Update: Remove character limits from @perstack/base file tools

[FL4TLiN3]

Summary

Remove character limits from file operation tools in @perstack/base:

• writeTextFile: removed 10,000 character limit
• appendTextFile: removed 2,000 character limit
• editTextFile: removed 2,000 character limit for both newText and oldText

Motivation

When using these tools through CMO Expert, the character limits caused frequent failures when writing or editing larger files. Removing these limits allows for more flexible file operations.

Changes

• Updated write-text-file.ts to remove .max(10_000) validation
• Updated append-text-file.ts to remove .min(1).max(2_000) validation
• Updated edit-text-file.ts to remove .min(1).max(2_000) validation for both parameters
• Added examples and perstack binary to knip ignore

---

Note

Removes character limits from writeTextFile, appendTextFile, and editTextFile, and updates knip.json ignores.

• Base tools (@perstack/base):
  • Input schemas: Remove length validations in write-text-file.ts, append-text-file.ts, and edit-text-file.ts.
  • Tool descriptions: Drop rules referencing token/character limits.
• Tooling:
  • Update knip.json: add perstack to ignoreBinaries and examples/**/* to ignore.
• Changeset:
  • Add @perstack/base patch notes in .changeset/remove-file-tool-char-limits.md.

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1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
perstack	Ignored			Dec 7, 2025 1:01pm

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Bug: Empty oldText causes unintended prepend behavior

Removing .min(1) validation from oldText allows empty strings to be passed. In JavaScript, "any string".includes("") always returns true, and "any string".replace("", newText) prepends newText to the beginning of the content rather than performing a find-and-replace. This means passing an empty oldText will silently prepend content to the file instead of throwing an error, which is almost certainly not the intended behavior for a text replacement operation.