build: drive all module versions from the catalog

Make every module read its release version from gradle/libs.versions.toml
instead of carrying its own literal, so a release bump is a single-file edit.

- Move the Android versionCode out of amethyst/build.gradle.kts into the
  catalog as `appCode`; amethyst reads it via libs.versions.appCode.get().
- quartz publishes with version = libs.versions.app.get().
- geode generates a BuildConfig.VERSION from the catalog (new
  generateVersionFile task) and RelayInfo.VERSION reads it, so the NIP-11
  software version tracks releases.
- Update the root build comment to point at the appCode entry.

Version-neutral: everything still resolves to the current 1.12.0 / 448.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

amethyst/build.gradle.kts

@@ -76,7 +76,10 @@ android {
             libs.versions.android.targetSdk
                 .get()
                 .toInt()
-        versionCode = 448
+        versionCode =
+            libs.versions.appCode
+                .get()
+                .toInt()
         versionName = generateVersionName(libs.versions.app.get(), rootDir)
         buildConfigField("String", "RELEASE_NOTES_ID", "\"40e817712e397c07ba31784a92fa474aa095896a828c0e2dea0d09c60d49ee1e\"")
 

build.gradle.kts

@@ -16,7 +16,7 @@ plugins {
 }
 
 // Shared app version for all subprojects — read from gradle/libs.versions.toml.
-// Android versionCode stays local in amethyst/build.gradle.kts (must be monotonic int).
+// Android versionCode is the `appCode` entry in the same catalog (must be monotonic int).
 // Desktop packageVersion inherits via project.version in desktopApp/build.gradle.kts.
 val appVersion = libs.versions.app.get()
 

geode/build.gradle.kts

@@ -19,9 +19,34 @@ kotlin {
     }
 }
 
+// Generate a BuildConfig.kt carrying the app version from the catalog so
+// RelayInfo.VERSION (reported over NIP-11) tracks releases automatically
+// instead of being a hand-bumped literal.
+val generateVersionFile by tasks.registering {
+    val versionValue = libs.versions.app.get()
+    val outDir = layout.buildDirectory.dir("generated/version/kotlin")
+    inputs.property("version", versionValue)
+    outputs.dir(outDir)
+    doLast {
+        val file = outDir.get().file("com/vitorpamplona/geode/BuildConfig.kt").asFile
+        file.parentFile.mkdirs()
+        file.writeText(
+            buildString {
+                appendLine("// Generated by the :geode build — do not edit.")
+                appendLine("package com.vitorpamplona.geode")
+                appendLine()
+                appendLine("internal object BuildConfig {")
+                appendLine("    const val VERSION = \"$versionValue\"")
+                appendLine("}")
+            },
+        )
+    }
+}
+
 sourceSets {
     main {
         kotlin.srcDir("src/main/kotlin")
+        kotlin.srcDir(generateVersionFile)
     }
     test {
         kotlin.srcDir("src/test/kotlin")

geode/src/main/kotlin/com/vitorpamplona/geode/RelayInfo.kt

@@ -38,10 +38,10 @@ data class RelayInfo(
     val json: String by lazy { JsonMapper.toJson(document) }
 
     companion object {
-        const val NAME = "geode"
-        const val DESCRIPTION = "Embedded Nostr relay from the Amethyst quartz library."
+        const val NAME = "Geode"
+        const val DESCRIPTION = "Nostr relay from Amethyst"
         const val SOFTWARE = "https://github.com/vitorpamplona/amethyst/tree/main/geode"
-        const val VERSION = "1.12.0"
+        const val VERSION = BuildConfig.VERSION
 
         /**
          * NIPs this relay implements out of the box. Single source of

gradle/libs.versions.toml

@@ -1,8 +1,9 @@
 [versions]
 # Amethyst app version — single source of truth consumed by both Android (amethyst/)
-# and Desktop (desktopApp/). Android versionCode is bumped independently in
-# amethyst/build.gradle because it must be a monotonic integer.
+# and Desktop (desktopApp/). `appCode` is the Android versionCode: a monotonic
+# integer that must increment on every release, even when `app` is unchanged.
 app = "1.12.0"
+appCode = "448"
 accompanistAdaptive = "0.37.3"
 cachemapVersion = "0.2.4"
 composeMultiplatform = "1.11.1"

quartz/build.gradle.kts

@@ -449,7 +449,9 @@ mavenPublishing {
     coordinates(
         groupId = "com.vitorpamplona.quartz",
         artifactId = "quartz",
-        version = "1.12.0",
+        // Library version tracks the app version in gradle/libs.versions.toml,
+        // bumped in lockstep with each release.
+        version = libs.versions.app.get(),
     )
 
     // Configure publishing to Maven Central