chore: replace all mana-core-auth references with mana-auth

Update docker-compose (dev + macmini), CI/CD workflows, Prometheus,
package.json scripts, env generation, database setup, CODEOWNERS,
and dependabot to reference the new Hono-based mana-auth service.
Delete zombie mana-core-auth directory (already removed from Git).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/daily-tests.yml

@@ -4,7 +4,7 @@
 # Manual Trigger: workflow_dispatch for on-demand test runs
 # Features:
 #   - Integration tests (E2E flows)
-#   - mana-core-auth service tests with coverage
+#   - mana-auth service tests with coverage
 #   - Database setup/teardown
 #   - Discord notifications (always sent on success or failure)
 
@@ -38,9 +38,9 @@ env:
   COVERAGE_THRESHOLD: ${{ github.event.inputs.coverage_threshold || '80' }}
 
 jobs:
-  # Job 1: Test mana-core-auth with coverage
-  test-mana-core-auth:
-    name: Test mana-core-auth
+  # Job 1: Test mana-auth with coverage
+  test-mana-auth:
+    name: Test mana-auth
     runs-on: ubuntu-latest
 
     services:
@@ -90,13 +90,13 @@ jobs:
         run: pnpm run build:packages
 
       - name: Setup test database
-        working-directory: services/mana-core-auth
+        working-directory: services/mana-auth
         env:
           DATABASE_URL: postgresql://manacore:testpassword@localhost:5432/manacore
         run: pnpm run db:migrate
 
       - name: Run tests with coverage
-        working-directory: services/mana-core-auth
+        working-directory: services/mana-auth
         env:
           DATABASE_URL: postgresql://manacore:testpassword@localhost:5432/manacore
           REDIS_URL: redis://localhost:6379
@@ -114,16 +114,16 @@ jobs:
         if: always()
         uses: actions/upload-artifact@v4
         with:
-          name: coverage-mana-core-auth
-          path: services/mana-core-auth/coverage
+          name: coverage-mana-auth
+          path: services/mana-auth/coverage
           retention-days: 30
 
       - name: Check coverage threshold
-        working-directory: services/mana-core-auth
+        working-directory: services/mana-auth
         run: |
           if [ -f "coverage/coverage-summary.json" ]; then
             COVERAGE=$(node -e "const c = require('./coverage/coverage-summary.json'); console.log(c.total.lines.pct)")
-            echo "Coverage for mana-core-auth: ${COVERAGE}%"
+            echo "Coverage for mana-auth: ${COVERAGE}%"
 
             if (( $(echo "$COVERAGE < $COVERAGE_THRESHOLD" | bc -l) )); then
               echo "::error::Coverage ${COVERAGE}% is below threshold ${COVERAGE_THRESHOLD}%"
@@ -183,7 +183,7 @@ jobs:
         run: pnpm run build:packages
 
       - name: Setup databases for integration tests
-        working-directory: services/mana-core-auth
+        working-directory: services/mana-auth
         env:
           DATABASE_URL: postgresql://manacore:testpassword@localhost:5432/manacore
         run: pnpm run db:migrate
@@ -197,7 +197,7 @@ jobs:
           JWT_AUDIENCE: manacore
         run: |
           # Run auth integration tests
-          cd services/mana-core-auth
+          cd services/mana-auth
           if [ -d "test/integration" ]; then
             pnpm run test:e2e || pnpm run test -- test/integration
           fi
@@ -207,13 +207,13 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: integration-test-results
-          path: services/mana-core-auth/test-results
+          path: services/mana-auth/test-results
           retention-days: 30
 
   # Job 3: Always send Discord notification (success or failure)
   notify:
     name: Discord Notification
-    needs: [test-mana-core-auth, test-integration]
+    needs: [test-mana-auth, test-integration]
     if: always()
     runs-on: ubuntu-latest
 
@@ -224,15 +224,15 @@ jobs:
       - name: Download coverage summary
         uses: actions/download-artifact@v4
         with:
-          name: coverage-mana-core-auth
-          path: coverage-mana-core-auth
+          name: coverage-mana-auth
+          path: coverage-mana-auth
         continue-on-error: true
 
       - name: Check test results
         id: check
         run: |
           # Check if both jobs succeeded
-          AUTH_STATUS="${{ needs.test-mana-core-auth.result }}"
+          AUTH_STATUS="${{ needs.test-mana-auth.result }}"
           INTEGRATION_STATUS="${{ needs.test-integration.result }}"
 
           if [ "$AUTH_STATUS" = "success" ] && [ "$INTEGRATION_STATUS" = "success" ]; then
@@ -249,8 +249,8 @@ jobs:
           echo "run_url=$RUN_URL" >> $GITHUB_OUTPUT
 
           # Get coverage if available
-          if [ -f "coverage-mana-core-auth/coverage-summary.json" ]; then
-            COVERAGE=$(node -e "const c = require('./coverage-mana-core-auth/coverage-summary.json'); console.log(c.total.lines.pct)")
+          if [ -f "coverage-mana-auth/coverage-summary.json" ]; then
+            COVERAGE=$(node -e "const c = require('./coverage-mana-auth/coverage-summary.json'); console.log(c.total.lines.pct)")
             echo "coverage=${COVERAGE}%" >> $GITHUB_OUTPUT
           else
             echo "coverage=N/A" >> $GITHUB_OUTPUT
@@ -296,8 +296,8 @@ jobs:
                     \"inline\": true
                   },
                   {
-                    \"name\": \"🧪 mana-core-auth\",
-                    \"value\": \"${{ needs.test-mana-core-auth.result }}\",
+                    \"name\": \"🧪 mana-auth\",
+                    \"value\": \"${{ needs.test-mana-auth.result }}\",
                     \"inline\": true
                   },
                   {