fix: add MiniMax highspeed variants and deduplicate model list

- Add MiniMax-M2.7/M2.5/M2.1/M2 -highspeed variants for both
  international and China providers (#17)
- Deduplicate models in /available-models response to fix
  repeated entries when using Copilot or other providers (#18)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/client/src/shared/providers.ts

@@ -86,13 +86,13 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
     label: 'MiniMax',
     value: 'minimax',
     base_url: 'https://api.minimax.io/anthropic/v1',
-    models: ['MiniMax-M2.7', 'MiniMax-M2.5', 'MiniMax-M2.1', 'MiniMax-M2'],
+    models: ['MiniMax-M2.7', 'MiniMax-M2.7-highspeed', 'MiniMax-M2.5', 'MiniMax-M2.5-highspeed', 'MiniMax-M2.1', 'MiniMax-M2.1-highspeed', 'MiniMax-M2', 'MiniMax-M2-highspeed'],
   },
   {
     label: 'MiniMax (China)',
     value: 'minimax-cn',
     base_url: 'https://api.minimaxi.com/v1',
-    models: ['MiniMax-M2.7', 'MiniMax-M2.5', 'MiniMax-M2.1', 'MiniMax-M2'],
+    models: ['MiniMax-M2.7', 'MiniMax-M2.7-highspeed', 'MiniMax-M2.5', 'MiniMax-M2.5-highspeed', 'MiniMax-M2.1', 'MiniMax-M2.1-highspeed', 'MiniMax-M2', 'MiniMax-M2-highspeed'],
   },
   {
     label: 'Alibaba Cloud',

packages/server/src/routes/hermes/filesystem.ts

@@ -513,21 +513,40 @@ fsRoutes.get('/api/hermes/available-models', async (ctx) => {
       for (const result of results) {
         if (result.status === 'fulfilled' && result.value.models.length > 0) {
           const { key, label, base_url, models } = result.value
-          groups.push({ provider: key, label, base_url, models })
+          groups.push({ provider: key, label, base_url, models: [...new Set(models)] })
         } else if (result.status === 'rejected') {
           console.error(`[available-models] Failed: ${result.reason?.message || result.reason}`)
         }
       }
     }
 
+    // Deduplicate models within each group and merge groups with the same provider key
+    const dedupedGroups: typeof groups = []
+    const seenProviders = new Map<string, number>()
+    for (const g of groups) {
+      g.models = [...new Set(g.models)]
+      const existingIdx = seenProviders.get(g.provider)
+      if (existingIdx !== undefined) {
+        // Merge models into existing group
+        const existing = dedupedGroups[existingIdx]
+        const existingSet = new Set(existing.models)
+        for (const m of g.models) {
+          if (!existingSet.has(m)) existing.models.push(m)
+        }
+      } else {
+        seenProviders.set(g.provider, dedupedGroups.length)
+        dedupedGroups.push(g)
+      }
+    }
+
     // Fallback: if no providers returned models, fall back to config.yaml parsing
-    if (groups.length === 0) {
+    if (dedupedGroups.length === 0) {
       const fallback = buildModelGroups(config)
       ctx.body = fallback
       return
     }
 
-    ctx.body = { default: currentDefault, groups }
+    ctx.body = { default: currentDefault, groups: dedupedGroups }
   } catch (err: any) {
     ctx.status = 500
     ctx.body = { error: err.message }

packages/server/src/shared/providers.ts

@@ -86,13 +86,13 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
     label: 'MiniMax',
     value: 'minimax',
     base_url: 'https://api.minimax.io/anthropic/v1',
-    models: ['MiniMax-M2.7', 'MiniMax-M2.5', 'MiniMax-M2.1', 'MiniMax-M2'],
+    models: ['MiniMax-M2.7', 'MiniMax-M2.7-highspeed', 'MiniMax-M2.5', 'MiniMax-M2.5-highspeed', 'MiniMax-M2.1', 'MiniMax-M2.1-highspeed', 'MiniMax-M2', 'MiniMax-M2-highspeed'],
   },
   {
     label: 'MiniMax (China)',
     value: 'minimax-cn',
     base_url: 'https://api.minimaxi.com/v1',
-    models: ['MiniMax-M2.7', 'MiniMax-M2.5', 'MiniMax-M2.1', 'MiniMax-M2'],
+    models: ['MiniMax-M2.7', 'MiniMax-M2.7-highspeed', 'MiniMax-M2.5', 'MiniMax-M2.5-highspeed', 'MiniMax-M2.1', 'MiniMax-M2.1-highspeed', 'MiniMax-M2', 'MiniMax-M2-highspeed'],
   },
   {
     label: 'Alibaba Cloud',