From 47ac43db98bc1abb31882e0b58005eb5e9135065 Mon Sep 17 00:00:00 2001
From: Chris Huber <chris.huber@automattic.com>
Date: Tue, 13 Oct 2026 09:37:23 -0400
Subject: [PATCH] fix(php-transformer): reproduce the captured disclosure
 runtime faithfully in native dialogs

- Carry aria-* and data-* ancestor bindings to the native dialog and replay
  them like the disclosure runtime (set or remove, closed state on load),
  through one shared attribute allowlist.
- Keep a projected captured dialog as a native dialog block instead of
  core/details, which cannot express Escape, aria-expanded or ancestor
  bindings.
- Verify the published digest on every runtime retirement path (navigation
  submenu, gallery helper, projected dialogs); a page carrying an
  unrecognized runtime body keeps that runtime and its wiring.
- Re-record the equivalence cases these changes affect and document them.
---
 .github/workflows/php-transformer.yml         |  2 +
 php-transformer/composer.json                 |  2 +
 .../docs/contracts/capture-evidence.md        | 87 +++++++++++------
 .../CapturedDialogProjector.php               | 92 +++++++++++-------
 .../Elements/CapturedDialogConverter.php      |  2 +-
 .../CapturedDialogBlockGenerator.php          | 86 +++++++++++++---
 .../HtmlToBlocks/Patterns/DetailsPattern.php  |  7 ++
 .../contract/capture-evidence-equivalence.php |  2 +-
 .../contract/captured-navigation-runtime.php  | 19 +++-
 .../tests/contract/head-script-retirement.php |  2 +-
 .../expected.json                             | 72 +++++++-------
 .../tests/fixtures/head-script-retirement.php |  3 +-
 ...pture-runtime-attribute-parity-browser.mjs | 75 ++++++++++++++
 .../unit/capture-runtime-attribute-parity.php | 97 +++++++++++++++++++
 .../tests/unit/captured-dialog-projector.php  | 13 ++-
 .../unit/captured-dialog-text-trigger.php     | 72 ++++++++++++++
 .../tests/unit/captured-gallery-contract.php  | 21 +++-
 .../navigation-button-dropdown-submenu.php    |  6 +-
 .../capture-evidence-equivalence/README.md    | 32 ++++++
 19 files changed, 564 insertions(+), 128 deletions(-)
 create mode 100644 php-transformer/tests/unit/capture-runtime-attribute-parity-browser.mjs
 create mode 100644 php-transformer/tests/unit/capture-runtime-attribute-parity.php
 create mode 100644 php-transformer/tests/unit/captured-dialog-text-trigger.php

diff --git a/.github/workflows/php-transformer.yml b/.github/workflows/php-transformer.yml
index 334e3b7db..999348c81 100644
--- a/.github/workflows/php-transformer.yml
+++ b/.github/workflows/php-transformer.yml
@@ -118,6 +118,8 @@ jobs:
         run: |
           php tests/unit/capture-runtime-ancestor-parity.php
           PLAYWRIGHT_MODULE="$PWD/tools/visual-parity/node_modules/playwright/index.mjs" node tests/unit/capture-runtime-ancestor-parity-browser.mjs
+          php tests/unit/capture-runtime-attribute-parity.php
+          PLAYWRIGHT_MODULE="$PWD/tools/visual-parity/node_modules/playwright/index.mjs" node tests/unit/capture-runtime-attribute-parity-browser.mjs
 
       - name: Verify native button default background neutralization
         working-directory: php-transformer
diff --git a/php-transformer/composer.json b/php-transformer/composer.json
index 64388f646..45c355016 100644
--- a/php-transformer/composer.json
+++ b/php-transformer/composer.json
@@ -188,6 +188,8 @@
       "php tests/unit/captured-dialog-dropdown-panel.php",
       "php tests/unit/scoped-mixed-dropdown.php",
       "php tests/unit/capture-runtime-ancestor-parity.php",
+      "php tests/unit/capture-runtime-attribute-parity.php",
+      "php tests/unit/captured-dialog-text-trigger.php",
       "php tests/unit/captured-selectable-set-projector.php",
       "php tests/unit/captured-collection-filter.php",
       "php tests/unit/captured-choice-group-projector.php",
diff --git a/php-transformer/docs/contracts/capture-evidence.md b/php-transformer/docs/contracts/capture-evidence.md
index 66de782a3..13dc62ed0 100644
--- a/php-transformer/docs/contracts/capture-evidence.md
+++ b/php-transformer/docs/contracts/capture-evidence.md
@@ -184,13 +184,37 @@ required (below).
 
 What the native replacement reproduces:
 
-- **Disclosure interpreter.** Opening and closing a dialog, and the ancestor
-  bindings in `data-blocks-engine-capture-dialog-ancestor-state`. A `class`
-  binding is replayed as tokens: tokens of the other state that the target
-  state lacks are removed, the target state's tokens are added, and every
-  other class on the ancestor is kept. The native dialog finds the ancestor by its tag and closed tokens.
-  `tests/unit/capture-runtime-ancestor-parity-browser.mjs` compares the two in
-  Chromium.
+- **Disclosure interpreter.** Opening and closing a dialog (including Escape
+  and the trigger's `aria-expanded`), and the ancestor bindings in
+  `data-blocks-engine-capture-dialog-ancestor-state`. A binding row may change
+  `class`, `style`, `hidden`, `aria-*` and `data-*` attributes: the set the
+  capture records and the interpreter replays. A `class` binding is replayed
+  as tokens: tokens of the other state that the target state lacks are
+  removed, the target state's tokens are added, and every other class on the
+  ancestor is kept; an emptied `class` whose recorded value is null is
+  removed. `hidden`, `aria-*` and `data-*` are set to the recorded value, or
+  removed when it is null, on open, on close and, as the interpreter does on
+  load, to their closed values when the page starts. The native dialog finds
+  the ancestor by its tag and closed class tokens, preferring the one whose
+  other recorded attributes hold their closed values.
+  `tests/unit/capture-runtime-ancestor-parity-browser.mjs` (class rows) and
+  `tests/unit/capture-runtime-attribute-parity-browser.mjs` (attribute-only
+  rows) compare the two in Chromium.
+
+  The replayable attributes are the shared allowlist
+  `CapturedDialogBlockGenerator::ANCESTOR_ATTRIBUTE_PATTERN`, applied by the
+  projector, the block converter and the view script alike. It never admits an
+  event handler (`on*`) or a URL-bearing attribute (`href`, `src`, ...): the
+  capture does not record them and the interpreter never replays them. It also
+  excludes Blocks Engine's own `data-blocks-engine-*` namespace, which holds
+  the native dialog's state and capture evidence rather than source state. A
+  row naming any other attribute is dropped.
+
+  A projected dialog stays a native dialog block even when its trigger has a
+  text label and its panel has the shape of a source aria disclosure.
+  `core/details` cannot close on Escape, keep `aria-expanded` or replay
+  ancestor bindings, so it is chosen only for disclosures that no capture
+  runtime drives, where it loses nothing.
 - **Gallery helper.** Frame galleries become native carousels. A src-swap
   gallery (`data-blocks-engine-capture-gallery-sequence` with
   `data-blocks-engine-capture-gallery-slot` images) becomes a native src-swap
@@ -198,25 +222,31 @@ What the native replacement reproduces:
   the sequence image at the current index plus the slot's offset, and removes
   the slot's `srcset`.
 
-**How Blocks Engine verifies them.** For each page with captured dialog
-scopes, `CapturedDialogProjector` scans every `<script>`:
-
-1. If the script carries the disclosure marker, it computes
-   `sha256(trim(textContent))`, where `trim` strips spaces, tabs, CR, LF, NUL
-   and vertical tab at both ends. The page can retire the interpreter only if
-   that digest equals the published disclosure digest.
-2. If the script carries the gallery marker, the page keeps that eligibility
-   only if the digest equals the published gallery digest.
-3. If the page has any other executable script (classic or module), apart from
-   the native-control helper (`data-blocks-engine-capture-native-control-runtime`),
-   the interpreter is not retired.
-
-With a matching interpreter and every trigger/panel binding proven local and
-bounded, the scoped disclosures become native dialog blocks and the
-interpreter is retired with a recorded replacement. Any mismatch leaves the
-capture's script and markup in place. That page then keeps working through
-the capture's own runtime and loses no content; it just gets no native
-replacement.
+**How Blocks Engine verifies them.** A script is a recognized runtime when
+it carries a marker attribute and `sha256(trim(textContent))` equals the
+published digest for that marker, where `trim` strips spaces, tabs, CR, LF,
+NUL and vertical tab at both ends
+(`CapturedDialogProjector::isRecognizedRuntimeScript()`). Every retirement
+path uses that check: native dialogs projected from captured interactions,
+wired dropdowns in a document scope, navigation submenus (with or without an
+interaction report) and native galleries.
+
+1. A page that carries a marked script whose body is not recognized keeps
+   that runtime and the wiring it drives: Blocks Engine projects no native
+   dialog, gallery or submenu replacement on it and retires nothing.
+2. Otherwise only recognized scripts are retired, each with a recorded
+   replacement proof (`native_runtime_replacements`, carrying the body
+   digest).
+3. Wired dropdowns in a declared document scope additionally require the
+   recognized interpreter itself, and no other executable script (classic or
+   module) apart from the native-control helper
+   (`data-blocks-engine-capture-native-control-runtime`).
+
+With a recognized interpreter and every trigger/panel binding proven local and
+bounded, the disclosures become native dialog blocks and the interpreter is
+retired with a recorded replacement. Any mismatch leaves the capture's script
+and markup in place. That page then keeps working through the capture's own
+runtime and loses no content; it just gets no native replacement.
 
 To check a body, run `php -r 'echo hash("sha256", trim(file_get_contents($argv[1])));' <file>`.
 `tests/contract/capture-evidence-vocabulary.php` holds the published
@@ -245,5 +275,6 @@ call the test suite made with the previous producer-specific names (a corpus
 harvested from the last commit before the move), renamed by the published
 rule, and requires byte-identical compile results, WordPress site plans,
 projected files and exceptions from the pre-move source with the same rule
-applied. See `tools/capture-evidence-equivalence/README.md` for how the
-corpus and expectations were produced and how to regenerate them.
+applied, except for the deliberate fidelity changes listed in
+`tools/capture-evidence-equivalence/README.md`. That file also describes how
+the corpus and expectations were produced and how to regenerate them.
diff --git a/php-transformer/src/ArtifactCompiler/CapturedDialogProjector.php b/php-transformer/src/ArtifactCompiler/CapturedDialogProjector.php
index ce7aacb2c..e4e1d1f03 100644
--- a/php-transformer/src/ArtifactCompiler/CapturedDialogProjector.php
+++ b/php-transformer/src/ArtifactCompiler/CapturedDialogProjector.php
@@ -4,6 +4,7 @@
 namespace Automattic\BlocksEngine\PhpTransformer\ArtifactCompiler;
 
 use Automattic\BlocksEngine\PhpTransformer\Contract\CaptureEvidence;
+use Automattic\BlocksEngine\PhpTransformer\HtmlToBlocks\Generators\CapturedDialogBlockGenerator;
 use Automattic\BlocksEngine\PhpTransformer\HtmlToBlocks\Patterns\NavigationPattern;
 use Automattic\BlocksEngine\PhpTransformer\HtmlToBlocks\Support\SourceDom;
 use DOMDocument;
@@ -17,6 +18,11 @@ final class CapturedDialogProjector
     private const MAX_PAGES = 128;
     private const MAX_STATES_PER_PAGE = 8;
     private const MAX_DIALOG_BYTES = 65536;
+    /** Capture runtime marker => sha256 of its published, trimmed body. */
+    private const RECOGNIZED_RUNTIMES = array(
+        CaptureEvidence::DISCLOSURE_RUNTIME => CaptureEvidence::DISCLOSURE_RUNTIME_SHA256,
+        CaptureEvidence::GALLERY_RUNTIME => CaptureEvidence::GALLERY_RUNTIME_SHA256,
+    );
 
 
     /** @var list<DOMElement> Panels proven by the existing complete gallery contract. */
@@ -154,6 +160,12 @@ private function projectPage(string $html, array $states, string $sourcePath): a
             return array('html' => $html, 'diagnostics' => array($this->diagnostic('captured_interaction_source_invalid', 'warning', 'Captured dialogs were not projected because the source HTML could not be parsed.', array('source_path' => $sourcePath))), 'projected_count' => 0, 'retired_scripts' => array(), 'script_bindings' => null);
         }
 
