linear-data-handling

# Linear Data Handling

## Overview
Implement reliable data synchronization, backup, and consistency for Linear integrations.

## Prerequisites
- Linear API access
- Database for local storage
- Understanding of eventual consistency

## Instructions

### Step 1: Data Model Mapping
```typescript
// models/linear-entities.ts
import { z } from "zod";

// Core entity schemas
export const LinearIssueSchema = z.object({
  id: z.string(),
  identifier: z.string(),
  title: z.string(),
  description: z.string().nullable(),
  priority: z.number(),
  estimate: z.number().nullable(),
  stateId: z.string(),
  stateName: z.string(),
  teamId: z.string(),
  teamKey: z.string(),
  assigneeId: z.string().nullable(),
  projectId: z.string().nullable(),
  cycleId: z.string().nullable(),
  createdAt: z.string(),
  updatedAt: z.string(),
  completedAt: z.string().nullable(),
  canceledAt: z.string().nullable(),
});

export type LinearIssue = z.infer<typeof LinearIssueSchema>;

export const LinearProjectSchema = z.object({
  id: z.string(),
  name: z.string(),
  description: z.string().nullable(),
  state: z.string(),
  progress: z.number(),
  targetDate: z.string().nullable(),
  createdAt: z.string(),
  updatedAt: z.string(),
});

export type LinearProject = z.infer<typeof LinearProjectSchema>;
```

### Step 2: Full Sync Implementation
```typescript
// sync/full-sync.ts
import { LinearClient, Issue } from "@linear/sdk";
import { db } from "../lib/database";
import { LinearIssueSchema } from "../models/linear-entities";

interface SyncStats {
  total: number;
  created: number;
  updated: number;
  deleted: number;
  errors: number;
}

export async function fullSync(client: LinearClient): Promise<SyncStats> {
  const stats: SyncStats = { total: 0, created: 0, updated: 0, deleted: 0, errors: 0 };

  console.log("Starting full sync...");

  // Fetch all issues with pagination
  const remoteIssues = new Map<string, LinearIssue>();
  let hasMore = true;
  let cursor: string | undefined;