feat: implement Phase 1 MVP of Implausibly

Working Android dashboard app for self-hosted Plausible Analytics CE.
Connects to Plausible API v2 (POST /api/v2/query), displays top stats,
visitor chart, top sources, and top pages with date range selection.

Architecture: Kotlin + Jetpack Compose + Material 3 + Hilt + Ktor +
SQLDelight + EncryptedSharedPreferences. Single :app module, four-layer
unidirectional data flow (UI → ViewModel → Repository → Data).

Includes: instance management, site list, caching with TTL per date
range, encrypted API key storage, custom Canvas visitor chart,
pull-to-refresh, and unit tests for API, cache, repository, and
domain model layers.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,33 @@
+# Gradle
+.gradle/
+build/
+!gradle/wrapper/gradle-wrapper.jar
+
+# IDE
+.idea/
+*.iml
+*.iws
+*.ipr
+.vscode/
+
+# Android
+local.properties
+*.apk
+*.aab
+*.ap_
+*.dex
+
+# Kotlin
+*.class
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Secrets
+*.jks
+*.keystore
+google-services.json
+
+# Claude
+.claude/