fix: TB dry runs hide uneditable live templates, off-switch despite draft (rulings Q20, Q21)

- ThemeBuilderAccess::editableLiveTemplates() shared by tb-list and the tb-assign/tb-activate dry runs;
  uneditable live templates only as a count (hidden_overlaps, hidden_live)
- tb-activate enabled:false works while the Theme Builder has a draft, with a warning
- possible_overlaps skips identical conditions; reattach records the previous enabled state;
  exclude_from must be a list; tb-activate live from the read-back

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tests/Unit/Integrations/Divi/ThemeBuilder/TemplateTest.php

@@ -129,4 +129,39 @@ final class TemplateTest extends TestCase
             'a static front page is a page'
         );
     }
+
+    /** Fix round 1: a condition the template shares exactly is in overlaps() only, never twice. */
+    public function testPossibleOverlapsSkipIdenticalConditions(): void
+    {
+        $other = ThemeBuilderFixtures::template(1070, [
+            'enabled' => true,
+            'title' => 'Seiten',
+            'use_on' => ['homepage', 'singular:post_type:page:all'],
+        ]);
+        $useOn = ['homepage', 'singular:post_type:page:id:1053'];
+
+        self::assertSame(['homepage'], Template::overlaps([$other], 1066, $useOn)[0]['conditions']);
+        self::assertSame(['singular:post_type:page:all'], Template::possibleOverlaps([$other], 1066, $useOn)[0]['conditions']);
+    }
+
+    /** Ruling Q21: overlapping templates the user may not edit only as a number. */
+    public function testOverlapDetailsCountHiddenTemplatesOnly(): void
+    {
+        $mine = ThemeBuilderFixtures::template(1070, ['enabled' => true, 'title' => 'Meine', 'use_on' => ['search']]);
+        $hiddenExact = ThemeBuilderFixtures::template(1071, ['enabled' => true, 'use_on' => ['search', 'homepage']]);
+        $hiddenPossible = ThemeBuilderFixtures::template(1072, ['enabled' => true, 'use_on' => ['singular:post_type:page:all']]);
+        $hiddenOther = ThemeBuilderFixtures::template(1073, ['enabled' => true, 'use_on' => ['404']]);
+
+        $details = Template::overlapDetails(
+            ['templates' => [$mine], 'hidden' => [$hiddenExact, $hiddenPossible, $hiddenOther]],
+            1066,
+            ['search', 'homepage']
+        );
+
+        self::assertSame([['id' => 1070, 'title' => 'Meine', 'conditions' => ['search']]], $details['overlaps']);
+        self::assertSame([], $details['possible_overlaps']);
+        self::assertSame(2, $details['hidden_overlaps']);
+        self::assertStringContainsString('ohne Berechtigung', Template::hiddenOverlapsNote(2));
+        self::assertSame('', Template::hiddenOverlapsNote(0));
+    }
 }