diff --git a/custom_components/openclaw/__init__.py b/custom_components/openclaw/__init__.py
index 99e5e46..d1e2db7 100644
--- a/custom_components/openclaw/__init__.py
+++ b/custom_components/openclaw/__init__.py
@@ -47,9 +47,9 @@ from .const import (
     ATTR_ACCOUNT_ID,
     ATTR_SOURCE,
     ATTR_TIMESTAMP,
+    ATTR_HA_USER_ID,
     CONF_ADDON_CONFIG_PATH,
     CONF_AGENT_ID,
-    CONF_VOICE_AGENT_ID,
     CONF_GATEWAY_HOST,
     CONF_GATEWAY_PORT,
     CONF_GATEWAY_TOKEN,
@@ -67,7 +67,6 @@ from .const import (
     CONF_THINKING_TIMEOUT,
     CONTEXT_STRATEGY_TRUNCATE,
     DEFAULT_AGENT_ID,
-    DEFAULT_VOICE_AGENT_ID,
     DEFAULT_CONTEXT_MAX_CHARS,
     DEFAULT_CONTEXT_STRATEGY,
     DEFAULT_ENABLE_TOOL_CALLS,
@@ -90,6 +89,13 @@ from .const import (
 from .coordinator import OpenClawCoordinator
 from .exposure import apply_context_policy, build_exposed_entities_context
 from .helpers import extract_text_recursive
+from .routing import (
+    build_scoped_session_id,
+    normalize_ha_user_id,
+    normalize_optional_text,
+    resolve_agent_id,
+    resolve_model_override,
+)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -107,7 +113,7 @@ _CARD_PATH = Path(__file__).parent / "www" / _CARD_FILENAME
 # URL at which the card JS is served (registered via register_static_path)
 _CARD_STATIC_URL = f"/openclaw/{_CARD_FILENAME}"
 # Versioned URL used for Lovelace resource registration to avoid stale browser cache
-_CARD_URL = f"{_CARD_STATIC_URL}?v=0.1.62"
+_CARD_URL = f"{_CARD_STATIC_URL}?v=0.1.63"
 
 OpenClawConfigEntry = ConfigEntry
 
@@ -125,6 +131,7 @@ SEND_MESSAGE_SCHEMA = vol.Schema(
 CLEAR_HISTORY_SCHEMA = vol.Schema(
     {
         vol.Optional(ATTR_SESSION_ID): cv.string,
+        vol.Optional(ATTR_AGENT_ID): cv.string,
     }
 )
 
@@ -399,18 +406,13 @@ async def _async_add_lovelace_resource(hass: HomeAssistant, url: str) -> bool:
 def _async_register_services(hass: HomeAssistant) -> None:
     """Register openclaw.send_message and openclaw.clear_history services."""
 
-    def _normalize_optional_text(value: Any) -> str | None:
-        if not isinstance(value, str):
-            return None
-        cleaned = value.strip()
-        return cleaned or None
-
     async def handle_send_message(call: ServiceCall) -> None:
         """Handle the openclaw.send_message service call."""
         message: str = call.data[ATTR_MESSAGE]
         source: str | None = call.data.get(ATTR_SOURCE)
-        session_id: str = call.data.get(ATTR_SESSION_ID) or "default"
-        call_agent_id = _normalize_optional_text(call.data.get(ATTR_AGENT_ID))
+        raw_session_id: str = call.data.get(ATTR_SESSION_ID) or "default"
+        ha_user_id = normalize_ha_user_id(call.context.user_id)
+        call_agent_id = normalize_optional_text(call.data.get(ATTR_AGENT_ID))
         extra_headers = _VOICE_REQUEST_HEADERS if source == "voice" else None
 
         entry_data = _get_first_entry_data(hass)
@@ -421,12 +423,12 @@ def _async_register_services(hass: HomeAssistant) -> None:
         client: OpenClawApiClient = entry_data["client"]
         coordinator: OpenClawCoordinator = entry_data["coordinator"]
         options = _get_entry_options(hass, entry_data)
-        voice_agent_id = _normalize_optional_text(
-            options.get(CONF_VOICE_AGENT_ID, DEFAULT_VOICE_AGENT_ID)
+        resolved_agent_id = resolve_agent_id(ha_user_id, call_agent_id)
+        scoped_session_id = build_scoped_session_id(
+            raw_session_id,
+            ha_user_id,
+            resolved_agent_id,
         )
-        resolved_agent_id = call_agent_id
-        if resolved_agent_id is None and source == "voice":
-            resolved_agent_id = voice_agent_id
 
         try:
             include_context = options.get(
@@ -447,13 +449,13 @@ def _async_register_services(hass: HomeAssistant) -> None:
             )
             system_prompt = apply_context_policy(raw_context, max_chars, strategy)
 
