feat(skills): auto-detect XML format version from Configuration.xml

When working with existing configs dumped from newer platforms (8.3.27+),
XML files use version="2.20" instead of "2.17". Skills now detect the
version from the nearest Configuration.xml walking up the directory tree,
falling back to "2.17" if not found. This prevents format version mismatch
errors during LoadConfigFromFiles.

Updated skills (11): meta-compile, form-compile, form-add, template-add,
cfe-borrow, epf-add-form, help-add, role-compile, subsystem-compile,
interface-edit. Also fixed form-validate to accept version 2.20.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/skills/interface-edit/scripts/interface-edit.py

@@ -1,14 +1,31 @@
 #!/usr/bin/env python3
-# interface-edit v1.2 — Edit 1C CommandInterface.xml
+# interface-edit v1.3 — Edit 1C CommandInterface.xml
 # Source: https://github.com/Nikolay-Shirokov/cc-1c-skills
 
 import argparse
 import json
 import os
+import re
 import subprocess
 import sys
 from lxml import etree
 
+def detect_format_version(d):
+    while d:
+        cfg_path = os.path.join(d, "Configuration.xml")
+        if os.path.isfile(cfg_path):
+            with open(cfg_path, "r", encoding="utf-8-sig") as f:
+                head = f.read(2000)
+            m = re.search(r'<MetaDataObject[^>]+version="(\d+\.\d+)"', head)
+            if m:
+                return m.group(1)
+        parent = os.path.dirname(d)
+        if parent == d:
+            break
+        d = parent
+    return "2.17"
+
+
 CI_NS = "http://v8.1c.ru/8.3/xcf/extrnprops"
 XR_NS = "http://v8.1c.ru/8.3/xcf/readable"
 XSI_NS = "http://www.w3.org/2001/XMLSchema-instance"
@@ -181,6 +198,10 @@ def main():
         print("Either -DefinitionFile or -Operation is required", file=sys.stderr)
         sys.exit(1)
 
+    # --- Detect format version ---
+    ci_dir = os.path.dirname(os.path.abspath(args.CIPath))
+    format_version = detect_format_version(ci_dir)
+
     # --- Resolve path ---
     ci_path = args.CIPath
     if not os.path.isabs(ci_path):
@@ -199,7 +220,7 @@ def main():
                 f'\txmlns:xr="{XR_NS}"\n'
                 f'\txmlns:xs="{XS_NS}"\n'
                 f'\txmlns:xsi="{XSI_NS}"\n'
-                f'\tversion="2.17">\n'
+                f'\tversion="{format_version}">\n'
                 f'</CommandInterface>'
             )
             with open(ci_path, "w", encoding="utf-8-sig") as fh: