rename: cloud-installer → cloud-sync

'installer' implied one-way install (matching packwiz-installer); this
tool is bidirectional sync (pull on launch, push on exit). Aligns with
the existing automc <scope>-<role> pattern: cloud-svc ↔ cloud-sync,
matching mc-router, mc-wrapper, gate-waker.

Gitea repo renamed via API (id 2974 preserved); jar filename now
cloud-sync-<version>.jar. Build verified post-rename.

src/main/kotlin/center/timemachine/cloud/Cli.kt

@@ -7,13 +7,13 @@ package center.timemachine.cloud
  */
 object Cli {
     fun runPull(args: Array<String>): Int {
-        println("cloud-installer pull: ${args.joinToString(" ")}")
+        println("cloud-sync pull: ${args.joinToString(" ")}")
         println("(not yet implemented; skeleton commit only)")
         return 0
     }
 
     fun runPush(args: Array<String>): Int {
-        println("cloud-installer push: ${args.joinToString(" ")}")
+        println("cloud-sync push: ${args.joinToString(" ")}")
         println("(not yet implemented; skeleton commit only)")
         return 0
     }

src/main/kotlin/center/timemachine/cloud/Main.kt

@@ -4,11 +4,11 @@ import com.formdev.flatlaf.themes.FlatMacDarkLaf
 import javax.swing.UIManager
 
 /**
- * cloud-installer entrypoint.
+ * cloud-sync entrypoint.
  *
  * Invoked twice in the launcher hooks:
- *   PreLaunch:  java -jar cloud-installer.jar pull  --url=... --pack-folder=...
- *   PostExit:   java -jar cloud-installer.jar push  --url=... --pack-folder=...
+ *   PreLaunch:  java -jar cloud-sync.jar pull  --url=... --pack-folder=...
+ *   PostExit:   java -jar cloud-sync.jar push  --url=... --pack-folder=...
  *
  * Exit codes:
  *   0  ok
@@ -21,7 +21,7 @@ fun main(args: Array<String>) {
         return
     }
     if (args[0] in listOf("--version", "-V")) {
-        println("cloud-installer 0.1.0")
+        println("cloud-sync 0.1.0")
         return
     }
 
@@ -50,10 +50,10 @@ fun main(args: Array<String>) {
 
 private fun printHelp() {
     println("""
-        cloud-installer — per-user state sync for Minecraft clients
+        cloud-sync — per-user state sync for Minecraft clients
 
         Usage:
-          java -jar cloud-installer.jar <subcommand> [flags]
+          java -jar cloud-sync.jar <subcommand> [flags]
 
         Subcommands:
           pull     Fetch user's cloud state, apply conflict resolution, write to instance.