Initial commit: grid-based multi-photon reconstruction

Code, configs, charge LUTs, best.pth and evaluation records for each
training run, the knife-edge / Siemens-star / XRF notebooks with
outputs, and the overnight run reports. Epoch checkpoints, inference
results and HTML exports stay local (see .gitignore).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,22 @@
+__pycache__/
+*.pyc
+*.h5
+*.pdf
+# symlink to /mnt/sls_det_storage/.../InferenceResults (~19 GB)
+InferenceResults
+
+# Notebooks: current versions with outputs; dated backups stay local
+Notebooks/Backup_*/
+
+# Results: per run keep config, summaries, history, plots and best.pth;
+# epoch checkpoints and last.pth stay local
+Results/*_smoke_*/
+Results/*/Models/*
+!Results/*/Models/best.pth
+# energy_response.npz (~4.5 MB each) only where notebooks read it
+Results/*/energy_response.npz
+!Results/260919_poly3to30keV_Moench014_c96_00/energy_response.npz
+!Results/260927_poly2to20keV_Moench040_c96_00/energy_response.npz
+# overnight drivers: resume markers, and HTML exports of the tracked notebooks
+Results/overnight_*/state/
+Results/overnight_*/report/*.html