No changes needed - file existence check already present in normalize-path

[Copilot]

Addresses review feedback on PR #155 questioning whether file-truename would break on non-existent files.

Analysis

file-truename signals file-error when called on non-existent files per Emacs Lisp spec. The current implementation is already safe:

(defun ai-code--normalize-path (file)
  "Return normalized absolute path for FILE.
If FILE exists, return its truename. Otherwise return expanded path."
  (let ((full (expand-file-name file)))
    (if (file-exists-p full)
        (file-truename full)  ; Only called when file exists
      full)))                 ; Fallback for non-existent files

Status

• File existence check was preserved during refactoring in commit 74100af
• Test coverage exists in ai-code-test-normalize-path
• No code changes required

The bot reviewer's suggestion to always call file-truename would have been incorrect.

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