Let narrative text span the full container width on every page

The shared .drill-view .narrative rule capped text at 60ch, which only
Conferences had overridden with max-width: none. Removed the cap globally
instead of overriding it per-view, and dropped the now-unneeded Conferences
override. Also removes the leftover "[Placeholder narrative — edit me.]"
markers from Marketing, Social Media, Sales, and Market Intelligence.

index.html

@@ -324,9 +324,8 @@
   .drill-view h2 { margin: 0 0 12px; font-size: 1.3rem; font-weight: 800; color: #1b3a5c; }
   .drill-view .narrative {
     font-size: 0.95rem; line-height: 1.65; color: #3d4c5c;
-    max-width: 60ch; margin: 0 0 24px;
+    max-width: none; margin: 0 0 24px;
   }
-  .drill-view[data-view="conferences"] .narrative { max-width: none; }
   .drill-actions { display: flex; align-items: center; gap: 12px; }
   .drill-next, .drill-back {
     font-family: inherit; font-size: 0.85rem; font-weight: 700; cursor: pointer;
@@ -4492,12 +4491,12 @@
 
         <div class="drill-view active" data-view="marketing-root">
           <h2>Marketing</h2>
-          <p class="narrative">Marketing covers every channel TXproducts uses to reach an audience and build the brand. Today that's Social Media, reachable from the dropdown above; more channels (content, events, campaigns) will land here as the department grows. [Placeholder narrative — edit me.]</p>
+          <p class="narrative">Marketing covers every channel TXproducts uses to reach an audience and build the brand. Today that's Social Media, reachable from the dropdown above; more channels (content, events, campaigns) will land here as the department grows.</p>
         </div>
 
         <div class="drill-view" data-view="linkedin">
           <h2>LinkedIn</h2>
-          <p class="narrative">Follower growth, content performance, and visitor traffic for the TXproducts LinkedIn Page — the full breakdown lives in its own dashboard, built and maintained separately. [Placeholder narrative — edit me.]</p>
+          <p class="narrative">Follower growth, content performance, and visitor traffic for the TXproducts LinkedIn Page — the full breakdown lives in its own dashboard, built and maintained separately.</p>
           <div class="drill-actions">
             <button class="drill-back" data-target="marketing-root">← Marketing</button>
             <a class="open-link" href="http://localhost:8051" target="_blank" rel="noopener">Open Dash ↗</a>
@@ -4530,7 +4529,7 @@
 
         <div class="drill-view active" data-view="sales-root">
           <h2>Sales</h2>
-          <p class="narrative">Sales is where research turns into contracts. Today that's the Market Intelligence research; the Address Book (outreach board) will land here too once it's built. [Placeholder narrative — edit me.]</p>
+          <p class="narrative">Sales is where research turns into contracts. Today that's the Market Intelligence research; the Address Book (outreach board) will land here too once it's built.</p>
           <div class="drill-actions">
             <button class="drill-next" data-target="market-intelligence">Market Intelligence →</button>
           </div>
@@ -4538,7 +4537,7 @@
 
         <div class="drill-view" data-view="market-intelligence">
           <h2>Market Intelligence</h2>
-          <p class="narrative">Competitor profiles, prospect pitch angles, and sourced market research that inform outreach messaging and hesitations — the full research lives in its own site, built and maintained separately. [Placeholder narrative — edit me.]</p>
+          <p class="narrative">Competitor profiles, prospect pitch angles, and sourced market research that inform outreach messaging and hesitations — the full research lives in its own site, built and maintained separately.</p>
           <div class="drill-actions">
             <button class="drill-back" data-target="sales-root">← Sales</button>
             <a class="open-link" href="market-intelligence/index.html" target="_blank" rel="noopener">Open Market Intelligence ↗</a>