UI/UX audit fixes: clickable pipelines, broken links, isActive locking

- Make pipeline cards clickable on list page (navigate to detail view)
- Fix broken nav link: applicant /messages → /mentor
- Fix broken nav link: mentor /messages → /projects
- Add isActive field locking to all 7 wizard sections (intake, main-track,
  filtering, assignment, awards, live-finals, notifications)
- Add minLoad ≤ maxLoad cross-field validation in assignment section
- Add duplicate stage slug detection in main track section
- Add active pipeline warning banners in intake and main track sections

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

src/components/admin/pipeline/sections/assignment-section.tsx

@@ -15,9 +15,10 @@ import type { EvaluationConfig } from '@/types/pipeline-wizard'
 type AssignmentSectionProps = {
   config: EvaluationConfig
   onChange: (config: EvaluationConfig) => void
+  isActive?: boolean
 }
 
-export function AssignmentSection({ config, onChange }: AssignmentSectionProps) {
+export function AssignmentSection({ config, onChange, isActive }: AssignmentSectionProps) {
   const updateConfig = (updates: Partial<EvaluationConfig>) => {
     onChange({ ...config, ...updates })
   }
@@ -32,6 +33,7 @@ export function AssignmentSection({ config, onChange }: AssignmentSectionProps)
             min={1}
             max={20}
             value={config.requiredReviews}
+            disabled={isActive}
             onChange={(e) =>
               updateConfig({ requiredReviews: parseInt(e.target.value) || 3 })
             }
@@ -48,6 +50,7 @@ export function AssignmentSection({ config, onChange }: AssignmentSectionProps)
             min={1}
             max={100}
             value={config.maxLoadPerJuror}
+            disabled={isActive}
             onChange={(e) =>
               updateConfig({ maxLoadPerJuror: parseInt(e.target.value) || 20 })
             }
@@ -64,6 +67,7 @@ export function AssignmentSection({ config, onChange }: AssignmentSectionProps)
             min={0}
             max={50}
             value={config.minLoadPerJuror}
+            disabled={isActive}
             onChange={(e) =>
               updateConfig({ minLoadPerJuror: parseInt(e.target.value) || 5 })
             }
@@ -74,6 +78,12 @@ export function AssignmentSection({ config, onChange }: AssignmentSectionProps)
         </div>
       </div>
 
+      {config.minLoadPerJuror > config.maxLoadPerJuror && (
+        <p className="text-sm text-destructive">
+          Min load per juror cannot exceed max load per juror.
+        </p>
+      )}
+
       <div className="flex items-center justify-between">
         <div>
           <Label>Availability Weighting</Label>
@@ -86,6 +96,7 @@ export function AssignmentSection({ config, onChange }: AssignmentSectionProps)
           onCheckedChange={(checked) =>
             updateConfig({ availabilityWeighting: checked })
           }
+          disabled={isActive}
         />
       </div>
 
@@ -98,6 +109,7 @@ export function AssignmentSection({ config, onChange }: AssignmentSectionProps)
               overflowPolicy: value as EvaluationConfig['overflowPolicy'],
             })
           }
+          disabled={isActive}
         >
           <SelectTrigger>
             <SelectValue />