Adds a first-class strategic_reserve registry (schema 327) and seed (115)
unifying existing reserve-shaped primitives (carbon buffer, commons reserve
allocation, funding-round capital, seed-vault biodiversity, standby capacity)
into a monitorable reserve layer.

- services/strategic_reserve: health (adequacy/headroom/trigger-breach),
  seed-vault biodiversity proxy, CLI (health/list/seed-vault/propose-release)
- report_generator.generate_strategic_reserve: network-wide + per-location
  view with fundability_signal; release proposals are DRAFT only
- Read-only; no automatic on-chain drawdown (human approval required)

CI runs only seed.sh (not seed-pilot.sh), so the Adelphi location,
commons_redistribution_policy, and network/dao funding_round rows are
absent. Wrap the derived held_quantity subqueries in COALESCE(..., 0) so
a missing source row yields 0 instead of NULL (which violated the
NOT NULL constraint).

Real values are preserved when pilot data is present (local dev):
commons=70000, financial=610000, seed=7 distinct lines.