publish: 'SKILL.md required' error despite file existing

[apollostreetcompany]

Description

clawdhub publish fails with "SKILL.md required" even when the file exists and is valid.

Steps to Reproduce

1. Create a skill directory with a valid SKILL.md:

mkdir test-skill && cd test-skill
cat > SKILL.md << 'EOF'
---
name: test-skill
description: Test skill for debugging
homepage: https://github.com/example/test
---
# Test Skill
A test skill.
EOF

2. Run publish:

clawdhub publish . --slug test-skill --version 0.1.0 --name "Test Skill" --changelog "Initial"

3. Error occurs:

- Preparing test-skill@0.1.0
Error: SKILL.md required

Environment

• clawdhub CLI: v0.3.0
• Node.js: v24.13.0
• OS: Ubuntu 24.04

Observations

• File definitely exists (ls confirms SKILL.md present)
• File has valid YAML frontmatter (verified with hexdump - proper UTF-8, Unix line endings)
• Tested with both relative (.) and absolute paths
• Same error occurs with minimal SKILL.md content
• Using full path instead of . causes timeout instead:

  Error: Non-error was thrown: "Timeout". You should only throw errors.
  

Debug Attempt

Tested listTextFiles() directly via Node.js REPL using the clawdhub module - it correctly finds and returns SKILL.md. The issue appears to be in the publish command flow, not the file detection function itself.

Workaround

None found yet. Cannot publish skills via CLI.