Initial commit: Next Step health management app

A calm, reliable app to help manage appointments, medications, and notes
for chemo patients and their families.

Features:
- Today dashboard with next appointment and medications due
- Medication tracking with multiple schedule types (fixed times, interval, weekdays, PRN)
- One-tap dose logging with 5-minute undo window
- Questions for doctor tracking
- Family sharing with workspace model and invite links
- Offline-first with IndexedDB and sync
- Docker Compose deployment with Tailscale Funnel support

Tech stack:
- Next.js 14 (App Router) + TypeScript + Tailwind CSS
- PostgreSQL + Prisma
- Argon2 password hashing + session cookies
- Dexie.js for IndexedDB

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/app/onboarding/page.tsx

@@ -0,0 +1,158 @@
+'use client'
+
+import { useState } from 'react'
+import { useRouter } from 'next/navigation'
+import { Heart, Shield, ArrowRight } from 'lucide-react'
+import { Button, Input, Card, showToast } from '@/components/ui'
+
+export default function OnboardingPage() {
+  const router = useRouter()
+  const [step, setStep] = useState<'disclaimer' | 'workspace'>('disclaimer')
+  const [workspaceName, setWorkspaceName] = useState('')
+  const [clinicPhone, setClinicPhone] = useState('')
+  const [loading, setLoading] = useState(false)
+  const [error, setError] = useState('')
+
+  const handleAcceptDisclaimer = () => {
+    setStep('workspace')
+  }
+
+  const handleCreateWorkspace = async (e: React.FormEvent) => {
+    e.preventDefault()
+    setError('')
+    setLoading(true)
+
+    try {
+      // Create workspace
+      const createRes = await fetch('/api/workspaces', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ name: workspaceName }),
+      })
+
+      const createData = await createRes.json()
+
+      if (!createRes.ok) {
+        throw new Error(createData.error || 'Failed to create workspace')
+      }
+
+      // Update with clinic phone if provided
+      if (clinicPhone.trim()) {
+        await fetch(`/api/workspaces/${createData.workspace.id}`, {
+          method: 'PATCH',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ clinicPhone: clinicPhone.trim() }),
+        })
+      }
+
+      showToast('All set! Welcome to Next Step.', 'success')
+      router.push('/today')
+      router.refresh()
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Something went wrong')
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  if (step === 'disclaimer') {
+    return (
+      <div className="min-h-screen bg-background flex flex-col items-center justify-center p-4">
+        <div className="w-full max-w-md">
+          <div className="text-center mb-8">
+            <div className="w-16 h-16 bg-amber-100 rounded-2xl flex items-center justify-center mx-auto mb-4">
+              <Shield className="w-8 h-8 text-amber-600" />
+            </div>
+            <h1 className="text-2xl font-bold text-secondary-900">Important Notice</h1>
+          </div>
+
+          <Card className="mb-6">
+            <div className="space-y-4 text-secondary-700">
+              <p>
+                <strong>Next Step is a tracking tool only.</strong> It helps you and your family
+                stay organized with appointments and medications.
+              </p>
+
+              <p>
+                <strong className="text-red-600">This app does not provide medical advice.</strong>{' '}
+                Always consult your healthcare team for medical decisions.
+              </p>
+
+              <p>
+                <strong>For emergencies:</strong> Call 000 (Australia) or your local emergency
+                services immediately.
+              </p>
+
+              <p>
+                If you have questions about your treatment, contact your clinic directly using the
+                button we'll help you set up.
+              </p>
+
+              <div className="pt-4 border-t border-border">
+                <p className="text-sm text-secondary-500">
+                  By continuing, you acknowledge that Next Step is for tracking purposes only and
+                  does not replace professional medical advice.
+                </p>
+              </div>
+            </div>
+          </Card>
+
+          <Button onClick={handleAcceptDisclaimer} fullWidth>
+            I Understand
+            <ArrowRight className="w-5 h-5 ml-2" />
+          </Button>
+        </div>
+      </div>
+    )
+  }
+
+  return (
+    <div className="min-h-screen bg-background flex flex-col items-center justify-center p-4">
+      <div className="w-full max-w-sm">
+        <div className="text-center mb-8">
+          <div className="w-16 h-16 bg-primary-500 rounded-2xl flex items-center justify-center mx-auto mb-4">
+            <Heart className="w-8 h-8 text-white" />
+          </div>
+          <h1 className="text-2xl font-bold text-secondary-900">Set Up Your Plan</h1>
+          <p className="text-secondary-500 mt-1">Create a workspace to get started</p>
+        </div>
+
+        <Card className="mb-6">
+          <form onSubmit={handleCreateWorkspace} className="space-y-4">
+            <Input
+              label="Workspace Name"
+              type="text"
+              value={workspaceName}
+              onChange={(e) => setWorkspaceName(e.target.value)}
+              placeholder="e.g., Grace's Plan"
+              helperText="This is how family members will identify this workspace"
+              required
+            />
+            <Input
+              label="Clinic Phone Number"
+              type="tel"
+              value={clinicPhone}
+              onChange={(e) => setClinicPhone(e.target.value)}
+              placeholder="e.g., 08 9400 1234"
+              helperText="We'll add a 'Call Clinic' button for quick access"
+            />
+
+            {error && (
+              <p className="text-sm text-red-600 bg-red-50 px-3 py-2 rounded-button">
+                {error}
+              </p>
+            )}
+
+            <Button type="submit" fullWidth loading={loading}>
+              Create Workspace
+            </Button>
+          </form>
+        </Card>
+
+        <p className="text-center text-sm text-secondary-500">
+          You can add family members later from Settings
+        </p>
+      </div>
+    </div>
+  )
+}