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Sweep 30 Oct 2026 · 01:02Z Build v2.1.314 532 read Stable v2.1.308 Latest v2.1.314 Next v2.1.314 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.314 ·

ARCHITECTURE.md is now treated as an instruction file

ARCHITECTURE.md is now handled like CLAUDE.md as an instruction file, and project root detection accepts a wider list of file names

Group of 2 You'll notice Improvements
JSON All of v2.1.314
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MemoryArea: what it touches
ImprovementsKind: in v2.1.314,
ImprovementsSection of the release

Unclear What Claude Code does with files on this list, such as reading them as instructions or protecting them from edits, is not stated.

What

Instruction files are files such as CLAUDE.md that hold standing instructions for Claude. Claude Code now treats ARCHITECTURE.md as one of them.

  • architecture.md is now in the same name list as claude.md, claude.local.md and project-instructions.md, and a second name check also matches it.
  • The instruction-file check classifies ARCHITECTURE.md as an instruction_file. The match ignores upper and lower case and strips trailing dots, spaces and : suffixes.
  • Detecting the root folder of a project now also accepts any name from a new list, not only CLAUDE.md and CLAUDE.local.md.

Why

Edits to ARCHITECTURE.md may now be guarded the same way as edits to other instruction files, so you may see extra permission prompts when Claude changes it. A folder may also be recognised as a project root in more cases than before.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat Claude Code does with files on this list, such as reading them as instructions or protecting them from edits, is not stated.

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