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CarillonPro Changelog

All notable changes to this project will be documented here. Loosely following keepachangelog.com format, loosely.

[3.2.1] - 2026-07-03

Fixed

  • Fatigue detection thresholds — finally. The old values were calibrated on a 6-bell tower; everything above 8 was throwing false positives after like 20 minutes. Raised the base BPM ceiling from 112 to 134 for 10+ bell configs, and softened the wrist-angle variance penalty (was 0.7, now 0.52). Tested against the Coventry dataset Priya sent over. See #GH-2291.

    • NOTE: the 8-bell threshold is still a guess. TODO: ask Mehmet to run the simulator with the new Exeter logs
    • cumulative fatigue score resets now happen on method splices, not just on touch boundaries — this actually matters for long peals, previous behavior was wrong for months and nobody noticed until Lieselotte filed the bug

  • Diocesan bridge — the XML namespace collision with the CoE administration layer has been driving me insane since March. The //diocese:tower/services xpath was shadowing our internal services node when the bridge ran in passthrough mode. Added explicit namespace prefix registration in src/bridge/diocese_connector.rs. Also fixed a crash when the diocese endpoint returns HTTP 204 with a body (which apparently some installations do??? why)

    • Bumped retry backoff from 2s to 5s because the Bradford server times out under load and was triggering our circuit breaker incorrectly
    • Auth token refresh now happens 60s before expiry instead of at expiry. I can't believe this wasn't the case before. ref: issue #2318

Added

  • New change-ringing methods:

    • Erin Triples — was missing from the method library, someone noticed at the Guildford symposium apparently
    • Superlative Surprise Major — full lead head table added, with course/calling position labels. The lead end notation took me way too long, I kept getting the 7-8 pair wrong. c'est la vie
    • Cambridge Surprise Royal — added 10-bell variant. The 8-bell was already there since v2.1 but nobody added Royal. Unbelievable
    • Method import now accepts MicroSiril .m files directly, not just BellBoard XML. Converts on ingest. Probably has edge cases I haven't found yet

  • Touch composer: new "avoid course heads" filter option — lets you exclude specific course ends during composition search. Useful for avoiding back-rounds-adjacent courses in longer touches. Added at Nikolaj's request (he's been asking since last October, sorry man)

Changed

  • Upgraded tokio to 1.41.x — had to patch the timer precision stuff, we were seeing 8ms jitter on the striking engine callback which is... not great for a timing-critical app. Down to ~1.2ms now on the bench. Probably fine
  • Conductor display now shows method stage as an icon glyph instead of text abbreviation. Smaller and cleaner. The font rendering on the 7" Pi display was clipping "Maximus" anyway
  • Striking analysis report: changed default window from 16 changes to 24. Nobody uses 16

Removed

  • Dropped the legacy_midi_bridge module. It's been deprecated since 2.8 and the last person who used it was me, in 2024, by accident

[3.2.0] - 2026-04-11

Added

  • Initial diocesan bridge integration (CoE and RC diocese schemas)
  • Fatigue detection module — erste Version, thresholds obviously needed tuning (see 3.2.1)
  • BellBoard live sync for peal submissions

Fixed

  • Striking engine drift on towers with asymmetric stay configurations
  • Method library search was case-sensitive. Embarrassing

[3.1.4] - 2026-02-07

Fixed

  • Crash on startup when ~/.carillon/tower.toml missing (introduced in 3.1.3 — that refactor broke the config fallback path, classic)
  • PDF peal certificate generation: long method names were overflowing the footer. Clamped to 48 chars with ellipsis

[3.1.3] - 2026-01-19

Changed

  • Config system refactored to use TOML throughout. The old mixed TOML/INI situation was, to put it diplomatically, un désastre

Added

  • Tower profile import from CSV (requested by the ringing societies bulk-onboarding workflow)

[3.1.0] - 2025-11-02

Added

  • Multi-tower mode (beta) — manage up to 4 towers from single instance
  • Striking analysis v2: per-bell accuracy breakdowns, exportable

Changed

  • Minimum Rust edition bumped to 2021

[3.0.0] - 2025-07-15

Initial 3.x release. Rewrote the striking engine from scratch. The old one was... look, we don't talk about the old one.