diff --git a/packages/browser-ext/src/lib/browser-message-actions.tsx b/packages/browser-ext/src/lib/browser-message-actions.tsx
index accc9fa..b5a7165 100644
--- a/packages/browser-ext/src/lib/browser-message-actions.tsx
+++ b/packages/browser-ext/src/lib/browser-message-actions.tsx
@@ -21,10 +21,16 @@ import { shareConversation } from "../services/share-conversation";
 import { isByokConfigured } from "./ai-provider";
 
 export function BrowserMessageActions({
+  message,
   onRegenerate,
   onCopy,
 }: MessageActionsSlotProps) {
   const { messages, sendMessage } = useChatContext();
+
+  const textContent = message.parts
+    .filter((p) => p.type === "text")
+    .map((p) => (p.type === "text" ? p.text : ""))
+    .join("\n");
   const { user } = useAuth();
   const { settings } = useConfigContext();
   const [isSharing, setIsSharing] = useState(false);
@@ -57,8 +63,8 @@ export function BrowserMessageActions({
 
   return (
     <Actions className="mt-2">
-      {onCopy && (
-        <Action onClick={onCopy} label="Copy">
+      {onCopy && textContent && (
+        <Action onClick={() => onCopy(textContent)} label="Copy">
           <CopyIcon className="size-3" />
         </Action>
       )}
diff --git a/packages/browser-runtime/src/lib/vm/skill-api.ts b/packages/browser-runtime/src/lib/vm/skill-api.ts
index 961929b..67d8bc2 100644
--- a/packages/browser-runtime/src/lib/vm/skill-api.ts
+++ b/packages/browser-runtime/src/lib/vm/skill-api.ts
@@ -4,14 +4,10 @@
  * between QuickJS VM and the host environment
  */
 
+import type { FileStats } from "./types";
 import { zenfs } from "./zenfs-manager";
 
-export interface FileStats {
-  isFile: boolean;
-  isDirectory: boolean;
-  size: number;
-  mtime: Date;
-}
+export type { FileStats };
 
 export interface ToolDefinition {
   name: string;
diff --git a/packages/browser-runtime/src/lib/vm/types.ts b/packages/browser-runtime/src/lib/vm/types.ts
new file mode 100644
index 0000000..4069d28
--- /dev/null
+++ b/packages/browser-runtime/src/lib/vm/types.ts
@@ -0,0 +1,6 @@
+export interface FileStats {
+  isFile: boolean;
+  isDirectory: boolean;
+  size: number;
+  mtime: Date;
+}
diff --git a/packages/browser-runtime/src/lib/vm/zenfs-manager.ts b/packages/browser-runtime/src/lib/vm/zenfs-manager.ts
index 0948349..25db532 100644
--- a/packages/browser-runtime/src/lib/vm/zenfs-manager.ts
+++ b/packages/browser-runtime/src/lib/vm/zenfs-manager.ts
@@ -5,7 +5,7 @@
 
 import { configure, fs } from "@zenfs/core";
 import { IndexedDB } from "@zenfs/dom";
-import type { FileStats } from "./skill-api";
+import type { FileStats } from "./types";
 
 type FsPromises = {
   mkdir: (...args: any[]) => Promise<any>;
diff --git a/packages/browser-runtime/src/runtime/browser-automation-host.ts b/packages/browser-runtime/src/runtime/browser-automation-host.ts
index 033de3e..b71f952 100644
--- a/packages/browser-runtime/src/runtime/browser-automation-host.ts
+++ b/packages/browser-runtime/src/runtime/browser-automation-host.ts
@@ -1,30 +1,17 @@
 import type { ContextProvider } from "@aipexstudio/aipex-core";
-import type { RuntimeAddon } from "./runtime-addon.js";
-import type { RuntimeBroadcastMessage } from "./types.js";
+import type {
+  AutomationTarget,
+  RuntimeAddon,
+  RuntimeBroadcastMessage,
+  SnapshotCaptureOptions,
+  SnapshotResult,
+} from "./types.js";
 
