Update docs: uptime, kontrol, reboot

INSTRUCTION.md

@@ -116,7 +116,10 @@ All commands are processed in `onGroupDataRecv()`:
 | `status` | report state | `status:armed/off temp:±X.XC hall:trig/ok motion:trig/ok bat:X.XXV/USB` |
 | `ver` | build date | `build:Mon DD YYYY HH:MM:SS` |
 | `scan` | noise floor | `noise:-XXXdBm` |
-| `canal <name> <pass>` | change channel and reboot | `canal test 5674 ok` |
+| `uptime` | device uptime | `uptime:1d 3h 15m` |
+| `kontrol <min>` | auto-status every N min | `kontrol 60 min ok` |
+| `kontrol off` | disable auto-status | `kontrol off` |
+| `reboot` | reboot device | `rebooting` |
 
 ### Response Delay
 
@@ -124,6 +127,12 @@ All command responses are sent with a **5-second delay** (non-blocking, via `def
 The action (relay toggle, armed state change) happens immediately — only the reply text is deferred.  
 Alerts (`alert:hall`, `alert:motion`) and startup (`poweron`) are sent immediately without delay.
 
+### Special Commands
+
+- **`reboot`** — sends `rebooting` immediately (not deferred), blinks LED 5 times, then `NVIC_SystemReset()`.
+- **`uptime`** — calculates uptime from `g_boot_time` (set at boot). Format: `uptime:1d 3h 15m` (days/hours/minutes).
+- **`kontrol <min>`** — sets `g_auto_status_interval = min * 60000`. In `loop()`, when `millis() - g_last_auto_status >= interval`, sends status. Range: 1–1440 minutes.
+
 ### Auto-Sent Messages
 - **Startup:** `poweron Mon DD YYYY HH:MM:SS` — sent 10s after boot.
 - **Hall alert:** `alert:hall` — when armed and reed opens.