Why this is a good first issue

small surface area and protects against docs/help drift.

Evidence

app/cli/commands/__init__.py defines _COMMANDS, while app/cli/layout.py separately defines _HELP_COMMANDS.

Likely files

• app/cli/commands/__init__.py
• app/cli/layout.py
• tests/cli/

Acceptance criteria

• add a test that compares the registered command names with the help table entries
• fail clearly if a command is added in one place but not the other
• avoid coupling the test to unrelated formatting details

First-time contributors

This issue is intentionally scoped to be approachable for first-time contributors: one focused change, clear files, and low regression risk.