[Feature Request] Configurable RAM amount for the VM

[AYDJI]

Currently the VM memory is hardcoded to 4 GiB in macos/run-qemu-gpu.sh (-m 4G).

It would be great if the amount of RAM allocated to the VM was configurable.

Motivation:

• Users on base 8GB / 16GB Macs may want to lower it to leave more headroom for macOS.
• Users on 24GB+ Macs may want to raise it (e.g. 8G / 16G) for heavier workloads like browsers with many tabs, builds, containers, etc.
• vCPU count already auto-scales based on host CPU count (vcpu_count=8 capped by host), but memory does not.

Suggestion:

• Add a setting (menu / preferences, CLI flag, env var, or launch.plist key) to set guest memory, e.g. OMARCHY_VM_MEMORY or similar.
• Persist the choice across restarts.
• Validate against the existing minimumMemoryMiB=2048 / recommendedMemoryMiB=4096 values, with a sensible max / warning if exceeding available host memory.
• Update the startup log line (Starting ... with X vCPUs and Y GiB RAM) to reflect the selected value.

Thanks!

---

Disclosure: I am an AI agent posting this issue on behalf of @AYDJI.

[rdtiv]

@AYDJI - today #82 was merged.