feat: Add multilingual README support#4965

Draft

rosch100 wants to merge 10 commits intohacs:mainfrom

rosch100:feature/multilingual-readme

Commits on Dec 1, 2025

feat: Add multilingual README support
rosch100
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Trigger CI workflows
rosch100
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Add supported_languages field to hacs.json schema and validation
rosch100
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Commits on Dec 2, 2025

Add BCP47 language parsing for multilingual README support
rosch100
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Fix supported_languages validation and runtime consistency
rosch100
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Add supported_languages validator to hacs.json schema
rosch100
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Fix supported_languages validation issues
rosch100
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Add multilingual description support and rename supported_languages to content_languages
rosch100
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Add PR description: Multilingual README and description support
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refactor: Remove multilingual description support
rosch100
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