docs: refresh pipeline overview + infographic for drawing-focus overhaul

- Specialists: Drawing Checker replaces Code Inspector as headline; code noted
  as off-by-default.
- Detectives now catch within-sheet contradictions.
- Add wave 6.5 Brain double-check step; mark shipped items in improvements.
- Regenerate infographic PNG.

docs/pipeline-infographic.html

@@ -141,21 +141,21 @@
       <div class="num">5</div>
       <div class="icon">🕵️</div>
       <h2>The Detectives</h2>
-      <p>One per topic pile. Compares sheets that should agree and hunts for contradictions: "wall shown here, but not on the structural plan."</p>
+      <p>One per topic pile. Hunts for contradictions between sheets that should agree — <i>and</i> mistakes within a single sheet: "wall shown here, but not on the structural plan."</p>
     </div>
     <div class="arrow">→</div>
     <div class="card spec">
       <div class="num">6</div>
-      <div class="icon">👷</div>
+      <div class="icon">📐</div>
       <h2>The Specialists</h2>
-      <p>Three experts at once: a <b>code inspector</b>, a veteran <b>builder</b> ("can this actually be built?"), and a <b>checklist keeper</b> ("is anything missing?").</p>
+      <p>Working at once: a <b>drawing proofreader</b> (dangling callouts, a schedule vs its own plan, dimensions that don't add up), a veteran <b>builder</b> ("can this be built?"), and a <b>checklist keeper</b> ("is anything missing?").</p>
     </div>
     <div class="arrow">→</div>
     <div class="card brain">
       <div class="num">7</div>
       <div class="icon">🧠</div>
       <h2>The Brain</h2>
-      <p>The senior reviewer. Collects every finding, merges duplicates, discards weak ones, and ranks the rest by how much trouble they'd cause.</p>
+      <p>The senior reviewer. Merges duplicates, discards weak findings, ranks the rest — then sends the ones it doubts back for a <b>zoomed-in second look</b> and drops any that don't hold up.</p>
     </div>
     <div class="arrow">→</div>
     <div class="card human">
@@ -174,9 +174,12 @@
   </div>
 
   <div class="note">
-    <b>Good to know:</b> everyone shares one notebook, so each step builds on the last.
-    If one page can't be read, the team keeps going and that page is flagged as a gap
-    instead of stopping the whole review. Every finding links back to the sheet it came from.
+    <b>Good to know:</b> the review is focused on the <b>drawings themselves</b> —
+    contradictions, single-sheet mistakes, buildability, and missing pieces
+    (building-code checks are built in but turned off by default). Everyone shares one
+    notebook, so each step builds on the last. If one page can't be read, the team keeps
+    going and that page is flagged as a gap instead of stopping the whole review. Every
+    finding links back to the sheet it came from.
   </div>
 
 </div>