Add EVC tlog parser and chart generator

[Copilot]

Parse Tykon EVC transaction logs (downloaded via RF Data Logger) and generate matplotlib charts from the session data.

Core modules

• tlog_parser.py — parses collect_tlog_2.0 format files into TlogFile/TlogRecord dataclasses; extracts metadata from // comment headers, per-session rows, and the Printed from SN: trailer
• plotter.py — generates 5 chart types; faulted sessions (fault != "0000") highlighted in red:
  • Energy per session, session duration (bar charts)
  • Energy over time, cumulative energy (time-series)
  • Daily energy totals (when log spans ≥ 2 days)
• tlog2chart.py — CLI entry point

Usage

python tlog2chart.py sample_data/sample_tlog.txt -o charts/
# or glob multiple files
python tlog2chart.py logs/*_tlog.txt -o charts/

Other

• sample_data/sample_tlog.txt — 20-session reference file in collect_tlog_2.0 format
• 29 pytest tests covering parser (metadata, records, empty tlog) and plotter (all chart files created)
• requirements.txt: matplotlib>=3.7

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/search/repositories
  • Triggering command: /usr/bin/curl curl -s REDACTED (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

plot EVC tlog data

---

📱 Kick off Copilot coding agent tasks wherever you are with GitHub Mobile, available on iOS and Android.