fix(JS-2): remove duplicate GraphRenderer._currentSimulation assignment in graph.js

fix(M-10,M-11,L-06): deterministic node ID fallback; container-scoped SVG marker; store simulation for tab-switch cleanup

fix(M-10,M-11,L-06): deterministic fallback node IDs; container-scoped SVG marker IDs; stop D3 simulation on tab switch

fix(BUG-2,BUG-3,BUG-26,H-07): store _zoomBehavior; add resetZoom() named fn; fix .on('click') closing paren; expand NODE_COLORS/ICONS to 22 types

fix(encoding): strip non-ASCII chars from all modified files

fix(frontend): BUG-18 -- graph container width=0 on tab switch

feat(ai):complete — evidence connection map and deep investigation

feat(frontend): patriotic HTML/CSS/JS dashboard with component architecture