修复 Studio 失败测试并新增合并门禁

把丢失的 box 录像放回 apps/studio/tests/data/，修掉第 3 节 3–10 号与两处过时测试桩，
注册 timing 标记并让根目录收集零错误；新增 tools/gate.ps1 与可选的 pre-push 钩子。
验证：studio 524 通过 19 跳过、shared 467 通过 18 跳过、ui_check 632 项 0 失败、gate.ps1 退出码 0。
细节见 docs/test-repair-plan.zh.md。

.githooks/pre-push

@@ -0,0 +1,16 @@
+#!/bin/sh
+# Optional pre-push gate for orisys-app — not installed automatically.
+#
+#     git config core.hooksPath .githooks      # turn it on
+#     git config --unset core.hooksPath        # turn it off
+#
+# It runs the full merge gate (tools/gate.ps1: lint on the changed files, the studio
+# suite, the shared suite, ui_check.py) and blocks the push when the gate fails. The
+# gate needs Windows: it renders real Qt widgets offscreen with the project's
+# interpreter. See tools/gate.ps1 and docs/test-repair-plan.zh.md §4.
+#
+# Windows PowerShell is used rather than pwsh so the hook works on a machine that only
+# has the one PowerShell every Windows installation carries.
+set -e
+cd "$(git rev-parse --show-toplevel)"
+exec powershell.exe -NoProfile -ExecutionPolicy Bypass -File tools/gate.ps1 -Task pre-push