diff --git a/Makefile b/Makefile
index fd84e4d..1d27dd5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 EMACS ?= emacs
-LOAD_PATH = -L . -L ../etaf -L ../etaf-ui -L ../ebox -L ../ecss -L ../tp -L ../etaf-sqlite
+LOAD_PATH = -L . -L scripts -L ../etaf -L ../etaf-ui -L ../ebox -L ../ecss -L ../tp -L ../etaf-sqlite
 EBOX_NATIVE_RELEASE_DIR = $(shell $(EMACS) -Q --batch $(LOAD_PATH) \
 	--eval '(setq load-prefer-newer t)' -l ../ebox/ebox-native-reflow.el \
 	--eval '(princ (expand-file-name (format "../ebox/native/target/%s/release/" (ebox-native-reflow--rust-target))))')
@@ -9,7 +9,8 @@ EXAMPLE_ELC := $(EXAMPLES:.el=.elc)
 TEST_FILES := $(wildcard tests/*-tests.el)
 
 .PHONY: all compile examples-read test perf perf-prepare perf-evaluator perf-regressions \
-	perf-check check checkdoc load clean
+	perf-check gui-doctor gui-research gui-flex gui-grid gui-all \
+	check checkdoc load clean
 
 all: check
 
@@ -23,12 +24,14 @@ compile:
 	$(MAKE) -C ../etaf compile EMACS="$(EMACS)"
 	$(MAKE) -C ../etaf-ui compile EMACS="$(EMACS)"
 	$(MAKE) -C ../etaf-sqlite compile EMACS="$(EMACS)"
-	rm -f *.elc tests/*.elc $(EXAMPLE_ELC)
-	$(EMACS) -Q --batch $(LOAD_PATH) --eval '(setq load-prefer-newer t)' \
+	rm -f *.elc scripts/*.elc tests/*.elc $(EXAMPLE_ELC)
+	$(EMACS) -Q --batch $(LOAD_PATH) -L ../etaf/scripts -L ../ebox-playground \
+		--eval "(setq load-prefer-newer t byte-compile-error-on-warn t byte-compile-warnings '(not obsolete))" \
 		--eval '(load-file "etaf-playground.el")' \
 		--eval '(dolist (file (quote ($(foreach file,$(ENTRY_EXAMPLES),"$(file)")))) (load-file file))' \
 		--eval '(dolist (file (quote ($(foreach file,$(EXAMPLES),"$(file)")))) (byte-compile-file file))' \
 		--eval '(byte-compile-file "etaf-playground.el")' \
+		--eval '(byte-compile-file "scripts/playground-gui-scenarios.el")' \
 		--eval '(dolist (file (quote ($(foreach file,$(TEST_FILES),"$(file)")))) (byte-compile-file file))'
 
 examples-read: compile
@@ -76,14 +79,29 @@ perf-check:
 	$(MAKE) perf EMACS="$(EMACS)"
 	$(MAKE) perf-regressions EMACS="$(EMACS)"
 
+gui-doctor:
+	scripts/run-gui-verification.sh doctor
+
+gui-research:
+	scripts/run-gui-verification.sh research-shelf
+
+gui-flex:
+	scripts/run-gui-verification.sh flex-reference
+
+gui-grid:
+	scripts/run-gui-verification.sh grid-reference
+
+gui-all:
+	scripts/run-gui-verification.sh all
+
 load: compile
 	$(EMACS) -Q --batch $(LOAD_PATH) --eval '(require (quote etaf-playground))' \
 		--eval '(princ "etaf-playground load OK\\n")'
 
 checkdoc:
-	$(EMACS) -Q --batch --eval '(progn (require (quote checkdoc)) (dolist (file (append (list "etaf-playground.el" "scripts/benchmark-research-shelf.el") (directory-files-recursively "tests" "\\.el$$") (directory-files-recursively "examples" "\\.el$$"))) (checkdoc-file file)))'
+	$(EMACS) -Q --batch --eval '(progn (require (quote checkdoc)) (dolist (file (append (list "etaf-playground.el" "scripts/benchmark-research-shelf.el" "scripts/playground-gui-scenarios.el") (directory-files-recursively "tests" "\\.el$$") (directory-files-recursively "examples" "\\.el$$"))) (checkdoc-file file)))'
 
 check: checkdoc test
 
 clean:
-	rm -f *.elc tests/*.elc $(EXAMPLE_ELC)
+	rm -f *.elc scripts/*.elc tests/*.elc $(EXAMPLE_ELC)
diff --git a/README.md b/README.md
index 927cc32..14f2989 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,47 @@ The companion registers `:reload-on-refresh t`, so saving the `.el`, `.etaf`, or
 `.ecss` source and refreshing reloads the complete consumer before the next
 mount.
