diff --git a/frontends/stapp.py b/frontends/stapp.py
index 83a6d33c..7833b799 100644
--- a/frontends/stapp.py
+++ b/frontends/stapp.py
@@ -157,6 +157,16 @@ def render_segments(segments, suffix=''):
             # restores a multi-turn body).
             st.markdown(_SUMMARY_TAG_RE.sub('', seg['content']) + suffix)
 
+def _now_ts():
+    return time.strftime("%Y-%m-%d %H:%M:%S")
+
+def _chat_msg(role, content, ts=None):
+    return {"role": role, "content": content, "time": ts or _now_ts()}
+
+def _render_msg_time(msg):
+    ts = msg.get("time")
+    if ts: st.caption(ts)
+
 def agent_backend_stream(prompt=None):
     """Drain main task display_queue.
     - prompt given:  start a fresh task; new dq is kept in session_state.
@@ -199,7 +209,10 @@ def agent_backend_stream(prompt=None):
 
 def render_main_stream(prompt=None):
     """Render the assistant bubble for the main task (new or resumed). Saves final to messages."""
+    reply_ts = st.session_state.get('reply_ts') or _now_ts()
+    st.session_state.reply_ts = reply_ts
     with st.chat_message("assistant"):
+        st.caption(reply_ts)
         frozen = 0; live = st.empty(); response = ''
         CURSOR = ' ▌'
         for response in agent_backend_stream(prompt):
@@ -214,8 +227,9 @@ def render_main_stream(prompt=None):
             with live.container(): render_segments([segs[i]])
             if i < len(segs) - 1: live = st.empty()
     if response:
-        st.session_state.messages.append({"role": "assistant", "content": response})
+        st.session_state.messages.append(_chat_msg("assistant", response, reply_ts))
         st.session_state.last_reply_time = int(time.time())
+        st.session_state.reply_ts = ""
 
 if "messages" not in st.session_state: st.session_state.messages = []
 for msg in st.session_state.messages:
@@ -223,6 +237,7 @@ def render_main_stream(prompt=None):
         # 用 slot=st.empty() + with slot.container(): ... 的外壳，DOM 路径和流式渲染完全一致，跨 rerun 对齐
         slot = st.empty()
         with slot.container():
+            _render_msg_time(msg)
             if msg["role"] == "assistant": render_segments(fold_turns(msg["content"]))
             else: st.markdown(msg["content"])
 
@@ -255,10 +270,22 @@ def render_main_stream(prompt=None):
     "e.key==='Enter'&&!e.shiftKey&&(e.isComposing||c||e.keyCode===229)&&"
     "(e.stopImmediatePropagation(),e.preventDefault())},!0))})}"
     "f();new MutationObserver(f).observe(d.body,{childList:1,subtree:1})}()")
-_embed_html(f'<script>{_js_scroll_fix};{_js_ime_fix}</script>', height=0)
+_js_homeend_fix = (
+    "!function(){if(window.parent.__homeEndFix)return;window.parent.__homeEndFix=1;"
+    "var d=window.parent.document;"
+    "function f(){d.querySelectorAll('textarea[data-testid=stChatInputTextArea]')"
+    ".forEach(t=>{if(t.__homeEndFix)return;t.__homeEndFix=1;"
+    "t.addEventListener('keydown',e=>{"
+    "if(e.key==='Home'||e.key==='End'){"
+    "e.preventDefault();e.stopPropagation();"
+    "t.selectionStart=t.selectionEnd=(e.key==='Home')?0:t.value.length;"
+    "}},!0)})}"
+    "f();new MutationObserver(f).observe(d.body,{childList:1,subtree:1})}()"
+)
+_embed_html(f'<script>{_js_scroll_fix};{_js_ime_fix};{_js_homeend_fix}</script>', height=0)
 
