feat(freelancer-directory): add the trust block (what we do / don't)

The keyword work found no trust keyword with demand and none we could answer
without a review/vetting claim, so the trust content ships as a block on the
directory page itself. It folds the old "How this works" section and states
our limits plainly: you deal with the freelancer, we rank nobody, we verify
nothing (declarations tagged '(as declared)'), invitations carry a one-click
opt-out. The contract point links to the note under the listings instead of
copying it. No trust adjective is a claim; no review/rating/star.

odoo-community-developers/index.html

@@ -671,14 +671,18 @@
       </div>
     </section>
 
-    <!-- How this works (the client's view) -->
+    <!-- What we do / don't — a client's first question about the listings answered with
+         our limits, not with a claim about anyone. Folds the old "How this works" block;
+         the contract point links to the note under the listings rather than copying it. -->
     <section class="section-light">
       <div class="container">
-        <h2 class="section-title">How this works</h2>
+        <h2 class="section-title">What we do, and what we don't</h2>
         <div class="oc-body">
-          <p><strong>Write to a freelancer directly —</strong> each card carries what they published, and their contact details where they published them.</p>
-          <p><strong>Or email us your brief</strong> and we pass it to the freelancers you name.</p>
-          <p>Either way, the work is agreed between you and them.</p>
+          <p>You are about to write to someone you have not worked with before. Here is exactly what this page does, and what it does not.</p>
+          <p><strong>You deal with the freelancer, not us.</strong> Each card carries the contact details they chose to publish, and the brief, the price and the delivery are settled between the two of you; we are not a party, as <a href="#listing-note">the note under the listings</a> says. If you would rather not write first, email us your brief and we pass it to the freelancers you name.</p>
+          <p><strong>We rank nobody.</strong> Nothing here is graded: no score, no ranking, no "best" order. A listing is not a recommendation from us.</p>
+          <p><strong>We verify nothing.</strong> A card is that person's own words. Where a line is the freelancer's own declaration (that they work alone, that they are an OCA member), we label it (as declared): we pass it on, we do not check it.</p>
+          <p><strong>An invitation is one click to refuse.</strong> When a freelancer is suggested to us, we invite them once, we say who suggested them, and we give them a single click to opt out.</p>
         </div>
       </div>
     </section>
@@ -720,7 +724,7 @@
         </div>
         <p class="dir-empty" id="dirEmpty" hidden>No freelancer matches those filters. Clear them to see everyone.</p>
 
-        <div class="dir-note">
+        <div class="dir-note" id="listing-note">
           <p>You deal with the freelancer directly. The contract for the work is between you and them, and the terms, the price and the delivery are yours to agree. We are not a party to it — we publish the listings and, if you ask, pass your message along.</p>
         </div>
       </div>