feat(energy): SPR policy classification layer (#2881)

* feat(energy): add SPR policy classification layer with 66-country registry

Static JSON registry classifying strategic petroleum reserve regimes for
66 countries (all IEA members + major producers/consumers). Integrates
into energy profile handler, shock model limitations, analyst context,
spine seeder, and CDP UI.

- scripts/data/spr-policies.json: 66-entry registry with regime, source, asOf
- scripts/seed-spr-policies.mjs: seeder following chokepoint-baselines pattern
- Proto fields 51-59 on GetCountryEnergyProfileResponse
- Handler reads SPR registry from Redis, populates proto fields
- Shock model adds fuel-mode-gated SPR limitations for non-IEA gov SPR
- Analyst context refactored to accumulator pattern (IEA + SPR parts)
- CDP UI: SPR badge for non-IEA government_spr, muted text for spare_capacity
- Spine integration: SPR fields in shockInputs + hasSprPolicy coverage flag
- Cache keys, health, bootstrap, seed-health registrations
- Tests: registry shape, ISO2, regime enum, required entries, no estimatedFillPct

* fix(energy): remove SPR from bootstrap (server-only); narrow SPR hasAny gate to renderable regimes

* feat(energy): render "no known SPR" risk note for countries with regime=none

* fix(energy): human-readable SPR regime labels; parallelize spine+registry reads in analyst

docs/api/IntelligenceService.openapi.yaml

@@ -2230,6 +2230,26 @@ components:
                     type: string
                 emberAvailable:
                     type: boolean
+                sprRegime:
+                    type: string
+                    description: Phase 4 — SPR policy classification
+                sprCapacityMb:
+                    type: number
+                    format: double
+                sprOperator:
+                    type: string
+                sprIeaMember:
+                    type: boolean
+                sprStockholdingModel:
+                    type: string
+                sprNote:
+                    type: string
+                sprSource:
+                    type: string
+                sprAsOf:
+                    type: string
+                sprAvailable:
+                    type: boolean
         ComputeEnergyShockScenarioRequest:
             type: object
             properties: