File Context Error: Cannot Edit Previously Mentioned File

Bug Description
When trying to edit a file that is included in Claude's context via an @ mention, Claude is given an "Error: File has not been read yet. Read it first before writing to it." error, even if the file has not changed since being added to Claude's context via @ mention and Claude's understanding of the content is therefore accurate.

Environment Info

• Platform: darwin
• Terminal: WarpTerminal
• Version: 1.0.57
• Feedback ID: 9dfc2260-b02e-4c1e-8943-4d6e561220e8

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:882:11)\n    at execSync (node:child_process:954:15)\n    at D7 (file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:841:5854)\n    at file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:753:48942\n    at Q (file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:653:14408)\n    at $W (file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:753:46653)\n    at rK (file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:753:45519)\n    at dB (file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:753:51568)","timestamp":"2025-07-22T08:23:19.534Z"},{"error":"Error: ENOENT: no such file or directory, open '/proc/version'\n    at Module.readFileSync (node:fs:442:20)\n    at Object.readFileSync (file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:659:7096)\n    at file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:659:8658\n    at Q (file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:653:14408)\n    at __4 (file:///Users/christo/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:753:63371)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-07-22T08:23:20.008Z"}]