 
+## Repeatable Emacs 31.1 GUI verification
+
+The repository owns one stable real-GUI runner instead of relying on ad-hoc
+`emacsclient`, focus, and recording commands:
+
+```sh
+make gui-doctor
+make gui-research
+make gui-flex
+make gui-grid
+# Or capture all three sequentially:
+make gui-all
+```
+
+The reusable engine and process runner live in `../etaf/scripts/`. They know
+only Scenario, Action, Context, checkpoint, recording, and evidence contracts.
+`scripts/playground-gui-scenarios.el` is a thin adapter layer: Research Shelf
+defines its application actions, while Flex and Grid are two inputs to the same
+Ebox reference scenario factory. Adding another application does not create a
+second daemon/recording/checkpoint implementation.
+
+Each scenario creates a unique named daemon, disables native-comp JIT, loads
+the sibling repositories explicitly, creates one GUI frame, activates Emacs
+from the controlling shell, records through a PTY-backed macOS screen recorder,
+runs mount/resize/scroll/interaction checkpoints, writes screenshots and a
+manifest, then shuts down every process it created. Flex is always extracted
+from the committed `ebox-playground` HEAD, so a user's dirty fixture is never
+read, overwritten, staged, or restored.
+
+A fresh capture intentionally reports `INCOMPLETE` until a human or agent has
+inspected `report.md`, `contact-sheet.png`, and its selected endpoint images.
+After that temporal review, finalize the exact run directory:
+
+```sh
+scripts/run-gui-verification.sh review /private/tmp/etaf-playground-gui.XXXXXX
+```
+
+Only `VERDICT=PASS` is valid GUI evidence. Assertion failure, a black segment,
+missing recording, wrong buffer, split window, stale frame, or missing temporal
+review remains fail-closed.
+
 Run `make check EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs`.
 Run `make perf` for the fixed 1413×62 latency gate. Every scenario performs
 five unmeasured warmups followed by 30 measured samples; both p95 and max must
diff --git a/README.zh-CN.md b/README.zh-CN.md
index dc15ffe..339e3ad 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -58,6 +58,43 @@ examples/research-shelf.el    # DATA / THEME / STATE / VIEW / ROOT 分区
 该 companion 注册了 `:reload-on-refresh t`；保存 `.el`、`.etaf` 或 `.ecss` 后刷新
 source，会在下一次 mount 前重新加载完整 consumer。
 
+## 可重复执行的 Emacs 31.1 GUI 实测
+
+仓库提供一个稳定的真实 GUI runner，不再临时拼接 `emacsclient`、前台激活和录屏
+命令：
+
+```sh
+make gui-doctor
+make gui-research
+make gui-flex
+make gui-grid
+# 或按顺序采集三个场景：
+make gui-all
+```
+
+可复用的执行引擎与进程 runner 位于 `../etaf/scripts/`，只理解 Scenario、Action、
+Context、checkpoint、录屏和 evidence 合同。`scripts/playground-gui-scenarios.el` 只是
+薄适配层：Research Shelf 提供应用动作，Flex 与 Grid 只是同一个 Ebox reference
+scenario factory 的两个输入。增加新应用时不会复制第二套 daemon/录屏/checkpoint
+实现。
+
+每个场景都会创建唯一命名 daemon，关闭 native-comp JIT，显式加载 sibling 仓库，
+创建单一 GUI frame，由外层 shell 激活 Emacs，通过保留 PTY 的 macOS recorder 录屏，
+依次执行 mount/resize/scroll/interaction checkpoint，生成 screenshot 与 manifest，最后
+清理自己创建的全部进程。Flex 始终从已提交的 `ebox-playground` HEAD 解包，绝不读取、
+覆盖、暂存或 restore 用户的脏 fixture。
+
+新采集有意保持 `INCOMPLETE`，直到人或 agent 检查 `report.md`、
+`contact-sheet.png` 和报告选出的首尾图。完成时序审查后，对同一个 run directory
+执行：
+
+```sh
+scripts/run-gui-verification.sh review /private/tmp/etaf-playground-gui.XXXXXX
+```
+
+只有 `VERDICT=PASS` 才是有效 GUI 证据。assertion 失败、黑帧、录屏缺失、错误 buffer、
+split window、陈旧 frame 或没有完成时序审查都会保持 fail-closed。
+
 验证命令：`make check EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs`。
 性能门禁：`make perf`（1413×62 viewport 的 warm 选行/主题延迟）。
 
diff --git a/scripts/playground-gui-scenarios.el b/scripts/playground-gui-scenarios.el
new file mode 100644
index 0000000..8bf3390
--- /dev/null
+++ b/scripts/playground-gui-scenarios.el
@@ -0,0 +1,446 @@
+;;; playground-gui-scenarios.el --- Playground GUI verifier adapters -*- lexical-binding: t; -*-
+
+;;; Commentary:
+
+;; Concrete Research Shelf and Ebox reference adapters for the generic
+;; `emacs-gui-verifier' engine.  Process, recording, checkpoint ordering, and
+;; evidence lifecycle remain outside this file.