-            active_model = _normalize_optional_text(options.get("active_model"))
+            active_model = resolve_model_override(options.get("active_model"))
 
-            _append_chat_history(hass, session_id, "user", message)
+            _append_chat_history(hass, scoped_session_id, "user", message)
 
             response = await client.async_send_message(
                 message=message,
-                session_id=session_id,
+                session_id=scoped_session_id,
                 system_prompt=system_prompt,
                 agent_id=resolved_agent_id,
                 model=active_model,
@@ -469,7 +471,7 @@ def _async_register_services(hass: HomeAssistant) -> None:
                             + "\n".join(f"- {line}" for line in tool_results)
                             + "\nRespond to the user based on these results."
                         ),
-                        session_id=session_id,
+                        session_id=scoped_session_id,
                         system_prompt=system_prompt,
                         agent_id=resolved_agent_id,
                         model=active_model,
@@ -486,12 +488,15 @@ def _async_register_services(hass: HomeAssistant) -> None:
                     list(response.keys()),
                 )
 
-            _append_chat_history(hass, session_id, "assistant", assistant_message)
+            _append_chat_history(hass, scoped_session_id, "assistant", assistant_message)
             hass.bus.async_fire(
                 EVENT_MESSAGE_RECEIVED,
                 {
                     ATTR_MESSAGE: assistant_message,
-                    ATTR_SESSION_ID: session_id,
+                    ATTR_SESSION_ID: raw_session_id,
+                    ATTR_SESSION_KEY: scoped_session_id,
+                    ATTR_HA_USER_ID: ha_user_id,
+                    ATTR_AGENT_ID: resolved_agent_id,
                     ATTR_MODEL: model_used,
                     ATTR_TIMESTAMP: datetime.now(timezone.utc).isoformat(),
                 },
@@ -500,12 +505,20 @@ def _async_register_services(hass: HomeAssistant) -> None:
 
         except OpenClawApiError as err:
             _LOGGER.error("Failed to send message to OpenClaw: %s", err)
-            _append_chat_history(hass, session_id, "assistant", f"OpenClaw error: {err}")
+            _append_chat_history(
+                hass,
+                scoped_session_id,
+                "assistant",
+                f"OpenClaw error: {err}",
+            )
             hass.bus.async_fire(
                 EVENT_MESSAGE_RECEIVED,
                 {
                     ATTR_MESSAGE: f"OpenClaw error: {err}",
-                    ATTR_SESSION_ID: session_id,
+                    ATTR_SESSION_ID: raw_session_id,
+                    ATTR_SESSION_KEY: scoped_session_id,
+                    ATTR_HA_USER_ID: ha_user_id,
+                    ATTR_AGENT_ID: resolved_agent_id,
                     ATTR_MODEL: "unknown",
                     ATTR_TIMESTAMP: datetime.now(timezone.utc).isoformat(),
                 },
@@ -513,13 +526,32 @@ def _async_register_services(hass: HomeAssistant) -> None:
 
     async def handle_clear_history(call: ServiceCall) -> None:
         """Handle the openclaw.clear_history service call."""
-        session_id: str | None = call.data.get(ATTR_SESSION_ID)
-        _LOGGER.info("Clear history requested (session=%s)", session_id or "all")
+        raw_session_id: str | None = call.data.get(ATTR_SESSION_ID)
+        ha_user_id = normalize_ha_user_id(call.context.user_id)
+        requested_agent_id = normalize_optional_text(call.data.get(ATTR_AGENT_ID))
+        agent_id = resolve_agent_id(ha_user_id, requested_agent_id)
+        _LOGGER.info(
+            "Clear history requested (user=%s, agent=%s, session=%s)",
+            ha_user_id,
+            agent_id,
+            raw_session_id or "all",
+        )
         store = _get_chat_history_store(hass)
-        if session_id:
-            store.pop(session_id, None)
+        if raw_session_id:
+            scoped_session_id = build_scoped_session_id(
+                raw_session_id,
+                ha_user_id,
+                agent_id,
+            )
+            store.pop(scoped_session_id, None)
         else:
-            store.clear()
+            scoped_prefix = build_scoped_session_id("", ha_user_id, agent_id).rsplit(
+                "__session_",
+                1,
+            )[0] + "__session_"
+            for key in list(store):
+                if key.startswith(scoped_prefix):
+                    store.pop(key, None)
 