+        // Native replacement retires the capture runtime that drives this
+        // page's wiring. A runtime body Blocks Engine does not recognize keeps
+        // running, so it keeps the wiring it drives too.
+        if ($this->hasUnrecognizedRuntime($document)) {
+            return array('html' => $html, 'diagnostics' => array(), 'projected_count' => 0, 'retired_scripts' => array(), 'script_bindings' => null);
+        }
         $scriptBindings = new ScriptOccurrenceBindings($document);
         $diagnostics = array();
         $this->nativeGalleryPanels = array();
@@ -240,12 +252,7 @@ private function projectPage(string $html, array $states, string $sourcePath): a
         }
         $retired = array();
         if ($galleryCount > 0) {
-            foreach (iterator_to_array($document->getElementsByTagName('script')) as $script) {
-                if (!$script instanceof DOMElement || !$script->hasAttribute(CaptureEvidence::GALLERY_RUNTIME)) continue;
-                $body = trim($script->textContent ?? '');
-                if ('' !== $body) $retired[] = array('body' => $body, 'attribute' => CaptureEvidence::GALLERY_RUNTIME, 'reason' => 'native_carousel_and_dialog_replace_capture_gallery');
-                $script->parentNode?->removeChild($script);
-            }
+            $retired = $this->retireRecognizedRuntime($document, CaptureEvidence::GALLERY_RUNTIME, 'native_carousel_and_dialog_replace_capture_gallery');
         }
         if ($this->hasNavigationOwnedDialogTrigger($document)) {
             $this->consumeNavigationOwnedCloseHelpers($document);
@@ -253,7 +260,7 @@ private function projectPage(string $html, array $states, string $sourcePath): a
         }
         if (($projected > 0 || $handledNavigationDropdown) && !$this->hasDialogCloseHelper($document) && $this->everyDialogTriggerIsBound($document)) {
             $reason = 0 < $projected ? 'native_dialog_close_replaces_capture_close_helper' : 'native_navigation_submenu_replaces_capture_disclosure';
-            $retired = array_merge($retired, $this->removeDisclosureRuntime($document, $reason));
+            $retired = array_merge($retired, $this->retireRecognizedRuntime($document, CaptureEvidence::DISCLOSURE_RUNTIME, $reason));
         }
 
         $output = $document->saveHTML();
@@ -420,8 +427,9 @@ private function triggerDocumentScope(DOMDocument $document, array $triggers): D
     /**
      * Source-proven open/closed changes the producer recorded on a trigger's
      * ancestors (for example a header that paints itself only while its menu
-     * is open). Keep a bounded, attribute-limited copy so the dialog can replay
-     * them; anything outside that shape is dropped rather than guessed.
+     * is open, or a row that switches `data-section-theme`). Keep the bounded
+     * copy the native dialog can replay; anything outside that shape is
+     * dropped rather than guessed.
      *
      * @param array<int, DOMElement> $triggers
      * @return array<int, array{tag:string, closed:array<string, string|null>, opened:array<string, string|null>}>
@@ -429,22 +437,7 @@ private function triggerDocumentScope(DOMDocument $document, array $triggers): D
     private function triggerAncestorState(array $triggers): array
     {
         foreach ($triggers as $trigger) {
-            $bindings = json_decode($trigger->getAttribute(CaptureEvidence::DIALOG_ANCESTOR_STATE), true);
-            if (! is_array($bindings) || array() === $bindings || count($bindings) > 8) continue;
-            $state = array();
-            foreach ($bindings as $binding) {
-                $tag = is_array($binding) ? strtolower((string) ($binding['tag'] ?? '')) : '';
-                if (1 !== preg_match('/^[a-z][a-z0-9-]{0,31}$/', $tag) || ! is_array($binding['closed'] ?? null) || ! is_array($binding['opened'] ?? null)) continue 2;
-                $sides = array();
-                foreach (array('closed', 'opened') as $side) {
-                    foreach ($binding[$side] as $name => $value) {
-                        if (! in_array($name, array('class', 'style', 'hidden'), true) || (null !== $value && ! is_string($value)) || strlen((string) $value) > 2048) continue 3;
-                        $sides[$side][$name] = $value;
-                    }
-                }
-                if (array_keys($sides['closed'] ?? array()) !== array_keys($sides['opened'] ?? array()) || array() === ($sides['closed'] ?? array())) continue 2;
-                $state[] = array('tag' => $tag, 'closed' => $sides['closed'], 'opened' => $sides['opened']);
-            }
+            $state = CapturedDialogBlockGenerator::ancestorState(json_decode($trigger->getAttribute(CaptureEvidence::DIALOG_ANCESTOR_STATE), true));
             if (array() !== $state) return $state;
         }
         return array();
@@ -558,12 +551,10 @@ private function canReplaceScopedDisclosure(DOMDocument $document, array $scopes
         $known = false;
         foreach ($document->getElementsByTagName('script') as $script) {
             if ($script->hasAttribute(CaptureEvidence::DISCLOSURE_RUNTIME)) {
-                // A marker alone does not establish ownership of an arbitrary source
-                // script; the body must be the recognized capture interpreter.
-                if (CaptureEvidence::DISCLOSURE_RUNTIME_SHA256 !== hash('sha256', trim($script->textContent ?? ''))) return false;
+                if (!self::isRecognizedRuntimeScript($script, CaptureEvidence::DISCLOSURE_RUNTIME)) return false;
                 $known = true;
             } elseif ($script->hasAttribute(CaptureEvidence::GALLERY_RUNTIME)) {
-                if (CaptureEvidence::GALLERY_RUNTIME_SHA256 !== hash('sha256', trim($script->textContent ?? ''))) return false;
+                if (!self::isRecognizedRuntimeScript($script, CaptureEvidence::GALLERY_RUNTIME)) return false;
             } elseif (!$script->hasAttribute(CaptureEvidence::NATIVE_CONTROL_RUNTIME)
                 && \Automattic\BlocksEngine\PhpTransformer\WordPressSitePlan\WordPressSitePlan::isExecutableScriptType($script->getAttribute('type'), 'module' === $script->getAttribute('type'))
             ) {
@@ -664,19 +655,48 @@ private function consumeNavigationOwnedCloseHelpers(DOMDocument $document): void
         }
     }
 
-    /** @return array<int, array{body:string, attribute:string, reason:string}> */
-    private function removeDisclosureRuntime(DOMDocument $document, string $reason): array
+    /**
+     * Remove the capture runtime scripts carrying `$marker` that Blocks Engine
+     * recognizes. Every retirement path goes through here; a marked script with
+     * any other body stays with the page.
+     *
+     * @return array<int, array{body:string, attribute:string, reason:string}>
+     */
+    private function retireRecognizedRuntime(DOMDocument $document, string $marker, string $reason): array
     {
         $retired = array();
         foreach (iterator_to_array($document->getElementsByTagName('script')) as $script) {
-            if (!$script instanceof DOMElement || !$script->hasAttribute(CaptureEvidence::DISCLOSURE_RUNTIME)) continue;
-            $body = trim($script->textContent ?? '');
-            if ('' !== $body) $retired[] = array('body' => $body, 'attribute' => CaptureEvidence::DISCLOSURE_RUNTIME, 'reason' => $reason);
+            if (!$script instanceof DOMElement || !self::isRecognizedRuntimeScript($script, $marker)) continue;
+            $retired[] = array('body' => trim($script->textContent ?? ''), 'attribute' => $marker, 'reason' => $reason);
             $script->parentNode?->removeChild($script);
         }
         return $retired;
     }
 
+    /**
+     * A capture runtime Blocks Engine may replace: a script carrying `$marker`
+     * whose trimmed body is the published body for that marker
+     * (docs/contracts/capture-evidence.md, "Runtime scripts"). The marker alone
+     * does not establish ownership of an arbitrary source script.
+     */
+    private static function isRecognizedRuntimeScript(DOMElement $script, string $marker): bool
+    {
+        $digest = self::RECOGNIZED_RUNTIMES[$marker] ?? null;
+        return null !== $digest && 'script' === strtolower($script->tagName) && $script->hasAttribute($marker)
+            && $digest === hash('sha256', trim($script->textContent ?? ''));
+    }
+
+    /** Whether a page carries a capture runtime marker whose body is not the published one. */
+    private function hasUnrecognizedRuntime(DOMDocument $document): bool
+    {
+        foreach ($document->getElementsByTagName('script') as $script) {
+            foreach (array_keys(self::RECOGNIZED_RUNTIMES) as $marker) {
+                if ($script instanceof DOMElement && $script->hasAttribute($marker) && !self::isRecognizedRuntimeScript($script, $marker)) return true;
+            }
+        }
+        return false;
+    }
+
     /**
      * Navigation ownership is proven from in-place controls, independently of
      * interaction probing. Non-navigation triggers still prevent retirement.
@@ -697,11 +717,11 @@ private function retireOwnedDisclosureWithoutProjection(array $files, array $dia
             $loaded = $document->loadHTML('<?xml encoding="UTF-8">' . $content, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD | LIBXML_NONET);
             libxml_clear_errors();
             libxml_use_internal_errors($previous);
-            if (!$loaded || !$this->hasNavigationOwnedDialogTrigger($document) || !$this->everyDialogTriggerIsBound($document)) continue;
+            if (!$loaded || $this->hasUnrecognizedRuntime($document) || !$this->hasNavigationOwnedDialogTrigger($document) || !$this->everyDialogTriggerIsBound($document)) continue;
             $scriptBindings = new ScriptOccurrenceBindings($document);
             $this->consumeNavigationOwnedCloseHelpers($document);
             if ($this->hasDialogCloseHelper($document)) continue;
-            $pageRetired = $this->removeDisclosureRuntime($document, 'native_navigation_submenu_replaces_capture_disclosure');
+            $pageRetired = $this->retireRecognizedRuntime($document, CaptureEvidence::DISCLOSURE_RUNTIME, 'native_navigation_submenu_replaces_capture_disclosure');
             if (array() === $pageRetired) continue;
             $html = $document->saveHTML();
             $html = is_string($html) ? preg_replace('/^<\?xml encoding="UTF-8">/i', '', $html) : null;
diff --git a/php-transformer/src/HtmlToBlocks/Elements/CapturedDialogConverter.php b/php-transformer/src/HtmlToBlocks/Elements/CapturedDialogConverter.php
index cbb005e72..ce966b31b 100644
--- a/php-transformer/src/HtmlToBlocks/Elements/CapturedDialogConverter.php
+++ b/php-transformer/src/HtmlToBlocks/Elements/CapturedDialogConverter.php
@@ -79,7 +79,7 @@ public function block(DOMElement $element, array &$fallbacks): array
             'placement' => in_array(SourceDom::attr($element, 'data-blocks-engine-placement'), array('in-place', 'under-header', 'source'), true) ? SourceDom::attr($element, 'data-blocks-engine-placement') : '',
             'addCloseButton' => 'true' === SourceDom::attr($element, 'data-blocks-engine-add-close'),
             'gallerySelection' => json_decode(SourceDom::attr($element, 'data-blocks-engine-gallery-selection'), true) ?: array(),
-            'ancestorState' => json_decode(SourceDom::attr($element, 'data-blocks-engine-ancestor-state'), true) ?: array(),
+            'ancestorState' => CapturedDialogBlockGenerator::ancestorState(json_decode(SourceDom::attr($element, 'data-blocks-engine-ancestor-state'), true)),
         ), static fn(mixed $value): bool => false !== $value && '' !== $value && array() !== $value);
         $children = ($this->convertChildren)($element, $fallbacks);
         $escape = static fn(string $value): string => htmlspecialchars($value, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
diff --git a/php-transformer/src/HtmlToBlocks/Generators/CapturedDialogBlockGenerator.php b/php-transformer/src/HtmlToBlocks/Generators/CapturedDialogBlockGenerator.php
index fff7f7533..29d8a5cd4 100644
--- a/php-transformer/src/HtmlToBlocks/Generators/CapturedDialogBlockGenerator.php
+++ b/php-transformer/src/HtmlToBlocks/Generators/CapturedDialogBlockGenerator.php
@@ -10,6 +10,48 @@ final class CapturedDialogBlockGenerator
 {
     public const LOCAL_NAME = 'captured-dialog';
 