+
+;;; Code:
+
+(require 'emacs-gui-verifier)
+(require 'ebox-playground)
+(require 'etaf-playground)
+(require 'benchmark-research-shelf)
+(require 'ebox-native-reflow)
+
+(defun etaf-playground-gui-scenarios--report (context)
+  "Return CONTEXT target's public Ebox report, or nil before mount."
+  (let ((buffer (etaf-gui-verifier-context-target-buffer context)))
+    (when (and (buffer-live-p buffer)
+               (ebox-surface-buffer-mounted-p buffer))
+      (ebox-buffer-update-report buffer))))
+
+(defun etaf-playground-gui-scenarios--visible-window-content-p (context)
+  "Return non-nil when CONTEXT's selected window shows nonblank text."
+  (let* ((buffer (etaf-gui-verifier-context-target-buffer context))
+         (window (selected-window)))
+    (and (buffer-live-p buffer)
+         (window-live-p window)
+         (eq (window-buffer window) buffer)
+         (let ((start (window-start window))
+               (end (window-end window t)))
+           (and (integer-or-marker-p start)
+                (integer-or-marker-p end)
+                (< start end)
+                (with-current-buffer buffer
+                  (string-match-p
+                   "[^[:space:]]"
+                   (buffer-substring-no-properties start end))))))))
+
+(defun etaf-playground-gui-scenarios--buffer-text (context)
+  "Return CONTEXT target's complete plain buffer text."
+  (let ((buffer (etaf-gui-verifier-context-target-buffer context)))
+    (and (buffer-live-p buffer)
+         (with-current-buffer buffer
+           (buffer-substring-no-properties (point-min) (point-max))))))
+
+(defun etaf-playground-gui-scenarios--mounted-settled-p (context)
+  "Return non-nil when CONTEXT has a mounted, visibly rendered surface."
+  (let ((buffer (etaf-gui-verifier-context-target-buffer context)))
+    (and (buffer-live-p buffer)
+         (ebox-surface-buffer-mounted-p buffer)
+         (eq (frame-parameter nil 'fullscreen)
+             (etaf-gui-verifier-context-get context 'target-fullscreen))
+         (etaf-playground-gui-scenarios--visible-window-content-p context))))
+
+(defun etaf-playground-gui-scenarios--begin-viewport-change
+    (context fullscreen &optional width height)
+  "Record CONTEXT state before targeting FULLSCREEN, WIDTH, and HEIGHT."
+  (let ((report (etaf-playground-gui-scenarios--report context)))
+    (etaf-gui-verifier-context-put
+     context 'viewport-revision-before
+     (plist-get report :runtime-revision))
+    (etaf-gui-verifier-context-put context 'target-fullscreen fullscreen)
+    (etaf-gui-verifier-context-put context 'target-frame-width width)
+    (etaf-gui-verifier-context-put context 'target-frame-height height)))
+
+(defun etaf-playground-gui-scenarios--frame-target-settled-p (context)
+  "Return non-nil when the selected frame reached CONTEXT's target geometry."
+  (let ((fullscreen
+         (etaf-gui-verifier-context-get context 'target-fullscreen))
+        (width (etaf-gui-verifier-context-get context 'target-frame-width))
+        (height (etaf-gui-verifier-context-get context 'target-frame-height)))
+    (and (eq (frame-parameter nil 'fullscreen) fullscreen)
+         (or (not (numberp width)) (= (frame-text-width) width))
+         (or (not (numberp height)) (= (frame-text-height) height)))))
+
+(defun etaf-playground-gui-scenarios--viewport-settled-p (context)
+  "Return non-nil when CONTEXT published the selected window's viewport."
