Platform polish: bulk invite, file requirements, filtering redesign, UX fixes

- F1: Set seed jury/mentors/observers to NONE status (not invited), remove passwords
- F2: Add bulk invite UI with checkbox selection and floating toolbar
- F3: Add getProjectRequirements backend query + requirement slots on project detail
- F4: Redesign filtering section: AI criteria textarea, "What AI sees" card,
  field-aware eligibility rules with human-readable previews
- F5: Auto-redirect to pipeline detail when only one pipeline exists
- F6: Make project names clickable in pipeline intake panel
- F7: Fix pipeline creation error: edition context fallback + .min(1) validation
- Pipeline wizard sections: add isActive locking, info tooltips, UX improvements

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

src/server/services/smart-assignment.ts

@@ -419,12 +419,20 @@ export async function getSmartSuggestions(options: {
   const suggestions: AssignmentScore[] = []
 
   for (const user of users) {
-    // Skip users at AI max (they won't appear in suggestions)
     const currentCount = user._count.assignments
+
+    // Skip users at AI max (they won't appear in suggestions)
     if (currentCount >= aiMaxPerJudge) {
       continue
     }
 
+    // Per-juror hard block: skip entirely if at personal maxAssignments limit
+    if (user.maxAssignments !== null && user.maxAssignments !== undefined) {
+      if (currentCount >= user.maxAssignments) {
+        continue
+      }
+    }
+
     for (const project of projects) {
       // Skip if already assigned
       const pairKey = `${user.id}:${project.id}`
@@ -621,6 +629,13 @@ export async function getMentorSuggestionsForProject(
       continue
     }
 
+    // Per-mentor hard block: skip entirely if at personal maxAssignments limit
+    if (mentor.maxAssignments !== null && mentor.maxAssignments !== undefined) {
+      if (mentor._count.mentorAssignments >= mentor.maxAssignments) {
+        continue
+      }
+    }
+
     const { score: tagScore, matchingTags } = calculateTagOverlapScore(
       mentor.expertiseTags,
       projectTags