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/ui/info-tooltip.tsx

@@ -0,0 +1,36 @@
+'use client'
+
+import { Info } from 'lucide-react'
+import {
+  Tooltip,
+  TooltipTrigger,
+  TooltipContent,
+  TooltipProvider,
+} from '@/components/ui/tooltip'
+
+type InfoTooltipProps = {
+  content: string
+  side?: 'top' | 'right' | 'bottom' | 'left'
+}
+
+export function InfoTooltip({ content, side = 'top' }: InfoTooltipProps) {
+  return (
+    <TooltipProvider delayDuration={200}>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <button
+            type="button"
+            tabIndex={0}
+            className="inline-flex items-center justify-center rounded-full text-muted-foreground hover:text-foreground transition-colors focus:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1"
+          >
+            <Info className="h-4 w-4" />
+            <span className="sr-only">More info</span>
+          </button>
+        </TooltipTrigger>
+        <TooltipContent side={side} className="max-w-xs text-sm">
+          {content}
+        </TooltipContent>
+      </Tooltip>
+    </TooltipProvider>
+  )
+}