+    /**
+     * Ancestor attributes a captured-dialog binding may change: the attribute
+     * set the capture records and its disclosure runtime replays (`class`,
+     * `style`, `hidden`, `aria-*`, `data-*`). Event handlers and URL-bearing
+     * attributes are never recorded, so they are never replayed. Blocks
+     * Engine's own `data-blocks-engine-*` namespace is excluded: it carries the
+     * native dialog's own state and capture evidence, never a source binding.
+     * Shared by the projector, the converter and the view script.
+     */
+    public const ANCESTOR_ATTRIBUTE_PATTERN = '^(?:class|style|hidden|aria-[a-z0-9-]+|data-(?!blocks-engine-)[a-z0-9_.:-]+)$';
+    private const MAX_ANCESTOR_ROWS = 8;
+    private const MAX_ANCESTOR_ATTRIBUTES = 32;
+    private const MAX_ANCESTOR_VALUE_BYTES = 2048;
+
+    /**
+     * The replayable rows of a captured ancestor binding. A row keeps its tag
+     * and its closed/opened values for the same allowed attributes. A row with
+     * any other attribute is dropped; a malformed binding yields no rows.
+     *
+     * @return array<int, array{tag:string, closed:array<string, string|null>, opened:array<string, string|null>}>
+     */
+    public static function ancestorState(mixed $bindings): array
+    {
+        if (! is_array($bindings) || ! array_is_list($bindings) || count($bindings) > self::MAX_ANCESTOR_ROWS) return array();
+        $state = array();
+        foreach ($bindings as $binding) {
+            $tag = is_array($binding) ? strtolower((string) ($binding['tag'] ?? '')) : '';
+            if (1 !== preg_match('/^[a-z][a-z0-9-]{0,31}$/', $tag) || ! is_array($binding['closed'] ?? null) || ! is_array($binding['opened'] ?? null)) return array();
+            $sides = array();
+            foreach (array('closed', 'opened') as $side) {
+                if (count($binding[$side]) > self::MAX_ANCESTOR_ATTRIBUTES) continue 2;
+                foreach ($binding[$side] as $name => $value) {
+                    if (! is_string($name) || 1 !== preg_match('/' . self::ANCESTOR_ATTRIBUTE_PATTERN . '/', $name) || (null !== $value && ! is_string($value)) || strlen((string) $value) > self::MAX_ANCESTOR_VALUE_BYTES) continue 3;
+                    $sides[$side][$name] = $value;
+                }
+            }
+            if (array_keys($sides['closed'] ?? array()) !== array_keys($sides['opened'] ?? array()) || array() === ($sides['closed'] ?? array())) return array();
+            $state[] = array('tag' => $tag, 'closed' => $sides['closed'], 'opened' => $sides['opened']);
+        }
+        return $state;
+    }
+
     /** @return array<string, mixed> */
     public function definition(string $blockName): array
     {
@@ -48,32 +90,43 @@ function dialogProps( attrs ) {
         $view = <<<'JS'
 ( function() {
     // Replay the source-proven ancestor changes recorded for this control (for
-    // example a header that paints itself only while its menu is open). The
-    // ancestor is the nearest one with the recorded tag in its closed state.
+    // example a header that paints itself only while its menu is open), as the
+    // capture's disclosure runtime does.
+    var ATTRIBUTE = new RegExp( '__ANCESTOR_ATTRIBUTE_PATTERN__' );
     function tokens( value ) { return ( value || '' ).split( /\s+/ ).filter( Boolean ); }
+    // Attributes other than class and style are set to the recorded value, or
+    // removed when the recorded value is null.
+    function attributeNames( values ) { return Object.keys( values ).filter( function( name ) { return 'class' !== name && 'style' !== name && ATTRIBUTE.test( name ); } ); }
+    function replayAttributes( node, to ) { attributeNames( to ).forEach( function( name ) { if ( null === to[ name ] ) node.removeAttribute( name ); else node.setAttribute( name, to[ name ] ); } ); }
     function declarations( value ) {
         var out = {};
         ( value || '' ).split( ';' ).forEach( function( part ) { var at = part.indexOf( ':' ); if ( at > 0 ) out[ part.slice( 0, at ).trim().toLowerCase() ] = part.slice( at + 1 ).trim(); } );
         return out;
     }
+    // The ancestor is the nearest one with the recorded tag and closed class
+    // tokens, preferring one whose other recorded attributes hold their closed
+    // values (block markup can drop an attribute the capture recorded).
     function ancestorFor( trigger, binding ) {
-        var wanted = tokens( binding.closed[ 'class' ] );
+        var wanted = tokens( binding.closed[ 'class' ] ), names = attributeNames( binding.closed ), fallback = null;
         for ( var node = trigger.parentElement; node; node = node.parentElement ) {
-            if ( node.tagName.toLowerCase() === binding.tag && wanted.every( function( token ) { return node.classList.contains( token ); } ) ) return node;
+            if ( node.tagName.toLowerCase() !== binding.tag || ! wanted.every( function( token ) { return node.classList.contains( token ); } ) ) continue;
+            if ( names.every( function( name ) { return node.getAttribute( name ) === binding.closed[ name ]; } ) ) return node;
+            fallback = fallback || node;
         }
-        return null;
+        return fallback;
     }
     function replay( node, from, to ) {
         if ( 'class' in to ) {
             tokens( from[ 'class' ] ).forEach( function( token ) { if ( tokens( to[ 'class' ] ).indexOf( token ) < 0 ) node.classList.remove( token ); } );
             tokens( to[ 'class' ] ).forEach( function( token ) { node.classList.add( token ); } );
+            if ( null === to[ 'class' ] && ! node.classList.length ) node.removeAttribute( 'class' );
         }
         if ( 'style' in to ) {
             var before = declarations( from.style ), after = declarations( to.style );
             Object.keys( before ).forEach( function( name ) { if ( ! ( name in after ) ) node.style.removeProperty( name ); } );
             Object.keys( after ).forEach( function( name ) { var value = after[ name ].replace( /\s*!important$/i, '' ); node.style.setProperty( name, value, value === after[ name ] ? '' : 'important' ); } );
         }
-        if ( 'hidden' in to ) { if ( null === to.hidden ) node.removeAttribute( 'hidden' ); else node.setAttribute( 'hidden', to.hidden ); }
+        replayAttributes( node, to );
     }
     // Block styles can freeze the closed paint inline on the ancestor. Lift
     // only the inline declarations that a rule for a replayed open class sets,
@@ -102,11 +155,17 @@ function walk( rules ) {
         } );
         return lifted;
     }
-    function applyAncestors( dialog, trigger ) {
+    // Each trigger's ancestors, resolved once. Like the capture runtime on
+    // load, every bound ancestor starts with its recorded closed attributes.
+    function boundAncestors( dialog, trigger ) {
+        var bound = JSON.parse( dialog.getAttribute( 'data-blocks-engine-ancestor-state' ) || '[]' ).map( function( binding ) { return { binding: binding, node: ancestorFor( trigger, binding ) }; } ).filter( function( entry ) { return entry.node; } );
+        bound.forEach( function( entry ) { replayAttributes( entry.node, entry.binding.closed ); } );
+        return bound;
+    }
+    function applyAncestors( dialog, bound ) {
         var applied = [];
-        JSON.parse( dialog.getAttribute( 'data-blocks-engine-ancestor-state' ) || '[]' ).forEach( function( binding ) {
-            var node = ancestorFor( trigger, binding );
-            if ( ! node ) return;
+        bound.forEach( function( entry ) {
+            var node = entry.node, binding = entry.binding;
             replay( node, binding.closed, binding.opened );
             var added = tokens( binding.opened[ 'class' ] ).filter( function( token ) { return tokens( binding.closed[ 'class' ] ).indexOf( token ) < 0; } );
             applied.push( { node: node, binding: binding, lifted: added.length ? maskedDeclarations( node, added ) : {} } );
@@ -167,6 +226,7 @@ function mount( dialog ) {
         var triggers = ( dialog.getAttribute( 'data-blocks-engine-triggers' ) || '' ).split( /\s+/ ).map( function( id ) { return document.getElementById( id ); } ).filter( Boolean );
         if ( ! triggers.length ) return;
         dialog.dataset.blocksEngineMounted = 'true';
+        var ancestors = triggers.map( function( trigger ) { return boundAncestors( dialog, trigger ); } );
         // The capture observed a dropdown: it opens without making the page
         // inert, its source trigger toggles it, and Escape returns focus to
         // that trigger. Anything else keeps the modal contract.
@@ -207,13 +267,13 @@ function close() { expanded( false ); if ( dialog.close ) dialog.close(); else {
             if ( dropdown ) {
                 if ( dialog.hasAttribute( 'open' ) ) { close(); return; }
                 opener = trigger;
-                applyAncestors( dialog, trigger );
+                applyAncestors( dialog, ancestors[ triggers.indexOf( trigger ) ] );
                 if ( 'under-header' === dialog.getAttribute( 'data-blocks-engine-placement' ) ) placeDropdown( dialog, trigger );
                 if ( dialog.show ) dialog.show(); else dialog.setAttribute( 'open', '' );
                 expanded( true );
                 return;
             }
-            if ( ! dialog.open ) applyAncestors( dialog, trigger );
+            if ( ! dialog.open ) applyAncestors( dialog, ancestors[ triggers.indexOf( trigger ) ] );
             if ( dialog.showModal ) dialog.showModal(); else dialog.setAttribute( 'open', '' );
             if ( binding ) {
                 var carousel = dialog.querySelector( '.blocks-engine-authored-carousel' );
@@ -261,7 +321,7 @@ function mountAll() { document.querySelectorAll( 'dialog[data-blocks-engine-trig
                 'style.css' => $style,
                 'index.js' => str_replace(array('__BLOCK_NAME__', '__ATTRIBUTES__', '__DIALOG_ANCESTOR_UNVERIFIED__'), array($blockName, json_encode($attributes, JSON_THROW_ON_ERROR | JSON_UNESCAPED_SLASHES), CaptureEvidence::DIALOG_ANCESTOR_UNVERIFIED), $editor),
             ),
-            'view_js' => $view,
+            'view_js' => str_replace('__ANCESTOR_ATTRIBUTE_PATTERN__', self::ANCESTOR_ATTRIBUTE_PATTERN, $view),
             'script_dependencies' => array('index.js' => array('wp-blocks', 'wp-block-editor', 'wp-element')),
         );
     }
diff --git a/php-transformer/src/HtmlToBlocks/Patterns/DetailsPattern.php b/php-transformer/src/HtmlToBlocks/Patterns/DetailsPattern.php
index bf0849dcf..5fb3aee48 100644
--- a/php-transformer/src/HtmlToBlocks/Patterns/DetailsPattern.php
+++ b/php-transformer/src/HtmlToBlocks/Patterns/DetailsPattern.php
@@ -177,6 +177,13 @@ public function matchDisclosure(DOMElement $element, callable $convertChildren,
         if ( ! $panel instanceof DOMElement || $this->isNavigationLandmark($panel) ) {
             return null;
         }
+        // A projected captured dialog replaces the capture's disclosure
+        // runtime, which also closes on Escape, keeps aria-expanded and
+        // replays ancestor bindings. core/details expresses none of that, so
+        // the native dialog block keeps the panel.
+        if ( 'true' === $panel->getAttribute('data-blocks-engine-captured-dialog') ) {
+            return null;
+        }
         // A modal has a distinct focus/close contract. Native details cannot
         // replace that behavior or consume the source's runtime binding.
         if ('dialog' === strtolower($this->trimmedAttribute($toggle, 'aria-haspopup'))
diff --git a/php-transformer/tests/contract/capture-evidence-equivalence.php b/php-transformer/tests/contract/capture-evidence-equivalence.php
index 5e94e66ad..828c285ee 100644
--- a/php-transformer/tests/contract/capture-evidence-equivalence.php
+++ b/php-transformer/tests/contract/capture-evidence-equivalence.php
@@ -81,7 +81,7 @@
 }
 
