chore(docs, frontend): document and implement Web-App sync workaround for async driver issue

- Added session log documenting Web-App stabilization, including fixes for Webpack build and login issues.
- Implemented full-sync workaround in `PingEventRepositoryImpl` due to SQLDelight async driver limitations.
- Updated `PingDashboard` to display sync completion messages.
- Added `libs.sqldelight.coroutines` dependency and regenerated SQLDelight queries.
- Updated roadmap and journal with progress on frontend sync integration.

frontend/features/ping-feature/build.gradle.kts

@@ -52,6 +52,7 @@ kotlin {
 
       // Local DB (SQLDelight)
       implementation(projects.frontend.core.localDb)
+      implementation(libs.sqldelight.coroutines) // Explicitly add coroutines extension for async driver support
 
       // Shared sync contract base (Syncable)
       implementation(projects.core.coreDomain)