     async def handle_invoke_tool(call: ServiceCall) -> None:
         """Handle the openclaw.invoke_tool service call."""
@@ -793,9 +825,26 @@ def _async_register_websocket_api(hass: HomeAssistant) -> None:
         msg: dict[str, Any],
     ) -> None:
         """Return chat history for a session."""
-        session_id = msg.get("session_id") or "default"
-        history = _get_chat_history_store(hass).get(session_id, [])
-        connection.send_result(msg["id"], {"session_id": session_id, "messages": history})
+        raw_session_id = msg.get("session_id") or "default"
+        connection_user = getattr(connection, "user", None)
+        ha_user_id = normalize_ha_user_id(getattr(connection_user, "id", None))
+        agent_id = resolve_agent_id(ha_user_id)
+        scoped_session_id = build_scoped_session_id(
+            raw_session_id,
+            ha_user_id,
+            agent_id,
+        )
+        history = _get_chat_history_store(hass).get(scoped_session_id, [])
+        connection.send_result(
+            msg["id"],
+            {
+                "session_id": raw_session_id,
+                ATTR_SESSION_KEY: scoped_session_id,
+                ATTR_HA_USER_ID: ha_user_id,
+                ATTR_AGENT_ID: agent_id,
+                "messages": history,
+            },
+        )
 
     websocket_api.async_register_command(hass, websocket_get_history)
 
@@ -813,6 +862,9 @@ def _async_register_websocket_api(hass: HomeAssistant) -> None:
         """Return frontend-related integration settings."""
         entry_data = _get_first_entry_data(hass)
         options = _get_entry_options(hass, entry_data) if entry_data else {}
+        connection_user = getattr(connection, "user", None)
+        ha_user_id = normalize_ha_user_id(getattr(connection_user, "id", None))
+        agent_id = resolve_agent_id(ha_user_id)
         connection.send_result(
             msg["id"],
             {
@@ -837,6 +889,8 @@ def _async_register_websocket_api(hass: HomeAssistant) -> None:
                     CONF_THINKING_TIMEOUT,
                     DEFAULT_THINKING_TIMEOUT,
                 ),
+                ATTR_HA_USER_ID: ha_user_id,
+                ATTR_AGENT_ID: agent_id,
                 "language": hass.config.language,
             },
         )
diff --git a/custom_components/openclaw/const.py b/custom_components/openclaw/const.py
index b96a69c..adbe079 100644
--- a/custom_components/openclaw/const.py
+++ b/custom_components/openclaw/const.py
@@ -138,6 +138,7 @@ ATTR_DRY_RUN = "dry_run"
 ATTR_MESSAGE_CHANNEL = "message_channel"
 ATTR_ACCOUNT_ID = "account_id"
 ATTR_AGENT_ID = "agent_id"
+ATTR_HA_USER_ID = "ha_user_id"
 ATTR_OK = "ok"
 ATTR_RESULT = "result"
 ATTR_ERROR = "error"
diff --git a/custom_components/openclaw/conversation.py b/custom_components/openclaw/conversation.py
index 633a7d1..8eef923 100644
--- a/custom_components/openclaw/conversation.py
+++ b/custom_components/openclaw/conversation.py
@@ -19,18 +19,18 @@ from homeassistant.helpers import intent
 