 fwrite(STDOUT, sprintf(
-    "Capture-evidence equivalence passed: %d/%d renamed cases byte-identical to origin/trunk %s.\n",
+    "Capture-evidence equivalence passed: %d/%d renamed cases byte-identical to their expectations (origin/trunk %s, plus the deliberate fidelity changes in tools/capture-evidence-equivalence/README.md).\n",
     $identical,
     count($corpus),
     substr((string) $expected['source_commit'], 0, 12)
diff --git a/php-transformer/tests/contract/captured-navigation-runtime.php b/php-transformer/tests/contract/captured-navigation-runtime.php
index 10d21e906..9745b6f6d 100644
--- a/php-transformer/tests/contract/captured-navigation-runtime.php
+++ b/php-transformer/tests/contract/captured-navigation-runtime.php
@@ -12,7 +12,8 @@
     ++$failures;
     fwrite(STDERR, 'FAIL: ' . $message . ('' !== $detail ? ' - ' . $detail : '') . PHP_EOL);
 };
-$helper = 'document.querySelectorAll("[data-blocks-engine-capture-dialog-trigger]").forEach(function(node){var panel=document.getElementById(node.getAttribute("aria-controls"));if(panel)panel.hidden=false;});';
+// Only the published disclosure runtime is retired (CaptureEvidence::DISCLOSURE_RUNTIME_SHA256).
+$helper = trim((string) file_get_contents(dirname(__DIR__) . '/fixtures/capture-disclosure-runtime.js'));
 $item = static function (string $id, string $label, string $extra = ''): string {
     return '<li class="item"><a id="' . $id . '" href="/' . $id . '" aria-haspopup="menu" aria-controls="' . $id . '-panel" aria-expanded="false" data-blocks-engine-capture-dialog-trigger="' . $id . '-panel"' . $extra . '>' . $label . '</a>'
         . '<ul hidden id="' . $id . '-panel" data-blocks-engine-capture-dialog-panel="' . $id . '-panel" class="dropdown"><li><a href="/' . $id . '/a">Alpha</a></li><li><a href="/' . $id . '/b">Beta</a></li></ul></li>';
@@ -23,8 +24,8 @@
 $scope = static function (string $name, string $extra = '') use ($nav): string {
     return '<div data-blocks-engine-capture-device-document="' . $name . '" data-blocks-engine-capture-document-scope="' . $name . '">' . $nav . $extra . '<main><h1>' . $name . '</h1><p>Neutral page copy.</p></main></div>';
 };
-$page = static function (string $body) use ($helper): string {
-    return '<!doctype html><html><head><script>window.captureMarker=true;</script><script data-blocks-engine-capture-disclosure-runtime="true">' . $helper . '</script></head><body>' . $body . '</body></html>';
+$page = static function (string $body, ?string $runtime = null) use ($helper): string {
+    return '<!doctype html><html><head><script>window.captureMarker=true;</script><script data-blocks-engine-capture-disclosure-runtime="true">' . ($runtime ?? $helper) . '</script></head><body>' . $body . '</body></html>';
 };
 $dialog = '<ul><li><a href="/shop/a">Alpha</a></li><li><a href="/shop/b">Beta</a></li></ul>';
 $state = static function (string $selector, string $label) use ($dialog): array {
@@ -80,6 +81,18 @@
         $assert(in_array('window.captureMarker=true;', $assetBodies, true), $case . ' retains the unrelated inline script');
     }
 }
+// One changed byte makes the body unknown. Every navigation retirement path
+// (observed states, no observed states, no interaction report) keeps it.
+$altered = str_replace('function triggers(){', 'function triggers( ){', $helper);
+$assert($altered !== $helper, 'the altered body differs by one byte');
+foreach (array('observed states' => $ownedStates, 'no observed states' => array(), 'no interaction report' => null) as $case => $states) {
+    $input = $artifact($page($scope('desktop') . $scope('mobile'), $altered), $states ?? array());
+    if (null === $states) array_pop($input['files']);
+    foreach ($compileBoth($input) as $result) {
+        $assert(array() === ($result['source_reports']['native_runtime_replacements'] ?? array()), $case . ': an unrecognized disclosure body is not retired', json_encode($result['source_reports']['native_runtime_replacements'] ?? null));
+        $assert(in_array($altered, array_column($result['assets'] ?? array(), 'content'), true), $case . ': the unrecognized disclosure body ships with the page');
+    }
+}
 $unresolved = '<section><div id="notes-toggle" class="menu-cue" role="button" tabindex="0" aria-label="Notes" aria-haspopup="dialog" aria-controls="notes-panel" data-blocks-engine-capture-dialog-trigger="notes-panel"><span></span><span></span><span></span></div><div hidden id="notes-panel" data-blocks-engine-capture-dialog-panel="notes-panel"><p>Unresolved notes.</p></div></section>';
 foreach (array('observed' => array_merge($ownedStates, array($state('#notes-toggle', 'Notes'))), 'unobserved' => array()) as $case => $states) {
     foreach ($compileBoth($artifact($page($scope('desktop', $unresolved)), $states)) as $mixed) {
diff --git a/php-transformer/tests/contract/head-script-retirement.php b/php-transformer/tests/contract/head-script-retirement.php
index 2a6cddf87..460719dce 100644
--- a/php-transformer/tests/contract/head-script-retirement.php
+++ b/php-transformer/tests/contract/head-script-retirement.php
@@ -20,7 +20,7 @@
 $head = DocumentHeadContext::fromPlan($plan, 'website/index.html');
 $dom = new DOMDocument();
 $dom->loadHTML('<html><head>' . $head . '</head><body></body></html>');
-$assert(!str_contains($head, 'window.captureGallery'), 'Only the proven native gallery replacement retires its helper');
+$assert(!str_contains($head, 'data-blocks-engine-capture-gallery-runtime') && !str_contains($head, 'data-blocks-engine-capture-gallery-sequence'), 'Only the proven native gallery replacement retires its helper');
 $assert('application/json' === $dom->getElementById('route-data')->getAttribute('type') && '{"mode":"gallery"}' === $dom->getElementById('route-data')->textContent, 'Inert data script survives with its authored body/type');
 $assert($dom->getElementById('retained-first')->textContent === $dom->getElementById('retained-second')->textContent && str_contains($dom->getElementById('retained-first')->textContent, 'setAttribute'), 'Equal-body helpers retain both distinct DOM occurrences and payloads');
 $assert(4 === $dom->getElementsByTagName('script')->length, 'Data, two inline helpers, and one external asset remain in source order');
diff --git a/php-transformer/tests/fixtures/capture-evidence-equivalence/expected.json b/php-transformer/tests/fixtures/capture-evidence-equivalence/expected.json
index 58edc1cef..100c50af6 100644
--- a/php-transformer/tests/fixtures/capture-evidence-equivalence/expected.json
+++ b/php-transformer/tests/fixtures/capture-evidence-equivalence/expected.json
@@ -59,7 +59,7 @@
         {
             "id": "07f8a0bd8ea86b1740d01e7aad529128fa10e5c6",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "ca55b949a2ea926dbdb2acddd7cae1f6ad5a66517fe4381e92e32441fc474a47",
+            "expected_sha256": "618e1a797c88c832ac514aedaab418ac7b281589bb6aeb4d05e16ccb79394cd6",
             "outcome": "output"
         },
         {
@@ -83,7 +83,7 @@
         {
             "id": "0a9c1bea54021ba60093b14cc124cefca0e60616",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "fcc8bb9d517b1b0f02196779ce18a06552c5a89b75ca5e9322edd0dec6407632",
+            "expected_sha256": "011a8609d40356a62eced84729322d578e5826a1df060ade41004e98c59aedc0",
             "outcome": "output"
         },
         {
@@ -101,7 +101,7 @@
         {
             "id": "0bf7a2ea6d25e14b83b035068d817a3c2822ba4b",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "59b31ddc6736d8d8b3a2a1e9cd491c152a38eed5bcc3b0df0fa770eb277b4212",
+            "expected_sha256": "ce1a274f1f23cdf1a92f21cef22f9ded8e411acd999cb3069132d4311e1ec267",
             "outcome": "output"
         },
         {
@@ -119,7 +119,7 @@
         {
             "id": "12d3ff943f72cf2f3b32aeb91e4bacb32bfcb003",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "563af4348800976efb530bdb2b84c772b31cf9845d08e177613dc24f3471e631",
+            "expected_sha256": "d4ba06fa6d92cb28d1e47dfa06abb47eb5c11edb87b99609294213f0036d4dc8",
             "outcome": "output"
         },
         {
@@ -143,7 +143,7 @@
         {
             "id": "15082c2dc6a6f26471c6b1b16a41446c0c3ed22a",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "02aac4aacfff0c65078ab9ba6acd38cc2a31e3ec55564b4d0569b4a782ca9803",
+            "expected_sha256": "2c55d1a448a18ca91b31ad842a0895c4873a7ea69aaee4590329d3fbd9703dbd",
             "outcome": "output"
         },
         {
@@ -209,7 +209,7 @@
         {
             "id": "1e87fd7170484fa6c8288d2d21ab9e181c982bd1",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "976776d245ca003860b560b4b2f77fb532a7ecfd9960d0e1ef5bf788174c3a41",
+            "expected_sha256": "b8092f01263cd5d1647e56d1e33d737aeab2da310757c376748774312741e7a1",
             "outcome": "output"
         },
         {
@@ -245,7 +245,7 @@
         {
             "id": "21e5cdbf5ec5e6081029d84c0c34ccac47171153",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "7cf2e0be02705daf702a687446bbb51d0417fadc3d0febd97559c996f10c58ba",
+            "expected_sha256": "7bdc637e0ac9c24bca6331d62f4eb2ab299a59baf0701fc2be91b3afb70c537b",
             "outcome": "output"
         },
         {
@@ -335,13 +335,13 @@
         {
             "id": "28e1a0f1b5bef11b70c18dc39033d6a84461621b",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "771c561636d44fdc607336e2db4a060ebb1a17beecc3b9c9a6b17a6b71a16f70",
+            "expected_sha256": "940c7193476016e11e979d37d44f83cce58a6c49d92e69d84edfa589ba353e15",
             "outcome": "output"
         },
         {
             "id": "2915d21f717a45ad97cc901e84ead8debcb5e07b",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "af63451b62fb60ea55f3812419501bb2a5657f6e6ac0fcadde79e424a238e155",
+            "expected_sha256": "0f6cd685ea08990e95421490ebf96d0c302848d03650578c60693e3714d066d4",
             "outcome": "output"
         },
         {
@@ -383,7 +383,7 @@
         {
             "id": "2f545afa2f6cffe9b9b8fa287e1bac1c40271b17",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "845731365f441275093f38a848b76b700c357376e89e4a785fa79caa4764114a",
+            "expected_sha256": "68f25bc4c6fbf010ab9a4b0670e0f4cbc669298870b804a94fe0b94db1b851e1",
             "outcome": "output"
         },
         {
@@ -407,7 +407,7 @@
         {
             "id": "3317930e5bae9630e1a2dfa63325692d65285d7d",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "3e85f4dca40045b4c129b5155947417600dcad7de8e22889b94dca4e44f47fe9",
+            "expected_sha256": "1db59911142ab8fe373824c7c5e7275df23aa9bed9cc2653823264d66c1fef05",
             "outcome": "output"
         },
         {
@@ -437,7 +437,7 @@
         {
             "id": "37284b0ef56612a5ff0cda0976e9baf91af033cb",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "a490f66e5d86abc63c10453d163a1e9ee87031183925fe951282c931fbf554ad",
+            "expected_sha256": "2103fa98642d8db5447e68d5a2642d27165f74f20e511e9120b958b23bf9bd0e",
             "outcome": "output"
         },
         {
@@ -473,7 +473,7 @@
         {
             "id": "3b0aed43853d869d1ae9c0a6eb7f65fb8d41333c",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "cab862f3d72860ae2bf52e2bc2bf53f648677f2cdc82467d48074372ffdf8f73",
+            "expected_sha256": "1f73eb98e675cff9447fa2e6ef7842c0bcbcccba5e12cead69747b26a6cc6db7",
             "outcome": "output"
         },
         {
@@ -485,7 +485,7 @@
         {
             "id": "3e2836686c56a0d68490a0e9ee8c602eda3897fa",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "aafbf10cd5cbf6be5b0937f7242f546450675e674f6253262eba288b11696bbf",
+            "expected_sha256": "2dc61a80cb2571b67fd8db160e03ba9a407081a4378ac597ebfa643cb11074d7",
             "outcome": "output"
         },
         {
@@ -557,7 +557,7 @@
         {
             "id": "461f0a83156f31f02e338679420d68a4cc6c9201",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "830bc55a2a81d62018cf3755d67662995ba0f8cec7aa510ecef32cce8e73752a",
+            "expected_sha256": "ef40052763b3d4c414b1640965de1bab109deb3fa0b62e57451079618f068bae",
             "outcome": "output"
         },
         {
@@ -653,7 +653,7 @@
         {
             "id": "55b724ac2c76d2fde1959aeee3370f76b3d8129d",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "8603eae4524783bb310880f387fd6859acc2849bdde24ef46e33e7ea34199c1d",
+            "expected_sha256": "60ac73a9c8f5740223f04e57fc8702354a374ff301a3c969daea8538b0823d5a",
             "outcome": "output"
         },
         {
@@ -737,7 +737,7 @@
         {
             "id": "5eccb5417a80e008e3b8ee0e81acf7096f7b3ad6",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "cc3e0c074e0761283e332b5e99daf7f0fc7fcfe0b7bebd58840c68e39d783802",
+            "expected_sha256": "aeeafe7aff9e0f1d00546d1f2cfbeaa6c69407e440962328eb5cdbfcf8e830e5",
             "outcome": "output"
         },
         {
@@ -779,7 +779,7 @@
         {
             "id": "62d3b1f89f1b9de974a11a027f5831c2797a4a5f",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "1306bdf2b15caaec8ad97acb070d5f92efff94a6a1b5b80f183569f2abfc5f17",
+            "expected_sha256": "16b3846361d71f3145a7c319755bb530a426215e4c1df9fd22505b56b9c0903b",
             "outcome": "output"
         },
         {
@@ -797,7 +797,7 @@
         {
             "id": "647b8b53e0e915a0c5d5499d4c3c31eae62e3e70",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "f3a80e10d546048fd597f900a7500fbfb9b4760579b577aca175a2b2bba75690",
+            "expected_sha256": "a700043a869149614aba31ae8caad6e088a2812d38bec81c588b5350512f4e98",
             "outcome": "output"
         },
         {
@@ -887,13 +887,13 @@
         {
             "id": "6cdada8661e0d9b04d40ce5b170625900cbd3bf1",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "36b05ed09e3fbb812fe28ab809b4ec4181fcea741d2c1b4553cb0ab0dabe3019",
+            "expected_sha256": "bacb3d661f2700183abd71564c02d6534128c8fdeb74602567a8c7d6fd2e37e4",
             "outcome": "output"
         },
         {
             "id": "6ed86c41afcf40c191e8f8c33d9ab000c8b72e3f",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "6a6251a6a1e7a032fb08839b8c0de3bad1fdd46abe272bc882fe66b06b1edb5d",
+            "expected_sha256": "335be6e123fdf15d9a152a1cec10180854414fe1dd36d85a5f5dfb1132753e8a",
             "outcome": "output"
         },
         {
@@ -1019,7 +1019,7 @@
         {
             "id": "7a7af8982960e28f4cf964953c85b58a510699e0",
             "entry": "HtmlTransformer::transform",
-            "expected_sha256": "174877b0d9f9e1bef3be515ab901d646cb0bd61e0f3e7b0928e5c6ea241c0a7f",
+            "expected_sha256": "d7a21036360daea3b22782bbff2274b410450f5e3ec0342901d0c13691532b4f",
             "outcome": "output"
         },
         {
@@ -1043,7 +1043,7 @@
         {
             "id": "7c2d1217f68f1eeed57e660c70936247d937c414",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "ee1d80365e62e76ed9895e570338b31bbd1e9dcf86177c3b89414d10bb4c78ef",
+            "expected_sha256": "aff5b81437d0f8acbd64bd33825fbd05d7e2d4c51213f1817df47d5a083f4a8a",
             "outcome": "output"
         },
         {
@@ -1175,7 +1175,7 @@
         {
             "id": "8d155e3be64f60344947488082b39546db16069e",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "6d879d390c65ba83b314b0a03f6ae596795e1f05b1963711267489a385fa2688",
+            "expected_sha256": "0d20efea518e57d70ff128811c5f64dae3af4ef81b97b2a43d5f7c3e0dd0ad69",
             "outcome": "output"
         },
         {
@@ -1211,7 +1211,7 @@
         {
             "id": "90115e6057a6d61f3fed2e2e94db98e9abbe9ba2",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "dd820832e7011f3575cb242f7379d42890718a23b4c0acbbb5b9f9d2297a3663",
+            "expected_sha256": "4f5de40861ea1609ea179c2a80d790dfcfc6e0000432ae5d3d67345c34480144",
             "outcome": "output"
         },
         {
@@ -1241,7 +1241,7 @@
         {
             "id": "927aa36875da93af28e278f37359f0c3fbbee7d8",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "e63255c5a4055d34e00811b2029c23605ae7686aee08f72b2d32470e4fccaed1",
+            "expected_sha256": "803cea008023246f4a4086946263d6cf62b3a79531740656e851f9a1917a01ca",
             "outcome": "output"
         },
         {
@@ -1259,7 +1259,7 @@
         {
             "id": "944dd63db631afc5664d39d5f49658f016e89e27",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "388955e18df92b60383bd966ee4e45693fe8f707361cab14e28bbfcbe4025f34",
+            "expected_sha256": "5a2c5d37daa05c773bab41b6df4ddf59293242bc8ddda3ae04f23616b77959f3",
             "outcome": "output"
         },
         {
@@ -1475,13 +1475,13 @@
         {
             "id": "b913b3b49e19c7dd90ced1e39951b0cd843dbb42",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "43d8765e448aeda7fad82287894338b7324c6668a19c2c49111eba9e6302c2e2",
+            "expected_sha256": "519ccaa755d56782ab0bc3d2dbf4acec7aef442056605c6afeb279872adfb976",
             "outcome": "output"
         },
         {
             "id": "bab702ca37fa3cfa6c3222704fcd92dd6482ce75",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "250024477b26dc37416a2348c596cf80e84e9ad544891d6023d86fdd6e86d535",
+            "expected_sha256": "89e31f0b670ed965b5f276e61712fd5c74a13bf72cc48aa5e9443bbcfa189cef",
             "outcome": "output"
         },
         {
@@ -1499,7 +1499,7 @@
         {
             "id": "bcd4e29be7c894ed7848a5937bb9f660ee280779",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "1c5d23b167b965fabf3d17dc25f39111560c14b4362b5986e97d06eab41280fd",
+            "expected_sha256": "58fe1a0f75f0eb40bc1ef90c1c3c190704c0a6a3176b88709c28eb3aae529497",
             "outcome": "output"
         },
         {
@@ -1793,7 +1793,7 @@
         {
             "id": "df9c24a89732ac84a5fb55a4fd84cb89492722c3",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "2f3f2be77c7c81c9eb6f0740bc0ae56de1bba784dcb559574b38980553d11124",
+            "expected_sha256": "160ab577d01f47b915fd211a2db22cfd6c1d81eec701818206f92dd5483fa93c",
             "outcome": "output"
         },
         {
@@ -1841,7 +1841,7 @@
         {
             "id": "e5ea57430e2ac12b29b8351684acc9fde5ba6431",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "71abd61f01a200b383f16c9f96f2120941fe6a49cecd6550cb3f8b0fcad7d5df",
+            "expected_sha256": "5738d685415c7655edcf23f8c7d9e6854120b630e27bb2d8031e6dd996473119",
             "outcome": "output"
         },
         {
@@ -1895,7 +1895,7 @@
         {
             "id": "eaad29efccc2e7fa6a01a2334673eeef84e9e98f",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "0445da8512501c9d22a4fcdae9ef7a8578e0d37823b7fc84e1a93bb5f0f11794",
+            "expected_sha256": "0e8be2098ca4f5b4807515ef9e8cc41e0bc8e59bc33bcf01ca4d87976646f71c",
             "outcome": "output"
         },
         {
@@ -2015,7 +2015,7 @@
         {
             "id": "f67e5ca643c0cb67a0008dc6a6b5a7addd005df0",
             "entry": "CapturedDialogProjector::project",
-            "expected_sha256": "e1af7de71256e6fdf1194873d74ad78ff51b92f598eb73738dd099adfad68fba",
+            "expected_sha256": "6beb68890c7380553ada39737f6fc0ab4c0947dbac7868ad5a94af80cfd4b631",
             "outcome": "output"
         },
         {
@@ -2069,7 +2069,7 @@
         {
             "id": "fcc75319509e48a8405c1f14f69d2e1f7e66cb4a",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "00d1aca1a04e70b05bc50174480bdac2a5fb81f2ce182362d4f456eebd9b2b3d",
+            "expected_sha256": "6cf18dd80849ec19ae1435fde5121fce1d32e42834217a11954352700c88dc9c",
             "outcome": "output"
         },
         {
@@ -2081,7 +2081,7 @@
         {
             "id": "feef8efc18785eed32b02bb0eb3a90d94ac4d840",
             "entry": "ArtifactCompiler::compile",
-            "expected_sha256": "99a218f38ee98566d3f0a0489e28790c60a269ff49329a780c4e0e2fc793d0bd",
+            "expected_sha256": "8c594c347b0870d0b946556dc075ca6f2a86baec01905253b05c5d9b8aba2ab2",
             "outcome": "output"
         },
         {
diff --git a/php-transformer/tests/fixtures/head-script-retirement.php b/php-transformer/tests/fixtures/head-script-retirement.php
index 28622e3c7..2a5da2a9e 100644
--- a/php-transformer/tests/fixtures/head-script-retirement.php
+++ b/php-transformer/tests/fixtures/head-script-retirement.php
@@ -10,7 +10,8 @@
 $items = static fn(string $directory): string => '<div><img src="/' . $directory . '/a.png" alt="A"></div><div><img src="/' . $directory . '/b.png" alt="B"></div>';
 $helper = 'document.querySelector("meta[data-mode]").setAttribute("content","ready");';
 $head = '<meta data-mode content="waiting"><script type="application/json" id="route-data">{"mode":"gallery"}</script><script id="empty"> </script>'
-    . '<script data-blocks-engine-capture-gallery-runtime>window.captureGallery=true;</script>'
+    // Only the published gallery runtime is retired with its native replacement.
+    . '<script data-blocks-engine-capture-gallery-runtime>' . trim((string) file_get_contents(__DIR__ . '/capture-gallery-runtime.js')) . '</script>'
     . '<script id="retained-first">' . $helper . '</script><script src="/script.js"></script><script id="retained-second">' . $helper . '</script>';
 $body = '<section id="pictures" data-blocks-engine-capture-gallery data-blocks-engine-capture-gallery-source="#pictures" data-blocks-engine-capture-gallery-capture-width="1440"><h2>Pictures</h2><div class="gallery carousel"><div id="stage" data-blocks-engine-capture-gallery-stage data-blocks-engine-capture-gallery-initial="0" data-blocks-engine-capture-dialog-trigger="panel" aria-controls="panel">' . $items('inline') . '</div><button aria-label="Previous image">Previous</button><button aria-label="Next image">Next</button></div><div id="panel" data-blocks-engine-capture-dialog-panel="panel" hidden><div data-blocks-engine-capture-gallery-stage>' . $items('full') . '</div></div></section>';
 $files = array(
diff --git a/php-transformer/tests/unit/capture-runtime-attribute-parity-browser.mjs b/php-transformer/tests/unit/capture-runtime-attribute-parity-browser.mjs
new file mode 100644
index 000000000..86ae3d0ec
--- /dev/null
+++ b/php-transformer/tests/unit/capture-runtime-attribute-parity-browser.mjs
@@ -0,0 +1,75 @@
+// Real-browser parity between the recognized capture disclosure runtime and
+// the native dialog that replaces it, for attribute-only ancestor rows. Both
+// pages get the same clicks and keys; after each step, every recorded
+// attribute on each bound ancestor must hold the same value on both pages
+// (absent on both, or equal), and the bound header must paint the same.
+// Run `php tests/unit/capture-runtime-attribute-parity.php` first for fixtures.
+import { readFileSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import assert from 'node:assert/strict';
+
+const { chromium } = await import(process.env.PLAYWRIGHT_MODULE || 'playwright');
+const fixture = JSON.parse(readFileSync(`${tmpdir()}/capture-runtime-attribute-parity.json`, 'utf8'));
+const browser = await chromium.launch({ headless: true });
+let checks = 0;
+
+const rows = fixture.ancestors.map(row => ({ selector: row.selector, names: Object.keys(row.closed) }));
+const allNames = [...new Set(rows.flatMap(row => row.names))];
+const snapshot = page => page.evaluate(({ rows, allNames }) => {
+  const control = document.querySelector('#site-header button');
+  // No ancestor outside the recorded ones may receive a recorded attribute.
+  const strays = [];
+  for (let node = control.parentElement; node; node = node.parentElement) {
+    if (rows.some(row => document.querySelector(row.selector) === node)) continue;
+    allNames.forEach(name => { if (node.hasAttribute(name)) strays.push(`${node.tagName}.${name}`); });
+  }
+  return {
+    expanded: control.getAttribute('aria-expanded'),
+    background: getComputedStyle(document.querySelector('#site-header')).backgroundColor,
+    strays,
+    ancestors: rows.map(row => {
+      const node = document.querySelector(row.selector);
+      return Object.fromEntries(row.names.map(name => [name, node.getAttribute(name)]));
+    }),
+  };
+}, { rows, allNames });
+
+const source = await browser.newPage({ viewport: { width: 1280, height: 800 } });
+await source.setContent(fixture.source);
+const native = await browser.newPage({ viewport: { width: 1280, height: 800 } });
+await native.setContent(`<!doctype html><html><head><style>${fixture.css}</style></head><body>${fixture.native}<script>${fixture.script}</script></body></html>`);
+assert.equal(await native.locator('script[data-blocks-engine-capture-disclosure-runtime]').count(), 0, 'the native page carries no capture runtime');
+assert.equal(await source.locator('script[data-blocks-engine-capture-disclosure-runtime]').count(), 1, 'the source page runs the capture runtime');
+assert.equal(await native.locator('details').count(), 0, 'the text-labelled trigger stays a native dialog trigger, not core/details');
+
+const steps = ['initial', 'open', 'close', 'reopen', 'Escape', 'open again'];
+const seen = [];
+for (const step of steps) {
+  for (const page of [source, native]) {
+    if (step === 'Escape') await page.keyboard.press('Escape');
+    else if (step !== 'initial') await page.locator('#site-header button').click();
+    await page.waitForTimeout(50);
+  }
+  const [sourceState, nativeState] = [await snapshot(source), await snapshot(native)];
+  assert.deepEqual(nativeState.ancestors, sourceState.ancestors, `${step}: native ancestor attributes match the capture runtime`);
+  assert.equal(nativeState.expanded, sourceState.expanded, `${step}: native aria-expanded matches the capture runtime`);
+  assert.equal(nativeState.background, sourceState.background, `${step}: the attribute-keyed header paint matches`);
+  assert.deepEqual(nativeState.strays, [], `${step}: no unrecorded ancestor receives a recorded attribute`);
+  seen.push(sourceState);
+  checks += 4;
+}
+assert.deepEqual(seen[1].ancestors, [
+  { 'data-section-theme': 'light' },
+  { 'aria-expanded': 'true', 'data-state': 'open' },
+  { 'data-menu': 'open' },
+], 'the fixture exercises set, added and value-changed attributes when open');
+assert.deepEqual(seen[2].ancestors, [
+  { 'data-section-theme': 'dark' },
+  { 'aria-expanded': null, 'data-state': 'closed' },
+  { 'data-menu': null },
+], 'the fixture exercises removal of attributes whose closed value is null');
+assert.notEqual(seen[1].background, seen[2].background, 'the header paint follows its replayed attribute');
+checks += 3;
+
+await browser.close();
+console.log(`capture-runtime-attribute-parity browser contract passed: ${checks} checks`);
diff --git a/php-transformer/tests/unit/capture-runtime-attribute-parity.php b/php-transformer/tests/unit/capture-runtime-attribute-parity.php
new file mode 100644
index 000000000..4c2bb503a
--- /dev/null
+++ b/php-transformer/tests/unit/capture-runtime-attribute-parity.php
@@ -0,0 +1,97 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * Recognized disclosure runtime -> native dialog: attribute-only ancestor rows.
+ *
+ * The capture records `class`, `style`, `hidden`, `aria-*` and `data-*` changes
+ * on a trigger's ancestors, and its disclosure runtime replays every recorded
+ * attribute: the opened value on open, the closed value on close and on load,
+ * removing the attribute when the recorded value is null. When the runtime is
+ * retired, the native dialog must do the same. This test compiles a scoped
+ * dropdown whose text-labelled trigger carries attribute-only rows (a header
+ * `data-section-theme`, `aria-expanded`/`data-state` on the document scope,
+ * a `data-menu` added to body) and checks that every row reaches the native
+ * dialog. It writes the fixture for capture-runtime-attribute-parity-browser.mjs,
+ * which drives the source runtime and the native dialog in Chromium.
+ */
+
+require dirname(__DIR__, 2) . '/vendor/autoload.php';
+
+use Automattic\BlocksEngine\PhpTransformer\ArtifactCompiler\ArtifactCompiler;
+use Automattic\BlocksEngine\PhpTransformer\Contract\CaptureEvidence;
+use Automattic\BlocksEngine\PhpTransformer\HtmlToBlocks\Generators\CapturedDialogBlockGenerator;
+
+$failures = 0;
+$assert = static function (bool $condition, string $message, string $context = '') use (&$failures): void {
+    if ($condition) return;
+    ++$failures;
+    fwrite(STDERR, "FAIL: {$message}\n" . ('' !== $context ? substr($context, 0, 1600) . "\n" : ''));
+};
+
+$runtime = trim((string) file_get_contents(dirname(__DIR__) . '/fixtures/capture-disclosure-runtime.js'));
+$assert(CaptureEvidence::DISCLOSURE_RUNTIME_SHA256 === hash('sha256', $runtime), 'the fixture is the published disclosure runtime');
+
+$ancestors = array(
+    array('selector' => '#site-header', 'tag' => 'header', 'depth' => 2, 'closed' => array('data-section-theme' => 'dark'), 'opened' => array('data-section-theme' => 'light')),
+    array('selector' => '#scope', 'tag' => 'div', 'depth' => 3, 'closed' => array('aria-expanded' => null, 'data-state' => 'closed'), 'opened' => array('aria-expanded' => 'true', 'data-state' => 'open')),
+    array('selector' => 'body', 'tag' => 'body', 'depth' => 4, 'closed' => array('data-menu' => null), 'opened' => array('data-menu' => 'open')),
+);
+$key = 'site-menu-panel';
+$trigger = '<button type="button" data-blocks-engine-capture-disclosure-label="Menu" data-blocks-engine-capture-dialog-trigger="' . $key . '" aria-controls="' . $key . '" aria-expanded="false" aria-haspopup="menu" data-blocks-engine-capture-dialog-ancestor-state="' . htmlspecialchars(json_encode($ancestors, JSON_THROW_ON_ERROR), ENT_QUOTES) . '">Menu</button>';
+$panel = '<div id="' . $key . '" class="menu-panel data-blocks-engine-capture-dropdown" hidden data-blocks-engine-capture-dialog-panel="' . $key . '"><div><p>Visit</p><a href="#one">One</a></div></div>';
+$css = 'body{margin:0;font-family:Arial}header{display:block;padding:8px}'
+    . '[data-section-theme="dark"]{background:rgb(20,20,20);color:white}[data-section-theme="light"]{background:rgb(250,250,250);color:black}'
+    . '[data-state="open"] main{opacity:.5}body[data-menu="open"]{overflow:hidden}.menu-panel{padding:8px}';
+$scope = '<div id="scope" class="data-blocks-engine-capture-desktop-document" data-state="closed" data-blocks-engine-capture-document-scope="">'
+    . '<header id="site-header" class="site-header" data-section-theme="dark"><div class="menu-host">' . $trigger . $panel . '</div></header>'
+    . '<main><h2 id="one">One</h2><h2 id="two">Two</h2></main></div>';
+$page = static fn (string $body): string => '<!doctype html><html><head><style>' . $css . '</style><script data-blocks-engine-capture-disclosure-runtime="true">' . $body . '</script></head><body>' . $scope . '</body></html>';
+$state = array(
+    'status' => 'captured',
+    'trigger' => array('selector' => 'missing', 'label' => 'Menu', 'tag' => 'button', 'ariaHaspopup' => 'menu'),
+    'dialog' => array('html' => '<div>Report snapshot</div>', 'htmlBytes' => strlen('<div>Report snapshot</div>'), 'htmlTruncated' => false, 'presentation' => 'dropdown'),
+);
+$compile = static fn (string $html): array => (new ArtifactCompiler())->compile(array('entrypoint' => 'website/index.html', 'files' => array(
+    array('path' => 'website/index.html', 'content' => $html),
+    array('path' => 'capture-receipt.json', 'content' => json_encode(array('schema' => CaptureEvidence::CAPTURE_RECEIPT_SCHEMA, 'routes' => array(array('url' => 'https://example.test/', 'path' => 'website/index.html'))))),
+    array('path' => 'interaction-states.json', 'content' => json_encode(array('schema' => CaptureEvidence::CAPTURED_INTERACTIONS_SCHEMA, 'pages' => array(array('sourceUrl' => 'https://example.test/', 'states' => array($state)))))),
+)))->toArray();
+
+$source = $page($runtime);
+$native = $compile($source);
+$markup = (string) ($native['serialized_blocks'] ?? '');
+$proofs = array_column($native['source_reports']['native_runtime_replacements'] ?? array(), 'body_hash', 'attribute');
+$assert(CaptureEvidence::DISCLOSURE_RUNTIME_SHA256 === ($proofs[CaptureEvidence::DISCLOSURE_RUNTIME] ?? null), 'the published disclosure runtime is retired with a native replacement proof', json_encode($native['source_reports']['native_runtime_replacements'] ?? null));
+$assert(1 === substr_count($markup, '<!-- wp:custom/captured-dialog ') && !str_contains($markup, '<!-- wp:details'), 'the text-labelled dropdown becomes one native dialog block, not core/details', $markup);
+libxml_use_internal_errors(true);
+$dom = new DOMDocument();
+$dom->loadHTML('<body>' . $markup . '</body>');
+$dialog = (new DOMXPath($dom))->query('//*[@data-blocks-engine-triggers]')->item(0);
+$expected = array_map(static fn (array $row): array => array('tag' => $row['tag'], 'closed' => $row['closed'], 'opened' => $row['opened']), $ancestors);
+$assert($dialog instanceof DOMElement && $expected === json_decode($dialog->getAttribute('data-blocks-engine-ancestor-state'), true), 'every attribute-only ancestor row travels to the native dialog', $markup);
+$assert(0 === ($native['metrics']['fallback_count'] ?? -1), 'the page lowers without fallback blocks');
+
+// Only attributes the capture records and its runtime replays travel. A row
+// naming an event handler, a URL attribute or the engine's own namespace is
+// dropped; the remaining rows still travel.
+$hostile = array_merge($ancestors, array(
+    array('tag' => 'header', 'closed' => array('onclick' => null), 'opened' => array('onclick' => 'alert(1)')),
+    array('tag' => 'div', 'closed' => array('href' => null), 'opened' => array('href' => 'javascript:alert(1)')),
+    array('tag' => 'div', 'closed' => array('data-blocks-engine-triggers' => null), 'opened' => array('data-blocks-engine-triggers' => 'x')),
+));
+$assert($expected === CapturedDialogBlockGenerator::ancestorState($hostile), 'handler, URL and engine-namespace rows are dropped from the replayable binding');
+$assert(array() === CapturedDialogBlockGenerator::ancestorState(array(array('tag' => 'div', 'closed' => array('data-a' => 'x'), 'opened' => array('data-b' => 'y')))), 'a row whose closed and opened attributes differ is rejected');
+$definition = (new CapturedDialogBlockGenerator())->definition('custom/captured-dialog');
+$assert(str_contains((string) $definition['view_js'], "new RegExp( '" . CapturedDialogBlockGenerator::ANCESTOR_ATTRIBUTE_PATTERN . "' )"), 'the view script replays only the shared attribute allowlist');
+
+file_put_contents(sys_get_temp_dir() . '/capture-runtime-attribute-parity.json', json_encode(array(
+    'source' => $source,
+    'native' => $markup,
+    'css' => $css . (string) ($definition['assets']['style.css'] ?? ''),
+    'script' => (string) ($definition['view_js'] ?? ''),
+    'ancestors' => $ancestors,
+), JSON_THROW_ON_ERROR | JSON_UNESCAPED_SLASHES));
+
+if (0 !== $failures) exit(1);
+echo "capture-runtime-attribute-parity: ok\n";
diff --git a/php-transformer/tests/unit/captured-dialog-projector.php b/php-transformer/tests/unit/captured-dialog-projector.php
index 92cdce99b..70d4ad77c 100644
--- a/php-transformer/tests/unit/captured-dialog-projector.php
+++ b/php-transformer/tests/unit/captured-dialog-projector.php
@@ -156,7 +156,10 @@
 $selector = $project($files(array('https://example.test/selector' => $selectorHtml), array('https://example.test/selector' => array($state($selectorTrigger)))));
 $assert(1 === ($selector['projected_count'] ?? 0), 'wrapper-normalized positional selectors match inside a responsive document');
 
