enricobuehler 57446f9ed9 feat(core): ABI v25 — punktfunk_set_log_callback, so the Apple client hears the core's log lines ...

The core logs through tracing; the desktop and Android shells install a subscriber/logger and
see those lines, the Swift client installed none and saw nothing — every transport warning,
quinn connection event and rustls handshake note vanished, and a client log bundle sent to the
host carried the shell's half only.

- punktfunk_set_log_callback(max_level, cb, user): a log::Log backend behind a C callback
  (level, target, message, user), level-gated by log::set_max_level so anything above the
  ceiling costs no formatting; NULL detaches; Unsupported when another log backend already owns
  the process (android_logger). tracing's `log` feature declared explicitly by the core — it was
  on transitively via quinn, which an ABI promise must not rest on. ABI_VERSION 24 → 25, header
  regenerated, embedding doc §2.6.
- Apple: CoreLog.install() at app start routes the lines into ClientLog under core.<crate>
  (os_log + the send-to-host ring), info ceiling by default (PUNKTFUNK_CORE_LOG_LEVEL raises it).
- Test: a log record and a tracing event both reach the callback with level/target/message,
  interior NUL dropped not truncated, ceiling honoured, detach silences.

2026-08-19 18:33:59 +02:00

..

punktfunk_core.h

feat(core): ABI v25 — punktfunk_set_log_callback, so the Apple client hears the core's log lines

2026-08-19 18:33:59 +02:00