Fix a stuck pending EVM transaction - find the blocked nonce, speed up or cancel with a same-nonce higher-fee replacement, and clear wallet nonce drift

Squash and tidy Git history - non-interactive rebase -i squash, reset --soft, fixup, cherry-pick -x and --abort, force-with-lease rules

Git forensics - blame a line, log --follow across renames, -S and -G pickaxe search, log -L, diff-filter, shortlog stdin hang

Fix .gitignore not working - git rm --cached for tracked files, check-ignore -v, negation inside ignored dirs, secrets remain in history

Resolve Git merge and rebase conflicts - markers, checkout --theirs, abort, continue, ours/theirs swap in rebase

Fix git push rejected for files over 100 MB - find big blobs, filter-repo history rewrite, Git LFS migrate, size guards, secret rotation

Find the breaking commit with git bisect - good/bad marking, git bisect run, exit code 125 skip, first-parent, reset, bug report evidence

Recover lost Git commits, deleted branches and force-pushed history with reflog and fsck

Find files and act on them safely - find -print0 | xargs -0, -exec + vs ;, -delete ordering, name filters, grep -F/-E/-P choices

Go module info - latest version, publish time, source repository, tagged version count and go get command from proxy.golang.org

Parse JSON from LLM output - fenced blocks, prose, trailing commas, single quotes, truncation; raw_decode extractor and validate-then-retry

Undo Git mistakes - reflog after reset --hard, soft reset, revert pushed commits, restore, recover deleted branches

Decode FastAPI 422 errors - loc/type payloads for body, query, header, HTTPException 401/404, async def time.sleep blocking measured

Use HTTP conditional requests - ETag and If-None-Match returning 304 with empty body, Last-Modified, Cache-Control max-age, If-Match 412

GNU date recipes - epoch conversion, +1 month overflow from Jan 31, TZ= prefix, rejected zone names and DST gap, day differences

Debug JWT validation failures - invalid signature, expired tokens and clock skew, aud and iss checks, JWKS key rotation and secure verifier rules

HTTP gzip behavior - Content-Length is the compressed size, requests decodes automatically, raw bytes with decode_content=False, Vary header

JavaScript gotchas run live - default sort as text, map(parseInt), == coercion, Date parsing UTC vs local, NaN includes, var closures

Fix stale content behind a CDN - read Age and cache-status headers, Cache-Control per file type, hashed filenames, targeted purge, Vary traps

JavaScript regex cookbook - matchAll named groups, /g lastIndex statefulness, replaceAll TypeError, lookbehind, u flag emoji and unicode classes, ReDoS