- issue_triage.rs: use check_project_access instead of nonexistent get_project_member
- email/lib.rs: make EMAIL_REGEX pub to suppress dead_code warning
- tracing_fmt.rs: minor import ordering cleanup and code formatting
When stdout is connected to a TTY, use tracing_subscriber's pretty
format with colors instead of single-line JSON. Non-TTY (container
logs, pipes) continue to output JSON for log aggregation.
Override auto-detection via APP_LOG_FORMAT=json|pretty.
Also adds APP_LOG_PRETTY=true to use serde_json::to_string_pretty
for human-readable JSON output (useful for development/debugging).
Add MsgJsonFormat custom event formatter that outputs JSON with _msg as
the first field, required by VictoriaLogs for full-text search. HTTP
middleware stores interpolated "METHOD /path" in thread-local buffer
for the formatter to read on span-close events.
Both init_tracing_subscriber() and init_otlp() were calling try_init()
on the global tracing dispatcher, causing "global default trace dispatcher
has already been set" at runtime when APP_OTEL_ENABLED=true.
Fix: simplify the API so init_tracing_subscriber() never installs the
subscriber — it either calls try_init() immediately (non-OTLP mode) or
returns without installing (OTLP mode, defer=true). init_otlp() now
builds the complete subscriber stack (registry + env_filter + fmt_layer +
otel_layer) and calls try_init() once.
init_tracing_subscriber() signature: (level, defer) → ()
init_otlp() signature: (endpoint, service_name, _, log_level) → Result
The fmt layer is replicated inside init_otlp() for the OTLP path.