 from .api import OpenClawApiClient, OpenClawApiError
 from .const import (
+    ATTR_AGENT_ID,
+    ATTR_HA_USER_ID,
     ATTR_MESSAGE,
     ATTR_MODEL,
     ATTR_SESSION_ID,
+    ATTR_SESSION_KEY,
     ATTR_TIMESTAMP,
     CONF_ASSIST_SESSION_ID,
-    CONF_AGENT_ID,
     CONF_CONTEXT_MAX_CHARS,
     CONF_CONTEXT_STRATEGY,
     CONF_INCLUDE_EXPOSED_CONTEXT,
-    CONF_VOICE_AGENT_ID,
     DEFAULT_ASSIST_SESSION_ID,
-    DEFAULT_AGENT_ID,
     DEFAULT_CONTEXT_MAX_CHARS,
     DEFAULT_CONTEXT_STRATEGY,
     DEFAULT_INCLUDE_EXPOSED_CONTEXT,
@@ -41,6 +41,7 @@ from .const import (
 from .coordinator import OpenClawCoordinator
 from .exposure import apply_context_policy, build_exposed_entities_context
 from .helpers import extract_text_recursive
+from .routing import normalize_ha_user_id, resolve_agent_id, resolve_model_override
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -121,19 +122,12 @@ class OpenClawConversationAgent(conversation.AbstractConversationAgent):
 
