feat(enhancement): add antigravity-cli provider

packages/app/src/components/icons/antigravity-icon.tsx

@@ -0,0 +1,15 @@
+import Svg, { Path, Circle } from "react-native-svg";
+
+interface AntigravityIconProps {
+  size?: number;
+  color?: string;
+}
+
+export function AntigravityIcon({ size = 16, color = "currentColor" }: AntigravityIconProps) {
+  return (
+    <Svg width={size} height={size} viewBox="0 0 24 24" fill={color}>
+      <Path d="M12 2L4 20h16L12 2zm0 3.5L18.5 18h-13L12 5.5z" fillRule="evenodd" />
+      <Circle cx="12" cy="14" r="1.5" />
+    </Svg>
+  );
+}

packages/app/src/components/provider-icon-name.ts

@@ -1,13 +1,21 @@
 import { ACP_PROVIDER_CATALOG } from "@/data/acp-provider-catalog";
 
-export type BuiltinProviderIconName = "claude" | "codex" | "copilot" | "kiro" | "opencode" | "pi";
+export type BuiltinProviderIconName =
+  | "antigravity"
+  | "claude"
+  | "codex"
+  | "copilot"
+  | "kiro"
+  | "opencode"
+  | "pi";
 
 export type ProviderIconName =
   | { kind: "builtin"; id: BuiltinProviderIconName }
   | { kind: "catalog"; id: string }
   | { kind: "bot" };
 
 const BUILTIN_PROVIDER_IDS: ReadonlySet<BuiltinProviderIconName> = new Set([
+  "antigravity",
   "claude",
   "codex",
   "copilot",

packages/app/src/components/provider-icons.ts

@@ -1,6 +1,7 @@
 import { Bot, PackagePlus } from "lucide-react-native";
 import { createElement, type ComponentType } from "react";
 import { SvgXml } from "react-native-svg";
+import { AntigravityIcon } from "@/components/icons/antigravity-icon";
 import { ClaudeIcon } from "@/components/icons/claude-icon";
 import { CodexIcon } from "@/components/icons/codex-icon";
 import { CopilotIcon } from "@/components/icons/copilot-icon";
@@ -20,6 +21,7 @@ export interface ProviderIconProps {
 export type ProviderIconComponent = ComponentType<ProviderIconProps>;
 
 const BUILTIN_PROVIDER_ICONS: Record<BuiltinProviderIconName, ProviderIconComponent> = {
+  antigravity: AntigravityIcon as unknown as ProviderIconComponent,
   claude: ClaudeIcon as unknown as ProviderIconComponent,
   codex: CodexIcon as unknown as ProviderIconComponent,
   copilot: CopilotIcon as unknown as ProviderIconComponent,

packages/protocol/src/provider-manifest.ts

@@ -161,7 +161,32 @@ const MOCK_SLOW_MODES: AgentProviderModeDefinition[] = [
   },
 ];
 
+const ANTIGRAVITY_MODES: AgentProviderModeDefinition[] = [
+  {
+    id: "default",
+    label: "Default",
+    description: "Ask for permission before executing tools",
+    icon: "ShieldAlert",
+    colorTier: "moderate",
+  },
+  {
+    id: "bypass",
+    label: "Full Access",
+    description: "Auto-approve all tool calls (skips permission prompts)",
+    icon: "ShieldOff",
+    colorTier: "dangerous",
+    isUnattended: true,
+  },
+];
+
 export const AGENT_PROVIDER_DEFINITIONS: AgentProviderDefinition[] = [
+  {
+    id: "antigravity",
+    label: "Antigravity",
+    description: "Google's Antigravity CLI agent with multi-step reasoning and multi-file editing",
+    defaultModeId: "default",
+    modes: ANTIGRAVITY_MODES,
+  },
   {
     id: "claude",
     label: "Claude",

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

@@ -29,6 +29,7 @@ import type {
   ProviderProfileModel,
   ProviderRuntimeSettings,
 } from "./provider-launch-config.js";
+import { AntigravityAgentClient } from "./providers/antigravity-agent.js";
 import { ClaudeAgentClient } from "./providers/claude/agent.js";
 import { CodexAppServerAgentClient } from "./providers/codex-app-server-agent.js";
 import { CopilotACPAgentClient } from "./providers/copilot-acp-agent.js";
@@ -107,6 +108,10 @@ interface ResolvedProvider {
 }
 
 const PROVIDER_CLIENT_FACTORIES: Record<string, ProviderClientFactory> = {
+  antigravity: (logger) =>
+    new AntigravityAgentClient({
+      logger,
+    }),
   claude: (logger, runtimeSettings) =>
     new ClaudeAgentClient({
       logger,