-$closeRuntime = 'document.querySelector("[data-blocks-engine-capture-dialog-close]");';
+// Retirement requires the published disclosure runtime body.
+$publishedRuntime = trim((string) file_get_contents(dirname(__DIR__) . '/fixtures/capture-disclosure-runtime.js'));
+$alteredRuntime = str_replace('function triggers(){', 'function triggers( ){', $publishedRuntime);
+$closeRuntime = $publishedRuntime;
 $closeTrigger = array('selector' => 'body > header > button', 'tag' => 'button', 'ariaHaspopup' => 'dialog', 'label' => 'Menu', 'dataBindings' => array());
 $closeHtml = '<html><head><script data-blocks-engine-capture-disclosure-runtime="true">' . $closeRuntime . '</script></head><body><header><button type="button" data-blocks-engine-capture-dialog-trigger="data-blocks-engine-capture-dialog-0" aria-haspopup="dialog" aria-label="Menu">Menu</button></header><button type="button" hidden data-blocks-engine-capture-dialog-close="data-blocks-engine-capture-dialog-0" aria-label="Close Menu">Close</button></body></html>';
 $closeRows = $files(array('https://example.test/' => $closeHtml), array('https://example.test/' => array($state($closeTrigger))));
@@ -167,6 +170,8 @@
 $assert(!str_contains($closeMarkup, 'data-blocks-engine-capture-dialog-close') && !str_contains($closeMarkup, 'data-blocks-engine-capture-disclosure-runtime'), 'a matched capture close helper and its runtime are removed');
 $assert(array() === array_values(array_filter($close['files'], static fn (array $file): bool => 'website/index.inline-4.js' === ($file['path'] ?? ''))), 'the extracted disclosure script is omitted');
 $assert('native_dialog_close_replaces_capture_close_helper' === ($close['native_runtime_replacements'][0]['reason'] ?? ''), 'replacement proof names the native dialog close');
+$alteredClose = $project($files(array('https://example.test/' => str_replace($publishedRuntime, $alteredRuntime, $closeHtml)), array('https://example.test/' => array($state($closeTrigger)))));
+$assert(0 === ($alteredClose['projected_count'] ?? -1) && str_replace($publishedRuntime, $alteredRuntime, $closeHtml) === ($alteredClose['files'][0]['content'] ?? null) && array() === ($alteredClose['native_runtime_replacements'] ?? array()), 'an unrecognized disclosure body keeps its runtime, close helper and wiring unprojected');
 $siblingHtml = str_replace('</body>', '<button type="button" hidden data-blocks-engine-capture-dialog-close="data-blocks-engine-capture-dialog-9" aria-label="Close leftover">Close</button></body>', $closeHtml);
 $sibling = $project($files(array('https://example.test/' => $siblingHtml), array('https://example.test/' => array($state($closeTrigger)))));
 $siblingMarkup = (string) ($sibling['files'][0]['content'] ?? '');
@@ -182,7 +187,7 @@
 // trigger sits beside an in-place hidden panel with a hidden close helper. Both
 // the matched trigger and one whose positional selector no longer matches must
 // bind natively so the wiring runtime is retired.
-$wiredRuntime = 'document.querySelectorAll("[data-blocks-engine-capture-dialog-trigger]");';
+$wiredRuntime = $publishedRuntime;
 $wiredPanel = static fn (string $key, string $body): string => '<div class="data-blocks-engine-capture-dialog" role="dialog" aria-modal="true" hidden id="' . $key . '" data-blocks-engine-capture-dialog-panel="' . $key . '">' . $body . '</div>';
 $wiredHtml = '<html><head><script data-blocks-engine-capture-disclosure-runtime="true">' . $wiredRuntime . '</script></head><body><main>'
     . '<header><button type="button" aria-label="Menu" data-blocks-engine-capture-disclosure-label="Menu" data-blocks-engine-capture-dialog-trigger="data-blocks-engine-capture-dialog-1" aria-controls="data-blocks-engine-capture-dialog-1" aria-expanded="false" aria-haspopup="menu">Menu</button>'
@@ -205,6 +210,10 @@
 $assert(array() === $codes($wired), 'no unmatched-trigger diagnostics are raised for wired triggers', implode(',', $codes($wired)));
 $assert(array() === array_values(array_filter($wired['files'], static fn (array $file): bool => 'website/index.inline-5.js' === ($file['path'] ?? ''))), 'the extracted wiring script is omitted');
 
