Name the bounded frame: fill:true on the shell, and the contract minor that ships it

README.md

@@ -47,7 +47,7 @@ folder under `plugins/` goes live after a restart. Create `plugins/hello/plugin.
 import { definePlugin } from "@plainpages/plugin-api";
 
 export default definePlugin({
-  apiVersion: "0.3.0",
+  apiVersion: "0.4.0",
   nav: [{ href: "/hello", id: "hello", label: "Hello", public: true }],
   routes: [
     { method: "GET", path: "/", public: true, handler: () => ({ html: "<h1>Hello from my plugin</h1>" }) },
@@ -350,7 +350,7 @@ import { definePlugin } from "@plainpages/plugin-api";
 import { listThings, createThings } from "./handlers.ts";
 
 export default definePlugin({
-  apiVersion: "0.3.0",                // semver string of the host contract this plugin was built against (see Versioning)
+  apiVersion: "0.4.0",                // semver string of the host contract this plugin was built against (see Versioning)
 
   // Nav fragment, merged into the global menu and gate-filtered per user.
   // `icon` is a Lucide icon by its sprite id (src/ui/icons.ts).
@@ -471,7 +471,7 @@ import { definePlugin } from "@plainpages/plugin-api";
 import { landing, board } from "./pages.ts";
 
 export default definePlugin({
-  apiVersion: "0.3.0",
+  apiVersion: "0.4.0",
   home: landing,     // owns "/" — the public front page
   dashboard: board,  // owns "/dashboard" — the post-login app home
 });
@@ -757,7 +757,7 @@ camel humps both becoming underscores — so `upstream` on the `scheduling` plug
 
 ```ts
 export default definePlugin({
-  apiVersion: "0.3.0",
+  apiVersion: "0.4.0",
   settings: [
     { key: "upstream", type: "url", required: true, description: "Base URL of the backend" },
     { key: "pageSize", type: "number", default: 25 },
@@ -811,7 +811,7 @@ import { definePlugin } from "@plainpages/plugin-api";
 let sql: ReturnType<typeof postgres>;
 
 export default definePlugin({
-  apiVersion: "0.3.0",
+  apiVersion: "0.4.0",
   storage: true,
   hooks: {
     onBoot: async (boot) => {
@@ -934,8 +934,10 @@ anonymous visitor. The sidebar collapses to a burger on a narrow screen; a page
 chrome-free layout opts out with the shell's `menu: false`.
 
 **The document scrolls.** The sidebar and topbar stay put on their own, and a page is reachable
-below the fold without adding a scroll region. A region that should scroll *inside* the page — a
-board of full-height columns, a table whose header stays put — sets its own height and `overflow`.
+below the fold without adding a scroll region of its own. A page that is a bounded frame instead — a
+board of full-height columns, a table whose header must stay put — passes **`fill: true`** to the
+shell: the viewport becomes the page, and a region inside it scrolls. `data-table`'s sticky header
+needs it, since a header can only stick to a scrollport that moves.
 
 ## Building blocks