 if prompt := st.chat_input("any task?"):
-    ts = time.strftime("%Y-%m-%d %H:%M:%S")
+    ts = _now_ts()
     cmd = (prompt or "").strip()
     def _reset_and_rerun():
         st.session_state.streaming = False
@@ -270,7 +297,7 @@ def _reset_and_rerun():
         st.session_state.last_reply_time = int(time.time())
         st.rerun()
     if cmd == "/new":
-        st.session_state.messages = [{"role": "assistant", "content": reset_conversation(agent), "time": ts}]
+        st.session_state.messages = [_chat_msg("assistant", reset_conversation(agent), ts)]
         _reset_and_rerun()
     if cmd.startswith("/continue"):
         m = re.match(r'/continue\s+(\d+)\s*$', cmd.strip())
@@ -280,18 +307,18 @@ def _reset_and_rerun():
         target = sessions[idx][0] if 0 <= idx < len(sessions) else None
         result = handle_frontend_command(agent, cmd)
         history = extract_ui_messages(target) if target and result.startswith('✅') else None
-        tail = [{"role": "assistant", "content": result, "time": ts}]
+        tail = [_chat_msg("assistant", result, ts)]
         if history:
             st.session_state.messages = history + tail
         else:
             st.session_state.messages = list(st.session_state.messages) + \
-                [{"role": "user", "content": cmd, "time": ts}] + tail
+                [_chat_msg("user", cmd, ts)] + tail
         _reset_and_rerun()
     if cmd.startswith("/btw"):
         answer = btw_handle_frontend(agent, cmd)  # sync; bypasses put_task → main agent.run() untouched
         st.session_state.messages = list(st.session_state.messages) + [
-            {"role": "user", "content": prompt, "time": ts},
-            {"role": "assistant", "content": answer, "time": ts},
+            _chat_msg("user", prompt, ts),
+            _chat_msg("assistant", answer, ts),
         ]
         st.rerun()  # preserve display_queue/partial_response so resume path drains the running main task
     if cmd.startswith("/export"):
@@ -322,15 +349,17 @@ def _reset_and_rerun():
                 except Exception as e:
                     result = f"❌ 导出失败: {e}"
         st.session_state.messages = list(st.session_state.messages) + [
-            {"role": "user", "content": cmd, "time": ts},
-            {"role": "assistant", "content": result, "time": ts},
+            _chat_msg("user", cmd, ts),
+            _chat_msg("assistant", result, ts),
         ]
         _reset_and_rerun()
     # Regular prompt: any in-flight task will be aborted by the finally block in
     # agent_backend_stream when StopException interrupts the prior generator.
-    st.session_state.messages.append({"role": "user", "content": prompt})
+    st.session_state.messages.append(_chat_msg("user", prompt, ts))
     if hasattr(agent, '_pet_req') and not prompt.startswith('/'): agent._pet_req('state=walk')
-    with st.chat_message("user"): st.markdown(prompt)
+    with st.chat_message("user"):
+        st.caption(ts)
+        st.markdown(prompt)
     render_main_stream(prompt)
 elif st.session_state.get('display_queue') is not None:
     # No new prompt but a task is mid-flight (typically a /btw rerun) — resume drain.
diff --git a/frontends/tuiapp_v2.py b/frontends/tuiapp_v2.py
index 935728e6..43e78a5b 100644
--- a/frontends/tuiapp_v2.py
+++ b/frontends/tuiapp_v2.py
@@ -229,14 +229,9 @@ class InputArea(TextArea):
         Binding("alt+enter",   "newline", "Newline", show=False),
         Binding("ctrl+enter",  "newline", "Newline", show=False),
         Binding("shift+enter", "newline", "Newline", show=False),
-        # 拆掉父类 ctrl+v：父类会走 action_paste 从 app.clipboard 再插一次，
-        # 和终端 bracketed paste 触发的 _on_paste 双重插入 → 单行粘贴会重复
-        Binding("ctrl+v",      "noop",    "Noop",    show=False),
+        Binding("ctrl+v",      "paste",   "Paste",   show=False),
     ]
 
-    def action_noop(self) -> None:
-        pass
-
     class Submitted(Message):
         def __init__(self, input_area: "InputArea", value: str) -> None:
             super().__init__()
@@ -247,6 +242,7 @@ def __init__(self, *args, **kwargs) -> None:
         super().__init__(*args, **kwargs)
         self._pastes: dict[int, str] = {}
         self._paste_counter = 0
+        self._last_paste: tuple[str, str, float] = ("", "", 0.0)
 
     def expand_placeholders(self, text: str) -> str:
         def repl(m):
@@ -259,15 +255,18 @@ def reset(self) -> None:
         self._pastes.clear()
         self._paste_counter = 0
 
-    def action_newline(self) -> None:
-        result = self._replace_via_keyboard("\n", *self.selection)
-        if result:
-            self.move_cursor(result.end_location)
+    def _insert_paste_text(self, text: str, source: str) -> bool:
+        text = (text or "").replace("\r\n", "\n").replace("\r", "\n")
+        if not text:
+            return False
+
+        normalized = text
+        last_source, last_text, last_at = self._last_paste
+        now = time.monotonic()
+        if normalized == last_text and source != last_source and now - last_at < 0.25:
+            self._last_paste = (source, normalized, now)
+            return True
 
