Migrates to collections 1.6, which deprecates iOS Intel targets.

.claude/skills/gradle-expert/references/dependency-graph.md

@@ -47,7 +47,7 @@
 
 ### :quartz (KMP Nostr Library)
 **Type:** Kotlin Multiplatform Library
-**Targets:** JVM, Android, iOS (iosX64, iosArm64, iosSimulatorArm64)
+**Targets:** JVM, Android, iOS (iosArm64, iosSimulatorArm64)
 **Dependencies:**
 - External: secp256k1, jackson, okhttp, kotlinx.coroutines, kotlinx.collections.immutable
 - Source sets: commonMain → jvmAndroid → {androidMain, jvmMain}, iosMain
@@ -127,7 +127,6 @@ commonMain (base)
     │   ├─ androidMain (Android platform)
     │   └─ jvmMain (Desktop platform)
     └─ iosMain (iOS platform)
-        ├─ iosX64Main
         ├─ iosArm64Main
         └─ iosSimulatorArm64Main
 ```

.claude/skills/kotlin-multiplatform/SKILL.md

@@ -110,8 +110,8 @@ Think of source sets as a dependency graph, not folders.
    │ - Jackson         │  │                  │
    │ - OkHttp          │  └────┬─────────────┘
    └───┬───────────┬───┘       │
-       │           │            ├─→ iosX64Main
-       ▼           ▼            ├─→ iosArm64Main
+       │           │           │
+       ▼           ▼           ├─→ iosArm64Main
   ┌─────────┐ ┌──────────┐     └─→ iosSimulatorArm64Main
   │android  │ │jvmMain   │
   │Main     │ │(Desktop) │
@@ -252,7 +252,7 @@ expect fun currentTimeSeconds(): Long
 
 **iOS (iosMain):**
 - Active development, framework configured
-- Architecture targets: iosX64Main, iosArm64Main, iosSimulatorArm64Main
+- Architecture targets: macosArm64Main, iosArm64Main, iosSimulatorArm64Main
 - Platform APIs via platform.posix, Security framework
 
 ### Web, wasm - Future Targets

.claude/skills/kotlin-multiplatform/references/source-set-hierarchy.md

@@ -29,7 +29,7 @@ Visual guide to source set organization with concrete examples from the codebase
 │  - Jackson       │    │   - Platform libs │
 │  - OkHttp        │    └───────┬───────────┘
 └────┬─────────┬───┘            │
-     │         │                ├─→ iosX64Main (simulator Intel)
+     │         │                │
      │         │                ├─→ iosArm64Main (device ARM64)
      │         │                └─→ iosSimulatorArm64Main (Apple Silicon)
      ▼         ▼
@@ -238,7 +238,6 @@ iosMain {
     }
 }
 
-val iosX64Main by getting { dependsOn(iosMain.get()) }
 val iosArm64Main by getting { dependsOn(iosMain.get()) }
 val iosSimulatorArm64Main by getting { dependsOn(iosMain.get()) }
 ```
@@ -249,7 +248,6 @@ val iosSimulatorArm64Main by getting { dependsOn(iosMain.get()) }
 - Different from Android/Desktop
 
 **Architecture targets:**
-- iosX64Main: Intel simulator
 - iosArm64Main: Device (iPhone, iPad)
 - iosSimulatorArm64Main: Apple Silicon simulator
 
@@ -326,7 +324,7 @@ commonMain
 | androidMain | jvmAndroid | Android framework | Activity, ViewModel |
 | jvmMain | jvmAndroid | JVM + Compose Desktop | Window, MenuBar |
 | iosMain | commonMain | iOS platform | Security framework |
-| iosX64Main | iosMain | Simulator (Intel) | Architecture-specific |
+| iosMain | Simulator (Intel) | Architecture-specific |
 | iosArm64Main | iosMain | Device (ARM64) | Architecture-specific |
 | jsMain | commonMain | JS/DOM | Web (future) |
 | wasmMain | commonMain | wasm APIs | WebAssembly (future) |

.claude/skills/kotlin-multiplatform/references/target-compatibility.md

@@ -76,7 +76,6 @@ fun main() = application {
 
 **Source sets:**
 - iosMain (common iOS code)
-- iosX64Main (Intel simulator)
 - iosArm64Main (device - iPhone/iPad)
 - iosSimulatorArm64Main (Apple Silicon simulator)
 
@@ -110,7 +109,7 @@ actual object Secp256k1Instance {
 ```kotlin
 // quartz/build.gradle.kts
 kotlin {
-    listOf(iosX64(), iosArm64(), iosSimulatorArm64())
+    listOf(macosArm64(), iosArm64(), iosSimulatorArm64())
         .forEach { target ->
             target.binaries.framework {
                 baseName = "quartz-kmpKit"
@@ -310,7 +309,7 @@ fun parseJson(json: String): Event {
 - Manual desktop app testing
 
 **iOS:**
-- Unit tests: iosTest (iosX64Test, iosArm64Test, etc.)
+- Unit tests: iosTest (iosArm64Test, etc.)
 - Simulator/device testing
 
 **Web (future):**