fix(website): drop 'In this article' TOC from resource detail pages

Resource detail pages (agent, instruction, skill, plugin, extension) are
not articles, and their markdown headings do not form a meaningful
outline. Playbook and cookbook articles keep their TOC.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 80686fef-efe3-4cdd-8cd6-bfa61a5d0af6

website/src/components/brand/AgentDetail.tsx

@@ -3,11 +3,7 @@ import React from "react";
 
 import { ActionMenu, Button } from "@primer/react-brand";
 
-import {
+import { DetailChassis, type DetailSibling } from "./DetailChassis";
-  DetailChassis,
-  type DetailSibling,
-  type DetailTocItem,
-} from "./DetailChassis";
 import { ResourceMeta } from "./ResourceMeta";
 import { pageHref } from "./pageHref";
 import type { SearchItem } from "./searchIndex";
@@ -29,7 +25,6 @@ export type AgentDetailProps = {
   item: AgentDetailItem;
   /** Rendered, sanitized markdown body with heading ids already stamped. */
   markdownHtml: string;
-  toc: DetailTocItem[];
   vscodeUrl: string;
   insidersUrl: string;
   githubUrl: string;
@@ -45,7 +40,6 @@ export type AgentDetailProps = {
 export function AgentDetail({
   item,
   markdownHtml,
-  toc,
   vscodeUrl,
   insidersUrl,
   githubUrl,
@@ -138,7 +132,6 @@ export function AgentDetail({
         { label: item.title },
       ]}
       install={install}
-      toc={toc}
       sidebar={
         <ResourceMeta
           kicker="Agent details"

website/src/components/brand/ExtensionDetail.tsx

@@ -9,11 +9,7 @@ import React from "react";
 
 import { Button, Token } from "@primer/react-brand";
 
-import {
+import { DetailChassis, type DetailSibling } from "./DetailChassis";
-  DetailChassis,
-  type DetailSibling,
-  type DetailTocItem,
-} from "./DetailChassis";
 import { ResourceMeta } from "./ResourceMeta";
 import { pageHref } from "./pageHref";
 import type { SearchItem } from "./searchIndex";
@@ -42,7 +38,6 @@ export type ExtensionDetailProps = {
   images: ExtensionDetailImage[];
   /** Rendered, sanitized README with heading ids already stamped. */
   markdownHtml: string;
-  toc: DetailTocItem[];
   /** `ghapp://` deep link — absent for external extensions. */
   installUrl?: string | null;
   /** Copilot CLI command — absent for external extensions. */
@@ -103,7 +98,6 @@ export function ExtensionDetail({
   item,
   images,
   markdownHtml,
-  toc,
   installUrl,
   installCommand,
   sourceUrl,
@@ -154,10 +148,6 @@ export function ExtensionDetail({
       </div>
     ) : null;
 
-  const fullToc = hasPreview
-    ? [{ id: PREVIEW_SECTION_ID, label: "Preview" }, ...toc]
-    : toc;
-
   return (
     <DetailChassis
       title={item.name}
@@ -168,7 +158,6 @@ export function ExtensionDetail({
       ]}
       install={install}
       heroExtras={heroExtras}
-      toc={fullToc}
       sidebar={
         <ResourceMeta
           kicker="Extension details"

website/src/components/brand/InstructionDetail.tsx

@@ -3,11 +3,7 @@ import React from "react";
 
 import { ActionMenu, Button, Token } from "@primer/react-brand";
 
