v1.1.2: Smooth HR variation, validation, and UI improvements

- Fix HR variation to use smooth sinusoidal algorithm instead of erratic jumps
- Clamp HR values to ±3 of target (was exceeding bounds)
- Add Pydantic Field validation for device values in API
- Add runtime BPM validation in MCP server
- Add battery slider control for HR monitor
- Add distance display and reset button for treadmill
- Add UI/API version display in header
- Firmware: web portal improvements, battery/distance controls

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -92,6 +92,24 @@ To use pyBTMCP with Claude Desktop, add it to your MCP configuration:
 
 After saving the configuration, restart Claude Desktop. You should see the "ble-simulator" MCP server available.
 
+## MCP Integration (Claude Code CLI)
+
+To add pyBTMCP to Claude Code, run:
+
+```bash
+claude mcp add ble-simulator \
+  -s user \
+  -- docker run -i --rm -p 1883:1883 -p 8000:8000 --name pybtmcp pybtmcp:latest
+```
+
+This adds the MCP server to your user configuration. Use `-s project` instead to add it to the current project only.
+
+To verify the server was added:
+
+```bash
+claude mcp list
+```
+
 ## MCP Tools Reference
 
 Once configured, Claude can use these tools to control BLE devices: