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/components/admin/pipeline/sections/live-finals-section.tsx

@@ -10,6 +10,7 @@ import {
   SelectTrigger,
   SelectValue,
 } from '@/components/ui/select'
+import { InfoTooltip } from '@/components/ui/info-tooltip'
 import type { LiveFinalConfig } from '@/types/pipeline-wizard'
 
 type LiveFinalsSectionProps = {
@@ -27,7 +28,10 @@ export function LiveFinalsSection({ config, onChange, isActive }: LiveFinalsSect
     <div className="space-y-6">
       <div className="flex items-center justify-between">
         <div>
-          <Label>Jury Voting</Label>
+          <div className="flex items-center gap-1.5">
+            <Label>Jury Voting</Label>
+            <InfoTooltip content="Enable jury members to cast votes during the live ceremony." />
+          </div>
           <p className="text-xs text-muted-foreground">
             Allow jury members to vote during the live finals event
           </p>
@@ -44,7 +48,10 @@ export function LiveFinalsSection({ config, onChange, isActive }: LiveFinalsSect
       <div className="space-y-4">
         <div className="flex items-center justify-between">
           <div>
-            <Label>Audience Voting</Label>
+            <div className="flex items-center gap-1.5">
+              <Label>Audience Voting</Label>
+              <InfoTooltip content="Allow audience members to participate in voting alongside the jury." />
+            </div>
             <p className="text-xs text-muted-foreground">
               Allow audience members to vote on projects
             </p>
@@ -61,7 +68,10 @@ export function LiveFinalsSection({ config, onChange, isActive }: LiveFinalsSect
         {(config.audienceVotingEnabled ?? false) && (
           <div className="pl-4 border-l-2 border-muted space-y-3">
             <div className="space-y-2">
-              <Label className="text-xs">Audience Vote Weight</Label>
+              <div className="flex items-center gap-1.5">
+                <Label className="text-xs">Audience Vote Weight</Label>
+                <InfoTooltip content="Percentage weight of audience votes vs jury votes in the final score (e.g., 30 means 30% audience, 70% jury)." />
+              </div>
               <div className="flex items-center gap-3">
                 <Slider
                   value={[(config.audienceVoteWeight ?? 0) * 100]}
@@ -86,7 +96,10 @@ export function LiveFinalsSection({ config, onChange, isActive }: LiveFinalsSect
       </div>
 
       <div className="space-y-2">
-        <Label>Cohort Setup Mode</Label>
+        <div className="flex items-center gap-1.5">
+          <Label>Cohort Setup Mode</Label>
+          <InfoTooltip content="Auto: system assigns projects to presentation groups. Manual: admin defines cohorts." />
+        </div>
         <Select
           value={config.cohortSetupMode ?? 'manual'}
           onValueChange={(value) =>
@@ -111,7 +124,10 @@ export function LiveFinalsSection({ config, onChange, isActive }: LiveFinalsSect
       </div>
 
       <div className="space-y-2">
-        <Label>Result Reveal Policy</Label>
+        <div className="flex items-center gap-1.5">
+          <Label>Result Reveal Policy</Label>
+          <InfoTooltip content="Immediate: show results as votes come in. Delayed: reveal after all votes. Ceremony: reveal during a dedicated announcement." />
+        </div>
         <Select
           value={config.revealPolicy ?? 'ceremony'}
           onValueChange={(value) =>