Add archetype metagame timeline view to Pauper deck tracker
Session from merchantscroll-traces on Hugging Face by vedalken · MIT · condensed by Coders Talk
Build a visualization showing archetype presence percentages per tournament, per day, and across timespans, integrated into an existing static frontend for tracking Pauper MTGO decks.
- +0Prompt · +0Want a visualization of archetype presence % per deck, per tournament, per day, and per timespan. Let's discuss implementation and placement first.
- +0mAgent did · +0mExplored the codebase (data scale, frontend patterns, existing modals), then discussed placement/scope options with the user via clarifying questions before writing a formal implementation plan for a new metagame overlay modal.
- +0mPrompt · +0mImplement the plan as specified (do not edit the plan file, mark to-dos in_progress, don't stop until done).
- +0mAgent did · +0mBuilt src/meta_stats.py to generate a precomputed timeline.json artifact (851 events, 20,707 decks, 173KB/24KB gzipped), hooked it into the pipeline, added 10 backend tests, built the frontend modal with SVG chart and scope controls, fixed z-index/layout bugs found via Playwright screenshots, and updated docs.
- +1mFail · +1mFull derived-artifact rebuild rewrote 839 unrelated profile files due to pre-existing non-deterministic sort order in glob-based file iteration.
- +1mPrompt · +1mImplement the plan as specified. yes fix the bug.
- +1mAgent did · +1mSorted glob results and fixed tie-breaking (adding site_name/player as secondary sort keys) across deck_stats.py, player_stats.py, pipeline.py, and build_index.py; added determinism tests; verified 3,191 artifacts became byte-identical across rebuilds with no semantic changes.
- +2mPrompt · +2mReview the code
- +2mFail · +2mBugbot review found the determinism fix's reverse=True tie-break sorted site_name descending, causing legitimate challenge results to be dropped from recent_entries in favor of league 5-0s.
- +2mAgent did · +2mFixed the tie-break direction across all three modules, added a regression test pinning challenge-over-league priority, and verified no ranked entries were incorrectly dropped anywhere in the dataset.
- +2mPrompt · +2mSo I can deploy?
- +2mOutcome · +2mDiscovered the feature was already live on origin/main; found and fixed a stale-CSS service worker cache-version bug, then verified the live production site directly: 30-day scope shows 2,197 decks across 75 events and 60 archetypes, with row/Other accounting closing exactly (1,509 + 688 = 2,197).
Next time I'd ask upfront whether the data pipeline's file iteration order was already deterministic, since that pre-existing bug cost a whole extra round of investigation and fixes. Running Bugbot after the determinism fix was the correction that actually mattered — it caught a real regression (challenge results getting dropped in favor of league 5-0s) that my own verification scripts had missed. I also liked that the agent didn't just trust 'tests pass' but went and checked the live production site directly, which is how we found the stale service-worker cache and the subpath/PWA issues.