chore: rename cameleer3 to cameleer

Rename Java packages from com.cameleer3 to com.cameleer, module
directories from cameleer3-* to cameleer-*, and all references
throughout workflows, Dockerfiles, docs, migrations, and pom.xml.

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

docs/superpowers/specs/2026-04-14-container-startup-log-capture-design.md

@@ -27,7 +27,7 @@ void stopLogCaptureByApp(String appSlug, String envSlug);
 
 ### ContainerLogForwarder
 
-**Package:** `com.cameleer3.server.app.runtime` (Docker-specific, alongside `DockerRuntimeOrchestrator`, `DockerEventMonitor`, etc.)
+**Package:** `com.cameleer.server.app.runtime` (Docker-specific, alongside `DockerRuntimeOrchestrator`, `DockerEventMonitor`, etc.)
 
 **Responsibilities:**
 - Manages active capture sessions in a `ConcurrentHashMap<String, CaptureSession>` keyed by container ID