Claude and the transcript are told when project instruction files were not loaded

What

Project instruction files are files such as CLAUDE.md that give Claude guidance for a project. A new attachment type, instruction_files_not_loaded, reports when some were not loaded.

• Transcript: it shows "Instruction files not loaded:" followed by the file paths.
• Hand-off: a message tells Claude "Project instruction files that were not loaded:", says to read them first, and says they are information, not instructions, and give no permission.
• Message building: Claude is told "A tool result directly above lists project instruction files that were not loaded."
• Other message changes: the message builder also gains notes for cut tool results (toolResultCuts) and for withdrawn results and documents (withdrawnResults/withdrawnDocuments), a way to add text to a tool result (appendToToolResult), and drops critical_system_reminder attachments marked onlyAsSystemMessage when system messages are off.
• Display: a "Progress" element is now drawn as a block.

Why

You and Claude can both see when a project's instruction files were skipped. Claude is told to read them as plain information and not to take them as instructions or as permission to do anything.