docs: refresh every stale count to measured values + harden docs-counts gate (#10196)

* docs(reference): regenerate PROVIDER_REFERENCE from live provider modules

The catalog was hand-stale at 291 since 2026-08-05 while the live provider
modules define 338 unique IDs. The generator also omitted the NOAUTH_PROVIDERS
module entirely (10 providers) and hardcoded the executor count in its footer;
both are now sourced from the live modules.

Refs #9985

* docs: refresh stale counts across README/AGENTS/llm.txt and architecture docs

Every count updated to values measured from the live code on 2026-08-12:
providers 291/271/248/236/226/212->338, migrations 110/117/130->144, MCP tools
94/99/104->105 (base 42->43), scopes 13/32->31, strategies 17/18->19,
Auto-Combo factors 12/13->14 (sessionAvailability row added to the table),
executors 67/78/84/89->101, quality gates ~48->~80, locales 29/30/39/40+->43
(41 non-source), A2A skills 5->6 (list-capabilities), free tier 43 pools/516
models/~1.53B/~2.15B->42/495/~1.51B/~2.13B, contributors 500+->320+ (324
unique emails), llm.txt version 3.8.47->3.8.50. llm.txt i18n mirrors resynced
(headers preserved, body mirrored).

Refs #9985

* docs(diagrams): sync SVG hero/pillars/comparison/cli/tier numbers

Text nodes and aria-labels only; layout, coordinates and animation values
untouched. providers 278/290->338 (cli list footer 264->334 more), MCP tools
104->105, strategies 18->19, free tier 43 pools/460+/516 models->42/495,
headline ~1.53B/~2.15B->~1.51B/~2.13B. All six SVGs re-validated as XML.

Refs #9985

* feat(check): harden docs-counts gate - live provider source, llm.txt, migrations, SVGs

The gate trusted PROVIDER_REFERENCE.md as the provider total, so a hand-stale
doc (291 vs 338 live) kept it falsely green. New STRICT checks: doc total vs
the live provider modules (same collections the generator unions), provider
count in llm.txt and package.json description, migration count vs
README/AGENTS/llm.txt, and a canonical-number sweep (providers/MCP
tools/strategies/pools) over the six README SVG diagrams with
coordinate/attribute-safe patterns. TDD: 9 new unit tests (red first on the
missing exports, green after) in tests/unit/check-docs-counts-sync.test.ts.

Refs #9985

* docs(readme): refresh What's New range and add v3.8.50 cycle highlights

---------

Co-authored-by: backryun <bakryun0718@proton.me>

scripts/docs/gen-provider-reference.ts

@@ -7,6 +7,7 @@ import path from "node:path";
 import { fileURLToPath } from "node:url";
 import {
   FREE_PROVIDERS,
+  NOAUTH_PROVIDERS,
   OAUTH_PROVIDERS,
   WEB_COOKIE_PROVIDERS,
   APIKEY_PROVIDERS,
@@ -136,6 +137,7 @@ function buildHeader(total: number): string {
     "## Categories",
     "",
     "- **Free** — free tier with API key (configured via dashboard)",
+    "- **No-auth** — public endpoints that require no key or sign-in at all",
     "- **OAuth** — sign-in flow handled by OmniRoute, no API key needed",
     "- **Web cookie** — wraps the provider's web app via cookie auth",
     "- **API key** — paid provider configured via API key (free credits may apply)",
@@ -159,8 +161,19 @@ function buildHeader(total: number): string {
   ].join("\n");
 }
 
+function countExecutorImpls(): number {
+  const dir = path.join(ROOT, "open-sse", "executors");
+  const nonImpl = new Set(["index.ts", "index.mts", "types.ts", "base.ts", "constants.ts"]);
+  return fs
+    .readdirSync(dir)
+    .filter(
+      (f) => f.endsWith(".ts") && !f.endsWith(".test.ts") && !f.startsWith("__") && !nonImpl.has(f)
+    ).length;
+}
+
 function main() {
   const free = asRecords(FREE_PROVIDERS);
+  const noauth = asRecords(NOAUTH_PROVIDERS as Record<string, ProviderRecord>);
   const oauth = asRecords(OAUTH_PROVIDERS);
   const webCookie = asRecords(WEB_COOKIE_PROVIDERS);
   const apiKey = asRecords(APIKEY_PROVIDERS);
@@ -173,6 +186,7 @@ function main() {
 
   const allIds = new Set<string>([
     ...free.map((p) => p.id),
+    ...noauth.map((p) => p.id),
     ...oauth.map((p) => p.id),
     ...webCookie.map((p) => p.id),
     ...apiKey.map((p) => p.id),
@@ -186,6 +200,7 @@ function main() {
 
   const sections = [
     buildSection("Free Tier (OAuth-first or no-key)", free, "Free"),
+    buildSection("No-auth Providers (no key required)", noauth, "No-auth"),
     buildSection("OAuth Providers", oauth, "OAuth"),
     buildSection("Web Cookie Providers", webCookie, "Web cookie"),
     buildSection("API Key Providers (paid / paid-with-free-credits)", apiKey, "API key"),
@@ -202,7 +217,7 @@ function main() {
     "",
     "- Catalog: [`src/shared/constants/providers.ts`](../../src/shared/constants/providers.ts)",
     "- Registry (per-model details): [`open-sse/config/providerRegistry.ts`](../../open-sse/config/providerRegistry.ts)",
-    "- Executors: [`open-sse/executors/`](../../open-sse/executors/) (31 files)",
+    `- Executors: [\`open-sse/executors/\`](../../open-sse/executors/) (${countExecutorImpls()} implementations)`,
     "- Translators: [`open-sse/translator/`](../../open-sse/translator/)",
     "",
     "## See Also",
@@ -218,9 +233,10 @@ function main() {
   console.log(`✓ Wrote ${OUT_FILE}`);
   console.log(`  Providers: ${allIds.size} unique IDs`);
   console.log(
-    `  Sections: free=${free.length}, oauth=${oauth.length}, web=${webCookie.length}, ` +
-      `apikey=${apiKey.length}, local=${local.length}, search=${search.length}, ` +
-      `audio=${audio.length}, proxy=${upstreamProxy.length}, cloud=${cloudAgent.length}, system=${system.length}`
+    `  Sections: free=${free.length}, noauth=${noauth.length}, oauth=${oauth.length}, ` +
+      `web=${webCookie.length}, apikey=${apiKey.length}, local=${local.length}, ` +
+      `search=${search.length}, audio=${audio.length}, proxy=${upstreamProxy.length}, ` +
+      `cloud=${cloudAgent.length}, system=${system.length}`
   );
 }