Changelog

[Unreleased]

setup(name, *, level, file, json, max_bytes, backup_count, fmt, redact) — one-call logger configuration with RotatingFileHandler and a TTY-aware console handler (uses codechu-term.is_tty if installed, else sys.stderr.isatty).
Context(**fields) — context manager backed by contextvars. Nested scopes merge, child wins on key conflict, propagation survives await and asyncio.Task boundaries.
bind(logger, **fields) and structured(logger) — return a StructuredLogger that lifts call-site kwargs into the structured payload of every record.
JSON formatter emitting one object per line: ts (ISO-8601 UTC), level, logger, msg, fields, exc_info, pid, thread.
Redaction via setup(..., redact=[...]) — replaces listed keys with <redacted> in both text and JSON output.