Add [CHANNEL+1] placeholder support for Hikvision-style channel numbering

- Added [CHANNEL+1], [channel+1], {CHANNEL+1}, {channel+1} placeholders to builder.go
- Updated 14 camera brands with universal channel patterns
- Hikvision: replaced 10 hardcoded patterns with 6 universal patterns
- Hiwatch: replaced 4 hardcoded patterns with 8 universal patterns (including ISAPI)
- Other brands: Annke, Swann, Abus, 7links, LevelOne, AlienDVR, Oswoo, AV102IP-40, Acvil, TBKVision, Deltaco, Night Owl
- Universal patterns placed first for faster discovery, hardcoded patterns kept as fallback
- Supports both 0-based (channel=0 -> 101) and 1-based (channel=1 -> 101) numbering
- Added 6 high-priority patterns to popular_stream_patterns.json

data/brands/abus.json

@@ -4,6 +4,42 @@
   "last_updated": "2025-10-17",
   "source": "ispyconnect.com",
   "entries": [
+    {
+      "models": [
+        "ALL"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 554,
+      "url": "/Streaming/Channels/[CHANNEL+1]01"
+    },
+    {
+      "models": [
+        "ALL"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 554,
+      "url": "/Streaming/Channels/[CHANNEL]01"
+    },
+    {
+      "models": [
+        "ALL"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 554,
+      "url": "/Streaming/Channels/[CHANNEL+1]02"
+    },
+    {
+      "models": [
+        "ALL"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 554,
+      "url": "/Streaming/Channels/[CHANNEL]02"
+    },
     {
       "models": [
         "10550",
@@ -320,31 +356,6 @@
       "port": 554,
       "url": "/s2"
     },
-    {
-      "models": [
-        "IPCA53000",
-        "IPCB42510B",
-        "IPCB44510A",
-        "IPCB64515B"
-      ],
-      "type": "FFMPEG",
-      "protocol": "rtsp",
-      "port": 554,
-      "url": "/Streaming/Channels/102"
-    },
-    {
-      "models": [
-        "IPCB42550",
-        "IPCB78520",
-        "NVR10030",
-        "TVIP41500",
-        "TVIP52500"
-      ],
-      "type": "FFMPEG",
-      "protocol": "rtsp",
-      "port": 0,
-      "url": "/Streaming/Channels/101"
-    },
     {
       "models": [
         "IPCB54611B",
@@ -635,6 +646,31 @@
       "protocol": "rtsp",
       "port": 554,
       "url": "/mpeg4/media.amp?resolution=640x480"
+    },
+    {
+      "models": [
+        "IPCA53000",
+        "IPCB42510B",
+        "IPCB44510A",
+        "IPCB64515B"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 554,
+      "url": "/Streaming/Channels/102"
+    },
+    {
+      "models": [
+        "IPCB42550",
+        "IPCB78520",
+        "NVR10030",
+        "TVIP41500",
+        "TVIP52500"
+      ],
+      "type": "FFMPEG",
+      "protocol": "rtsp",
+      "port": 0,
+      "url": "/Streaming/Channels/101"
     }
   ]
 }