* feat: make #sl status command trigger configurable (exact match, max 32 char)
The trigger word for the built-in #sl status command is now configurable
via statusCommand.trigger, with exact case-insensitive matching preserved.
* chore: reject control chars in trigger + add sync assertion
A hardcoded `#sl` status command — deliberately NOT a plugin system.
Matched at the instance dispatch choke point: a pure-text message equal
to `#sl` (exact, trimmed, case-insensitive — no startsWith) replies with
SnowLuma version / platform / uptime in the same conversation.
- Anyone can trigger; the per-UIN `statusCommand.enabled` toggle is the
only gate (default on). Per-conversation cooldown (default 5s,
configurable) prevents flood/风控 from repeated triggers.
- `swallow` (default false / pass-through): when set, a matched `#sl` is
not forwarded to downstream adapters — still cached, logged, replied.
- Config on OneBotConfig.statusCommand (per-UIN): defaulted + clamped in
config.ts, mirrored/normalized in the WebUI; edits hot-reload via the
shared instance context.
- WebUI: a "内置命令" section in the 通用设置 tab (enable / swallow /
cooldown). Node enable toggle extracted into a shared ui/ToggleSwitch.
Pure matcher / cooldown / uptime / text helpers live in
modules/status-command with unit tests; config defaults + clamp covered.
DrSmoothl