NE-4: recent projects logged

Projects that exist on the Pi right now — what’s active, what’s paused, what’s archival. Catalogued so the landscape is legible. This feeds into POD formation.

NE-5: session/doc conventions → upstream/root features

Several conventions from this session and SEED-036 need to be established as load-bearing upstream features requiring definition, exploration, and install: - SPARK/SEED/SPROUT/POD taxonomy (this doc) - Mode A/B handoff roles - Baseline protocol (NE-1) - Collaborative protocol (NS-5) - Organizational etiquette (NS-4)