feat(channels/yuanbao): add Yuanbao channel provider

Cargo.toml

@@ -56,6 +56,9 @@ argon2 = "0.5"
 rand = "0.10"
 dirs = "5"
 sha2 = "0.10"
+# Legacy SHA-1 only used for Tencent COS HMAC-SHA1 signing (yuanbao
+# channel media upload). Not used for any new security-sensitive work.
+sha1 = "0.10"
 hmac = "0.12"
 # Archive extraction for the Node.js runtime bootstrap. Unix Node
 # distributions ship as .tar.xz, Windows as .zip. `xz2` with `static`

app/src/components/channels/ChannelSelector.tsx

@@ -5,24 +5,36 @@ import { useT } from '../../lib/i18n/I18nContext';
 import { useAppSelector } from '../../store/hooks';
 import type { ChannelConnectionStatus, ChannelDefinition, ChannelType } from '../../types/channels';
 import ChannelStatusBadge from './ChannelStatusBadge';
+import YuanbaoIcon from './YuanbaoIcon';
 
 interface ChannelSelectorProps {
   definitions: ChannelDefinition[];
   selectedChannel: ChannelType;
   onSelectChannel: (channel: ChannelType) => void;
 }
 
+// Emoji icons for channels rendered as plain text. `yuanbao` is handled
+// separately with a branded SVG (see `YuanbaoIcon`).
 const CHANNEL_ICONS: Record<string, string> = {
   telegram: '✈️',
   discord: '🎮',
   web: '🌐',
+  yuanbao: '🟡',
   mcp: '🔌',
 };
 
+const renderChannelIcon = (icon: string) =>
+  icon === 'yuanbao' ? (
+    <YuanbaoIcon />
+  ) : (
+    <span className="text-base">{CHANNEL_ICONS[icon] ?? ''}</span>
+  );
+
 /** Virtual (static) tabs that are not backed by a ChannelDefinition from the core. */
 const VIRTUAL_TABS: { id: ChannelType; display_name: string }[] = [
   { id: 'mcp', display_name: 'MCP Servers' },
 ];
+
 const CHANNEL_STATUS_PRIORITY: ChannelConnectionStatus[] = [
   'connected',
   'connecting',
@@ -84,7 +96,7 @@ const ChannelSelector = ({
                   : 'border-stone-200 dark:border-neutral-800 bg-stone-50 dark:bg-neutral-800/60 text-stone-600 dark:text-neutral-300 hover:border-stone-300 dark:hover:border-neutral-700'
               }`}>
               <span className="flex items-center gap-2">
-                <span className="text-base">{CHANNEL_ICONS[def.icon] ?? ''}</span>
+                {renderChannelIcon(def.icon)}
                 <span className="font-medium">{def.display_name}</span>
               </span>
               <ChannelStatusBadge status={bestStatus} />
@@ -105,7 +117,7 @@ const ChannelSelector = ({
                   ? 'border-primary-500/60 bg-primary-50 dark:bg-primary-500/15 text-primary-600 dark:text-primary-300'
                   : 'border-stone-200 dark:border-neutral-800 bg-stone-50 dark:bg-neutral-800/60 text-stone-600 dark:text-neutral-300 hover:border-stone-300 dark:hover:border-neutral-700'
               }`}>
-              <span className="text-base">{CHANNEL_ICONS[tab.id] ?? ''}</span>
+              {renderChannelIcon(tab.id)}
               <span className="font-medium">{tab.display_name}</span>
             </button>
           );

app/src/components/channels/ChannelSetupModal.tsx

@@ -9,7 +9,12 @@ import { useT } from '../../lib/i18n/I18nContext';
 import type { ChannelDefinition, ChannelType } from '../../types/channels';
 import DiscordConfig from './DiscordConfig';
 import TelegramConfig from './TelegramConfig';
+import YuanbaoConfig from './YuanbaoConfig';
+import YuanbaoIcon from './YuanbaoIcon';
 
+// Emoji icons for channels rendered as plain text. `yuanbao` is handled
+// separately with a branded SVG (see `YuanbaoIcon`) — matches the
+// rendering used in `ChannelSelector`.
 const CHANNEL_ICONS: Record<string, string> = {
   telegram: '\u2708\uFE0F',
   discord: '\uD83C\uDFAE',
@@ -29,6 +34,8 @@ function ChannelConfigContent({ definition }: { definition: ChannelDefinition })
       return <TelegramConfig definition={definition} />;
     case 'discord':
       return <DiscordConfig definition={definition} />;
+    case 'yuanbao':
+      return <YuanbaoConfig definition={definition} />;
     default:
       return (
         <p className="text-sm text-stone-400 dark:text-neutral-500 py-4">
@@ -62,7 +69,8 @@ export default function ChannelSetupModal({ definition, onClose }: ChannelSetupM
     if (e.target === e.currentTarget) onClose();
   };
 
-  const icon = CHANNEL_ICONS[definition.icon] ?? '';
+  const emojiIcon = CHANNEL_ICONS[definition.icon] ?? '';
+  const isYuanbao = definition.icon === 'yuanbao';
 
   const modalContent = (
     <div
@@ -86,7 +94,11 @@ export default function ChannelSetupModal({ definition, onClose }: ChannelSetupM
           <div className="flex items-start justify-between">
             <div className="flex-1 min-w-0 pr-2">
               <div className="flex items-center gap-2">
-                {icon && <span className="text-base">{icon}</span>}
+                {isYuanbao ? (
+                  <YuanbaoIcon className="w-5 h-5" />
+                ) : (
+                  emojiIcon && <span className="text-base">{emojiIcon}</span>
+                )}
                 <h2
                   id="channel-setup-title"
                   className="text-base font-semibold text-stone-900 dark:text-neutral-100">