Add verified materials plots and dense heatmaps

[hang-jin]

What changed

• add editable Origin workflows for DSC, NMR, FTIR and multi-spectrum XPS comparison
• expand PL and UV-Vis multi-series semantics and examples
• add dense 30×30 / 40×40+ heatmap layout with sparse labels and a detached colorbar
• improve bounded Origin 2021–2026 Automation diagnostics without registry/DCOM changes
• publish eight real-Origin verified gallery examples and expand the public gallery to 44 cases / 38 reusable routes
• refresh runtime and asset provenance manifests, bilingual README guidance, contracts and tests

Why

Materials-science users need common spectroscopy and thermal-analysis routes that understand useful data columns, preserve source files, and remain editable in Origin. Dense matrices also need a layout that stays readable beyond the former small demonstration grid.

Validation

• 523 passed, 1 skipped
• strict public release gate passed: 602 tracked files / 8,374,920 bytes audited
• staged diff check passed; no private planning or showcase-builder files included
• real Origin 2024b verification completed for XPS comparison, PL, UV-Vis, DSC, NMR, FTIR, 40×40 heatmap and 3D trajectory
• each verified route produced OPJU, PNG, PDF and TIF, passed object readback, and received manual visual review