fix: stop guessing a kind for composite Divi attribute paths

Review fix round 1 on the lit/divi-catalog task:
- AttrPathIndex::collectKinds() no longer records a kind from a
  component.type === "group" node (a composite of several sub-kinds,
  e.g. button.innerContent = text + link + target), and kinds() now
  drops any attrName with more than one distinct candidate kind
  instead of last-write-wins (e.g. imageIcon.innerContent had onoff +
  icon + image sub-fields sharing one attrName). Both previously
  produced a wrong-but-present kind, which is more dangerous for 2b's
  sanitization routing than "unknown". Verified against the committed
  blurb/button/fullwidth-header fixture entries and live against the
  full 100-module catalog.
- AttrPathIndex::fromDefaults() now builds on AttrMap::flatten()
  instead of a parallel walker.
- ModuleCatalog::shortName() replaces the duplicated
  substr($name, strlen('divi/')) in DiviCatalogAbility.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01At3V6SjwbMe6eMzVGW3Hs7

src/Integrations/Divi/Schema/AttrPathIndex.php

@@ -93,7 +93,7 @@ final class AttrPathIndex
             self::attrNames($settings, $paths);
         }
 
-        self::fromDefaults($defaults, '', $paths);
+        self::fromDefaults($defaults, $paths);
         $list = array_map('strval', array_keys($paths));
         sort($list);
 
@@ -102,18 +102,30 @@ final class AttrPathIndex
 
     /**
      * Known attribute path => value kind (text/richtext/code/url/image/color/enum/onoff/number/
-     * list/icon), wherever Divi's metadata names an unambiguous field component for the path.
-     * Not every known path (see paths()) resolves to a kind; callers default to "unknown".
+     * list/icon), wherever Divi's metadata names exactly one unambiguous field component for the
+     * path. A path is left out (callers default to "unknown") when Divi's own component is a
+     * "group" (a composite of several sub-kinds, e.g. button.innerContent = text + link + target)
+     * or when several distinct "field" components share the same attrName with different kinds
+     * (e.g. imageIcon.innerContent = onoff useIcon + icon icon + image src) – a wrong-but-present
+     * kind would be more dangerous for 2b's sanitization routing than an honest "unknown".
      *
      * @param array<string, mixed> $attributes Metadata "attributes" of one module.
      * @return array<string, string>
      */
     public static function kinds(array $attributes): array
     {
-        $kinds = ['module.meta.adminLabel' => 'text'];
+        $candidates = [];
         foreach ($attributes as $definition) {
             $settings = is_array($definition['settings'] ?? null) ? $definition['settings'] : [];
-            self::collectKinds($settings, $kinds);
+            self::collectKinds($settings, $candidates);
+        }
+
+        $kinds = ['module.meta.adminLabel' => 'text'];
+        foreach ($candidates as $attrName => $found) {
+            $unique = array_unique($found);
+            if (count($unique) === 1) {
+                $kinds[$attrName] = $unique[0];
+            }
         }
 
         return $kinds;
@@ -170,46 +182,39 @@ final class AttrPathIndex
     }
 
     /**
+     * Collects every (attrName => kind) candidate found, without yet resolving conflicts – a
+     * "group" component (a composite of several sub-kinds) never contributes a candidate.
+     *
      * @param array<array-key, mixed>    $node
-     * @param array<string, string>   $kinds
+     * @param array<string, list<string>> $candidates
      */
-    private static function collectKinds(array $node, array &$kinds): void
+    private static function collectKinds(array $node, array &$candidates): void
     {
         $attrName = $node['attrName'] ?? null;
-        $componentName = $node['component']['name'] ?? null;
+        $component = is_array($node['component'] ?? null) ? $node['component'] : [];
+        $componentName = $component['name'] ?? null;
         if (
             is_string($attrName)
             && preg_match(self::ATTR_NAME_PATTERN, $attrName)
+            && ($component['type'] ?? null) === 'field'
             && is_string($componentName)
             && isset(self::COMPONENT_KINDS[$componentName])
         ) {
-            $kinds[$attrName] = self::COMPONENT_KINDS[$componentName];
+            $candidates[$attrName][] = self::COMPONENT_KINDS[$componentName];
         }
 
         foreach ($node as $value) {
             if (is_array($value)) {
-                self::collectKinds($value, $kinds);
+                self::collectKinds($value, $candidates);
             }
         }
     }
 
