Native mode (from DB config) was not accounted for when sizing the
connection pool or setting SLEEP_QUEUE, because both read NUM_WORKERS
from env which is never set when native mode is configured via the
worker group config in the database.
- Resolve native mode early (before connect_db) by querying the config
table with the initial DB connection
- Pass num_workers directly to connect_db instead of re-reading env
- Replace SLEEP_QUEUE lazy_static with sleep_queue() function that
checks NATIVE_MODE_RESOLVED at runtime (returns 300ms for native)
- Set NATIVE_MODE_RESOLVED immediately when is_native_mode_from_env()
- Allow native_mode in CE worker group config (was silently stripped)
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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