• explicit serialize
• explicit try deseserialize

Start by locating the existing diagram feature and reading how the already supported operations—scope, cancellation filter, disposal filter, and buffer cloning—are represented. Then assess each unchecked operation in the list, from fork through explicit try deserialization. Done means the remaining listed operations are supported in diagrams, with their expected behavior established.