Add fetchPage() with axios, timeout, and retry logic

Implement fetchPage() function for HTTP scraping:
- Uses axios for HTTP GET requests
- Configurable timeout (default 30s) and User-Agent header
- Retry with exponential backoff (1s, 2s, 4s) on 5xx and network errors
- Does not retry on 4xx client errors
- Logs each attempt with attempt number and error details
- Returns HTML string on success, throws after retries exhausted

config/scraper.js

@@ -0,0 +1,34 @@
+/**
+ * Scraper configuration
+ *
+ * All settings can be overridden via environment variables
+ */
+
+module.exports = {
+  // Target URL
+  TARGET_URL: 'https://countryclubtowersandgardens.com/property/country-club-towers/apartments/?spaces_tab=unit',
+
+  // Scheduling
+  SCRAPER_SCHEDULE: process.env.SCRAPER_SCHEDULE || '0 6 * * *',
+  SCRAPER_TIMEZONE: process.env.SCRAPER_TIMEZONE || 'UTC',
+  SCRAPER_ENABLED: process.env.SCRAPER_ENABLED !== 'false',
+
+  // HTTP settings
+  SCRAPER_TIMEOUT: parseInt(process.env.SCRAPER_TIMEOUT, 10) || 30000,
+  USER_AGENT: 'Mozilla/5.0 (compatible; ApartmentScraper/1.0)',
+
+  // Retry configuration
+  RETRY_CONFIG: {
+    maxRetries: 3,
+    baseDelay: 1000, // 1 second, will be: 1s, 2s, 4s
+    timeout: parseInt(process.env.SCRAPER_TIMEOUT, 10) || 30000
+  },
+
+  // Collections (environment variable overrides for development isolation)
+  COLLECTIONS: {
+    UNITS: process.env.SCRAPER_UNITS_COLLECTION || 'units_migration_test',
+    PRICES: process.env.SCRAPER_PRICES_COLLECTION || 'unit_prices_migration_test',
+    DAILY_SUMMARIES: process.env.SCRAPER_SUMMARIES_COLLECTION || 'daily_summaries',
+    SCRAPER_RUNS: process.env.SCRAPER_RUNS_COLLECTION || 'scraper_runs'
+  }
+};