# Treatment Milestone Tracker Implementation

## Database Schema Changes

Add to prisma/schema.prisma:

```prisma
model TreatmentPlan {
  id          String    @id @default(cuid())
  workspaceId String    @unique
  title       String    // e.g., "Grace's Chemotherapy Plan"
  totalCycles Int
  currentCycle Int      @default(0)
  startDate   DateTime?
  estimatedEnd DateTime?
  status      String    @default("ACTIVE") // ACTIVE, PAUSED, COMPLETED
  cycleType   String    @default("WEEKLY") // WEEKLY, BIWEEKLY, MONTHLY, CUSTOM
  cycleDays   Int       @default(7)        // Days between cycles
  createdAt   DateTime  @default(now())
  updatedAt   DateTime  @updatedAt
  createdById String
  
  workspace   Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)
  createdBy   User      @relation(fields: [createdById], references: [id])
  milestones  TreatmentMilestone[]
}

model TreatmentMilestone {
  id          String    @id @default(cuid())
  planId      String
  cycleNumber Int       // Which cycle this milestone represents
  date        DateTime  // When it happened (or estimated)
  status      String    @default("UPCOMING") // UPCOMING, COMPLETED, SKIPPED
  notes       String?   // Personal reflection
  sideEffects String?   // What was experienced
  celebratedAt DateTime? // When we showed the celebration
  createdAt   DateTime  @default(now())
  
  plan        TreatmentPlan @relation(fields: [planId], references: [id], onDelete: Cascade)
}
```

## API Routes

### GET /api/workspaces/[id]/treatment-plan
Get the treatment plan for a workspace

### POST /api/workspaces/[id]/treatment-plan
Create or update treatment plan

### POST /api/workspaces/[id]/treatment-plan/milestones/[cycleNumber]/complete
Mark a milestone as completed

### GET /api/workspaces/[id]/treatment-plan/progress
Get progress stats

## Components

- TreatmentProgress - Main progress widget
- MilestoneCelebration - Celebration modal
- TreatmentCalendar - Timeline view
- CycleDetailView - Individual cycle details