fix: replace GitLab-only CI variables

CI_PROJECT_DIR and CI_COMMIT_SHORT_SHA do not exist on Gitea Actions.
user_templates was resolving to /.gitlab/templates, and the rev
fallback echoed an empty string. Use WORKDIR (already exported into
the KiBot container) and GITHUB_SHA.

configs/default.kibot.yaml

@@ -11,9 +11,9 @@ preflight:
   # drc: true
   set_text_variables:
     - name: 'rev'
-      command: 'if [ -n "$KIBOT_VAR_rev" ]; then echo $KIBOT_VAR_rev; else git describe --tags 2>/dev/null || echo $CI_COMMIT_SHORT_SHA; fi'
+      command: 'if [ -n "$KIBOT_VAR_rev" ]; then echo $KIBOT_VAR_rev; else git describe --tags 2>/dev/null || echo ${GITHUB_SHA:0:8}; fi'
     - name: 'rev_pcb'
-      command: 'if [ -n "$KIBOT_VAR_rev_pcb" ]; then echo $KIBOT_VAR_rev_pcb; else git describe --tags 2>/dev/null || echo $CI_COMMIT_SHORT_SHA; fi'
+      command: 'if [ -n "$KIBOT_VAR_rev_pcb" ]; then echo $KIBOT_VAR_rev_pcb; else git describe --tags 2>/dev/null || echo ${GITHUB_SHA:0:8}; fi'
     - name: 'date'
       expand_kibot_patterns: true
       text: '%D'
@@ -33,7 +33,7 @@ preflight:
 
 global:
   environment:
-    user_templates: "${CI_PROJECT_DIR}/.gitlab/templates"
+    user_templates: "${WORKDIR}/.gitlab/templates"
   restore_project: true
 
 outputs:
@@ -341,4 +341,4 @@ groups:
 definitions:
   _KIBOT_POS_ENABLED: false
   _KIBOT_BOM_ENABLED: false
-  _KIBOT_MANF_DIR_COMP: "."
+  _KIBOT_MANF_DIR_COMP: "."