Port bug fixes that landed on main after this branch forked:
1. Remove dead .agent.yaml/.xml fallback logic from skill-manifest.js
and simplify scanInstalledModules to hasAgents || hasSkills
2. Fix config paths (issue 55): add resolveConfigValue,
cleanPromptValue, normalizeExistingValueForPrompt to prevent
template duplication on re-prompt
3. Fix empty agent-manifest.csv: replace collectAgents/getAgentsFromDir
with getAgentsFromDirRecursive that walks full module trees, fix 9
BMM manifests type: skill → type: agent, add dead-code TODO to
bmad-artifacts.js
4. Fix custom module install crash: discoverPaths was receiving the
clean Config (which strips customContent) instead of customConfig
7877513513