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/meta-compile/scripts/meta-compile.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# meta-compile v1.6 — Compile 1C metadata object from JSON
+# meta-compile v1.7 — Compile 1C metadata object from JSON
 # Source: https://github.com/Nikolay-Shirokov/cc-1c-skills
 
 import argparse
@@ -2202,6 +2202,27 @@ def emit_addressing_attribute(indent, addr_def):
 
 xmlns_decl = 'xmlns="http://v8.1c.ru/8.3/MDClasses" xmlns:app="http://v8.1c.ru/8.2/managed-application/core" xmlns:cfg="http://v8.1c.ru/8.1/data/enterprise/current-config" xmlns:cmi="http://v8.1c.ru/8.2/managed-application/cmi" xmlns:ent="http://v8.1c.ru/8.1/data/enterprise" xmlns:lf="http://v8.1c.ru/8.2/managed-application/logform" xmlns:style="http://v8.1c.ru/8.1/data/ui/style" xmlns:sys="http://v8.1c.ru/8.1/data/ui/fonts/system" xmlns:v8="http://v8.1c.ru/8.1/data/core" xmlns:v8ui="http://v8.1c.ru/8.1/data/ui" xmlns:web="http://v8.1c.ru/8.1/data/ui/colors/web" xmlns:win="http://v8.1c.ru/8.1/data/ui/colors/windows" xmlns:xen="http://v8.1c.ru/8.3/xcf/enums" xmlns:xpr="http://v8.1c.ru/8.3/xcf/predef" xmlns:xr="http://v8.1c.ru/8.3/xcf/readable" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"'
 
+# ---------------------------------------------------------------------------
+# 14a. Detect format version from existing Configuration.xml
+# ---------------------------------------------------------------------------
+
+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"
+
+format_version = detect_format_version(output_dir)
+
 # ---------------------------------------------------------------------------
 # 15. Main assembler
 # ---------------------------------------------------------------------------
@@ -2209,7 +2230,7 @@ xmlns_decl = 'xmlns="http://v8.1c.ru/8.3/MDClasses" xmlns:app="http://v8.1c.ru/8
 obj_uuid = new_uuid()
 
 X('<?xml version="1.0" encoding="UTF-8"?>')
-X(f'<MetaDataObject {xmlns_decl} version="2.17">')
+X(f'<MetaDataObject {xmlns_decl} version="{format_version}">')
 X(f'\t<{obj_type} uuid="{obj_uuid}">')
 
 # InternalInfo
@@ -2529,7 +2550,7 @@ if obj_type == 'ExchangePlan':
     content_path = os.path.join(ext_dir, 'Content.xml')
     if not os.path.isfile(content_path):
         ensure_ext_dir()
-        content_xml = '<?xml version="1.0" encoding="UTF-8"?>\r\n<ExchangePlanContent xmlns="http://v8.1c.ru/8.3/xcf/extrnprops" xmlns:xr="http://v8.1c.ru/8.3/xcf/readable" version="2.17"/>\r\n'
+        content_xml = f'<?xml version="1.0" encoding="UTF-8"?>\r\n<ExchangePlanContent xmlns="http://v8.1c.ru/8.3/xcf/extrnprops" xmlns:xr="http://v8.1c.ru/8.3/xcf/readable" version="{format_version}"/>\r\n'
         write_utf8_bom(content_path, content_xml)
         modules_created.append(content_path)
 
@@ -2537,7 +2558,7 @@ if obj_type == 'BusinessProcess':
     flowchart_path = os.path.join(ext_dir, 'Flowchart.xml')
     if not os.path.isfile(flowchart_path):
         ensure_ext_dir()
-        flowchart_xml = '<?xml version="1.0" encoding="UTF-8"?>\r\n<Flowchart xmlns="http://v8.1c.ru/8.3/MDClasses" version="2.17"/>\r\n'
+        flowchart_xml = f'<?xml version="1.0" encoding="UTF-8"?>\r\n<Flowchart xmlns="http://v8.1c.ru/8.3/MDClasses" version="{format_version}"/>\r\n'
         write_utf8_bom(flowchart_path, flowchart_xml)
         modules_created.append(flowchart_path)