-    async def _on_paste(self, event: events.Paste) -> None:
-        if self.read_only:
-            return
-        text = event.text.replace("\r\n", "\n").replace("\r", "\n")
         line_count = len(text.splitlines()) or 1
         if line_count > 2:
             self._paste_counter += 1
@@ -278,7 +277,24 @@ async def _on_paste(self, event: events.Paste) -> None:
         if result:
             self.move_cursor(result.end_location)
             self.focus()
-        event.stop(); event.prevent_default()
+        self._last_paste = (source, normalized, now)
+        return result is not None
+
+    def action_newline(self) -> None:
+        result = self._replace_via_keyboard("\n", *self.selection)
+        if result:
+            self.move_cursor(result.end_location)
+
+    def action_paste(self) -> None:
+        if self.read_only:
+            return
+        self._insert_paste_text(self.app.clipboard, "key")
+
+    async def _on_paste(self, event: events.Paste) -> None:
+        if self.read_only:
+            return
+        if self._insert_paste_text(event.text, "event"):
+            event.stop(); event.prevent_default()
 
     async def _on_key(self, event: events.Key) -> None:
         try:
diff --git a/tests/test_tuiapp_v2_input.py b/tests/test_tuiapp_v2_input.py
new file mode 100644
index 00000000..918563c0
--- /dev/null
+++ b/tests/test_tuiapp_v2_input.py
@@ -0,0 +1,106 @@
+import asyncio
+import contextlib
+import io
+import importlib
+import sys
+import unittest
+from pathlib import Path
+
+try:
+    from textual import events
+    from textual.app import App, ComposeResult
+except ModuleNotFoundError:  # pragma: no cover - optional UI dependency
+    events = None
+    App = object
+    ComposeResult = object
+
+
+@unittest.skipIf(events is None, "textual is not installed")
+class TuiAppV2InputPasteTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        repo_root = Path(__file__).resolve().parents[1]
+        frontends = repo_root / "frontends"
+        for path in (str(repo_root), str(frontends)):
+            if path not in sys.path:
+                sys.path.insert(0, path)
+
+        saved_modules = {}
+        for name in ("agentmain", "chatapp_common", "continue_cmd", "llmcore"):
+            saved_modules[name] = sys.modules.pop(name, None)
+        try:
+            with contextlib.redirect_stdout(io.StringIO()), contextlib.redirect_stderr(io.StringIO()):
+                module = importlib.import_module("frontends.tuiapp_v2")
+        finally:
+            for name, module_stub in saved_modules.items():
+                if module_stub is not None:
+                    sys.modules[name] = module_stub
+        input_cls = module.InputArea
+
+        class InputHarness(App[None]):
+            def compose(self) -> ComposeResult:
+                yield input_cls(id="input")
+
+            def on_mount(self) -> None:
+                self.query_one(input_cls).focus()
+
+        cls.InputArea = input_cls
+        cls.InputHarness = InputHarness
+
+    def run_async(self, coro):
+        return asyncio.run(coro)
+
+    def test_ctrl_v_pastes_from_textual_clipboard(self):
+        async def run():
+            async with self.InputHarness().run_test() as pilot:
+                input_area = pilot.app.query_one(self.InputArea)
+                pilot.app.copy_to_clipboard("hello from clipboard")
+
+                await pilot.press("ctrl+v")
+
+                self.assertEqual(input_area.text, "hello from clipboard")
+
+        self.run_async(run())
+
+    def test_bracketed_paste_normalizes_windows_newlines(self):
+        async def run():
+            async with self.InputHarness().run_test() as pilot:
+                input_area = pilot.app.query_one(self.InputArea)
+
+                pilot.app.post_message(events.Paste("first\r\nsecond"))
+                await pilot.pause()
+
+                self.assertEqual(input_area.text, "first\nsecond")
+
+        self.run_async(run())
+
+    def test_long_multiline_paste_uses_placeholder_but_submits_full_text(self):
+        async def run():
+            async with self.InputHarness().run_test() as pilot:
+                input_area = pilot.app.query_one(self.InputArea)
+
+                pilot.app.post_message(events.Paste("one\ntwo\nthree"))
+                await pilot.pause()
+
+                self.assertEqual(input_area.text, "[Pasted text #1 +3 lines]")
+                self.assertEqual(input_area.expand_placeholders(input_area.text), "one\ntwo\nthree")
+
+        self.run_async(run())
+
+    def test_ctrl_v_and_bracketed_paste_do_not_duplicate_same_payload(self):
+        async def run():
+            async with self.InputHarness().run_test() as pilot:
+                input_area = pilot.app.query_one(self.InputArea)
+                pilot.app.copy_to_clipboard("same")
+
+                await pilot.press("ctrl+v")
+                pilot.app.post_message(events.Paste("same"))
+                await pilot.pause()
+
+                self.assertEqual(input_area.text, "same")
+
+        self.run_async(run())
+
+
+if __name__ == "__main__":
+    unittest.main()