Expand roadmap based on community research (vodafonekabelforum.de)

New items:
- Upstream Channel Count Monitoring
- Ingress/Return Path Scoring
- Plain-Language Explanations
- Alerting & Notifications section (Telegram, Discord, webhook, ntfy)
- Power Level Drift Detection
- Scheduled Health Digest
- Gaming/Real-Time Quality Index
- Smokeping Integration
- Segment load indicator
- Network uptime calendar
- Vodafone Station / CommScope driver
- Arris / Technicolor / Sagemcom drivers

Enhanced existing items with user context from forum research.

Author: Dennis Braun

README.md

@@ -159,31 +159,43 @@ DOCSight can optionally publish all channel data to Home Assistant via MQTT Auto
 ## Roadmap
 
 ### Modulation & Signal Intelligence
-- [ ] **Modulation Watchdog**: Track and alert on QAM modulation changes per channel (e.g. 256QAM dropping to 16QAM)
+- [ ] **Modulation Watchdog**: Track and alert on QAM modulation changes per channel (e.g. 256QAM dropping to 16QAM) — the #1 symptom users report in cable forums
 - [ ] **Channel Heatmap**: Visual grid of all channels color-coded by modulation quality — spot frequency-dependent issues at a glance
-- [ ] **OFDMA Analysis**: Detect whether the modem uses a wide OFDMA block vs. many narrow SC-QAMs; flag subcarrier count fluctuations as potential ingress indicators
+- [ ] **OFDMA Analysis**: Detect whether the modem uses a wide OFDMA block vs. many narrow SC-QAMs; flag subcarrier count fluctuations as potential ingress indicators; track OFDMA enable/disable impact
 - [ ] **Adaptive Polling**: Automatically increase poll frequency (e.g. every 10-30s) when uncorrectable errors spike, to capture incidents in high resolution
+- [ ] **Upstream Channel Count Monitoring**: Alert when upstream channels drop (e.g. from 5 to 1) — early indicator of return path issues
+- [ ] **Ingress/Return Path Scoring**: Composite score based on upstream power levels, modulation quality, and channel count to detect return path interference before total failure
 
 ### Diagnosis & Reporting
-- [ ] **Incident Report Export**: One-click PDF/report with worst modulation values, max power levels, error sums, and auto-generated ISP complaint text referencing DIN thresholds
-- [ ] **Ping Correlation**: Built-in latency monitor (ping to Google/Cloudflare) overlaid on error graphs to prove causality between physical layer issues and packet loss
+- [ ] **Incident Report Export**: One-click PDF/report with worst modulation values, max power levels, error sums, and auto-generated ISP complaint text referencing DIN thresholds — ready to email to your ISP's tech support
+- [ ] **Ping Correlation**: Built-in latency monitor (ping to configurable targets) overlaid on error graphs to prove causality between physical layer issues and packet loss — replaces manual PingPlotter usage
 - [ ] **Before/After Comparison**: Side-by-side overlay of two time periods (e.g. week before vs. after technician visit) to quantify improvements
 - [ ] **FritzBox Event Log Parser**: Extract and display T3/T4 Timeout events, Ranging Request failures, and other DOCSIS error codes from the modem's event log
+- [ ] **Plain-Language Explanations**: "What does this mean?" tooltips translating technical values into actionable advice (e.g. "Your upstream power is critically high — this means the signal has to travel too far or passes through damaged cable")
+
+### Alerting & Notifications
+- [ ] **Notification System**: Configurable alerts via webhook, Telegram, Discord, email, or Gotify/ntfy on health degradation, modulation drops, or connectivity loss
+- [ ] **Power Level Drift Detection**: Alert on relative changes (e.g. +3 dB in 24h) in addition to absolute thresholds — catch creeping degradation before it causes outages
+- [ ] **Scheduled Health Digest**: Daily/weekly summary email or message with connection quality score, error trends, and notable events
+- [ ] **Gaming/Real-Time Quality Index**: Dedicated score for latency-sensitive applications based on jitter, packet loss bursts, and modulation stability
 
 ### External Monitoring Integration
 - [x] **ThinkBroadband BQM**: Daily fetch and archive of external broadband quality graphs (latency, packet loss)
 - [ ] **Speedtest Tracker**: Pull speed test results (download, upload, ping, jitter) from self-hosted [Speedtest Tracker](https://github.com/alexjustesen/speedtest-tracker)
+- [ ] **Smokeping Integration**: Import or display Smokeping latency data alongside DOCSIS metrics for end-to-end correlation
 
 ### Enhanced Dashboard
-- [ ] Combined timeline: DOCSIS health + speed tests + BQM graph on a single time axis
-- [ ] Notification system: Webhooks on health degradation
+- [ ] Combined timeline: DOCSIS health + speed tests + BQM graph + ping data on a single time axis
 - [ ] Mobile-responsive layout
-- [ ] Power level drift detection: Alert on relative changes (e.g. +3 dB in 24h) in addition to absolute thresholds
+- [ ] Segment load indicator: Visualize peak-hour degradation patterns (e.g. 20:00–23:00 slowdowns)
+- [ ] Network uptime calendar: Month-view heatmap showing daily connection quality at a glance
 
 ### Multi-Modem Support
 - [ ] Plugin architecture for modem drivers
+- [ ] **Vodafone Station / CommScope driver**: Support for the most common ISP-provided cable modem in Germany
+- [ ] **Arris / Technicolor / Sagemcom drivers**: Cover the long tail of ISP-provided hardware
 - [ ] SNMP-based generic driver for additional cable modem models
-- [ ] Community-contributed drivers (Arris, Technicolor, Sagemcom, etc.)
+- [ ] Community-contributed drivers with documentation template
 
 ## Contributing