Codex CLI: file references report 'no matches' even for existing files in CWD

Problem
In Codex CLI I try to reference files that definitely exist in the current working directory / repo, but Codex responds with "no matches".

Examples

• In a repo where src/GameScaler.ts exists, attempting to reference it via @GameScaler in chat yields "no matches".

Expected behavior

• When a user references an existing file path (relative to repo root or CWD), Codex should resolve it and include it as context (or at minimum provide a clear error explaining the required syntax / root).

Actual behavior

• Codex replies with "no matches" even though the file exists.

Environment

• Product: Codex CLI
• Version: codex-cli 0.77.0
• OS: macOS 15.5 (24F74), arm64
• Terminal: Ghostty 1.2.3