Discord: CV2! (#16364)

docs/channels/discord.md

@@ -482,6 +482,30 @@ Default gate behavior:
 | moderation                                                                                                                                                               | disabled |
 | presence                                                                                                                                                                 | disabled |
 
+## Components v2 UI
+
+OpenClaw uses Discord components v2 for exec approvals and cross-context markers. Discord message actions can also accept `components` for custom UI (advanced; requires Carbon component instances), while legacy `embeds` remain available but are not recommended.
+
+- `channels.discord.ui.components.accentColor` sets the accent color used by Discord component containers (hex).
+- Set per account with `channels.discord.accounts.<id>.ui.components.accentColor`.
+- `embeds` are ignored when components v2 are present.
+
+Example:
+
+```json5
+{
+  channels: {
+    discord: {
+      ui: {
+        components: {
+          accentColor: "#5865F2",
+        },
+      },
+    },
+  },
+}
+```
+
 ## Voice messages
 
 Discord voice messages show a waveform preview and require OGG/Opus audio plus metadata. OpenClaw generates the waveform automatically, but it needs `ffmpeg` and `ffprobe` available on the gateway host to inspect and convert audio files.
@@ -574,6 +598,7 @@ High-signal Discord fields:
 - media/retry: `mediaMaxMb`, `retry`
 - actions: `actions.*`
 - presence: `activity`, `status`, `activityType`, `activityUrl`
+- UI: `ui.components.accentColor`
 - features: `pluralkit`, `execApprovals`, `intents`, `agentComponents`, `heartbeat`, `responsePrefix`
 
 ## Safety and operations