Fix: Summarize the project

[agent-foreman-serverless]

Closes ES-8

The exploration agent's findings line up with what I'd already gathered directly, so the README is accurate as written.

Summary

The Linear issue ("Summarize the project," no description, comments are just generic agent-session bootstrap chatter) pointed to one concrete gap: this Android project (Barebone, a Kotlin app with auth, a Room-backed contacts list, FCM notifications, bottom nav, and Google Maps/Places via Retrofit) had no README at all.

I added README.md at the repo root summarizing:

• What the app does and its main features (auth flows, contacts list, maps/places, push notifications, bottom nav)
• Tech stack (Kotlin, AGP 4.0.2, AndroidX, Room, Retrofit/RxJava2, Firebase, Play Services Maps/Places)
• Package/module structure with file paths
• Build instructions (including the required secure.properties API keys and google-services.json)
• Test status (only default boilerplate stubs exist, no real suite)

Tests: No Java/Android SDK is available in this sandbox, and the project only contains the default ExampleUnitTest/ExampleInstrumentedTest stubs (no project-specific tests), so there was nothing runnable to execute.

Working tree is clean except for the new untracked README.md, ready to commit.

[jeevareddy]

@agent-foreman-serverless quick question — what does the README change in this PR actually say? Just quote the line, no need to change anything.