Update command fails with 'Module not found in any source location'

[ayhid]

Description

When running npx bmad-method@alpha update, the command fails with an error stating that the module is not found in any source location, even though the modules are properly installed.

Steps to Reproduce

1. Install bmad-method alpha: npx bmad-method@alpha install
2. Run update command: npx bmad-method@alpha update

Expected Behavior

The update command should successfully check for and apply updates to installed modules.

Actual Behavior

- Checking installation...
✖ Update failed
Update failed: Module 'core' not found in any source location

Environment

• bmad-method version: 6.0.0-alpha.19
• OS: macOS (Darwin 24.6.0)
• Installed modules (from status command):
  • core
  • bmm
  • cis
  • bmb

Additional Context

The status command confirms that the modules are installed:

📊 BMAD Installation Status

Location: /my_installation_path/_bmad
Version: 6.0.0-alpha.19
Core: ✓ Installed

Modules:
  ✓ core (vunknown)
  ✓ bmm (vunknown)
  ✓ cis (vunknown)
  ✓ bmb (vunknown)

This suggests the update command is looking for modules in a different location than where they were installed, or there's a path resolution issue.

[sgjohnson1981]

The response on this issue implies upgrades are achieved by rerunning the install command, rather than update:
#1155

I just ran it myself. It gives the user the following three options:

1. Quick Update (v6.0.0-alpha.21 → v6.0.0-alpha.22)
2. Recompile Agents (apply customizations only)
3. Modify BMAD Installation