-export interface AutomationTarget {
-  tabId: number;
-  frameId?: number;
-  windowId?: number;
-}
-
-export interface SnapshotCaptureOptions {
-  includeDom?: boolean;
-  includeScreenshot?: boolean;
-  includeContext?: boolean;
-  reason?: string;
-  tabId?: number;
-}
-
-export interface SnapshotResult {
-  id: string;
-  capturedAt: number;
-  screenshot?: string;
-  dom?: string;
-  title?: string;
-  url?: string;
-  metadata?: Record<string, unknown>;
-}
+export type {
+  AutomationTarget,
+  SnapshotCaptureOptions,
+  SnapshotResult,
+} from "./types.js";
 
 export interface CaptureSessionOptions {
   target: AutomationTarget;
diff --git a/packages/browser-runtime/src/runtime/runtime-addon.ts b/packages/browser-runtime/src/runtime/runtime-addon.ts
index 08989b1..a7fad55 100644
--- a/packages/browser-runtime/src/runtime/runtime-addon.ts
+++ b/packages/browser-runtime/src/runtime/runtime-addon.ts
@@ -1,22 +1,4 @@
-import type {
-  AutomationTarget,
-  SnapshotCaptureOptions,
-  SnapshotResult,
-} from "./browser-automation-host.js";
-import type { RuntimeBroadcastMessage } from "./types.js";
-
-export interface SnapshotHookContext {
-  target: AutomationTarget;
-  options?: SnapshotCaptureOptions;
-}
-
-export interface RuntimeAddon {
-  id: string;
-  initialize?(): Promise<void> | void;
-  onMessage?(message: RuntimeBroadcastMessage): Promise<void> | void;
-  onBeforeSnapshot?(ctx: SnapshotHookContext): Promise<void> | void;
-  onAfterSnapshot?(
-    result: SnapshotResult,
-    ctx: SnapshotHookContext,
-  ): Promise<void> | void;
-}
+export type {
+  RuntimeAddon,
+  SnapshotHookContext,
+} from "./types.js";
diff --git a/packages/browser-runtime/src/runtime/types.ts b/packages/browser-runtime/src/runtime/types.ts
index dfd8fbb..c037e4c 100644
--- a/packages/browser-runtime/src/runtime/types.ts
+++ b/packages/browser-runtime/src/runtime/types.ts
@@ -8,3 +8,43 @@ export interface RuntimeBroadcastMessage<TPayload = unknown> {
 export interface RuntimeAddonCleanup {
   dispose(): Promise<void> | void;
 }
+
+export interface AutomationTarget {
+  tabId: number;
+  frameId?: number;
+  windowId?: number;
+}
+
+export interface SnapshotCaptureOptions {
+  includeDom?: boolean;
+  includeScreenshot?: boolean;
+  includeContext?: boolean;
+  reason?: string;
+  tabId?: number;
+}
+
+export interface SnapshotResult {
+  id: string;
+  capturedAt: number;
+  screenshot?: string;
+  dom?: string;
+  title?: string;
+  url?: string;
+  metadata?: Record<string, unknown>;
+}
+
+export interface SnapshotHookContext {
+  target: AutomationTarget;
+  options?: SnapshotCaptureOptions;
+}
+
+export interface RuntimeAddon {
+  id: string;
+  initialize?(): Promise<void> | void;
+  onMessage?(message: RuntimeBroadcastMessage): Promise<void> | void;
+  onBeforeSnapshot?(ctx: SnapshotHookContext): Promise<void> | void;
+  onAfterSnapshot?(
+    result: SnapshotResult,
+    ctx: SnapshotHookContext,
+  ): Promise<void> | void;
+}
diff --git a/packages/browser-runtime/src/tools/index.ts b/packages/browser-runtime/src/tools/index.ts
index a541de0..3901998 100644
--- a/packages/browser-runtime/src/tools/index.ts
+++ b/packages/browser-runtime/src/tools/index.ts
@@ -128,47 +128,8 @@ export function registerDefaultBrowserTools<T extends ToolRegistryLike>(
   return registry;
 }
 
