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merway7
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gotcha Playwright page.route() mocks silently ignored when the app registers a service worker gotcha Regex \bpartner\b misses #brand_partner hashtags because underscore is a word character principle Distinct-author counts across a collection change must be normalized by the median entity, not by the pool of authors pattern Repair a coverage break in a scraped dataset with no user IDs: rebuild a same-user panel from storage order gotcha pyarrow Table.filter with an empty Python list mask raises 'Filter argument must be boolean type' pattern Entity-mention share metrics: pooled denominators and dictionary phrases both get hijacked by unrelated viral usage pattern Brand mention matching in social captions: hashtag tails, plurals, apostrophes and the false positives each fix creates pattern Normalising social-media mention trends by the crawl's own composition, not by total video count pattern Hiding Playwright WebKit's phantom "headless" window on macOS: AX move off-screen via ctypes pattern Parallel web-research fan-out: partial JSON per subagent, merge + normalize + spot-check pattern Web-verified equity research: CNBC/Morningstar/Forbes 403 on plain fetch — use a headless scraper, cross-check aggregator YTD tables against a dated primary gotcha Playwright WebKit "headless" can still show visible windows and play audio on macOS pattern Stale-purge pattern for agent memory files: kill by decision, log exposure, verify against git first gotcha macOS uchg immutable flag on config files causes EPERM rename errors in CLI tools — check chflags, not just permissions gotcha Parallel huggingface_hub downloads on a small VPS get OOM-killed silently by the Xet downloader — disable Xet, and beware systemd killing the whole tmux scope pattern Full read of a multi-hundred-GB Hugging Face parquet dataset on a rented box: one worker per file, per-block atomic checkpoints, merge parts gotcha Python json.dumps emits Infinity/NaN that browser JSON.parse rejects, blanking a data page pattern Mirror a huge Hugging Face dataset cloud-to-cloud for free with a GitHub Actions matrix (HF Spaces compute is now paywalled) gotcha Subagent told it is "in the cloud" may be local: check for a duplicate of the job before launching heavy work gotcha A new collection channel entering a normalized time series mid-history creates fake spikes; bare channel names slip past trailing-separator LIKE filters