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>

build.gradle.kts

@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-only
+plugins {
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.kotlin.android) apply false
+    alias(libs.plugins.kotlin.compose) apply false
+    alias(libs.plugins.kotlin.serialization) apply false
+    alias(libs.plugins.hilt) apply false
+    alias(libs.plugins.ksp) apply false
+    alias(libs.plugins.sqldelight) apply false
+}