+  (let* ((report (etaf-playground-gui-scenarios--report context))
+         (actual (ebox-viewport-window-width (selected-window)))
+         (published (or (plist-get report :target-viewport-width)
+                        (plist-get report :viewport-width)))
+         (revision (plist-get report :runtime-revision))
+         (previous
+          (etaf-gui-verifier-context-get
+           context 'viewport-revision-before)))
+    (and (numberp actual)
+         (numberp published)
+         (= actual published)
+         (numberp revision)
+         (or (not (numberp previous)) (> revision previous))
+         (plist-get report :runtime-published)
+         (not (plist-get report :tp-scope-fallback))
+         (etaf-playground-gui-scenarios--frame-target-settled-p context)
+         (etaf-playground-gui-scenarios--visible-window-content-p context))))
+
+(defun etaf-playground-gui-scenarios--invariants (context)
+  "Return shared Ebox/ETAF publication invariants for CONTEXT."
+  (let* ((buffer (etaf-gui-verifier-context-target-buffer context))
+         (mounted (and (buffer-live-p buffer)
+                       (ebox-surface-buffer-mounted-p buffer)))
+         (text (and mounted
+                    (with-current-buffer buffer
+                      (buffer-substring-no-properties
+                       (point-min) (point-max))))))
+    (when (etaf-gui-verifier-context-get context 'expects-mounted)
+      (list
+       (etaf-gui-verifier-assert "surface-mounted" mounted)
+       (etaf-gui-verifier-assert
+        "rendered-output-nonempty" (and text (> (length text) 0)))
+       (etaf-gui-verifier-assert
+        "visible-output-nonempty"
+        (etaf-playground-gui-scenarios--visible-window-content-p context))
+       (etaf-gui-verifier-assert
+        "no-render-error"
+        (and text
+             (not (string-match-p
+                   "could not render\\|runtime error\\|Wrong type argument"
+                   text))))))))
+
+(defun etaf-playground-gui-scenarios--adapter (context)
+  "Return Playground-specific JSON data for CONTEXT."
+  (let* ((report (etaf-playground-gui-scenarios--report context))
+         (buffer (etaf-gui-verifier-context-target-buffer context))
+         (runtime (and (buffer-live-p buffer)
+                       (etaf-runtime-for-buffer buffer)))
+         (stage (plist-get report :stage)))
+    (list
+     (cons 'generation (if runtime (etaf-runtime-generation runtime) 0))
+     (cons 'viewport_width
+           (or (plist-get report :target-viewport-width)
+               (plist-get report :viewport-width)
+               0))
+     (cons 'frame_text_width (frame-text-width))
+     (cons 'frame_text_height (frame-text-height))
+     (cons 'fullscreen
+           (format "%s" (frame-parameter nil 'fullscreen)))
+     (cons 'target_frame_width
+           (or (etaf-gui-verifier-context-get
+                context 'target-frame-width)
+               0))
+     (cons 'target_frame_height
+           (or (etaf-gui-verifier-context-get
+                context 'target-frame-height)
+               0))
+     (cons 'stage (if stage (symbol-name stage) "none")))))
+
+(defun etaf-playground-gui-scenarios--resize (context width height)
+  "Resize CONTEXT's selected frame to pixel WIDTH and HEIGHT."
+  (etaf-playground-gui-scenarios--begin-viewport-change
+   context nil width height)
+  (let ((frame-resize-pixelwise t))
+    (set-frame-size nil width height t)))
+
+(defun etaf-playground-gui-scenarios--windowed-action ()
+  "Return an action that leaves fullscreen and publishes its viewport."
+  (etaf-gui-verifier-action-create
+   :id "leave-fullscreen"
+   :execute
+   (lambda (context)
+     (etaf-playground-gui-scenarios--begin-viewport-change context nil)
+     (set-frame-parameter nil 'fullscreen nil))
+   :settled-p #'etaf-playground-gui-scenarios--viewport-settled-p
+   :assertions #'etaf-playground-gui-scenarios--resize-assertions))
+
+(defun etaf-playground-gui-scenarios--resize-assertions (context)
+  "Return exact accepted-viewport assertions for CONTEXT."
