Turnpoint v0.0.2

Feedback from the first test build, plus automatic updates.

Added

• Automatic updates — on launch Turnpoint checks GitHub for a newer release
  and shows an update banner with a one-click Update now (downloads and runs
  the installer on Windows). This is the only time the app goes online, and it
  can be turned off in Settings.
• What's New & Updates sidebar pages — the changelog and a software-update
  panel (version, Check for updates, release notes and one-click Update
  now) are now their own sections in the left sidebar; the Updates item shows a
  dot when a new version is available.
• Lactate at the thresholds — the IAS/IANS anchor cards now show the lactate
  value (mmol/L), and it updates live while you drag a marker (e.g. LTP1/LTP2).
• Training zones in the report — the 5-zone table is now part of the report.
• Reports save with a filename built from the athlete name and test date
  (e.g. Bogner-Markus_2026-06-30).

Changed

• Editable templates — every template, including the predefined Running and
  Cycling protocols, can now be edited — not only cloned.
• Bolder zone colours — the training-zone colours are stronger and easier to
  read at a glance.
• Report in colour — the report's charts and tables now use the same colours
  as the on-screen analysis instead of greyscale.
• One sheet for raw data + curve — the raw step-data table and the lactate
  performance curve are shown together on a single page (reference-report page 2).

Turnpoint v0.0.1

First internal test build — the initial implementation, bundled for early
testers. Everything below ships in this build.

Added

• Athletes — create, edit, delete and search athletes; per-athlete test
  history.
• Step-test entry — spreadsheet-style grid with clipboard paste; predefined
  Running and Cycling templates, plus custom templates you can create, clone,
  edit and delete.
• Analysis — lactate curve fitting and 16 threshold methods (OBLA 2/4/6,
  Bsln+, Log-log, Dmax, ModDmax, Exp-Dmax, LTP1/2, IAT, LTratio, D2Lmax, MAX),
  validated against the WinLactat reference report (e.g. OBLA 4.0 → 16.1 km/h /
  167 bpm).
• Configurable analysis — enable/disable individual methods, configure their
  parameters (OBLA concentrations, baseline deltas), and choose the displayed
  curve fit (polynomial / exponential / spline).
• Training zones — the 5-zone model (REKOM–SB) anchored on the aerobic
  (IAS) and anaerobic (IANS) thresholds, with a selectable training profile and
  per-anchor controls (pick the source method, type an exact intensity, or drag
  the marker on the chart; reset to automatic anytime).
• Charts — an interactive fitting chart with draggable IAS/IANS markers and
  toggleable layers (curve, heart rate, points, zones), plus a temporal results
  chart (lactate + heart rate over time with intensity step bars).
• Reporting — a configurable report: include/omit/reorder content blocks,
  add a header, footer, logo and free-text evaluation; print or save as PDF, and
  export the chart as PNG/SVG and the data as CSV.
• Data — local-first single-file SQLite storage with one-click database
  backup and restore; all data stays on your machine, no network required.
• Look & feel — light and dark themes; a frameless window with
  platform-appropriate controls (macOS traffic lights, Windows/Linux buttons).

Known limitations

• Threshold values are validated against the WinLactat reference report;
  parity with the lactater R package is still pending.
• Only the "Laufen Leistungssportler (6×/Woche)" zone profile is calibrated;
  the other profiles are provisional.
• Energy expenditure (kcal/h) uses a provisional formula and requires a body
  mass to be entered.
• PDF export goes through the system print dialog; there is no headless/batch
  PDF yet.