feat: Add step reporting to all task handlers

Added updateStep() calls to:
- payload-fetch-curl: loading → preflight → fetching → saving
- product-refresh: loading → normalizing → upserting
- store-discovery-http: starting → preflight → navigating → fetching

This enables real-time visibility of worker progress in the dashboard.

backend/src/tasks/handlers/payload-fetch-curl.ts

@@ -28,7 +28,7 @@ import { saveRawPayload } from '../../utils/payload-storage';
 import { taskService } from '../task-service';
 
 export async function handlePayloadFetch(ctx: TaskContext): Promise<TaskResult> {
-  const { pool, task } = ctx;
+  const { pool, task, updateStep } = ctx;
   const dispensaryId = task.dispensary_id;
 
   if (!dispensaryId) {
@@ -39,6 +39,7 @@ export async function handlePayloadFetch(ctx: TaskContext): Promise<TaskResult>
     // ============================================================
     // STEP 1: Load dispensary info
     // ============================================================
+    updateStep('loading', 'Loading dispensary info');
     const dispResult = await pool.query(`
       SELECT
         id, name, platform_dispensary_id, menu_url, menu_type, city, state
@@ -67,6 +68,7 @@ export async function handlePayloadFetch(ctx: TaskContext): Promise<TaskResult>
     // ============================================================
     // STEP 2: Start stealth session
     // ============================================================
+    updateStep('preflight', 'Starting stealth session');
     const session = startSession();
     console.log(`[PayloadFetch] Session started: ${session.sessionId}`);
 
@@ -75,6 +77,7 @@ export async function handlePayloadFetch(ctx: TaskContext): Promise<TaskResult>
     // ============================================================
     // STEP 3: Fetch products via GraphQL (Status: 'All')
     // ============================================================
+    updateStep('fetching', 'Executing GraphQL query');
     const allProducts: any[] = [];
     let page = 0;
     let totalCount = 0;
@@ -162,6 +165,7 @@ export async function handlePayloadFetch(ctx: TaskContext): Promise<TaskResult>
     // STEP 4: Save raw payload to filesystem
     // Per TASK_WORKFLOW_2024-12-10.md: Metadata/Payload separation
     // ============================================================
+    updateStep('saving', `Saving ${allProducts.length} products`);
     const rawPayload = {
       dispensaryId,
       platformId,

backend/src/tasks/handlers/product-refresh.ts

@@ -188,6 +188,7 @@ export async function handleProductRefresh(ctx: TaskContext): Promise<TaskResult
     // ============================================================
     // STEP 4: Upsert to canonical tables
     // ============================================================
+    updateStep('upserting', `Saving ${normalizationResult.products.length} products to DB`);
     console.log(`[ProductRefresh] Upserting to store_products...`);
 
     const upsertResult = await upsertStoreProducts(

backend/src/tasks/handlers/store-discovery-http.ts

@@ -71,17 +71,19 @@ interface DiscoveredLocation {
 }
 
 export async function handleStoreDiscoveryHttp(ctx: TaskContext): Promise<TaskResult> {
-  const { pool, task, crawlRotator } = ctx;
+  const { pool, task, crawlRotator, updateStep } = ctx;
   const platform = task.platform || 'dutchie';
 
   let browser: any = null;
 
   try {
+    updateStep('starting', 'Initializing store discovery');
     console.log(`[StoreDiscoveryHTTP] Starting discovery for platform: ${platform}`);
 
     // ============================================================
     // STEP 1: Setup Puppeteer with proxy
     // ============================================================
+    updateStep('preflight', 'Launching browser');
     const puppeteer = require('puppeteer-extra');
     const StealthPlugin = require('puppeteer-extra-plugin-stealth');
     puppeteer.use(StealthPlugin());
@@ -126,6 +128,7 @@ export async function handleStoreDiscoveryHttp(ctx: TaskContext): Promise<TaskRe
     // ============================================================
     // STEP 2: Establish session by visiting dispensaries page
     // ============================================================
+    updateStep('navigating', 'Loading session page');
     const sessionUrl = 'https://dutchie.com/dispensaries';
     console.log(`[StoreDiscoveryHTTP] Establishing session at ${sessionUrl}...`);
 
@@ -174,6 +177,7 @@ export async function handleStoreDiscoveryHttp(ctx: TaskContext): Promise<TaskRe
     // ============================================================
     // STEP 4: Fetch cities for each state via GraphQL
     // ============================================================
+    updateStep('fetching', `Fetching cities for ${stateCodesToDiscover.length} states`);
     const statesWithCities = await page.evaluate(async (hash: string) => {
       const logs: string[] = [];
       try {