feat: add track kinematics panel with config-driven columns

[rx18-eng]

Closes #844

Summary

• Adds a track kinematics panel (sortable table showing pT, η, φ, charge, and |p| for all tracks in the event) - Config-driven architecture via KinematicsConfig so experiments define their own columns, units, and data extraction without modifying panel code
• Includes ATLAS default config (ATLAS_KINEMATICS) with MeV→GeV conversion,charge from dparams[4]

Why this matters for students

In masterclass exercises, students need to identify particles by inspecting track properties (high-pT tracks are Z/W decay products, charge determines) particle/antiparticle, and η tells you where in the detector the track goes.Currently students have to click individual tracks in 3D to see properties one at a time. This panel gives them the full picture at a glance with sorting and filtering so they can quickly spot the interesting tracks, similar to what
tools like HYPATIA provide.

Features

• Column sorting (click header), default pT descending — highest-energy tracks first
• pT threshold filter to cut low-momentum background
• Collection dropdown for multiple track collections
• Charge-colored index numbers and q values (red +, blue −)
• TSV export for students to use data in their analysis
• Keyboard navigation (arrow keys, enter to look at track)
• Physics tooltips on column headers explaining what each quantity means
• Auto-refreshes on event change

Adding kinematics for another experiment

const LHCb_KINEMATICS: KinematicsConfig = {                                   
   title: 'Track Momenta',
   columns: [
     { id: 'p', label: '|p|', unit: 'GeV', getter: (t) => t.momentum / 1000 },
     { id: 'charge', label: 'q', getter: (t) => t.charge ?? 0 },                   
     ],
 };                                                                            
       

Recording.2026-03-25.161646.mp4

[rx18-eng]

@EdwardMoyse @sponce , please let me know your thoughts on this !