Update README, add AGENTS.md

README: drop the stale Skip attribution line (the project moved to
Kotlin Multiplatform entirely; the "Kotlin Multiplatform" line below
it already covers the current tooling) and fix the stated minimum
Android version — androidApp's actual minSdk is 24 (Android 7.0), not
10.0.

AGENTS.md: a navigation/orientation doc for AI agents, focused on the
things that aren't obvious from reading the code or that took real
trial-and-error to establish this session — the localization
architecture constraint (no synchronous, cross-platform way to
resolve a moko-resources string outside Compose/Apple, so shared code
must return data, not sentences), the Swift-interop plain-function
convention, per-platform currency-data quirks (web's ICU-dependent
currency list, missing color-emoji font), and the verification
workflow for each platform (especially that Compose for Web renders
to a <canvas>, so headless Chrome + specific GL flags is the way to
actually see a change, not DOM inspection).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FXcrACM5sok3M1KQJ8kByy

README.md

@@ -27,7 +27,7 @@ height="70">](https://github.com/tyiu/sats-price/releases)
 
 ## Supported Platforms
 
-iOS 16.0+ • macOS 13.0+ • Android 10.0+
+iOS 16.0+ • macOS 13.0+ • Android 7.0+
 
 ## Kotlin Multiplatform
 
@@ -72,8 +72,6 @@ Use the run button in your IDE's editor gutter, or run tests using Gradle tasks:
 
 ## Attribution
 
-This project depends on [Skip](https://skip.tools) to build as a multi-platform app.
-
 This project uses [Kotlin Multiplatform](https://www.jetbrains.com/help/kotlin-multiplatform-dev/get-started.html),
 [Compose Multiplatform](https://github.com/JetBrains/compose-multiplatform/#compose-multiplatform), and
 [Kotlin/Wasm](https://kotl.in/wasm/).