-/**
- * Get the currently active tab
- * @throws Error if no active tab is found
- */
-export async function getActiveTab(): Promise<chrome.tabs.Tab> {
-  const [tab] = await chrome.tabs.query({
-    active: true,
-    currentWindow: true,
-  });
-
-  if (!tab?.id) {
-    throw new Error("No active tab found");
-  }
-
-  return tab;
-}
-
-/**
- * Execute a script in a specific tab
- */
-export async function executeScriptInTab<T, Args extends any[]>(
-  tabId: number,
-  func: (...args: Args) => T,
-  args: Args,
-): Promise<T> {
-  const results = await chrome.scripting.executeScript({
-    target: { tabId },
-    func,
-    args,
-  });
-
-  return results[0]?.result as T;
-}
-
-/**
- * Execute a script in the active tab
- */
-export async function executeScriptInActiveTab<T, Args extends any[]>(
-  func: (...args: Args) => T,
-  args: Args,
-): Promise<T> {
-  const tab = await getActiveTab();
-  return await executeScriptInTab(tab.id!, func, args);
-}
+export {
+  executeScriptInActiveTab,
+  executeScriptInTab,
+  getActiveTab,
+} from "./tab-utils";
diff --git a/packages/browser-runtime/src/tools/page.ts b/packages/browser-runtime/src/tools/page.ts
index f8389ce..7a9f49a 100644
--- a/packages/browser-runtime/src/tools/page.ts
+++ b/packages/browser-runtime/src/tools/page.ts
@@ -1,6 +1,6 @@
 import { tool } from "@aipexstudio/aipex-core";
 import { z } from "zod";
-import { getActiveTab } from "./index";
+import { getActiveTab } from "./tab-utils";
 
 /**
  * Get page metadata including title, description, keywords, etc.
diff --git a/packages/browser-runtime/src/tools/screenshot.ts b/packages/browser-runtime/src/tools/screenshot.ts
index a6d54e1..b009b93 100644
--- a/packages/browser-runtime/src/tools/screenshot.ts
+++ b/packages/browser-runtime/src/tools/screenshot.ts
@@ -3,11 +3,11 @@ import { z } from "zod";
 import { cacheScreenshotMetadata } from "../automation/computer";
 import { RuntimeScreenshotStorage } from "../lib/screenshot-storage";
 import { getAutomationMode } from "../runtime/automation-mode";
-import { getActiveTab } from "./index";
 import {
   captureVisibleTabWithElementCrop,
   MAX_PADDING,
 } from "./screenshot-helpers.js";
+import { getActiveTab } from "./tab-utils";
 
 // Re-export the shared helper types/function so existing consumers aren't broken
 export type {
diff --git a/packages/browser-runtime/src/tools/snapshot.ts b/packages/browser-runtime/src/tools/snapshot.ts
index fc67b0b..fdc3494 100644
--- a/packages/browser-runtime/src/tools/snapshot.ts
+++ b/packages/browser-runtime/src/tools/snapshot.ts
@@ -1,7 +1,7 @@
 import { tool } from "@aipexstudio/aipex-core";
 import { z } from "zod";
 import * as snapshotProvider from "../automation/snapshot-provider";
-import { getActiveTab } from "./index";
+import { getActiveTab } from "./tab-utils";
 
 export const takeSnapshotTool = tool({
   name: "take_snapshot",
diff --git a/packages/browser-runtime/src/tools/tab-utils.ts b/packages/browser-runtime/src/tools/tab-utils.ts
new file mode 100644
index 0000000..5679dcd
--- /dev/null
+++ b/packages/browser-runtime/src/tools/tab-utils.ts
@@ -0,0 +1,44 @@
+/**
+ * Get the currently active tab
+ * @throws Error if no active tab is found
+ */
+export async function getActiveTab(): Promise<chrome.tabs.Tab> {
+  const [tab] = await chrome.tabs.query({
+    active: true,
+    currentWindow: true,
+  });
+
+  if (!tab?.id) {
+    throw new Error("No active tab found");
+  }
+
+  return tab;
+}
+
+/**
+ * Execute a script in a specific tab
+ */
+export async function executeScriptInTab<T, Args extends any[]>(
+  tabId: number,
+  func: (...args: Args) => T,
+  args: Args,
+): Promise<T> {
+  const results = await chrome.scripting.executeScript({
+    target: { tabId },
+    func,
+    args,
+  });
+
+  return results[0]?.result as T;
+}
+
+/**
+ * Execute a script in the active tab
+ */
+export async function executeScriptInActiveTab<T, Args extends any[]>(
+  func: (...args: Args) => T,
+  args: Args,
+): Promise<T> {
+  const tab = await getActiveTab();
+  return await executeScriptInTab(tab.id!, func, args);
+}
diff --git a/packages/browser-runtime/src/tools/tab.ts b/packages/browser-runtime/src/tools/tab.ts
index 42db061..8431b98 100644
--- a/packages/browser-runtime/src/tools/tab.ts
+++ b/packages/browser-runtime/src/tools/tab.ts
@@ -1,7 +1,7 @@
 import { tool } from "@aipexstudio/aipex-core";
 import { z } from "zod";
 import { getAutomationMode } from "../runtime/automation-mode";
-import { getActiveTab } from "./index";
+import { getActiveTab } from "./tab-utils";
 