+$alteredWiredHtml = str_replace($publishedRuntime, $alteredRuntime, $wiredHtml);
+$alteredWired = $project($files(array('https://example.test/' => $alteredWiredHtml), array('https://example.test/' => $wiredStates)));
+$assert(0 === ($alteredWired['projected_count'] ?? -1) && $alteredWiredHtml === ($alteredWired['files'][0]['content'] ?? null) && array() === ($alteredWired['native_runtime_replacements'] ?? array()), 'wired panels driven by an unrecognized disclosure body stay with that runtime');
+
 $sharedTrigger = static fn(string $label): string => '<button type="button" aria-label="' . $label . '" data-blocks-engine-capture-disclosure-label="' . $label . '" data-blocks-engine-capture-dialog-trigger="shared" aria-controls="shared" aria-haspopup="dialog">' . $label . '</button>';
 $sharedBody = $sharedTrigger('First') . $sharedTrigger('Second') . $wiredPanel('shared', '<div><p>Shared content</p></div>');
 $sharedStates = array($state(array('selector' => 'body > button:nth-of-type(1)', 'tag' => 'button', 'label' => 'First', 'ariaHaspopup' => 'dialog', 'dataBindings' => array())));
diff --git a/php-transformer/tests/unit/captured-dialog-text-trigger.php b/php-transformer/tests/unit/captured-dialog-text-trigger.php
new file mode 100644
index 000000000..b3c7707e0
--- /dev/null
+++ b/php-transformer/tests/unit/captured-dialog-text-trigger.php
@@ -0,0 +1,72 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * A text-labelled capture trigger keeps its native dialog.
+ *
+ * Once the recognized disclosure runtime is retired, its dropdown is a
+ * projected native dialog. A trigger with a text label and that panel also
+ * have the shape of a source aria disclosure, which lowers to core/details.
+ * core/details cannot close on Escape, keep the trigger's aria-expanded or
+ * replay ancestor bindings, all of which the retired runtime did, so the
+ * projected dialog stays a native dialog block. A source disclosure that no
+ * capture runtime drives still becomes core/details.
+ */
+
+require dirname(__DIR__, 2) . '/vendor/autoload.php';
+
+use Automattic\BlocksEngine\PhpTransformer\ArtifactCompiler\ArtifactCompiler;
+use Automattic\BlocksEngine\PhpTransformer\Contract\CaptureEvidence;
+use Automattic\BlocksEngine\PhpTransformer\HtmlToBlocks\HtmlTransformer;
+
+$failures = 0;
+$assert = static function (bool $condition, string $message, string $context = '') use (&$failures): void {
+    if ($condition) return;
+    ++$failures;
+    fwrite(STDERR, "FAIL: {$message}\n" . ('' !== $context ? substr($context, 0, 1600) . "\n" : ''));
+};
+
+$runtime = trim((string) file_get_contents(dirname(__DIR__) . '/fixtures/capture-disclosure-runtime.js'));
+$compile = static function (array $ancestors) use ($runtime): array {
+    $key = 'site-menu-panel';
+    $binding = array() === $ancestors ? '' : ' data-blocks-engine-capture-dialog-ancestor-state="' . htmlspecialchars(json_encode($ancestors, JSON_THROW_ON_ERROR), ENT_QUOTES) . '"';
+    $html = '<!doctype html><html><head><script data-blocks-engine-capture-disclosure-runtime="true">' . $runtime . '</script></head><body>'
+        . '<div id="scope" class="data-blocks-engine-capture-desktop-document" data-blocks-engine-capture-document-scope="">'
+        . '<header id="site-header" class="dark header"><div class="menu-host">'
+        . '<button type="button" data-blocks-engine-capture-disclosure-label="Menu" data-blocks-engine-capture-dialog-trigger="' . $key . '" aria-controls="' . $key . '" aria-expanded="false" aria-haspopup="menu"' . $binding . '>Menu</button>'
+        . '<div id="' . $key . '" class="menu-panel data-blocks-engine-capture-dropdown" hidden data-blocks-engine-capture-dialog-panel="' . $key . '"><div><p>Visit</p><a href="#one">One</a></div></div>'
+        . '</div></header><main><h2 id="one">One</h2></main></div></body></html>';
+    $state = array(
+        'status' => 'captured',
+        'trigger' => array('selector' => 'missing', 'label' => 'Menu', 'tag' => 'button', 'ariaHaspopup' => 'menu'),
+        'dialog' => array('html' => '<div>Report snapshot</div>', 'htmlBytes' => strlen('<div>Report snapshot</div>'), 'htmlTruncated' => false, 'presentation' => 'dropdown'),
+    );
+    return (new ArtifactCompiler())->compile(array('entrypoint' => 'website/index.html', 'files' => array(
+        array('path' => 'website/index.html', 'content' => $html),
+        array('path' => 'capture-receipt.json', 'content' => json_encode(array('schema' => CaptureEvidence::CAPTURE_RECEIPT_SCHEMA, 'routes' => array(array('url' => 'https://example.test/', 'path' => 'website/index.html'))))),
+        array('path' => 'interaction-states.json', 'content' => json_encode(array('schema' => CaptureEvidence::CAPTURED_INTERACTIONS_SCHEMA, 'pages' => array(array('sourceUrl' => 'https://example.test/', 'states' => array($state)))))),
+    )))->toArray();
+};
+$retired = static fn (array $result): bool => CaptureEvidence::DISCLOSURE_RUNTIME_SHA256 === (array_column($result['source_reports']['native_runtime_replacements'] ?? array(), 'body_hash', 'attribute')[CaptureEvidence::DISCLOSURE_RUNTIME] ?? null);
+
+// With an ancestor binding: the binding must reach the native dialog.
+$rows = array(array('selector' => '#site-header', 'tag' => 'header', 'depth' => 2, 'closed' => array('class' => 'dark header'), 'opened' => array('class' => 'light header')));
+$bound = $compile($rows);
+$boundMarkup = (string) ($bound['serialized_blocks'] ?? '');
+$assert($retired($bound), 'the published runtime is retired', json_encode($bound['source_reports']['native_runtime_replacements'] ?? null));
+$assert(!str_contains($boundMarkup, '<!-- wp:details') && 1 === substr_count($boundMarkup, '<!-- wp:custom/captured-dialog '), 'a text trigger with ancestor bindings keeps its native dialog instead of core/details', $boundMarkup);
+$assert(str_contains($boundMarkup, '"ancestorState":[{"tag":"header","closed":{"class":"dark header"},"opened":{"class":"light header"}}]'), 'the ancestor binding travels to the native dialog', $boundMarkup);
+
+// Without one: the retired runtime still closed the dropdown on Escape and
+// kept aria-expanded, which core/details does not.
+$plain = $compile(array());
+$plainMarkup = (string) ($plain['serialized_blocks'] ?? '');
+$assert($retired($plain) && !str_contains($plainMarkup, '<!-- wp:details') && 1 === substr_count($plainMarkup, '<!-- wp:custom/captured-dialog '), 'a text trigger without ancestor bindings keeps its native dialog too', $plainMarkup);
+$assert(0 === ($bound['metrics']['fallback_count'] ?? -1) && 0 === ($plain['metrics']['fallback_count'] ?? -1), 'both pages lower without fallback blocks');
+
+// A source disclosure that no capture runtime drives keeps core/details.
+$source = (new HtmlTransformer())->transform('<div><button aria-expanded="false" aria-controls="answer-1">What is your refund policy?</button><div id="answer-1" hidden><p>Full refund within 30 days.</p></div></div>')->toArray();
+$assert('core/details' === ($source['blocks'][0]['blockName'] ?? null), 'an uncaptured aria disclosure still becomes core/details');
+
+if (0 !== $failures) exit(1);
+echo "captured-dialog-text-trigger: ok\n";
diff --git a/php-transformer/tests/unit/captured-gallery-contract.php b/php-transformer/tests/unit/captured-gallery-contract.php
index f920c3677..6b869053f 100644
--- a/php-transformer/tests/unit/captured-gallery-contract.php
+++ b/php-transformer/tests/unit/captured-gallery-contract.php
@@ -12,7 +12,10 @@
 $full = $cycle(array('/full/c.png', '/full/a.png', '/full/b.png'), 2);
 $state = array('kind' => 'gallery', 'status' => 'captured', 'gallery' => array('inline' => $inline, 'lightbox' => $full, 'closed' => true, 'selection' => array(1, 2, 0)));
 $items = static fn(array $keys): string => implode('', array_map(static fn(string $key): string => '<div><img src="' . $key . '" alt="Image"></div>', $keys));
-$html = '<html><head><script data-blocks-engine-capture-gallery-runtime>window.captureGallery=true;</script></head><body><section id="pictures" data-blocks-engine-capture-gallery data-blocks-engine-capture-gallery-source="#pictures" data-blocks-engine-capture-gallery-capture-width="1440"><h2>Pictures</h2><div class="gallery carousel"><div id="stage" data-blocks-engine-capture-gallery-stage data-blocks-engine-capture-gallery-initial="1" data-blocks-engine-capture-dialog-trigger="panel" aria-controls="panel">' . $items(array('/inline/a.png', '/inline/b.png', '/inline/c.png')) . '</div><button aria-label="Previous image">Previous</button><button aria-label="Next image">Next</button></div><div id="panel" data-blocks-engine-capture-dialog-panel="panel" hidden><div data-blocks-engine-capture-gallery-stage>' . $items(array('/full/c.png', '/full/a.png', '/full/b.png')) . '</div></div></section></body></html>';
+// Only the published gallery runtime is retired with its native replacement.
+$galleryRuntime = trim((string) file_get_contents(dirname(__DIR__) . '/fixtures/capture-gallery-runtime.js'));
+$galleryScript = '<script data-blocks-engine-capture-gallery-runtime>' . $galleryRuntime . '</script>';
+$html = '<html><head>' . $galleryScript . '</head><body><section id="pictures" data-blocks-engine-capture-gallery data-blocks-engine-capture-gallery-source="#pictures" data-blocks-engine-capture-gallery-capture-width="1440"><h2>Pictures</h2><div class="gallery carousel"><div id="stage" data-blocks-engine-capture-gallery-stage data-blocks-engine-capture-gallery-initial="1" data-blocks-engine-capture-dialog-trigger="panel" aria-controls="panel">' . $items(array('/inline/a.png', '/inline/b.png', '/inline/c.png')) . '</div><button aria-label="Previous image">Previous</button><button aria-label="Next image">Next</button></div><div id="panel" data-blocks-engine-capture-dialog-panel="panel" hidden><div data-blocks-engine-capture-gallery-stage>' . $items(array('/full/c.png', '/full/a.png', '/full/b.png')) . '</div></div></section></body></html>';
 $report = array('schema' => 'blocks-engine-capture/captured-interactions/v1', 'pages' => array(array('sourceUrl' => 'https://neutral.test/', 'states' => array($state))));
 $receipt = array('schema' => 'blocks-engine-capture/capture-receipt/v1', 'routes' => array(array('url' => 'https://neutral.test/', 'path' => 'website/index.html')));
 $files = array('website/index.html' => $html, 'interaction-states.json' => json_encode($report), 'capture-receipt.json' => json_encode($receipt));
@@ -30,7 +33,16 @@
 $assert(array(array('triggerId' => 'stage', 'indices' => array(1, 2, 0))) === $dialogs[0]['attrs']['gallerySelection'], 'Observed image identities preserve rotated full-cycle selection');
 $assert('stage' === ($carousels[0]['attrs']['sourceIdentityAttributes']['id'] ?? ''), 'Source stage trigger identity survives native replacement');
 $assert(1 === $carousels[0]['attrs']['initialSlide'] && 2 === $carousels[1]['attrs']['initialSlide'], 'Viewport baseline and lightbox initial state survive compilation');
-$assert(!str_contains($markup, 'window.captureGallery'), 'Capture helper is retired, rather than carried as source JavaScript');
+$assert(!str_contains($markup, 'data-blocks-engine-capture-gallery-sequence') && !str_contains(json_encode($result['assets']), 'data-blocks-engine-capture-gallery-sequence'), 'Capture helper is retired, rather than carried as source JavaScript');
+$assert(array(CaptureEvidence::GALLERY_RUNTIME => CaptureEvidence::GALLERY_RUNTIME_SHA256) === array_column($result['source_reports']['native_runtime_replacements'] ?? array(), 'body_hash', 'attribute'), 'the published gallery runtime is retired with a native replacement proof', json_encode($result['source_reports']['native_runtime_replacements'] ?? null));
+// One changed byte makes the gallery body unknown: it keeps running, so the
+// page keeps the gallery wiring it drives and claims no native replacement.
+$alteredGalleryFiles = $files;
+$alteredGalleryFiles['website/index.html'] = str_replace('function all(selector,root){', 'function all( selector,root){', $html);
+$alteredGallery = (new ArtifactCompiler())->compile(array('entrypoint' => 'website/index.html', 'files' => $alteredGalleryFiles))->toArray();
+$assert(array() === ($alteredGallery['source_reports']['native_runtime_replacements'] ?? array()), 'an unrecognized gallery body is not retired', json_encode($alteredGallery['source_reports']['native_runtime_replacements'] ?? null));
+$assert(str_contains(json_encode($alteredGallery['assets']), 'function all( selector,root){'), 'the unrecognized gallery body ships with the page');
+$assert(!str_contains((string) $alteredGallery['serialized_blocks'], '/captured-dialog'), 'an unrecognized gallery body gets no native lightbox dialog');
 $assert($runtime->serializeBlocks($runtime->parseBlocks($markup)) === $markup, 'Native image/dialog tree has a canonical serialize/parse roundtrip');
 $wrappedHtml = str_replace(array('<body>', '</body>', '<div><img src="'), array('<body><div class="scroll">', '</div></body>', '<div class="frame active" data-blocks-engine-capture-gallery-display="block" hidden style="display:none!important"><img src="'), $html);
 $wrappedHtml = str_replace('class="gallery carousel"', 'class="gallery carousel" style="margin-left:auto!important;margin-right:auto!important"', $wrappedHtml);
@@ -58,9 +70,8 @@
 $mobile = (new DOMXPath($document))->query('//*[contains(@class,"data-blocks-engine-capture-mobile-document")]')->item(0);
 $mobileHtml = $document->saveHTML($mobile);
 $knownRuntime = trim((string) file_get_contents(dirname(__DIR__) . '/fixtures/capture-disclosure-runtime.js'));
-$galleryRuntime = trim((string) file_get_contents(dirname(__DIR__) . '/fixtures/capture-gallery-runtime.js'));
 $assert(CaptureEvidence::GALLERY_RUNTIME_SHA256 === hash('sha256', $galleryRuntime), 'the gallery fixture is the published gallery runtime');
-$coexistHtml = str_replace('<script data-blocks-engine-capture-gallery-runtime>window.captureGallery=true;</script>', '<script data-blocks-engine-capture-disclosure-runtime>' . $knownRuntime . '</script><script data-blocks-engine-capture-gallery-runtime>' . $galleryRuntime . '</script>', $html);
+$coexistHtml = str_replace($galleryScript, '<script data-blocks-engine-capture-disclosure-runtime>' . $knownRuntime . '</script>' . $galleryScript, $html);
 $coexistHtml = str_replace(array('<body>', '</body>'), array('<body><div class="data-blocks-engine-capture-desktop-document" data-blocks-engine-capture-document-scope="">', '</div>' . $mobileHtml . '</body>'), $coexistHtml);
 $coexistReport = array('schema' => 'blocks-engine-capture/captured-interactions/v1', 'pages' => array(array('sourceUrl' => 'https://neutral.test/', 'states' => array($state))));
 $coexistFiles = array('website/index.html' => $coexistHtml, 'interaction-states.json' => json_encode($coexistReport), 'capture-receipt.json' => json_encode($receipt));
@@ -83,4 +94,4 @@
 $coexistFiles['interaction-states.json'] = json_encode($coexistReport);
 $partial = (new ArtifactCompiler())->compile(array('entrypoint' => 'website/index.html', 'files' => $coexistFiles))->toArray();
 $assert(array() === array_filter($partial['source_reports']['native_runtime_replacements'] ?? array(), static fn(array $proof): bool => 'data-blocks-engine-capture-disclosure-runtime' === $proof['attribute']), 'an incomplete gallery prevents an all-native disclosure retirement claim');
-echo "Captured gallery producer/consumer contract passed (17 assertions)\n";
+echo "Captured gallery producer/consumer contract passed (21 assertions)\n";
diff --git a/php-transformer/tests/unit/navigation-button-dropdown-submenu.php b/php-transformer/tests/unit/navigation-button-dropdown-submenu.php
index cc0fe98f8..446b39782 100644
--- a/php-transformer/tests/unit/navigation-button-dropdown-submenu.php
+++ b/php-transformer/tests/unit/navigation-button-dropdown-submenu.php
@@ -66,9 +66,13 @@
 [ $actionProjected, $actionOut ] = $project($actionHtml, array('selector' => '#open', 'tag' => 'button', 'ariaHaspopup' => '', 'label' => 'Open the record', 'dataBindings' => array()), '<div role="dialog"><h2>Record</h2><p>Details</p></div>');
 $assert(1 === $actionProjected && str_contains($actionOut, '<dialog'), 'a plain action button still projects a native dialog', $actionOut);
 
