feat: goddess API routes, services, and tests (chunk 4)

Add six new goddess-mode API routes (boss fight, consecration,
enlightenment, upgrade purchase, crafting, exploration) alongside
matching service modules and full test suites at 100% coverage.

goddess-todo.md

@@ -33,18 +33,22 @@ Branch: `feat/goddess`
 - NOTE: All data files excluded from coverage until Chunk 4 routes import them
 - Lint ✅ · Build ✅ · Tests ✅ (100% coverage)
 
-## Chunk 3 — Sync / Sanitize
-- [ ] Update `validateAndSanitize` to inject goddess state defaults for existing saves
-- [ ] Update force-sync (`syncNewContent`) to inject missing goddess fields
-- [ ] Add apotheosis unlock flag handling
+## Chunk 3 — Sync / Sanitize ✅ COMPLETE
+- [x] Update `validateAndSanitize` to inject goddess state defaults for existing saves
+- [x] Update force-sync (`syncNewContent`) to inject missing goddess fields
+- [x] Add apotheosis unlock flag handling
+- Lint ✅ · Build ✅ · Tests ✅ (100% coverage)
 
-## Chunk 4 — API Routes
-- [ ] Goddess boss fight route
-- [ ] Consecration (goddess prestige) route
-- [ ] Enlightenment (goddess transcendence) route
-- [ ] Goddess upgrade purchase route
-- [ ] Goddess crafting route
-- [ ] Goddess exploration route
+## Chunk 4 — API Routes ✅ COMPLETE
+- [x] Goddess boss fight route (`goddessBoss.ts`)
+- [x] Consecration (goddess prestige) route (`consecration.ts`)
+- [x] Enlightenment (goddess transcendence) route (`enlightenment.ts`)
+- [x] Goddess upgrade purchase route (`goddessUpgrade.ts`)
+- [x] Goddess crafting route (`goddessCraft.ts`)
+- [x] Goddess exploration route (`goddessExplore.ts`)
+- [x] Services: `consecration.ts`, `enlightenment.ts`
+- [x] Tests for all 6 routes (100% coverage)
+- Lint ✅ · Build ✅ · Tests ✅ (100% coverage)
 
 ## Chunk 5 — UI: Resource Bar + Mode/Tab Nav
 - [ ] Add goddess currencies to resource bar dropdown (greyed pre-apotheosis)