+  (let* ((report (etaf-playground-gui-scenarios--report context))
+         (actual (ebox-viewport-window-width (selected-window)))
+         (published (or (plist-get report :target-viewport-width)
+                        (plist-get report :viewport-width))))
+    (list
+     (etaf-gui-verifier-assert
+      "viewport-published"
+      (and (numberp actual) (numberp published) (= actual published)
+           (plist-get report :runtime-published)))
+     (etaf-gui-verifier-assert
+      "resize-not-scope-fallback"
+      (not (plist-get report :tp-scope-fallback))))))
+
+(defun etaf-playground-gui-scenarios--resize-action (id width height)
+  "Return resize action ID for pixel WIDTH and HEIGHT."
+  (etaf-gui-verifier-action-create
+   :id id
+   :execute (lambda (context)
+              (etaf-playground-gui-scenarios--resize
+               context width height))
+   :settled-p #'etaf-playground-gui-scenarios--viewport-settled-p
+   :assertions #'etaf-playground-gui-scenarios--resize-assertions
+   :screenshot t))
+
+(defun etaf-playground-gui-scenarios--maximize-action ()
+  "Return a stable full-workarea viewport publication action."
+  (etaf-gui-verifier-action-create
+   :id "maximize-frame"
+   :execute
+   (lambda (context)
+     (etaf-playground-gui-scenarios--begin-viewport-change
+      context 'maximized)
+     (set-frame-parameter nil 'fullscreen 'maximized))
+   :settled-p #'etaf-playground-gui-scenarios--viewport-settled-p
+   :assertions #'etaf-playground-gui-scenarios--resize-assertions
+   :screenshot t))
+
+(defun etaf-playground-gui-scenarios--scroll-progressed-p (context)
+  "Return non-nil when CONTEXT's pending scroll changed visible state."
+  (or
+   (/= (etaf-gui-verifier-context-get
+        context 'scroll-window-start (window-start))
+       (window-start))
+   (not
+    (equal
+     (etaf-gui-verifier-context-get context 'scroll-report)
+     (etaf-playground-gui-scenarios--report context)))))
+
+(defun etaf-playground-gui-scenarios--scroll-settled-p (context)
+  "Return non-nil when CONTEXT's scroll progressed to visible content."
+  (and (etaf-playground-gui-scenarios--scroll-progressed-p context)
+       (etaf-playground-gui-scenarios--visible-window-content-p context)))
+
+(defun etaf-playground-gui-scenarios--scroll-action (id command)
+  "Return Ebox page-scroll action ID using public COMMAND."
+  (etaf-gui-verifier-action-create
+   :id id
+   :execute
+   (lambda (context)
+     (etaf-gui-verifier-context-put context 'scroll-window-start
+                                    (window-start))
+     (etaf-gui-verifier-context-put
+     context 'scroll-report
+      (etaf-playground-gui-scenarios--report context))
+     (with-current-buffer (etaf-gui-verifier-context-target-buffer context)
+       (goto-char (window-start)))
+     (funcall command))
+   :settled-p #'etaf-playground-gui-scenarios--scroll-settled-p
+   :assertions
+   (lambda (context)
+     (list
+      (etaf-gui-verifier-assert
+       "scroll-progressed"
+       (etaf-playground-gui-scenarios--scroll-progressed-p context))))
+   :screenshot t))
+
+(defun etaf-playground-gui-scenarios--reset-scroll-action ()
+  "Return an action that restores the outer Emacs window to its top."
+  (etaf-gui-verifier-action-create
+   :id "reset-scroll"
+   :execute
+   (lambda (_context)
+     (set-window-start (selected-window) (point-min))
+     (goto-char (point-min)))
+   :settled-p
+   (lambda (context)
+     (and (= (window-start) (point-min))
+          (etaf-playground-gui-scenarios--visible-window-content-p context)))
+   :assertions
+   (lambda (_context)
+     (list
+      (etaf-gui-verifier-assert
+       "scroll-reset" (= (window-start) (point-min)))))))
+
+(defun etaf-playground-gui-scenarios--research-event-action
+    (id reference postcondition &optional screenshot)
+  "Return Research action ID for REFERENCE, POSTCONDITION, and SCREENSHOT."
