feat: SQLite persistence core

Add core SQLite persistence packages:
- db-sqlite-persisted-collection-core: shared adapter, runtime, tx pruning, coordinator protocol
- db-browser-wa-sqlite-persisted-collection: browser persistence via wa-sqlite (OPFS) with multi-tab coordinator
- db-react-native-sqlite-persisted-collection: React Native/Expo persistence via expo-sqlite
- db: index lifecycle events, removeIndex API, hydration support

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: kevin-dp

.github/workflows/e2e-tests.yml

@@ -9,7 +9,7 @@ jobs:
   e2e-tests:
     name: Run E2E Tests
     runs-on: ubuntu-latest
-    timeout-minutes: 10
+    timeout-minutes: 35
 
     steps:
       - name: Checkout code
@@ -62,6 +62,43 @@ jobs:
         env:
           ELECTRIC_URL: http://localhost:3000
 
+      - name: Run React Native/Expo persisted collection E2E tests
+        run: |
+          cd packages/db-react-native-sqlite-persisted-collection
+          pnpm test:e2e
+
+      - name: Run React Native/Expo runtime E2E lane
+        run: |
+          is_fork_pr=false
+          require_runtime_lane=${TANSTACK_DB_REQUIRE_MOBILE_RUNTIME_LANE:-0}
+          if [ "${GITHUB_EVENT_NAME}" = "pull_request" ]; then
+            is_fork_pr=$(jq -r '.pull_request.head.repo.fork' "${GITHUB_EVENT_PATH}")
+          fi
+
+          if [ "${is_fork_pr}" = "true" ]; then
+            echo "Skipping runtime mobile lane for fork PR (repo vars are unavailable)."
+            exit 0
+          fi
+
+          if [ -z "${TANSTACK_DB_MOBILE_SQLITE_FACTORY_MODULE}" ]; then
+            if [ "${require_runtime_lane}" = "1" ]; then
+              echo "::error::Missing repository variable TANSTACK_DB_MOBILE_SQLITE_FACTORY_MODULE while TANSTACK_DB_REQUIRE_MOBILE_RUNTIME_LANE=1."
+              echo "::error::Set TANSTACK_DB_MOBILE_SQLITE_FACTORY_MODULE (and optional TANSTACK_DB_MOBILE_SQLITE_FACTORY_EXPORT)."
+              exit 1
+            fi
+
+            echo "Skipping runtime mobile lane (no TANSTACK_DB_MOBILE_SQLITE_FACTORY_MODULE configured)."
+            echo "Set TANSTACK_DB_REQUIRE_MOBILE_RUNTIME_LANE=1 to enforce this lane."
+            exit 0
+          fi
+
+          cd packages/db-react-native-sqlite-persisted-collection
+          pnpm test:e2e:runtime
+        env:
+          TANSTACK_DB_MOBILE_SQLITE_FACTORY_MODULE: ${{ vars.TANSTACK_DB_MOBILE_SQLITE_FACTORY_MODULE }}
+          TANSTACK_DB_MOBILE_SQLITE_FACTORY_EXPORT: ${{ vars.TANSTACK_DB_MOBILE_SQLITE_FACTORY_EXPORT }}
+          TANSTACK_DB_REQUIRE_MOBILE_RUNTIME_LANE: ${{ vars.TANSTACK_DB_REQUIRE_MOBILE_RUNTIME_LANE }}
+
       - name: Stop Docker services
         if: always()
         run: |