docs: remove H1 on pages where frontmatter + summary already cover the parenthetical

docs/platforms/mac/bundled-gateway.md

@@ -7,8 +7,6 @@ read_when:
 title: "Gateway on macOS"
 ---
 
-# Gateway on macOS (external launchd)
-
 OpenClaw.app no longer bundles Node/Bun or the Gateway runtime. The macOS app
 expects an **external** `openclaw` CLI install, does not spawn the Gateway as a
 child process, and manages a per‑user launchd service to keep the Gateway

docs/platforms/mac/canvas.md

@@ -7,8 +7,6 @@ read_when:
 title: "Canvas"
 ---
 
-# Canvas (macOS app)
-
 The macOS app embeds an agent‑controlled **Canvas panel** using `WKWebView`. It
 is a lightweight visual workspace for HTML/CSS/JS, A2UI, and small interactive
 UI surfaces.

docs/platforms/mac/peekaboo.md

@@ -7,8 +7,6 @@ read_when:
 title: "Peekaboo bridge"
 ---
 
-# Peekaboo Bridge (macOS UI automation)
-
 OpenClaw can host **PeekabooBridge** as a local, permission‑aware UI automation
 broker. This lets the `peekaboo` CLI drive UI automation while reusing the
 macOS app’s TCC permissions.

docs/platforms/mac/permissions.md

@@ -7,8 +7,6 @@ read_when:
 title: "macOS permissions"
 ---
 
-# macOS permissions (TCC)
-
 macOS permission grants are fragile. TCC associates a permission grant with the
 app's code signature, bundle identifier, and on-disk path. If any of those change,
 macOS treats the app as new and may drop or hide prompts.