Increase VM defaults, restart VM on new workspace, make rebuild writable

bin/qvm-rebuild

@@ -79,7 +79,11 @@ build_base_image() {
     
     # Copy the qcow2 to base image location
     log_info "Copying image to: $QVM_BASE_IMAGE"
+    # Remove existing image first (may be read-only from Nix store copy)
+    rm -f "$QVM_BASE_IMAGE"
     cp -L "$qcow2_path" "$QVM_BASE_IMAGE"
+    # Ensure the new image is writable for future rebuilds
+    chmod 644 "$QVM_BASE_IMAGE"
     
     # Remove the result symlink
     rm -f "$build_result"

bin/qvm-run

@@ -183,7 +183,29 @@ main() {
         newly_added=1
     fi
     
-    # Ensure VM is running
+    # If this is a newly registered workspace, restart VM to mount it
+    if [[ "$newly_added" -eq 1 ]] && is_vm_running; then
+        log_info "New workspace registered. Restarting VM to mount it..."
+        
+        # Path to qvm-stop and qvm-start scripts
+        local script_dir="${QVM_LIB_DIR}/../bin"
+        local qvm_stop="$script_dir/qvm-stop"
+        local qvm_start="$script_dir/qvm-start"
+        
+        # Stop the VM
+        if ! "$qvm_stop"; then
+            die "Failed to stop VM"
+        fi
+        
+        # Start the VM with new workspace mount
+        if ! "$qvm_start"; then
+            die "Failed to start VM"
+        fi
+        
+        log_info "VM restarted with new workspace mounted"
+    fi
+    
+    # Ensure VM is running (if it wasn't running before)
     if ! is_vm_running; then
         log_info "VM not running, starting..."
         

bin/qvm-start

@@ -153,8 +153,8 @@ main() {
     log_info "Using SSH port: $ssh_port"
     
     # Get memory and CPU settings from environment or use defaults
-    local memory="${QVM_MEMORY:-8G}"
-    local cpus="${QVM_CPUS:-4}"
+    local memory="${QVM_MEMORY:-40G}"
+    local cpus="${QVM_CPUS:-30}"
     log_info "VM resources: ${memory} memory, ${cpus} CPUs"
     
     # Build QEMU command