Merge dev: KDD '26 paper citation and levelled logging

Merge: cite the KDD '26 paper on About and Backtesting Archive

Cite the KDD '26 paper instead of the arXiv preprint on About and Backtesting Archive

Merge: timestamped, levelled logging and quieter API routes

Log with UTC timestamps and levels, and stop printing per-request debug output

Merge dev: remove the Models tab

Merge: remove the Models tab

Remove the Models tab and its hand-maintained model descriptions

Merge dev: error boundaries with server-side client-error reporting

Merge: error boundaries with server-side client-error reporting

Show a proper error page instead of a blank application error, and log client-side faults

Merge dev: console entry points, add-model round lifecycle, API error handling

Fail loudly on non-OK API responses instead of crashing the page

add-model: explain the full round lifecycle from submission to leaderboard

Merge: console entry points in nav, footer and add-model

Link the user console from the nav, footer and add-model page

Merge dev: mobile optimization for plots, tables and navigation; fewer leaderboard requests

Merge fix: collapse leaderboard ranking requests

Load leaderboard rankings in three requests instead of one per challenge

merge mobile follow-up fixes: tablet nav, series names, period popover (frontend #39)

fix mobile nav overflow at tablet widths, clipped series names and period popover

merge mobile optimization: responsive plots, tables, nav and lighter plotly bundle (frontend #39)

load only the basic plotly bundle

wrap model and series accordion headers on small screens

make hover tooltips tap-accessible; 16px inputs on mobile

Make model detail charts readable on phone-sized screens

render ranking tables as cards on small screens; sticky leaderboard column

responsive plot layout with tap-friendly HTML legend on mobile

add mobile burger menu to header nav

responsive container padding; stop hiding horizontal overflow

merge dev: privacy policy page and page-view analytics (frontend #38)

merge tracker domain allowlist for prod

count page views on the public site only

merge privacy policy wording fixes

simplify privacy policy wording on IP handling, location and participation data

add privacy policy page in German and English, linked from the footer

point page-view tracking at the new analytics host

add self-hosted Umami page-view tracking

add self-hosted Umami page-view tracking

Merge dev: /news section (frontend #31)

merge: ignore content repo doc files (frontend #31)

ignore repo doc files when loading news posts

make standalone output opt-in so nixpacks and docker builds both work

make standalone output opt-in so nixpacks and docker builds both work

merge: draft posts + private content repo docs (frontend #31)

skip posts marked draft: true

fetch news content in prebuild script instead of the Dockerfile

merge: /news section (frontend #31)

add /news section fed by an external content repo

Merge origin/main into dev: reconcile 9 stray develop/main-only commits (ts-arena-13)