fix(server): disable claude-acp and copilot providers from registry

These providers cause old mobile clients (<=0.1.40) to fail parsing
the list_available_providers_response because their AgentProviderSchema
enum rejects unknown provider IDs, dropping the entire message and
leaving the model picker empty.

The provider implementations remain in the codebase — only the manifest
entries and factory registrations are removed until the updated mobile
app (0.1.43) is live in the App Store.

packages/server/src/server/agent/provider-manifest.ts

@@ -137,18 +137,6 @@ export const AGENT_PROVIDER_DEFINITIONS: AgentProviderDefinition[] = [
       defaultModel: "haiku",
     },
   },
-  {
-    id: "claude-acp",
-    label: "Claude ACP",
-    description: "Claude Code via Agent Client Protocol with streaming, permissions, and session resume",
-    defaultModeId: "default",
-    modes: CLAUDE_MODES,
-    voice: {
-      enabled: true,
-      defaultModeId: "default",
-      defaultModel: "haiku",
-    },
-  },
   {
     id: "codex",
     label: "Codex",
@@ -161,13 +149,6 @@ export const AGENT_PROVIDER_DEFINITIONS: AgentProviderDefinition[] = [
       defaultModel: "gpt-5.1-codex-mini",
     },
   },
-  {
-    id: "copilot",
-    label: "Copilot",
-    description: "GitHub Copilot via Agent Client Protocol with dynamic modes and session support",
-    defaultModeId: "https://agentclientprotocol.com/protocol/session-modes#agent",
-    modes: COPILOT_MODES,
-  },
   {
     id: "opencode",
     label: "OpenCode",

packages/server/src/server/agent/provider-registry.ts

@@ -8,9 +8,7 @@ import type { AgentProviderRuntimeSettingsMap } from "./provider-launch-config.j
 import type { Logger } from "pino";
 
 import { ClaudeAgentClient } from "./providers/claude-agent.js";
-import { ClaudeACPAgentClient } from "./providers/claude-acp-agent.js";
 import { CodexAppServerAgentClient } from "./providers/codex-app-server-agent.js";
-import { CopilotACPAgentClient } from "./providers/copilot-acp-agent.js";
 import { OpenCodeAgentClient, OpenCodeServerManager } from "./providers/opencode-agent.js";
 
 import {
@@ -43,17 +41,7 @@ const PROVIDER_CLIENT_FACTORIES: Record<string, ProviderClientFactory> = {
       logger,
       runtimeSettings: runtimeSettings?.claude,
     }),
-  "claude-acp": (logger, runtimeSettings) =>
-    new ClaudeACPAgentClient({
-      logger,
-      runtimeSettings: runtimeSettings?.["claude-acp"],
-    }),
   codex: (logger, runtimeSettings) => new CodexAppServerAgentClient(logger, runtimeSettings?.codex),
-  copilot: (logger, runtimeSettings) =>
-    new CopilotACPAgentClient({
-      logger,
-      runtimeSettings: runtimeSettings?.copilot,
-    }),
   opencode: (logger, runtimeSettings) =>
     new OpenCodeAgentClient(logger, runtimeSettings?.opencode),
 };