fix: chmod +x in genapkovl to fix permissions regardless of git filemode on VM

- genapkovl now explicitly chmod +x init.d/* and usr/local/bin/* after cp
- add bee-net-restart command (short name, no .sh) and /etc/profile.d/bee.sh for PATH
- udhcpc: add & to ensure non-blocking even when DHCP responds immediately
- motd: short commands without paths

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

iso/overlay-debug/etc/motd

@@ -9,12 +9,11 @@
   Hardware Audit LiveCD — DEBUG MODE
   Build: %%BUILD_INFO%%
 
-  Audit result:  /var/log/bee-audit.json
-  Audit log:     /var/log/bee-audit.log
-  Network log:   /var/log/bee-network.log
+  Logs:          /var/log/bee-audit.json  /var/log/bee-network.log
 
-  Re-run audit:  /usr/local/bin/audit --output stdout | less
-  Check package: which dmidecode smartctl nvme ipmitool lspci
+  Re-run audit:  audit --output stdout | less
+  Restart net:   bee-net-restart
+  Check tools:   which dmidecode smartctl nvme ipmitool lspci
 
   SSH access:    key auth (developers) or bee/eeb (password fallback)
 

iso/overlay-debug/etc/profile.d/bee.sh

@@ -0,0 +1 @@
+export PATH="$PATH:/usr/local/bin"