-import {
+import { DetailChassis, type DetailSibling } from "./DetailChassis";
-  DetailChassis,
-  type DetailSibling,
-  type DetailTocItem,
-} from "./DetailChassis";
 import { ResourceMeta } from "./ResourceMeta";
 import { pageHref } from "./pageHref";
 import type { SearchItem } from "./searchIndex";
@@ -28,7 +24,6 @@ export type InstructionDetailProps = {
   item: InstructionDetailItem;
   /** Rendered, sanitized markdown body with heading ids already stamped. */
   markdownHtml: string;
-  toc: DetailTocItem[];
   /** `chat-instructions` VS Code install URL (see src/lib/detail-page.ts). */
   vscodeUrl: string;
   insidersUrl: string;
@@ -45,7 +40,6 @@ export type InstructionDetailProps = {
 export function InstructionDetail({
   item,
   markdownHtml,
-  toc,
   vscodeUrl,
   insidersUrl,
   githubUrl,
@@ -144,7 +138,6 @@ export function InstructionDetail({
       ]}
       install={install}
       heroExtras={heroExtras}
-      toc={toc}
       sidebar={
         <ResourceMeta
           kicker="Instruction details"

website/src/components/brand/PluginDetail.tsx

@@ -15,11 +15,7 @@ import {
 import { clsx } from "clsx";
 
 import type { ExternalSource } from "../../lib/external-source";
-import {
+import { DetailChassis, type DetailSibling } from "./DetailChassis";
-  DetailChassis,
-  type DetailSibling,
-  type DetailTocItem,
-} from "./DetailChassis";
 import { ResourceMeta } from "./ResourceMeta";
 import { pageHref } from "./pageHref";
 import type { SearchItem } from "./searchIndex";
@@ -57,7 +53,6 @@ export type PluginDetailProps = {
   item: PluginDetailItem;
   /** Rendered, sanitized README with heading ids already stamped. */
   markdownHtml: string;
-  toc: DetailTocItem[];
   /** GitHub URL for the plugin source (repo tree, or the external repo). */
   githubUrl: string;
   /** Copilot CLI command that installs this plugin. */
@@ -104,7 +99,6 @@ function itemTitle(item: PluginIncludedItem): string {
 export function PluginDetail({
   item,
   markdownHtml,
-  toc,
   githubUrl,
   installCommand,
   lastUpdated,
@@ -182,10 +176,6 @@ export function PluginDetail({
     </div>
   );
 
-  const chassisToc: DetailTocItem[] = hasContents
-    ? [{ id: "plugin-contents", label: "What's included" }, ...toc]
-    : toc;
-
   return (
     <DetailChassis
       title={item.name}
@@ -196,7 +186,6 @@ export function PluginDetail({
       ]}
       install={install}
       heroExtras={heroExtras}
-      toc={chassisToc}
       sidebar={
         <ResourceMeta
           kicker="Plugin details"

website/src/components/brand/SkillDetail.tsx

@@ -10,11 +10,7 @@ import React from "react";
 
 import { Button, Text } from "@primer/react-brand";
 
-import {
+import { DetailChassis, type DetailSibling } from "./DetailChassis";
-  DetailChassis,
-  type DetailSibling,
-  type DetailTocItem,
-} from "./DetailChassis";
 import { ResourceMeta } from "./ResourceMeta";
 import {
   SyntaxHighlightedCode,
@@ -51,7 +47,6 @@ export type SkillDetailProps = {
   item: SkillDetailItem;
   /** Rendered, sanitized SKILL.md body with heading ids already stamped. */
   markdownHtml: string;
-  toc: DetailTocItem[];
   /** GitHub tree URL for the skill folder. */
   githubUrl: string;
   /** `https://github.com/.../blob/main` — per-file links are built from this. */
@@ -143,7 +138,6 @@ function encodeRepoPath(filePath: string): string {
 export function SkillDetail({
   item,
   markdownHtml,
-  toc,
   githubUrl,
   githubBlobBase,
   rawBase,
@@ -299,8 +293,6 @@ export function SkillDetail({
           />
         </div>
       }
-      /* Anchors only exist while SKILL.md is on screen. */
-      toc={isPrimary ? toc : []}
       sidebar={
         <ResourceMeta
           kicker="Skill details"

website/src/pages/agent/[id].astro

@@ -40,7 +40,7 @@ const { item, previous, next } = Astro.props as {
 };
 