-    /**
-     * @param array<array-key, mixed> $attrs
-     * @param array<string, bool>     $paths
-     */
-    private static function fromDefaults(array $attrs, string $prefix, array &$paths): void
+    /** @param array<string, mixed> $attrs */
+    private static function fromDefaults(array $attrs, array &$paths): void
     {
-        foreach ($attrs as $key => $value) {
-            if ($prefix === '' && in_array($key, AttrMap::META_KEYS, true)) {
-                continue;
-            }
-
-            $path = $prefix === '' ? (string) $key : $prefix . '.' . $key;
-            if (AttrMap::isBreakpointMap($value)) {
+        foreach (array_keys(AttrMap::flatten($attrs)) as $path) {
             $paths[$path] = true;
-            } elseif (is_array($value)) {
-                self::fromDefaults($value, $path, $paths);
-            }
         }
     }
 }

src/Integrations/Divi/Schema/DiviCatalogAbility.php

@@ -119,7 +119,8 @@ final class DiviCatalogAbility implements Ability
         if (! is_string($input['module'] ?? null) || $input['module'] === '') {
             $modules = [];
             foreach ($catalog->summary() as $module) {
-                $modules[] = $module + ['shortform' => ShortformMap::has(substr($module['name'], strlen('divi/')))];
+                $shortName = ModuleCatalog::shortName($module['name']);
+                $modules[] = $module + ['shortform' => ShortformMap::has($shortName)];
             }
 
             return ['modules' => $modules, 'notes' => $notes];
@@ -133,7 +134,7 @@ final class DiviCatalogAbility implements Ability
             );
         }
 
-        $short = substr($name, strlen('divi/'));
+        $short = ModuleCatalog::shortName($name);
         $item = ShortformMap::childType($short);
 
         return [

src/Integrations/Divi/Schema/ModuleCatalog.php

@@ -46,6 +46,12 @@ final class ModuleCatalog
         return str_contains($type, '/') ? $type : 'divi/' . $type;
     }
 
+    /** "divi/button" → "button" (inverse of normalize(), for ShortformMap's short names). */
+    public static function shortName(string $name): string
+    {
+        return str_starts_with($name, 'divi/') ? substr($name, strlen('divi/')) : $name;
+    }
+
     public function has(string $name): bool
     {
         return isset($this->modules[$name]);

tests/Unit/Integrations/Divi/Schema/DiviCatalogAbilityTest.php

@@ -54,8 +54,10 @@ final class DiviCatalogAbilityTest extends TestCase
     {
         $button = $this->ability()->execute(['module' => 'divi/button'])['module'];
 
-        self::assertSame('url', $button['path_kinds']['button.innerContent']);
+        self::assertSame('text', $button['path_kinds']['module.meta.adminLabel']);
         self::assertArrayNotHasKey('no.such.path', $button['path_kinds']);
+        // Composite ("group") paths are left out rather than guessing a single kind.
+        self::assertArrayNotHasKey('button.innerContent', $button['path_kinds']);
     }
 
     public function testUnknownModuleAndPermission(): void

tests/Unit/Integrations/Divi/Schema/ModuleCatalogTest.php

@@ -136,12 +136,13 @@ final class ModuleCatalogTest extends TestCase
         self::assertSame('richtext', $catalog->pathKind('divi/text', 'content.innerContent'));
         self::assertSame('text', $catalog->pathKind('divi/heading', 'title.innerContent'));
         self::assertSame('code', $catalog->pathKind('divi/code', 'content.innerContent'));
-        self::assertSame('url', $catalog->pathKind('divi/button', 'button.innerContent'));
         self::assertSame('text', $catalog->pathKind('divi/button', 'module.meta.adminLabel'));
         // Structural/style groups (fonts, backgrounds, …) carry no single scalar component in
         // Divi's metadata; 2b falls back to key-name routing for them (spec §5.6, ruling R3).
         self::assertSame('unknown', $catalog->pathKind('divi/button', 'button.decoration.background'));
         self::assertSame('unknown', $catalog->pathKind('divi/button', 'no.such.path'));
+        // divi/image has no explicit attrName for its innerContent sub-fields at all.
+        self::assertSame('unknown', $catalog->pathKind('divi/image', 'image.innerContent'));
 
         // Every kind in the module's kinds() map is a string, keyed by a known attribute path.
         $paths = $catalog->paths('divi/heading');
@@ -150,4 +151,20 @@ final class ModuleCatalogTest extends TestCase
             self::assertContains($path, $paths);
         }
     }
+
+    public function testLeavesCompositeAttributePathsUnknownRatherThanGuessing(): void
+    {
+        $catalog = self::sampleCatalog();
+
+        // button.innerContent's only attrName-annotated node is the "link" sub-group itself
+        // (component.type "group": link text + linkUrl + linkTarget) – not a single scalar kind.
+        self::assertSame('unknown', $catalog->pathKind('divi/button', 'button.innerContent'));
+
+        // imageIcon.innerContent carries three "field" components under the same attrName with
+        // different kinds (useIcon: onoff, icon: icon, src: image) – a genuine conflict.
+        self::assertSame('unknown', $catalog->pathKind('divi/blurb', 'imageIcon.innerContent'));
+
+        // fullwidth-header's scrollDown.decoration.icon is the same pattern (onoff/icon/color/number).
+        self::assertSame('unknown', $catalog->pathKind('divi/fullwidth-header', 'scrollDown.decoration.icon'));
+    }
 }