sdd relevance compare： by humanBeing

1. leanSpec vs : cc-sdd: gemini3 told me the former is for agile and small team, while the latter is for big team and rigid rule (briefing since deep research failed)

2. beads: i think its a PM tracking tool over its other feature,while since the leanSpec can provide something similiar so

other notes:

since leanSpec heavility rely on MCP or cli integration with LLM , so its token-usage-focus framework, while beads seems can search with semantically, to be confirm (the beads doc said the spec files are .md ones, and can be distributed with team using git, meanwhile, it provides stage-layer with sqlite for search,etc)