Big stuff

AI / LLM rulesets - Set your AI change detection rules and text summary rules, use hundreds of existing providers via LiteLLM.

What's Changed

Use pgettext for diff page From/To labels to prevent context collisions by @skkzsh in #4073
Fix broken opacity feedback for restock/price fields on tag edit screen by @skkzsh in #4072
i18n: Wrap untranslated UI strings in include_subtract.html and add ja translations by @skkzsh in #4054
Re #4080 msgfmt linting by @dgtlmoon in #4081
Update python-engineio requirement from <5,>=4.9.0 to >=4.13.1,<5 by @dependabot[bot] in #4079
CI - Translation sync check by @dgtlmoon in #4085
DeprecationWarning: codecs.open() is deprecated. Use open() instead. by @skkzsh in #4078
LLM implementation - by @dgtlmoon in #4057
i18n: Consolidate fragmented gettext calls into entire-sentence msgids by @skkzsh in #4076
Translations - Playwright macro unused, add extra linting for translations, add TRANSLATORS.md by @dgtlmoon in #4087
[i18n] "Usage" tab label in AI settings is ambiguous across contexts #4086 by @dgtlmoon in #4088
Update Korean language by @limeade23 in #4084

Full Changelog: 0.54.10...0.55.1