Fix missing decklist colors and stale-page refresh on a static site
Session from merchantscroll-traces on Hugging Face by vedalken · MIT · condensed by Coders Talk
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1msession
0interventions
GOAL
Add free visitor analytics to a GitHub Pages site, then track down why newly crawled decklists were rendering with grey (missing) color dots and fix the pipeline, plus polish mobile layout and page freshness.
- +0Prompt · +0How can I monitor visitors on my site, for free, running on GitHub Pages?
- +0mAgent did · +0mRecommended GoatCounter and added the tracking script tag before </body> in index.html using the user's site code.
- +0mPrompt · +0mNew decklists show a grey dot instead of their color — fix it in the pipeline where data is saved, not manually.
- +0mAgent did · +0mTraced the crawler pipeline, frontend color rendering and CI workflow; found entrypoint.py (used by CI) called crawl_decks() without a color_lookup, so colors were never enriched. Patched entrypoint.py to build and pass the Scryfall color lookup.
- +0mFail · +0mRan the backfill script (enrich_colors.py) as asked and it crashed with a KeyError — some tournament files had no 'decklists' key.
- +0mAgent did · +0mFixed the crash in utils.py by guarding the missing key, reran the backfill: 652 tournament files and 15,956 decklists ended up with colors, zero missing.
- +0mPrompt · +0mShared a screenshot from a Realme 10 phone showing overlapping deck columns — can this be fixed?
- +0mAgent did · +0mFound the mobile media query still laid Main Deck and Sideboard side by side; changed .decklist-columns to stack vertically under 640px width, fixing the overlap.
- +0mPrompt · +0mReopening the site shows a stale cached decklist since scrolling is locked for navigation — add pageshow refresh and a floating banner for new data, no visible button.
- +1mOutcome · +1mAdded a pageshow handler to force a fresh load on bfcache restore, plus a visibilitychange check that shows a floating 'new decklists available' banner comparing deck counts, without adding a permanent UI button.
VERDICT
Next time I'd open straight with 'fix where colors are assigned in the CI pipeline, not just the local script' — that's what saved a round trip, since the bug was in the CI-only entrypoint.py, not the newer pipeline.py I'd have guessed first. Making the agent actually run the backfill itself (uv run examples/enrich_colors.py) and read the output caught a second crash (missing 'decklists' key) that a silent success would have hidden.