-$wiredHeader = '<html><body>' . $header . '<script data-blocks-engine-capture-disclosure-runtime="true">document.querySelectorAll("[data-blocks-engine-capture-dialog-trigger]");</script><button type="button" hidden data-blocks-engine-capture-dialog-close="p-shop">Close</button></body></html>';
+$publishedRuntime = trim((string) file_get_contents(dirname(__DIR__) . '/fixtures/capture-disclosure-runtime.js'));
+$wiredHeader = '<html><body>' . $header . '<script data-blocks-engine-capture-disclosure-runtime="true">' . $publishedRuntime . '</script><button type="button" hidden data-blocks-engine-capture-dialog-close="p-shop">Close</button></body></html>';
 [ $handledCount, $handledHtml, $handledResult ] = $project($wiredHeader, array('selector' => '#shop', 'tag' => 'button', 'ariaHaspopup' => 'menu', 'label' => 'Shop', 'dataBindings' => array()), $linksHtml);
 $assert(0 === $handledCount && !str_contains($handledHtml, 'data-blocks-engine-capture-disclosure-runtime') && !str_contains($handledHtml, 'data-blocks-engine-capture-dialog-close'), 'a menu-only capture retires superseded wiring and close helpers without claiming a projected dialog', $handledHtml);
+// One changed byte makes the body unknown: the menu-only capture keeps it.
+[ , $alteredHtml, $alteredResult ] = $project(str_replace('function triggers(){', 'function triggers( ){', $wiredHeader), array('selector' => '#shop', 'tag' => 'button', 'ariaHaspopup' => 'menu', 'label' => 'Shop', 'dataBindings' => array()), $linksHtml);
+$assert(str_contains($alteredHtml, 'function triggers( ){') && array() === ($alteredResult['native_runtime_replacements'] ?? array()), 'a menu-only capture keeps an unrecognized disclosure body', $alteredHtml);
 $compiled = (new \Automattic\BlocksEngine\PhpTransformer\ArtifactCompiler\ArtifactCompiler())->compile(array('entrypoint' => 'website/index.html', 'files' => $handledResult['files']))->toArray();
 $assert(str_contains((string) ($compiled['serialized_blocks'] ?? ''), '<!-- wp:navigation-submenu') && !str_contains((string) ($compiled['serialized_blocks'] ?? ''), 'data-blocks-engine-captured-dialog'), 'the entire artifact pipeline keeps the menu as a native submenu');
 
