v1.1.6

Bug Fix: Multiple OpenCode Instances Spawning (fixes #4)

• Fixed container health check failing due to missing pgrep (added procps package)
• Added tmux for session persistence — reconnecting now reattaches to the existing session instead of spawning a new OpenCode instance
• Prevents orphaned OpenCode processes from accumulating and consuming memory on resource-constrained devices (e.g. Raspberry Pi)