 const detail = loadDetailPage(item, "agent");
-const { html, toc } = buildDetailToc(detail.markdownHtml);
+const { html } = buildDetailToc(detail.markdownHtml);
 
 const base = import.meta.env.BASE_URL ?? "/";
 const prefix = base.endsWith("/") ? base : base + "/";
@@ -61,7 +61,6 @@ const downloadUrl = RAW_BASE + "/" + item.path;
     client:load
     item={item as any}
     markdownHtml={html}
-    toc={toc}
     vscodeUrl={detail.vscodeUrl}
     insidersUrl={detail.insidersUrl}
     githubUrl={detail.githubUrl}

website/src/pages/extension/[id].astro

@@ -104,7 +104,7 @@ const images = Array.from(
 const { markdownHtml } = item.readmeFile
   ? readResourceMarkdown(item.readmeFile)
   : { markdownHtml: "" };
-const { html, toc } = buildDetailToc(markdownHtml);
+const { html } = buildDetailToc(markdownHtml);
 
 const lastUpdated = formatLastUpdated(item.lastUpdated ?? null);
 
@@ -139,7 +139,6 @@ const siblingOf = (sibling?: ExtensionItem) =>
     item={item}
     images={images}
     markdownHtml={html}
-    toc={toc}
     installUrl={appInstallUrl}
     installCommand={item.external ? null : item.installCommand}
     sourceUrl={sourceUrl}

website/src/pages/instruction/[id].astro

@@ -40,7 +40,7 @@ const { item, previous, next } = Astro.props as {
 };
 
 const detail = loadDetailPage(item, "instruction");
-const { html, toc } = buildDetailToc(detail.markdownHtml);
+const { html } = buildDetailToc(detail.markdownHtml);
 
 const base = import.meta.env.BASE_URL ?? "/";
 const prefix = base.endsWith("/") ? base : base + "/";
@@ -61,7 +61,6 @@ const downloadUrl = RAW_BASE + "/" + item.path;
     client:load
     item={item as any}
     markdownHtml={html}
-    toc={toc}
     vscodeUrl={detail.vscodeUrl}
     insidersUrl={detail.insidersUrl}
     githubUrl={detail.githubUrl}

website/src/pages/plugin/[id].astro

@@ -61,7 +61,7 @@ const { markdownHtml } = item.readmeFile
   ? readResourceMarkdown(item.readmeFile)
   : { markdownHtml: "" };
 
-const { html, toc } = buildDetailToc(markdownHtml);
+const { html } = buildDetailToc(markdownHtml);
 
 const githubUrl = item.external
   ? externalRepoUrl(item.source, [item.repository, item.homepage, GITHUB_TREE])
@@ -90,7 +90,6 @@ const siblingOf = (sibling?: PluginItem) =>
     client:load
     item={item}
     markdownHtml={html}
-    toc={toc}
     githubUrl={githubUrl}
     installCommand={installCommand}
     lastUpdated={lastUpdated}

website/src/pages/skill/[id].astro

@@ -54,7 +54,7 @@ const { item, previous, next } = Astro.props as {
 const { markdownHtml, rawMarkdown } = readResourceMarkdown(item.skillFile);
 const lastUpdated = formatLastUpdated(item.lastUpdated);
 
-const { html, toc } = buildDetailToc(markdownHtml);
+const { html } = buildDetailToc(markdownHtml);
 
 const githubUrl = `${GITHUB_TREE_BASE}/${item.path}`;
 const installCommand = `gh skills install ${REPO_IDENTIFIER} ${item.id}`;
@@ -72,7 +72,6 @@ const siblingOf = (sibling?: SkillItem) =>
     client:load
     item={item}
     markdownHtml={html}
-    toc={toc}
     githubUrl={githubUrl}
     githubBlobBase={GITHUB_BLOB_BASE}
     rawBase={RAW_BASE}