docs: shorten README telemetry section

Replace the verbose bulleted overview with a tight three-sentence blurb
that names what's collected, where the opt-outs live, and points readers
to docs/TELEMETRY.md for everything else.

Co-authored-by: Isaac

Author: samikshya-db

README.md

@@ -53,50 +53,15 @@ client
 
 ## Telemetry
 
-The Databricks SQL Driver for Node.js includes an **opt-in telemetry system** that collects driver usage metrics and performance data to help improve the driver. Telemetry is **disabled by default** and follows a **privacy-first design**.
-
-### Key Features
-
-- **Privacy-first**: No SQL queries, results, or sensitive data is ever collected
-- **Opt-in**: Controlled by server-side feature flag (disabled by default)
-- **Non-blocking**: All telemetry operations are asynchronous and never impact your queries
-- **Resilient**: Circuit breaker protection prevents telemetry failures from affecting your application
-
-### What Data is Collected?
-
-When enabled, the driver collects:
-
-- ✅ Driver version and configuration settings
-- ✅ Query performance metrics (latency, chunk counts, bytes downloaded)
-- ✅ Error types and status codes
-- ✅ Feature usage (CloudFetch, Arrow format, compression)
-
-**Never collected**:
-
-- ❌ SQL query text
-- ❌ Query results or data values
-- ❌ Table/column names or schema information
-- ❌ User credentials or personal information
-
-### Configuration
-
-To enable or disable telemetry explicitly:
-
-```javascript
-const client = new DBSQLClient({
-  telemetryEnabled: true, // Enable telemetry (default: false)
-});
-
-// Or override per connection:
-await client.connect({
-  host: '********.databricks.com',
-  path: '/sql/2.0/warehouses/****************',
-  token: 'dapi********************************',
-  telemetryEnabled: false, // Disable for this connection
-});
-```
-
-For detailed documentation including configuration options, event types, troubleshooting, and privacy details, see [docs/TELEMETRY.md](docs/TELEMETRY.md).
+The driver emits connection, statement, and CloudFetch metrics plus
+redacted error events to help Databricks improve driver reliability. No
+SQL text, parameter values, or row data is ever collected. Emission is
+gated by a server-side feature flag and can be disabled per-connection
+with `telemetryEnabled: false` or globally with the
+`DATABRICKS_TELEMETRY_DISABLED` env var.
+
+See [docs/TELEMETRY.md](docs/TELEMETRY.md) for the full event payloads,
+tuning knobs, multi-tenant guidance, and troubleshooting.
 
 ## Run Tests