+  (etaf-gui-verifier-action-create
+   :id id
+   :execute
+   (lambda (context)
+     (let ((runtime
+            (etaf-runtime-for-buffer
+             (etaf-gui-verifier-context-target-buffer context))))
+       (etaf-gui-verifier-context-put
+        context (intern (concat id "-generation"))
+        (etaf-runtime-generation runtime))
+       (with-current-buffer
+           (etaf-gui-verifier-context-target-buffer context)
+         (etaf-focus runtime reference)
+         (execute-kbd-macro (kbd "RET")))))
+   :settled-p
+   (lambda (context)
+     (let ((runtime
+            (etaf-runtime-for-buffer
+             (etaf-gui-verifier-context-target-buffer context))))
+       (and runtime
+            (> (etaf-runtime-generation runtime)
+               (etaf-gui-verifier-context-get
+                context (intern (concat id "-generation")) -1))
+            (funcall postcondition context)
+            (etaf-playground-gui-scenarios--visible-window-content-p
+             context))))
+   :assertions
+   (lambda (context)
+     (let ((runtime
+            (etaf-runtime-for-buffer
+             (etaf-gui-verifier-context-target-buffer context))))
+       (list
+        (etaf-gui-verifier-assert
+         "generation-advanced"
+         (> (etaf-runtime-generation runtime)
+            (etaf-gui-verifier-context-get
+             context (intern (concat id "-generation")) -1)))
+        (etaf-gui-verifier-assert
+         "activated-host-focused"
+         (equal reference (etaf-focused-host-ref runtime)))
+        (etaf-gui-verifier-assert
+         "product-postcondition"
+         (funcall postcondition context)))))
+   :screenshot screenshot))
+
+(defun etaf-playground-gui-scenarios-research ()
+  "Return the Research Shelf GUI scenario adapter."
+  (etaf-gui-verifier-scenario-create
+     :name "research-shelf"
+     :claim "Research Shelf mounts, resizes, scrolls, and handles interactions"
+     :initialize
+     (lambda (context)
+       (etaf-gui-verifier-context-select-buffer
+        context (get-buffer-create "*ETAF GUI Research Shelf*")))
+     :invariants #'etaf-playground-gui-scenarios--invariants
+     :adapter #'etaf-playground-gui-scenarios--adapter
+     :actions
+     (list
+      (etaf-gui-verifier-action-create
+       :id "mount"
+       :execute
+       (lambda (context)
+         (etaf-gui-verifier-context-put context 'target-fullscreen 'maximized)
+         (set-frame-parameter nil 'fullscreen 'maximized)
+         (etaf-playground-refresh-examples)
+         (etaf-gui-verifier-context-select-buffer
+          context
+          (etaf-playground-open-example
+           "research-shelf" "*ETAF GUI Research Shelf*"))
+         (etaf-gui-verifier-context-put context 'expects-mounted t))
+       :settled-p #'etaf-playground-gui-scenarios--mounted-settled-p
+       :assertions
+       (lambda (context)
+         (list
+          (etaf-gui-verifier-assert
+           "runtime-mounted"
+           (etaf-runtime-for-buffer
+            (etaf-gui-verifier-context-target-buffer context)))))
+       :screenshot t)
+      (etaf-playground-gui-scenarios--windowed-action)
+      (etaf-playground-gui-scenarios--resize-action
+       "resize-narrow" 900 500)
+      (etaf-playground-gui-scenarios--scroll-action
+       "scroll-down" #'ebox-scroll-page-down)
+      (etaf-playground-gui-scenarios--reset-scroll-action)
+      (etaf-playground-gui-scenarios--resize-action
+       "resize-wide" 1300 750)
+      (etaf-playground-gui-scenarios--research-event-action
+       "row-select" 'research-shelf-row-2
+       (lambda (context)
+         (string-match-p
+          "John Berger · Book"
+          (etaf-playground-gui-scenarios--buffer-text context))))
+      (etaf-playground-gui-scenarios--research-event-action
+       "theme-toggle" 'research-shelf-theme-toggle
+       (lambda (context)
+         (string-match-p
+          "Dark theme"
+          (etaf-playground-gui-scenarios--buffer-text context)))
+       t)
+      (etaf-playground-gui-scenarios--research-event-action
+       "pagination" 'research-shelf-page-next
+       (lambda (context)
+         (let ((text
+                (etaf-playground-gui-scenarios--buffer-text context)))
+           (and (string-match-p "Page 2 /" text)
+                (string-match-p "13–24 of" text))))
+       t)
+      (etaf-playground-gui-scenarios--maximize-action))
+     :completion
+     (lambda (context)
+       (= (etaf-gui-verifier-context-action-count context) 10))))
+
+(defun etaf-playground-gui-scenarios-ebox (scenario fixture)
+  "Return one Ebox SCENARIO adapter for FIXTURE."
