Fix pipeline edit crash: merge defaults with DB configJson

The DB configJson uses different field names than wizard types expect
(e.g., deterministic.rules vs rules, votingEnabled vs juryVotingEnabled).
The ?? operator only guards null/undefined, but configJson is {} (truthy),
so defaults never applied. This caused config.rules.map() to crash with
"Cannot read properties of undefined (reading 'map')".

Fix: spread defaults first then overlay DB values, and add defensive ??
fallbacks in all section components for potentially undefined properties.

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

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

@@ -26,8 +26,10 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
     onChange({ ...config, ...updates })
   }
 
+  const fileRequirements = config.fileRequirements ?? []
+
   const updateFileReq = (index: number, updates: Partial<FileRequirementConfig>) => {
-    const updated = [...config.fileRequirements]
+    const updated = [...fileRequirements]
     updated[index] = { ...updated[index], ...updates }
     onChange({ ...config, fileRequirements: updated })
   }
@@ -36,7 +38,7 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
     onChange({
       ...config,
       fileRequirements: [
-        ...config.fileRequirements,
+        ...fileRequirements,
         {
           name: '',
           description: '',
@@ -49,7 +51,7 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
   }
 
   const removeFileReq = (index: number) => {
-    const updated = config.fileRequirements.filter((_, i) => i !== index)
+    const updated = fileRequirements.filter((_, i) => i !== index)
     onChange({ ...config, fileRequirements: updated })
   }
 
@@ -71,7 +73,7 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
             </p>
           </div>
           <Switch
-            checked={config.submissionWindowEnabled}
+            checked={config.submissionWindowEnabled ?? true}
             onCheckedChange={(checked) =>
               updateConfig({ submissionWindowEnabled: checked })
             }
@@ -85,7 +87,7 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
         <div className="space-y-2">
           <Label>Late Submission Policy</Label>
           <Select
-            value={config.lateSubmissionPolicy}
+            value={config.lateSubmissionPolicy ?? 'flag'}
             onValueChange={(value) =>
               updateConfig({
                 lateSubmissionPolicy: value as IntakeConfig['lateSubmissionPolicy'],
@@ -104,14 +106,14 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
           </Select>
         </div>
 
-        {config.lateSubmissionPolicy === 'flag' && (
+        {(config.lateSubmissionPolicy ?? 'flag') === 'flag' && (
           <div className="space-y-2">
             <Label>Grace Period (hours)</Label>
             <Input
               type="number"
               min={0}
               max={168}
-              value={config.lateGraceHours}
+              value={config.lateGraceHours ?? 24}
               onChange={(e) =>
                 updateConfig({ lateGraceHours: parseInt(e.target.value) || 0 })
               }
@@ -130,13 +132,13 @@ export function IntakeSection({ config, onChange, isActive }: IntakeSectionProps
           </Button>
         </div>
 
-        {config.fileRequirements.length === 0 && (
+        {fileRequirements.length === 0 && (
           <p className="text-sm text-muted-foreground py-4 text-center">
             No file requirements configured. Projects can be submitted without files.
           </p>
         )}
 
-        {config.fileRequirements.map((req, index) => (
+        {fileRequirements.map((req, index) => (
           <Card key={index}>
             <CardContent className="pt-4 space-y-3">
               <div className="flex items-start gap-3">