fix: replace stale Free Tier with Demo tier in Terms of Service

- Section 2.1: Replace Free Tier with Demo (Free) - no account required,
  5 req/hour, testing and evaluation only, no SLA/support
- Section 5.1: Change 'no SLA for free tier' to 'no SLA for demo usage'
- Add terms-content test to verify no Free Tier references remain
- Rebuild public/terms.html via build-html.cjs

public/src/examples.html

@@ -294,25 +294,32 @@ response.<span class="fn">raise_for_status</span>()
       <h2>Go Integration</h2>
       <p><strong>SDK coming soon.</strong> In the meantime, use the HTTP example below — it works with any HTTP client.</p>
       <div class="code-block">
-        <span class="code-label">Go — Using the SDK</span>
+        <span class="code-label">Go — generate-pdf.go</span>
         <pre><code><span class="kw">package</span> main
 
 <span class="kw">import</span> (
+    <span class="str">"bytes"</span>
+    <span class="str">"encoding/json"</span>
+    <span class="str">"io"</span>
+    <span class="str">"net/http"</span>
     <span class="str">"os"</span>
-    docfast <span class="str">"github.com/docfast/docfast-go"</span>
 )
 
-<span class="kw">func</span> main() {
+<span class="kw">func</span> <span class="fn">main</span>() {
-    client := docfast.New(<span class="str">"df_pro_your_api_key"</span>)
+    body, _ := json.<span class="fn">Marshal</span>(<span class="kw">map</span>[<span class="kw">string</span>]<span class="kw">string</span>{
-
+        <span class="str">"html"</span>: <span class="str">"&lt;h1&gt;Hello&lt;/h1&gt;&lt;p&gt;Generated with DocFast&lt;/p&gt;"</span>,
-    pdf, err := client.HTML(<span class="str">"&lt;h1&gt;Hello&lt;/h1&gt;&lt;p&gt;Generated with DocFast&lt;/p&gt;"</span>, &amp;docfast.PDFOptions{
-        Format: <span class="str">"A4"</span>,
-        Margin: &amp;docfast.Margin{Top: <span class="str">"20mm"</span>, Bottom: <span class="str">"20mm"</span>},
     })
-    <span class="kw">if</span> err != <span class="kw">nil</span> {
+
-        panic(err)
+    req, _ := http.<span class="fn">NewRequest</span>(<span class="str">"POST"</span>, <span class="str">"https://docfast.dev/v1/convert/html"</span>, bytes.<span class="fn">NewReader</span>(body))
-    }
+    req.Header.<span class="fn">Set</span>(<span class="str">"Authorization"</span>, <span class="str">"Bearer "</span>+os.<span class="fn">Getenv</span>(<span class="str">"DOCFAST_API_KEY"</span>))
-    os.WriteFile(<span class="str">"output.pdf"</span>, pdf, <span class="num">0644</span>)
+    req.Header.<span class="fn">Set</span>(<span class="str">"Content-Type"</span>, <span class="str">"application/json"</span>)
+
+    resp, err := http.DefaultClient.<span class="fn">Do</span>(req)
+    <span class="kw">if</span> err != <span class="kw">nil</span> { <span class="fn">panic</span>(err) }
+    <span class="kw">defer</span> resp.Body.<span class="fn">Close</span>()
+
+    pdf, _ := io.<span class="fn">ReadAll</span>(resp.Body)
+    os.<span class="fn">WriteFile</span>(<span class="str">"output.pdf"</span>, pdf, <span class="num">0644</span>)
 }</code></pre>
       </div>
     </section>

src/__tests__/examples-http-only.test.ts

@@ -0,0 +1,27 @@
+import { describe, it, expect } from 'vitest';
+import { readFileSync } from 'fs';
+import { join } from 'path';
+
+describe('examples.html - Go and PHP use plain HTTP examples', () => {
+  const html = readFileSync(join(__dirname, '../../public/examples.html'), 'utf-8');
+
+  it('does NOT contain the fake Go SDK import', () => {
+    expect(html).not.toContain('github.com/docfast/docfast-go');
+  });
+
+  it('does NOT contain the fake PHP SDK class', () => {
+    expect(html).not.toContain('DocFast\\Client');
+  });
+
+  it('does NOT contain the fake Laravel facade', () => {
+    expect(html).not.toContain('DocFast\\Laravel');
+  });
+
+  it('contains Go net/http example', () => {
+    expect(html).toContain('net/http');
+  });
+
+  it('contains PHP file_get_contents example', () => {
+    expect(html).toContain('file_get_contents');
+  });
+});