feat: AI report quality check before submission

Adds POST /api/incidents/ai/quality-check using Claude tool_use to score incident descriptions 1-10. Report form blocks submission when score < 6, shows amber feedback with suggestions, and offers a 'Submit anyway' override.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FFDuBhMKvoWjrWT3ZnGmmr

app/api/incidents/ai/quality-check/route.ts

@@ -0,0 +1,57 @@
+export const dynamic = 'force-dynamic'
+
+import { NextRequest, NextResponse } from 'next/server'
+import { createClient } from '@/lib/supabase/server'
+import { anthropic } from '@/lib/claude/client'
+
+export async function POST(request: NextRequest) {
+  const supabase = await createClient()
+  const { data: { user }, error: authError } = await supabase.auth.getUser()
+  if (authError || !user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+
+  const body = await request.json() as { description?: string; incident_type?: string }
+  if (!body.description || !body.incident_type) {
+    return NextResponse.json({ error: 'description and incident_type required' }, { status: 422 })
+  }
+
+  const message = await anthropic.messages.create({
+    model: 'claude-opus-4-8',
+    thinking: { type: 'adaptive' },
+    max_tokens: 1024,
+    tools: [{
+      name: 'assess_quality',
+      description: 'Assess HSE incident report description quality',
+      input_schema: {
+        type: 'object' as const,
+        properties: {
+          score: { type: 'number', description: '1-10 quality score' },
+          passes: { type: 'boolean', description: 'True when score is 6 or above' },
+          feedback: { type: 'string', description: 'One-sentence quality summary' },
+          suggestions: {
+            type: 'array',
+            items: { type: 'string' },
+            description: 'Up to 3 concrete suggestions to improve the description',
+          },
+        },
+        required: ['score', 'passes', 'feedback', 'suggestions'],
+      },
+    }],
+    tool_choice: { type: 'tool', name: 'assess_quality' },
+    messages: [{
+      role: 'user',
+      content: `You are an HSE reporting assistant for a Malaysian 3PL warehouse. Assess this incident report description.
+
+Incident type: ${body.incident_type}
+Description: ${body.description}
+
+Score 1–10 based on: specificity (location, time, persons involved), completeness (what happened + immediate actions), and clarity. Score 6 or above passes. If score is below 6, give up to 3 actionable suggestions.`,
+    }],
+  })
+
+  const toolBlock = message.content.find(b => b.type === 'tool_use')
+  if (!toolBlock || toolBlock.type !== 'tool_use') {
+    return NextResponse.json({ error: 'AI assessment failed' }, { status: 500 })
+  }
+
+  return NextResponse.json(toolBlock.input)
+}

components/incidents/report-form.tsx

@@ -33,6 +33,13 @@ export function ReportForm({ zoneToken }: Props) {
   const [submitting, setSubmitting] = useState(false)
   const [error, setError] = useState<string | null>(null)
   const [files, setFiles] = useState<File[]>([])
+  const [qualityCheck, setQualityCheck] = useState<{
+    score: number
+    passes: boolean
+    feedback: string
+    suggestions: string[]
+  } | null>(null)
+  const [overrideQuality, setOverrideQuality] = useState(false)
 
   const [form, setForm] = useState({
     incident_type: '' as IncidentType | '',
@@ -47,6 +54,34 @@ export function ReportForm({ zoneToken }: Props) {
     setError(null)
     setSubmitting(true)
 
+    if (!overrideQuality) {
+      try {
+        const qcRes = await fetch('/api/incidents/ai/quality-check', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({
+            description: form.description,
+            incident_type: form.incident_type,
+          }),
+        })
+        if (qcRes.ok) {
+          const qc = await qcRes.json() as {
+            score: number
+            passes: boolean
+            feedback: string
+            suggestions: string[]
+          }
+          setQualityCheck(qc)
+          if (!qc.passes) {
+            setSubmitting(false)
+            return
+          }
+        }
+      } catch {
+        // Quality check failure is non-blocking — proceed with submission
+      }
+    }
+
     try {
       const fd = new FormData()
       if (zoneToken) fd.append('zone_token', zoneToken)
@@ -115,6 +150,31 @@ export function ReportForm({ zoneToken }: Props) {
         />
       </div>
 
+      {qualityCheck && !qualityCheck.passes && (
+        <div className="rounded-lg bg-amber-50 border border-amber-200 p-3 space-y-2">
+          <p className="text-xs font-semibold text-amber-700 uppercase tracking-wide">
+            Report quality — {qualityCheck.score}/10
+          </p>
+          <p className="text-sm text-amber-800">{qualityCheck.feedback}</p>
+          {qualityCheck.suggestions.length > 0 && (
+            <ul className="list-disc list-inside space-y-1">
+              {qualityCheck.suggestions.map((s, i) => (
+                <li key={i} className="text-xs text-amber-700">{s}</li>
+              ))}
+            </ul>
+          )}
+          <label className="flex items-center gap-2 text-xs text-amber-700 cursor-pointer mt-1">
+            <input
+              type="checkbox"
+              checked={overrideQuality}
+              onChange={e => setOverrideQuality(e.target.checked)}
+              className="rounded border-amber-300 text-amber-600"
+            />
+            Submit anyway
+          </label>
+        </div>
+      )}
+
       <div className="space-y-3">
         <label className="flex items-center gap-3 cursor-pointer">
           <input

tests/api/incidents/quality-check.test.ts

@@ -0,0 +1,55 @@
+import { describe, it, expect, vi } from 'vitest'
+
+vi.mock('@/lib/supabase/server', () => ({
+  createClient: vi.fn().mockResolvedValue({
+    auth: {
+      getUser: vi.fn().mockResolvedValue({ data: { user: { id: 'user-1' } }, error: null }),
+    },
+  }),
+}))
+
+vi.mock('@/lib/claude/client', () => ({
+  anthropic: {
+    messages: {
+      create: vi.fn().mockResolvedValue({
+        content: [{
+          type: 'tool_use',
+          name: 'assess_quality',
+          input: { score: 8, passes: true, feedback: 'Clear description.', suggestions: [] },
+        }],
+      }),
+    },
+  },
+}))
+
+describe('POST /api/incidents/ai/quality-check', () => {
+  it('returns 422 when description is missing', async () => {
+    const { POST } = await import('@/app/api/incidents/ai/quality-check/route')
+    const req = new Request('http://localhost/api/incidents/ai/quality-check', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ incident_type: 'injury' }),
+    })
+    const res = await POST(req as never)
+    expect(res.status).toBe(422)
+  })
+
+  it('returns quality assessment from Claude', async () => {
+    const { POST } = await import('@/app/api/incidents/ai/quality-check/route')
+    const req = new Request('http://localhost/api/incidents/ai/quality-check', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        description: 'Forklift operator collided with racking in zone B at 14:30, injuring left arm.',
+        incident_type: 'injury',
+      }),
+    })
+    const res = await POST(req as never)
+    expect(res.status).toBe(200)
+    const body = await res.json()
+    expect(body).toHaveProperty('score')
+    expect(body).toHaveProperty('passes')
+    expect(body).toHaveProperty('feedback')
+    expect(body).toHaveProperty('suggestions')
+  })
+})