agent-platform release v4.69.2

Removed

• The portal’s app-config carries no agentPlatform.modelManager block (giantswarm/agent-platform#318). The Models pages call model-manager’s x_model-manager_* tools through muster as the signed-in person (giantswarm/backstage#2294, Backstage 2.19.0 on), so the REST apiBaseUrl the chart rendered with model-manager’s route on was read by nothing. verify-wiring asserts it stays out; the muster.installations entry and the model-manager route are unchanged.