Rjf/wire in gbfs

[robfitzgerald]

this PR revises the stubbed gbfs traversal model as a geofencing model, and adds a similar constraint model with a stubbed geofence testing engine + a unit test. these are wired into the available list of builders in bambam. includes a few architectural diagrams from the gbfs onboarding discussion.

[Copilot]

Pull request overview

This PR refactors the GBFS traversal model into a geofencing constraint model. The changes rename Gbfs references to Geofence, introduce a new frontier constraint model for geofence validation, and add a geofence testing engine with unit tests. Additionally, architectural diagrams documenting the GBFS onboarding discussion are included.

Key changes:

• Renamed GBFS traversal components to Geofence to reflect the geofencing-focused implementation
• Added a new GeofenceConstraintModel frontier model with a stubbed geofence testing engine
• Added unit test for the in_geofence method demonstrating point-in-polygon validation

Reviewed changes

Copilot reviewed 20 out of 22 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
rust/bambam/src/model/builders.rs	Registers the new GeofenceConstraintBuilder and GeofenceTraversalBuilder with the Compass builder inventory
rust/bambam/Cargo.toml	Adds dependency on bambam-gbfs crate
rust/bambam-gbfs/src/model/traversal/mod.rs	Updates module export from gbfs to geofence
rust/bambam-gbfs/src/model/traversal/geofence/*	Renames GBFS traversal components to Geofence variants
rust/bambam-gbfs/src/model/frontier/geofence/*	Implements new geofence constraint model with engine, service, and builder
rust/bambam-gbfs/Cargo.toml	Updates version to 0.2.1 and adds geo dependency
doc/arch/*.d2	Adds architectural diagrams for MEP stack and walk/transit architecture

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