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CHANGELOG

All notable changes to PetrichorSage are documented here. Format loosely based on Keep a Changelog.

[Unreleased]

  • maybe rewrite the sensor aggregation pipeline, Tomasz keeps complaining about latency spikes after 11pm UTC

[2.4.1] - 2026-07-08

Fixed

  • Subsidence flagging: thresholds were off by like 12cm in edge cases when soil moisture delta exceeded 0.4 in under 6 hours. turns out we were comparing against the wrong baseline epoch (see #CR-2291 — this was reported in March and I forgot about it until Renata yelled at me on Friday)

    • added hysteresis window (847ms debounce, calibrated against our Q1 2026 field data from the Castellón sites)
    • flagging now correctly handles multi-layer subsidence when the upper stratum is already saturated
    • false positive rate dropped from ~18% to under 3% in our test dataset — finally

  • Irrigation scheduler: cron expressions were silently failing when DST transitions fell inside an active watering window. not sure how this ever worked in staging, staging is in UTC so of course we never caught it

    • patched scheduleNextRun() to clamp against wall-clock rather than UTC offset
    • also fixed the off-by-one on weekly cycle resets (issue #841, open since November, I know)
    • evapotranspiration coefficient was being read from the wrong config key after the v2.3.0 refactor. et_coefficient vs etCoefficient — кто-то не подумал об этом. anyway it's fixed now

  • Compliance report generation: PDF export was truncating the third decimal place on volumetric flow totals, which is kind of a problem when regulators are involved

    • formatFlowTotal() now respects the precision setting in report_config.yaml (default: 4 decimal places)
    • fixed a crash when the reporting period spans a leap day — we hit this in the Feb 2026 batch and never actually fixed the root cause, just reran the reports manually. not anymore
    • localized date headers now actually use the locale from the org settings instead of always rendering en-US (lo siento, Beatriz)

Changed

  • subsidence alert emails now include the raw sensor readings in the attachment, not just the derived delta — field teams were asking for this for months
  • bumped minimum Python to 3.11 because we're using tomllib without the backport anymore

Notes

[2.4.0] - 2026-05-19

Added

  • multi-site dashboard view (finally)
  • webhook support for third-party SCADA integrations
  • experimental: ML-based early subsidence prediction (disabled by default, set features.experimental_ml: true)

Fixed

  • sensor reconnection logic was too aggressive during network partitions
  • SiteConfig.validate() raised a confusing error when GPS coords were provided as strings instead of floats

[2.3.2] - 2026-04-02

Fixed

  • hotfix for null reference in IrrigationZone.getNextWindow() when zone has no schedule assigned
  • compliance templates were missing the regulatory body field for EU sites

[2.3.1] - 2026-03-15

Fixed

  • broken import path after directory restructure in 2.3.0 (sorry, I moved too fast on the refactor)

[2.3.0] - 2026-03-10

Added

  • new subsidence detection engine (replaced the old threshold-only approach)
  • irrigation scheduling v2 — finally supports per-zone ET correction
  • compliance report generation (initial release, rough around the edges, pending feedback from the Andalucía pilot)

Removed

  • legacy FlatFileExporter class — moved to separate petrichor-sage-legacy-export package for anyone who still needs it

[2.2.x] - 2025 releases

See CHANGELOG_2025.md for archived entries.