feat(policy-file): move channel overrides to standalone channelPoliciesFile with hot reload

docs/CONFIG.example.json

@@ -13,13 +13,7 @@
           "humanList": ["561921120408698910"],
           "agentList": [],
           "endSymbols": ["🔚"],
-          "channelPolicies": {
-            "1476369680632647721": {
-              "listMode": "agent-list",
-              "agentList": ["1474088632750047324"],
-              "endSymbols": ["🔚"]
-            }
-          },
+          "channelPoliciesFile": "~/.openclaw/whispergate-channel-policies.json",
           "noReplyProvider": "whisper-gateway",
           "noReplyModel": "no-reply",
           "enableDiscordControlTool": true,

docs/INTEGRATION.md

@@ -54,7 +54,8 @@ Environment overrides:
 - `LIST_MODE` (`human-list` or `agent-list`)
 - `HUMAN_LIST_JSON`
 - `AGENT_LIST_JSON`
-- `CHANNEL_POLICIES_JSON`
+- `CHANNEL_POLICIES_FILE` (standalone channel policy file path)
+- `CHANNEL_POLICIES_JSON` (only used to initialize file when missing)
 - `END_SYMBOLS_JSON`
 
 The script:

docs/channel-policies.example.json

@@ -0,0 +1,12 @@
+{
+  "1476369680632647721": {
+    "listMode": "agent-list",
+    "agentList": ["1474088632750047324"],
+    "endSymbols": ["🔚"]
+  },
+  "another-channel-id": {
+    "listMode": "human-list",
+    "humanList": ["561921120408698910"],
+    "endSymbols": ["🔚"]
+  }
+}