Add design-pcb-layout interactive template

manifest.yaml

@@ -1269,6 +1269,15 @@ templates:
       persona: electrical-engineer
       protocols: [anti-hallucination, self-verification, component-selection, component-selection-audit, schematic-design, schematic-compliance-audit]
 
+    - name: design-pcb-layout
+      path: templates/design-pcb-layout.md
+      description: >
+        Interactive PCB layout session. Guides the user from a completed
+        schematic through placement, automated routing, and DRC
+        validation with layout-to-schematic feedback loop.
+      persona: electrical-engineer
+      protocols: [anti-hallucination, self-verification, pcb-layout-design, layout-design-review]
+
   testing:
     - name: discover-tests-for-changes
       path: templates/discover-tests-for-changes.md

protocols/analysis/layout-design-review.md

@@ -11,6 +11,7 @@ description: >
   placement, thermal design, and manufacturing constraints.
 applicable_to:
   - review-layout
+  - design-pcb-layout
 ---
 
 # Protocol: Layout Design Review

protocols/reasoning/pcb-layout-design.md

@@ -11,7 +11,8 @@ description: >
   and automated execution via Python pcbnew API with FreeRouting
   autorouter and KiCad DRC validation loop. Supports 2-layer and
   4-layer stackups.
-applicable_to: []
+applicable_to:
+  - design-pcb-layout
 ---
 
 # Protocol: PCB Layout Design
@@ -23,9 +24,6 @@ for board setup and component placement, FreeRouting for automated
 trace routing, and `kicad-cli` for design rule validation. Execute
 all phases in order.
 
-**Composition note**: This protocol is intended for standalone/manual
-composition and is not currently required by any template.
-
 **Input**: A completed KiCad schematic (`.kicad_sch`) with a netlist,
 component footprint assignments, and the component selection report
 from upstream phases. If footprints have not been assigned in the