[Domain] expand route guidance placement and activation

[95x8x9]

Summary

• allow route guidance to be installed inside room space as well as on doors/exits, with clearance checks against walls and non-walkable space
• persist and render installed guidance positions, and show multiple active guidances consistently in authoring/runtime UI
• prioritize agents near installed guidance anchors for faster re-evaluation instead of relying only on the global round-robin budget
• add regression coverage for room-installed guidance, multiple simultaneous guidances, and near-anchor prioritization

Related Issue

• closes Task-Expand route guidance placement and activation behavior #252

Area

• Engine
• Domain
• Application
• Docs
• Build
• Analysis
• Chore

Architecture Check

• I kept the dependency direction application -> domain -> engine.
• I did not add Qt UI code to src/domain.
• I did not add domain or application dependencies to src/engine.
• I used src/ as the include root.

Verification

• cmake --preset windows-debug
• cmake --build --preset build-debug
• ctest --preset test-debug
• Not run (reason below)

Risks / Follow-up

• default guidance compliance/visibility parameters are still conservative, so scenario tuning may still be needed for stronger in-sim response
• if room-installed guidance should influence a wider area than the current near-anchor visibility rule, we should follow up by revisiting the activation radius and zone constraints