diff --git a/php-transformer/tools/capture-evidence-equivalence/README.md b/php-transformer/tools/capture-evidence-equivalence/README.md
index 645c484f0..61da2d0c9 100644
--- a/php-transformer/tools/capture-evidence-equivalence/README.md
+++ b/php-transformer/tools/capture-evidence-equivalence/README.md
@@ -25,6 +25,38 @@ behavior. The gate is `tests/contract/capture-evidence-equivalence.php`, run by
   the checkout path, `*_duration_ms` wall-clock timings and the
   `engine_version` release stamp are neutralized.
 
+## Deliberate fidelity changes
+
+These cases no longer match the pre-move replay. Their expectations record this
+checkout's output, and each difference was checked against the pre-move
+replay by case:
+
+- **Runtime retirement requires the published body.** Every retirement path
+  now checks the runtime digest, and a page that carries an unrecognized
+  runtime body keeps that runtime and its wiring. The corpus inputs below carry
+  short stand-in bodies, not the published ones, so their pages are now left
+  as captured: no native dialog, gallery or submenu replacement, no retired
+  script, and no per-state projector diagnostics.
+  - Navigation submenu retirement of a stand-in disclosure body:
+    `07f8a0bd`, `1e87fd71`, `28e1a0f1`, `2f545afa`, `3e283668`, `647b8b53`,
+    `bab702ca`.
+  - Native dialog projection plus retirement of a stand-in disclosure body:
+    `3317930e`, `461f0a83`, `5eccb541`, `f67e5ca6`.
+  - Native gallery projection plus retirement of a stand-in gallery body:
+    `0bf7a2ea`, `12d3ff94`, `3b0aed43`, `62d3b1f8`, `8d155e3b`, `90115e60`,
+    `bcd4e29b`.
+  - Stand-in disclosure body, state diagnostics only
+    (`captured_dialog_trigger_unmatched`, `captured_dialog_unsafe_or_truncated`):
+    `6cdada86`, `6ed86c41`, `b913b3b4`, `eaad29ef`, `fcc75319`, `feef8efc`.
+- **Native dialog view script.** The captured-dialog view script replays
+  `aria-*`/`data-*` ancestor bindings. Only the emitted script text and the
+  hashes and sizes derived from it change in `0a9c1bea`, `15082c2d`,
+  `21e5cdbf`, `2915d21f`, `37284b0e`, `55b724ac`, `7a7af898`, `7c2d1217`,
+  `927aa368`, `944dd63d`, `df9c24a8`, `e5ea5743`.
+
+When regenerating from the pre-move commit, re-record these cases from the
+checkout that introduced them, and only after checking the difference again.
+
 ## Regenerating
 
 From `php-transformer/`, with disposable worktrees of the pre-move commit: