[WIP] ML model controls w/ Logos & Progress

[ax3l]

synapse_dl_progress.webm

Summary

This updates the dashboard model controls with model/vendor branding, MLflow download feedback, and safer handling for missing registered models.

Key changes:

• Show the Genesis logo for Neural Network (single) in the model type dropdown.
• Show the AmSC logo next to the model type selector.
• Use the Genesis logo as the app favicon.
• Show NN download status/progress while loading from AmSC MLflow.
• Keep missing MLflow models from leaving stale errors, stale links, or stale plotted
  model traces.
• Make the AmSC logo link to the selected model’s MLflow page only when that model is
  available.

Review Guide

Recommended review order:

1. model_manager.py

   • New logo constants and MLflow model URL expression.
   • New helpers:
     • clear_model_load_errors
     • is_missing_mlflow_model
     • load_model_from_mlflow
   • ModelManager(..., loaded_model=...) support.
   • Model panel layout and conditional AmSC link.

2. app.py

   • update_plot_figure() uses a stable Plotly state key to avoid stale model traces.
   • NN model download wrapper with progress reporting.
   • Async reset() path and guarded state-change handling.
   • Genesis favicon assignment.

3. state_manager.py

   • New model download/availability state.

4. logos/

   • Adds only the two assets used by the UI.

Non-Obvious Details

• MLflow artifact progress is mirrored by temporarily wrapping ArtifactProgressBar in
  the relevant MLflow modules. The original classes are restored in finally.
• The Plotly figure is replaced through a stable state key because figure.update()
  could retain stale ML model traces when switching between available and missing models.
• Missing registered models are treated as “model unavailable” rather than fatal UI
  errors.

Manual Test Plan that was Performed

• Start the app and confirm the Genesis favicon is shown.
• Confirm Neural Network (single) has the Genesis logo in the dropdown.
• Confirm the AmSC logo appears beside the model type selector.
• Select a valid NN model:
  • download status says Downloading from American Science Cloud...
  • progress bar updates
  • AmSC logo opens the selected model page in a new tab
  • ML model line appears in the plot
• Select a missing model, e.g. missing GP:
  • app does not hard-fail
  • stale error is cleared when switching back to a valid model
  • AmSC logo is not clickable
  • previous ML model line disappears
• Switch valid -> invalid -> valid repeatedly:
  • plot and AmSC link match the current selection every time

[ax3l]

Thinning out a bit, moved to #434