Updated code block formatting in `Ping-Service_Impl_01-2026.md` for consistency by switching from `kotlin` to `text`. Refactored `README.md` to rename `02_Onboarding` to `02_Guides` for improved clarity. Adjusted UI code example in `UIUXDesigner.md` with added descriptive comments.
Archived several outdated reports (`Ping-Service_Impl_01-2026.md`, `Frontend_Integration_Status.md`, etc.) and added archival notes and references to updated documents. Introduced a centralized reference structure for tech stack documentation, consolidating files under `01_Architecture/Reference/Tech_Stack`. Added new resources (`Gradle_Kotlin_DSL_Primer`, `Kotlin_2-3-0_ReleaseNotes`) for improved project organization and clarity.