+  (etaf-gui-verifier-scenario-create
+     :name scenario
+     :claim "Ebox reference mounts, follows frame resize, and scrolls"
+     :initialize
+     (lambda (context)
+       (let ((source (find-file fixture)))
+         (ebox-dsl-mode)
+         (etaf-gui-verifier-context-select-buffer context source)))
+     :invariants #'etaf-playground-gui-scenarios--invariants
+     :adapter #'etaf-playground-gui-scenarios--adapter
+     :actions
+     (list
+      (etaf-gui-verifier-action-create
+       :id "mount"
+       :execute
+       (lambda (context)
+         (etaf-gui-verifier-context-put context 'target-fullscreen 'maximized)
+         (set-frame-parameter nil 'fullscreen 'maximized)
+         (etaf-gui-verifier-context-select-buffer context (ebox-dsl-render))
+         (etaf-gui-verifier-context-put context 'expects-mounted t))
+       :settled-p #'etaf-playground-gui-scenarios--mounted-settled-p
+       :assertions
+       (lambda (context)
+         (let ((preview (etaf-gui-verifier-context-target-buffer context)))
+           (list
+            (etaf-gui-verifier-assert
+             "preview-mounted"
+             (and (buffer-live-p preview)
+                  (ebox-surface-buffer-mounted-p preview))))))
+       :screenshot t)
+      (etaf-playground-gui-scenarios--windowed-action)
+      (etaf-playground-gui-scenarios--resize-action
+       "resize-narrow" 900 500)
+      (etaf-playground-gui-scenarios--scroll-action
+       "scroll-down" #'ebox-scroll-page-down)
+      (etaf-playground-gui-scenarios--reset-scroll-action)
+      (etaf-playground-gui-scenarios--resize-action
+       "resize-wide" 1300 750)
+      (etaf-playground-gui-scenarios--maximize-action))
+     :completion
+     (lambda (context)
+       (= (etaf-gui-verifier-context-action-count context) 7))))
+
+;;;###autoload
+(defun etaf-playground-gui-scenarios-run-from-environment ()
+  "Build one concrete adapter from environment and run the generic engine."
+  (unless (plist-get (ebox-native-reflow-runtime-report) :layout-ready-p)
+    (error "Prepared Ebox native module is unavailable"))
+  (let* ((scenario (or (getenv "ETAF_GUI_SCENARIO")
+                       (error "ETAF_GUI_SCENARIO is not configured")))
+         (run-directory (or (getenv "ETAF_GUI_RUN_DIR")
+                            (error "ETAF_GUI_RUN_DIR is not configured")))
+         (fixture (getenv "ETAF_GUI_FIXTURE"))
+         (adapter
+          (pcase scenario
+            ("research-shelf"
+             (etaf-playground-gui-scenarios-research))
+            ((or "flex-reference" "grid-reference")
+             (unless (and fixture (file-readable-p fixture))
+               (error "ETAF_GUI_FIXTURE is not readable"))
+             (etaf-playground-gui-scenarios-ebox scenario fixture))
+            (_ (error "Unknown Playground GUI scenario: %s" scenario)))))
+    (etaf-gui-verifier-run adapter run-directory)))
+
+(provide 'playground-gui-scenarios)
+;;; playground-gui-scenarios.el ends here
diff --git a/scripts/run-gui-verification.sh b/scripts/run-gui-verification.sh
new file mode 100755
index 0000000..c9cf813
--- /dev/null
+++ b/scripts/run-gui-verification.sh
@@ -0,0 +1,122 @@
+#!/bin/sh
+
+set -eu
+
+PLAYGROUND_SCRIPT_DIR=$(CDPATH= cd "$(dirname "$0")" && pwd)
+PLAYGROUND_DIR=$(dirname "$PLAYGROUND_SCRIPT_DIR")
+REPOS_DIR=$(dirname "$PLAYGROUND_DIR")
+GENERIC_RUNNER="$REPOS_DIR/etaf/scripts/run-emacs-gui-verification.sh"
+SCENARIO_ADAPTER="$PLAYGROUND_SCRIPT_DIR/playground-gui-scenarios.el"
