Add Smart Capture to README feature table and screenshot

Author: itsDNNS

README.md

@@ -143,6 +143,7 @@ The longer DOCSight runs, the stronger your evidence gets.
 | **[Cable Segment Utilization](https://github.com/itsDNNS/docsight/wiki/Features-Segment-Utilization)** | FRITZ!Box cable segment load monitoring with downstream/upstream utilization charts |
 | **[Channel Timeline](https://github.com/itsDNNS/docsight/wiki/Features-Channel-Timeline)** | Per-channel power, SNR, error, and modulation history with multi-channel comparison overlay |
 | **[Speedtest Integration](https://github.com/itsDNNS/docsight/wiki/Features-Speedtest)** | Speed test history from [Speedtest Tracker](https://github.com/alexjustesen/speedtest-tracker) |
+| **[Smart Capture](https://github.com/itsDNNS/docsight/wiki/Features-Smart-Capture)** | Automatically triggers speedtests when signal degradation is detected, with configurable triggers and guardrails |
 | **[BNetzA Measurements](https://github.com/itsDNNS/docsight/wiki/Features-BNetzA)** | Upload or auto-import official BNetzA broadband measurement protocols (PDF/CSV) |
 | **[BQM Integration](https://github.com/itsDNNS/docsight/wiki/Features-BQM)** | ThinkBroadband broadband quality graphs |
 | **[Smokeping Integration](https://github.com/itsDNNS/docsight/wiki/Features-Smokeping)** | External latency graphs from your Smokeping instance |