 /**
  * Get all open tabs across all windows
diff --git a/packages/core/src/config/ai-providers.ts b/packages/core/src/config/ai-providers.ts
index 3a4172a..b064948 100644
--- a/packages/core/src/config/ai-providers.ts
+++ b/packages/core/src/config/ai-providers.ts
@@ -1,4 +1,4 @@
-import type { ProviderType } from "./settings.js";
+import type { ProviderType } from "./types.js";
 
 export interface AIProviderConfig {
   name: string;
diff --git a/packages/core/src/config/settings.ts b/packages/core/src/config/settings.ts
index 83cfa52..7790ad7 100644
--- a/packages/core/src/config/settings.ts
+++ b/packages/core/src/config/settings.ts
@@ -1,6 +1,7 @@
 import type { AIProviderKey } from "./ai-providers.js";
+import type { ProviderType } from "./types.js";
 
-export type ProviderType = "google" | "openai" | "claude";
+export type { ProviderType };
 
 export interface CustomModelConfig {
   id: string;
diff --git a/packages/core/src/config/types.ts b/packages/core/src/config/types.ts
new file mode 100644
index 0000000..f2158de
--- /dev/null
+++ b/packages/core/src/config/types.ts
@@ -0,0 +1 @@
+export type ProviderType = "google" | "openai" | "claude";
diff --git a/packages/core/src/types.ts b/packages/core/src/types.ts
index 8bde618..525a9f9 100644
--- a/packages/core/src/types.ts
+++ b/packages/core/src/types.ts
@@ -4,10 +4,7 @@ import type {
   Agent as OpenAIAgent,
 } from "@openai/agents";
 import type { AiSdkModel } from "@openai/agents-extensions";
-import type { AIPex } from "./agent/aipex.js";
 import type { Context, ContextManager } from "./context/index.js";
-import type { ConversationManager } from "./conversation/manager.js";
-import type { Session } from "./conversation/session.js";
 import type { AgentError } from "./utils/errors.js";
 
 // Re-export types from @openai/agents for convenient access
@@ -73,7 +70,7 @@ export interface AIPexOptions<
    * Fully custom ConversationManager instance.
    * When provided, storage and compression options are ignored.
    */
-  conversationManager?: ConversationManager;
+  conversationManager?: import("./conversation/manager.js").ConversationManager;
 
   /**
    * Context manager for providing additional context to the agent.
@@ -161,7 +158,7 @@ export interface MetricsPayload {
 }
 
 export interface AgentPluginContext {
-  agent: AIPex;
+  agent: import("./agent/aipex.js").AIPex;
 }
 
 export interface AgentPluginHooks {
@@ -240,8 +237,8 @@ export interface SessionTree {
 }
 
 export interface SessionStorageAdapter {
-  save(session: Session): Promise<void>;
-  load(id: string): Promise<Session | null>;
+  save(session: import("./conversation/session.js").Session): Promise<void>;
+  load(id: string): Promise<import("./conversation/session.js").Session | null>;
   delete(id: string): Promise<void>;
   listAll(): Promise<SessionSummary[]>;
   getSessionTree(rootId?: string): Promise<SessionTree[]>;