+SCENARIO_ENTRY=etaf-playground-gui-scenarios-run-from-environment
+
+usage() {
+    echo "usage:" >&2
+    echo "  $0 doctor" >&2
+    echo "  $0 review RUN_DIR" >&2
+    echo "  $0 all [--run-dir DIRECTORY]" >&2
+    echo "  $0 research-shelf|flex-reference|grid-reference [--run-dir DIRECTORY]" >&2
+    exit 2
+}
+
+doctor() {
+    [ -x "$GENERIC_RUNNER" ] || {
+        echo "generic GUI runner is unavailable: $GENERIC_RUNNER" >&2
+        exit 1
+    }
+    [ -f "$SCENARIO_ADAPTER" ] || {
+        echo "Playground scenario adapter is unavailable: $SCENARIO_ADAPTER" >&2
+        exit 1
+    }
+    "$GENERIC_RUNNER" doctor
+    echo "PLAYGROUND-GUI-ADAPTER DOCTOR PASS"
+}
+
+parse_run_dir() {
+    SCENARIO_RUN_DIR=""
+    while [ "$#" -gt 0 ]; do
+        case $1 in
+            --run-dir)
+                [ "$#" -ge 2 ] || usage
+                SCENARIO_RUN_DIR=$2
+                shift 2
+                ;;
+            *) usage ;;
+        esac
+    done
+    if [ -z "$SCENARIO_RUN_DIR" ]; then
+        SCENARIO_RUN_DIR=$(mktemp -d /private/tmp/etaf-playground-gui.XXXXXX)
+    else
+        mkdir -p "$SCENARIO_RUN_DIR"
+    fi
+}
+
+prepare_fixture() {
+    case $SCENARIO_NAME in
+        research-shelf)
+            SCENARIO_FIXTURE=""
+            ;;
+        grid-reference)
+            SCENARIO_FIXTURE="$REPOS_DIR/ebox-playground/examples/grid-reference.ebox"
+            ;;
+        flex-reference)
+            SCENARIO_FIXTURE_ROOT="$SCENARIO_RUN_DIR/fixture"
+            mkdir -p "$SCENARIO_FIXTURE_ROOT"
+            git -C "$REPOS_DIR/ebox-playground" archive \
+                --format=tar --output="$SCENARIO_RUN_DIR/flex-fixture.tar" \
+                HEAD examples/flex-reference.ebox
+            tar -xf "$SCENARIO_RUN_DIR/flex-fixture.tar" \
+                -C "$SCENARIO_FIXTURE_ROOT"
+            SCENARIO_FIXTURE="$SCENARIO_FIXTURE_ROOT/examples/flex-reference.ebox"
+            ;;
+        *) usage ;;
+    esac
+}
+
+run_scenario() {
+    doctor >/dev/null
+    prepare_fixture
+    export ETAF_GUI_SCENARIO="$SCENARIO_NAME"
+    export ETAF_GUI_FIXTURE="$SCENARIO_FIXTURE"
+    "$GENERIC_RUNNER" run "$SCENARIO_ADAPTER" "$SCENARIO_ENTRY" \
+        --run-dir "$SCENARIO_RUN_DIR" \
+        --load-path "$REPOS_DIR/tp" \
+        --load-path "$REPOS_DIR/ecss" \
+        --load-path "$REPOS_DIR/ebox" \
+        --load-path "$REPOS_DIR/etaf" \
+        --load-path "$REPOS_DIR/etaf-ui" \
+        --load-path "$REPOS_DIR/etaf-sqlite" \
+        --load-path "$REPOS_DIR/ebox-playground" \
+        --load-path "$REPOS_DIR/ebox-playground/scripts" \
+        --load-path "$PLAYGROUND_DIR" \
+        --load-path "$PLAYGROUND_SCRIPT_DIR" \
+        --load-path "$PLAYGROUND_DIR/examples"
+}
+
+[ "$#" -ge 1 ] || usage
+COMMAND=$1
+shift
+
+case $COMMAND in
+    doctor)
+        [ "$#" -eq 0 ] || usage
+        doctor
+        ;;
+    review)
+        [ "$#" -eq 1 ] || usage
+        "$GENERIC_RUNNER" review "$1"
+        ;;
+    all)
+        parse_run_dir "$@"
+        ALL_RUN_ROOT=$SCENARIO_RUN_DIR
+        for SCENARIO_ITEM in research-shelf flex-reference grid-reference; do
+            "$0" "$SCENARIO_ITEM" --run-dir "$ALL_RUN_ROOT/$SCENARIO_ITEM"
+        done
+        echo "PLAYGROUND-GUI ALL CAPTURED root=$ALL_RUN_ROOT"
+        ;;
+    research-shelf|flex-reference|grid-reference)
+        SCENARIO_NAME=$COMMAND
+        parse_run_dir "$@"
+        run_scenario
+        ;;
+    *) usage ;;
+esac