Add env var fallback for KiBot text variables

- rev/rev_pcb: Use KIBOT_VAR_rev if set, else git describe
- name: Use KIBOT_VAR_name if set, else extract from filename

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

configs/panel.kibot.yaml

@@ -4,9 +4,9 @@ kibot:
 
 import:
   - file: default.kibot.yaml
-    outputs: [JLCPCB_compress, neo_position, print_pcb, step, interactive_bom]
+    outputs: [JLCPCB_gerbers, JLCPCB_drill, JLCPCB_compress, neo_position, print_pcb, panel_step, interactive_bom]
 
 preflight:
   erc: false
   update_xml: false
-  drc: true
+  drc: false