agents: drop the count and the coverage claim (FRE-359 verdict B)

FRE-359's verdict is B: the page's thirteen is the registry's first thirteen
of eighteen rows, so the count, "every coding agent The Nook supports" and
"Supported agents" all overstate or understate the app. The permitted
sentences are the CTO's, verbatim.

- agents.tsx: head description, ogTitle and H1 paragraph replaced with the
  verdict's sentences; title/H1 "Supported agents" -> "Agent coverage".
- agents.test.ts: the stale NOOK-336 guard asserted "all thirteen" and
  the 13-name roster, so it passed in lockstep with the page. It now asserts
  no count of any form, no completeness phrase, and that the rows are a
  subset of the 18-name registry list (copied 2026-10-29, @ f4258034) in
  registry order. The table still lists 13 rows; regenerating it from the
  registry is its own ticket, and the guard no longer pretends otherwise.
- FeatureBreakdowns.tsx / IslandExtras.tsx: the landing "13 agents:" bullet
  and the "13 agents" marquee chip lose the count; the chip becomes
  "Agents wired in".

bun test src/routes/nook/agents.test.ts: 4 pass. Server security and appcast
suites fail in this checkout on missing env (Environment validation failed /
mainDBConnection), unrelated to these files.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/routes/nook/agents.test.ts

@@ -1,5 +1,6 @@
 /**
- * Regression test for the /agents roster (NOOK-336).
+ * Regression test for the /agents roster (NOOK-336) and its coverage wording
+ * (FRE-359).
  *
  * The page mirrors the app's registry, `AgentSpec.all` in
  * the-nook/Sources/NookCore/Agents/AgentRegistry.swift. When Muse joined
@@ -8,6 +9,12 @@
  * them. The registry lives in another repo, so the expected roster is
  * restated here; when an agent is added there, add it here and on the page.
  *
+ * FRE-359 verdict B: the page no longer states a count or claims coverage
+ * ("all thirteen", "every coding agent The Nook supports"). The page still
+ * lists 13 of the registry's 18 rows — the table is hand-mirrored and its
+ * regeneration is its own ticket — so the roster check here is a subset
+ * check in registry order, not an equality check.
+ *
  * STATIC SOURCE AUDIT, the same pattern as the downloads regressions.
  */
 import { describe, it, expect } from "bun:test";
@@ -16,7 +23,10 @@ import { join } from "node:path";
 
 const SOURCE = readFileSync(join(import.meta.dir, "agents.tsx"), "utf8");
 
-/** AgentSpec.all display names, in registry order. */
+/** User-facing copy only: comments are not copy and may name the old wording. */
+const COPY = SOURCE.replace(/\/\*[\s\S]*?\*\//g, "").replace(/^\s*\/\/.*$/gm, "");
+
+/** AgentSpec.all display names, in registry order (18 rows). @ The-Nook f4258034, 2026-10-29 */
 const REGISTRY = [
   "Claude Code",
   "Codex",
@@ -30,25 +40,59 @@ const REGISTRY = [
   "Gemini CLI",
   "Cline",
   "Qwen Code",
-  "DeepSeek"
+  "DeepSeek",
+  "Kimi",
+  "GitHub Copilot CLI",
+  "Crush",
+  "Cursor",
+  "Amp"
 ];
 
-const NUMBER_WORDS = ["twelve", "thirteen", "fourteen", "fifteen"];
+const NUMBER_WORDS = ["twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen"];
 
 const entries = [...SOURCE.matchAll(/^\s{4}name: "([^"]+)",$/gm)].map((m) => m[1]);
 
+/** The page's rows are a subset of the registry, in registry order. */
+function subsetInOrder(page: string[], registry: string[]): boolean {
+  let cursor = 0;
+  for (const name of page) {
+    const at = registry.indexOf(name, cursor);
+    if (at === -1) return false;
+    cursor = at + 1;
+  }
+  return true;
+}
+
 describe("Nook /agents roster (NOOK-336)", () => {
-  it("lists every registry agent, in registry order", () => {
-    expect(entries).toEqual(REGISTRY);
+  it("lists only registry agents, in registry order", () => {
+    expect(entries.length).toBeGreaterThan(0);
+    expect(subsetInOrder(entries, REGISTRY)).toBe(true);
   });
 
-  it("states the same count everywhere it names one", () => {
-    const word = NUMBER_WORDS[entries.length - 12];
-    for (const other of NUMBER_WORDS.filter((w) => w !== word)) {
-      expect(SOURCE.toLowerCase()).not.toContain(other);
-    }
-    expect(SOURCE).toContain(`all ${word}`);
-    expect(SOURCE).toContain(`The ${entries.length} agents`);
-    expect(SOURCE).toContain(`watches ${word} coding agents`);
+  it("lists each agent at most once", () => {
+    expect(new Set(entries).size).toBe(entries.length);
+  });
+});
+
+describe("Nook /agents coverage wording (FRE-359)", () => {
+  it("states no agent count anywhere on the page", () => {
+    for (const word of NUMBER_WORDS) {
+      expect(COPY.toLowerCase()).not.toContain(word);
+    }
+    // A bare numeral count ("13 agents", "The 13") is just as precise and just
+    // as unverified; the page must not state one in any form.
+    expect(COPY).not.toMatch(/\b\d{1,2} agents\b/);
+    expect(COPY).not.toMatch(/\ball \d{1,2}\b/);
+  });
+
+  it("makes no completeness claim over the agent set", () => {
+    for (const banned of [
+      "every coding agent",
+      "the agents the nook supports",
+      "agents the nook supports",
+      "supported agents"
+    ]) {
+      expect(COPY.toLowerCase()).not.toContain(banned);
+    }
   });
 });