feat(docs): expand ComponentGrid in llms.txt output

docs/app/_llms/__fixtures__/component-grid/basic.output.md

@@ -0,0 +1,8 @@
+## Buttons
+
+- [Action Button](https://example.com/llms/docs/components/action-button.txt) — 기본 인터랙션 컴포넌트입니다.
+- [Floating Action Button](https://example.com/llms/docs/components/floating-action-button.txt)
+
+## Controls
+
+- [Checkbox](https://example.com/llms/docs/components/checkbox.txt) — 옵션 선택 컴포넌트입니다.

docs/app/_llms/__fixtures__/component-grid/passthrough.input.mdx

@@ -0,0 +1 @@
+<SomethingElse />

docs/app/_llms/__fixtures__/component-grid/passthrough.output.mdx

@@ -0,0 +1 @@
+<SomethingElse />

docs/app/_llms/rules/component-grid-rule.test.ts

@@ -0,0 +1,44 @@
+import { describe, expect, it } from "bun:test";
+import { normalizeLLMBodyWithRules } from "../normalize-llm-body";
+import { normalizeForAssert, readFixture } from "../test-utils";
+import { buildMarkdown, componentGridRule, type ComponentEntry } from "./component-grid-rule";
+
+const sampleEntries: ComponentEntry[] = [
+  {
+    category: "Controls",
+    title: "Checkbox",
+    description: "옵션 선택 컴포넌트입니다.",
+    url: "https://example.com/llms/docs/components/checkbox.txt",
+  },
+  {
+    category: "Buttons",
+    title: "Floating Action Button",
+    description: "",
+    url: "https://example.com/llms/docs/components/floating-action-button.txt",
+  },
+  {
+    category: "Buttons",
+    title: "Action Button",
+    description: "기본 인터랙션 컴포넌트입니다.",
+    url: "https://example.com/llms/docs/components/action-button.txt",
+  },
+];
+
+describe("componentGridRule", () => {
+  it("renders categorized markdown from entries", () => {
+    const expected = readFixture("component-grid", "basic.output.md");
+
+    const actual = buildMarkdown(sampleEntries);
+
+    expect(normalizeForAssert(actual)).toBe(normalizeForAssert(expected));
+  });
+
+  it("non-target node passthrough", () => {
+    const input = readFixture("component-grid", "passthrough.input.mdx");
+    const expected = readFixture("component-grid", "passthrough.output.mdx");
+
+    const actual = normalizeLLMBodyWithRules(input, [componentGridRule]);
+
+    expect(normalizeForAssert(actual)).toBe(normalizeForAssert(expected));
+  });
+});

docs/app/_llms/rules/component-grid-rule.ts

@@ -0,0 +1,115 @@
+import fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import matter from "gray-matter";
+import type { MdxJsxFlowElement } from "mdast-util-mdx-jsx";
+import { baseUrl } from "@/app/metadata";
+import { getLLMMarkdownUrl } from "../config";
+import type { Rule } from "./types";
+
+export interface ComponentEntry {
+  category: string;
+  title: string;
+  description: string;
+  url: string;
+}
+
+type Frontmatter = {
+  title?: string;
+  description?: string;
+  deprecated?: boolean;
+};
+
+function resolveComponentsDir(): string | null {
+  const candidates = [
+    path.resolve(process.cwd(), "content/docs/components"),
+    path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../../../content/docs/components"),
+  ];
+  for (const candidate of candidates) {
+    if (fs.existsSync(candidate)) return candidate;
+  }
+  console.warn(`[ComponentGrid] components directory not found; tried: ${candidates.join(", ")}`);
+  return null;
+}
+
+function titleCase(value: string): string {
+  return value.charAt(0).toUpperCase() + value.slice(1);
+}
+
+function loadEntries(): ComponentEntry[] {
+  const componentsDir = resolveComponentsDir();
+  if (!componentsDir) return [];
+
+  const entries: ComponentEntry[] = [];
+  for (const dirent of fs.readdirSync(componentsDir, { withFileTypes: true })) {
+    if (!dirent.isDirectory()) continue;
+    const match = dirent.name.match(/^\(([^)]+)\)$/);
+    if (!match) continue;
+
+    const category = titleCase(match[1]);
+    const categoryDir = path.join(componentsDir, dirent.name);
+
+    for (const file of fs.readdirSync(categoryDir)) {
+      if (!file.endsWith(".mdx")) continue;
+
+      const source = fs.readFileSync(path.join(categoryDir, file), "utf8");
+      const fm = matter(source).data as Frontmatter;
+      if (fm.deprecated) continue;
+
+      const slug = file.slice(0, -".mdx".length);
+      entries.push({
+        category,
+        title: fm.title ?? slug,
+        description: fm.description ?? "",
+        url: new URL(getLLMMarkdownUrl("docs", ["components", slug]), baseUrl).toString(),
+      });
+    }
+  }
+  return entries;
+}
+
+let cachedEntries: ComponentEntry[] | null = null;
+
+function getEntries(): ComponentEntry[] {
+  if (cachedEntries === null) cachedEntries = loadEntries();
+  return cachedEntries;
+}
+
+export function buildMarkdown(entries: ComponentEntry[]): string {
+  const grouped = new Map<string, ComponentEntry[]>();
+  for (const entry of entries) {
+    if (!grouped.has(entry.category)) grouped.set(entry.category, []);
+    grouped.get(entry.category)!.push(entry);
+  }
+  for (const list of grouped.values()) {
+    list.sort((a, b) => a.title.localeCompare(b.title));
+  }
+
+  const sections: string[] = [];
+  for (const [category, list] of Array.from(grouped.entries()).sort(([a], [b]) =>
+    a.localeCompare(b),
+  )) {
+    const lines = [`## ${category}`, ""];
+    for (const entry of list) {
+      const suffix = entry.description ? ` — ${entry.description}` : "";
+      lines.push(`- [${entry.title}](${entry.url})${suffix}`);
+    }
+    sections.push(lines.join("\n"));
+  }
+  return sections.join("\n\n");
+}
+
+export const componentGridRule: Rule = {
+  name: "ComponentGrid",
+  match: (node): node is MdxJsxFlowElement =>
+    node.type === "mdxJsxFlowElement" && node.name === "ComponentGrid",
+  transform: (node) => {
+    try {
+      const entries = getEntries();
+      if (entries.length === 0) return [node];
+      return [{ type: "html", value: buildMarkdown(entries) }];
+    } catch {
+      return [node];
+    }
+  },
+};

docs/app/_llms/rules/index.ts

@@ -1,6 +1,7 @@
 import { changelogPageRule } from "./changelog-page-rule";
 import { codeBlockTabsRule } from "./codeblock-tabs-rule";
 import { componentExampleRule } from "./component-example-rule";
+import { componentGridRule } from "./component-grid-rule";
 import { platformStatusRule } from "./platform-status-rule";
 import { progressBoardRule } from "./progress-board-rule";
 import { typeTableRule } from "./type-table-rule";
@@ -17,6 +18,7 @@ export const activeRules: Rule[] = [
   platformStatusRule,
   progressBoardRule,
   iconLibraryRule,
+  componentGridRule,
   componentSpecBlockRule,
   changelogPageRule,
 ];
@@ -25,6 +27,7 @@ export {
   changelogPageRule,
   codeBlockTabsRule,
   componentExampleRule,
+  componentGridRule,
   typeTableRule,
   tokenReferenceRule,
   componentSpecBlockRule,