# BIM IFC Explorer tree entries

Batch: bb9c4d9ef93ef33f4b01b4d6

Updated the existing native IFC Explorer result serializer in
`BIMSelectedWorkflow.h` to emit each IFC entity ID once per tree response.
The desktop `BimIfcExplorer.py` addEntity method tracks displayed IDs in
`self.done`; the Web serializer previously emitted repeated references.
The response schema and existing command route are unchanged.

The four-command batch remains incomplete. This edit addresses only tree
serialization. Full IFC Elements and IFC Properties desktop parity, Explorer
actions beyond the inspected read/insert path, and the reported registration
discovery discrepancy remain unresolved. Supplied packet anchors already show
command-specific registrations; no marker registrations were added.

No tests, builds, browser validation, benchmarks, or acceptance runs were
performed. Incremental build, sync, and route receipts belong to the outer
pipeline. The four permitted supplemental source windows were used to inspect
Glue and Explorer native and desktop behavior.