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/intake-section.tsx

@@ -12,8 +12,69 @@ import {
 } from '@/components/ui/select'
 import { Button } from '@/components/ui/button'
 import { Card, CardContent } from '@/components/ui/card'
+import { Badge } from '@/components/ui/badge'
 import { Plus, Trash2, FileText } from 'lucide-react'
+import { InfoTooltip } from '@/components/ui/info-tooltip'
 import type { IntakeConfig, FileRequirementConfig } from '@/types/pipeline-wizard'
+import {
+  FILE_TYPE_CATEGORIES,
+  getActiveCategoriesFromMimeTypes,
+  categoriesToMimeTypes,
+} from '@/lib/file-type-categories'
+
+type FileTypePickerProps = {
+  value: string[]
+  onChange: (mimeTypes: string[]) => void
+}
+
+function FileTypePicker({ value, onChange }: FileTypePickerProps) {
+  const activeCategories = getActiveCategoriesFromMimeTypes(value)
+
+  const toggleCategory = (categoryId: string) => {
+    const isActive = activeCategories.includes(categoryId)
+    const newCategories = isActive
+      ? activeCategories.filter((id) => id !== categoryId)
+      : [...activeCategories, categoryId]
+    onChange(categoriesToMimeTypes(newCategories))
+  }
+
+  return (
+    <div className="space-y-2">
+      <Label className="text-xs">Accepted Types</Label>
+      <div className="flex flex-wrap gap-1.5">
+        {FILE_TYPE_CATEGORIES.map((cat) => {
+          const isActive = activeCategories.includes(cat.id)
+          return (
+            <Button
+              key={cat.id}
+              type="button"
+              variant={isActive ? 'default' : 'outline'}
+              size="sm"
+              className="h-7 text-xs px-2.5"
+              onClick={() => toggleCategory(cat.id)}
+            >
+              {cat.label}
+            </Button>
+          )
+        })}
+      </div>
+      <div className="flex flex-wrap gap-1">
+        {activeCategories.length === 0 ? (
+          <Badge variant="secondary" className="text-[10px]">All types</Badge>
+        ) : (
+          activeCategories.map((catId) => {
+            const cat = FILE_TYPE_CATEGORIES.find((c) => c.id === catId)
+            return cat ? (
+              <Badge key={catId} variant="secondary" className="text-[10px]">
+                {cat.label}
+              </Badge>
+            ) : null
+          })
+        )}
+      </div>
+    </div>
+  )
+}
 
 type IntakeSectionProps = {
   config: IntakeConfig
@@ -67,7 +128,10 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
       <div className="space-y-4">
         <div className="flex items-center justify-between">
           <div>
-            <Label>Submission Window</Label>
+            <div className="flex items-center gap-1.5">
+              <Label>Submission Window</Label>
+              <InfoTooltip content="When enabled, projects can only be submitted within the configured date range." />
+            </div>
             <p className="text-xs text-muted-foreground">
               Enable timed submission windows for project intake
             </p>
@@ -85,7 +149,10 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
       {/* Late Policy */}
       <div className="grid gap-4 sm:grid-cols-2">
         <div className="space-y-2">
-          <Label>Late Submission Policy</Label>
+          <div className="flex items-center gap-1.5">
+            <Label>Late Submission Policy</Label>
+            <InfoTooltip content="Controls how submissions after the deadline are handled. 'Reject' blocks them, 'Flag' accepts but marks as late, 'Accept' treats them normally." />
+          </div>
           <Select
             value={config.lateSubmissionPolicy ?? 'flag'}
             onValueChange={(value) =>
@@ -108,7 +175,10 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
 
         {(config.lateSubmissionPolicy ?? 'flag') === 'flag' && (
           <div className="space-y-2">
-            <Label>Grace Period (hours)</Label>
+            <div className="flex items-center gap-1.5">
+              <Label>Grace Period (hours)</Label>
+              <InfoTooltip content="Extra time after the deadline during which late submissions are still accepted but flagged." />
+            </div>
             <Input
               type="number"
               min={0}
@@ -125,7 +195,10 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
       {/* File Requirements */}
       <div className="space-y-3">
         <div className="flex items-center justify-between">
-          <Label>File Requirements</Label>
+          <div className="flex items-center gap-1.5">
+            <Label>File Requirements</Label>
+            <InfoTooltip content="Define what files applicants must upload. Each requirement can specify accepted formats and size limits." />
+          </div>
           <Button type="button" variant="outline" size="sm" onClick={addFileReq} disabled={isActive}>
             <Plus className="h-3.5 w-3.5 mr-1" />
             Add Requirement
@@ -187,6 +260,14 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
                       <Label className="text-xs">Required</Label>
                     </div>
                   </div>
+                  <div className="sm:col-span-2">
+                    <FileTypePicker
+                      value={req.acceptedMimeTypes}
+                      onChange={(mimeTypes) =>
+                        updateFileReq(index, { acceptedMimeTypes: mimeTypes })
+                      }
+                    />
+                  </div>
                 </div>
                 <Button
                   type="button"