Toolbox 30rem sticky + accordéons collapsibles + renommage libreDecision

- Boîte à outils élargie à 30rem (×1.75) — flottante sticky, zéro scroll visible
- ToolboxSection : nouveau composant accordéon générique (chevron, défaut fermé)
- ToolboxVignette : titre cliquable, bullets/actions cachés par défaut
- 4 pages : ContextMapper/SocioElection/WorkflowMilestones/inertie → ToolboxSection
- Suppression doublon SectionLayout (common/) — conflit de nommage résolu
- Renommage complet Glibredecision → libreDecision dans configs/docker/CI
- README.md + CONTRIBUTING.md ajoutés

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/app/pages/protocols/index.vue

@@ -410,13 +410,9 @@ const n8nWorkflows = [
     <!-- Toolbox sidebar -->
     <template #toolbox>
       <!-- Workflow milestones -->
-      <div class="toolbox-block">
-        <div class="toolbox-block__head">
-          <UIcon name="i-lucide-git-branch" />
-          <span>Jalons de protocole</span>
-        </div>
+      <ToolboxSection title="Jalons de protocole" icon="i-lucide-git-branch">
         <WorkflowMilestones />
-      </div>
+      </ToolboxSection>
 
       <!-- Simulateur -->
       <ToolboxVignette
@@ -428,11 +424,7 @@ const n8nWorkflows = [
       />
 
       <!-- n8n Workflows -->
-      <div class="n8n-section">
-        <div class="n8n-section__head">
-          <UIcon name="i-lucide-workflow" class="text-xs" />
-          <span>Automatisations</span>
-        </div>
+      <ToolboxSection title="Automatisations" icon="i-lucide-workflow">
         <div class="n8n-workflows">
           <div
             v-for="wf in n8nWorkflows"
@@ -456,7 +448,7 @@ const n8nWorkflows = [
             </div>
           </div>
         </div>
-      </div>
+      </ToolboxSection>
 
       <!-- Meta-gouvernance -->
       <ToolboxVignette
@@ -850,52 +842,6 @@ const n8nWorkflows = [
   font-family: inherit !important;
 }
 
-/* Toolbox blocks */
-.toolbox-block {
-  background: var(--mood-accent-soft);
-  border-radius: 14px;
-  padding: 0.875rem;
-  display: flex;
-  flex-direction: column;
-  gap: 0.75rem;
-}
-
-.toolbox-block__head {
-  display: flex;
-  align-items: center;
-  gap: 0.375rem;
-  font-size: 0.8125rem;
-  font-weight: 800;
-  color: var(--mood-accent);
-  text-transform: uppercase;
-  letter-spacing: 0.04em;
-}
-
-/* --- n8n Section --- */
-.n8n-section {
-  background: var(--mood-accent-soft);
-  border-radius: 12px;
-  padding: 0.75rem;
-  display: flex;
-  flex-direction: column;
-  gap: 0.5rem;
-}
-
-.n8n-section__head {
-  display: flex;
-  align-items: center;
-  gap: 0.375rem;
-  font-size: 0.8125rem;
-  font-weight: 700;
-  color: var(--mood-tertiary, var(--mood-accent));
-}
-
-.n8n-section__desc {
-  font-size: 0.75rem;
-  color: var(--mood-text-muted);
-  margin: 0;
-}
-
 .n8n-workflows {
   display: flex;
   flex-direction: column;