         message = user_input.text
         assistant_id = "conversation"
+        context = getattr(user_input, "context", None)
+        ha_user_id = normalize_ha_user_id(getattr(context, "user_id", None))
         options = self.entry.options
-        voice_agent_id = self._normalize_optional_text(
-            options.get(CONF_VOICE_AGENT_ID)
-        )
-        configured_agent_id = self._normalize_optional_text(
-            options.get(
-                CONF_AGENT_ID,
-                self.entry.data.get(CONF_AGENT_ID, DEFAULT_AGENT_ID),
-            )
-        )
-        resolved_agent_id = voice_agent_id or configured_agent_id
+        resolved_agent_id = resolve_agent_id(ha_user_id)
         conversation_id = self._resolve_conversation_id(user_input, resolved_agent_id)
-        active_model = self._normalize_optional_text(options.get("active_model"))
+        active_model = resolve_model_override(options.get("active_model"))
         include_context = options.get(
             CONF_INCLUDE_EXPOSED_CONTEXT,
             DEFAULT_INCLUDE_EXPOSED_CONTEXT,
@@ -203,6 +197,9 @@ class OpenClawConversationAgent(conversation.AbstractConversationAgent):
             {
                 ATTR_MESSAGE: full_response,
                 ATTR_SESSION_ID: conversation_id,
+                ATTR_SESSION_KEY: conversation_id,
+                ATTR_HA_USER_ID: ha_user_id,
+                ATTR_AGENT_ID: resolved_agent_id,
                 ATTR_MODEL: coordinator.data.get(DATA_MODEL) if coordinator.data else None,
                 ATTR_TIMESTAMP: datetime.now(timezone.utc).isoformat(),
             },
diff --git a/custom_components/openclaw/manifest.json b/custom_components/openclaw/manifest.json
index 7f6650d..e5ba780 100644
--- a/custom_components/openclaw/manifest.json
+++ b/custom_components/openclaw/manifest.json
@@ -8,7 +8,7 @@
   "iot_class": "local_polling",
   "issue_tracker": "https://github.com/techartdev/OpenClawHomeAssistantIntegration/issues",
   "requirements": [],
-  "version": "0.1.62",
+  "version": "0.1.63",
   "dependencies": ["conversation"],
   "after_dependencies": ["hassio", "lovelace"]
 }
diff --git a/custom_components/openclaw/routing.py b/custom_components/openclaw/routing.py
new file mode 100644
index 0000000..9f16488
--- /dev/null
+++ b/custom_components/openclaw/routing.py
@@ -0,0 +1,71 @@
+"""Routing helpers for Home Assistant user-aware OpenClaw chat sessions."""
+
+from __future__ import annotations
+
+import re
+from typing import Any
+
+DEFAULT_CHAT_AGENT_ID = "tetra-home"
+SYSTEM_HA_USER_ID = "system"
+
+HA_USER_AGENT_MAP: dict[str, str] = {
+    "bd3f666f43f941e886ef007a794eefe8": "main",
+    "1d2be9a622584cf0abb1c243d12a9959": "family-krzysztof",
+    "eca5887898544556840878ab37a35fbc": "family-ewa",
+    "2f5bf9f09478400082380bf7f26966d9": "family-tosia",
+    "f613d90efe8b4afea63c4a5a7ef7b559": "family-domi",
+}
+
+
+def normalize_optional_text(value: Any) -> str | None:
+    """Return a stripped string, or None for blank/non-string values."""
+    if not isinstance(value, str):
+        return None
+    cleaned = value.strip()
+    return cleaned or None
+
+
+def normalize_ha_user_id(value: Any) -> str:
+    """Return a stable HA user id for routing/history scope."""
+    return normalize_optional_text(value) or SYSTEM_HA_USER_ID
+
+
+def resolve_agent_id(
+    ha_user_id: str | None,
+    explicit_agent_id: str | None = None,
+) -> str:
+    """Resolve the OpenClaw agent for a Home Assistant user."""
+    if explicit_agent_id:
+        return explicit_agent_id
+    normalized_user_id = normalize_ha_user_id(ha_user_id)
+    return HA_USER_AGENT_MAP.get(normalized_user_id, DEFAULT_CHAT_AGENT_ID)
+
+
+def resolve_model_override(value: Any) -> str | None:
+    """Return a provider model override, excluding OpenClaw pseudo-model ids."""
+    model = normalize_optional_text(value)
+    if model and model.startswith("openclaw/"):
+        return None
+    return model
+
+
+def build_scoped_session_id(
+    raw_session_id: str | None,
+    ha_user_id: str | None,
+    agent_id: str | None,
+) -> str:
+    """Build the backend/gateway session id scoped by user, agent, and raw session."""
+    raw_session = normalize_optional_text(raw_session_id) or "default"
+    user = normalize_ha_user_id(ha_user_id)
+    agent = normalize_optional_text(agent_id) or DEFAULT_CHAT_AGENT_ID
+    return (
+        f"ha_user_{_sanitize_session_part(user)}"
+        f"__agent_{_sanitize_session_part(agent)}"
+        f"__session_{_sanitize_session_part(raw_session)}"
+    )
+
+
+def _sanitize_session_part(value: str) -> str:
+    """Keep scoped session ids header-safe and readable."""
+    cleaned = re.sub(r"[^A-Za-z0-9_.-]+", "_", value.strip())
+    return cleaned.strip("_") or "default"
diff --git a/custom_components/openclaw/select.py b/custom_components/openclaw/select.py
index b330a92..899e42d 100644
--- a/custom_components/openclaw/select.py
+++ b/custom_components/openclaw/select.py
@@ -72,7 +72,8 @@ class OpenClawModelSelect(CoordinatorEntity[OpenClawCoordinator], SelectEntity):
         # Initialise from coordinator cache
         models = coordinator.available_models
         self._attr_options = models if models else ["unknown"]
-        current = (coordinator.data or {}).get(DATA_MODEL)
+        selected = entry.options.get(description.key)
+        current = selected or (coordinator.data or {}).get(DATA_MODEL)
         self._attr_current_option = current if current in self._attr_options else (
             self._attr_options[0] if self._attr_options else None
         )
@@ -83,7 +84,8 @@ class OpenClawModelSelect(CoordinatorEntity[OpenClawCoordinator], SelectEntity):
         models = self.coordinator.available_models
         if models:
             self._attr_options = models
-        current = (self.coordinator.data or {}).get(DATA_MODEL)
+        selected = self._entry.options.get(self.entity_description.key)
+        current = selected or (self.coordinator.data or {}).get(DATA_MODEL)
         if current and current in self._attr_options:
             self._attr_current_option = current
         self.async_write_ha_state()
diff --git a/custom_components/openclaw/sensor.py b/custom_components/openclaw/sensor.py
index 4cae0bf..83d6b8b 100644
--- a/custom_components/openclaw/sensor.py
+++ b/custom_components/openclaw/sensor.py
@@ -120,6 +120,7 @@ class OpenClawSensor(CoordinatorEntity[OpenClawCoordinator], SensorEntity):
         """Initialize the sensor."""
         super().__init__(coordinator)
         self.entity_description = description
+        self._entry = entry
         self._attr_unique_id = f"{entry.entry_id}_{description.key}"
         self._attr_device_info = {
             "identifiers": {(DOMAIN, entry.entry_id)},
@@ -134,6 +135,10 @@ class OpenClawSensor(CoordinatorEntity[OpenClawCoordinator], SensorEntity):
         """Return the state of the sensor."""
         if not self.coordinator.data:
             return None
+        if self.entity_description.key == DATA_MODEL:
+            selected = self._entry.options.get("active_model")
+            if selected:
+                return selected
         return self.coordinator.data.get(self.entity_description.key)
 
     @property
diff --git a/custom_components/openclaw/services.yaml b/custom_components/openclaw/services.yaml
index 9b9f255..52849ed 100644
--- a/custom_components/openclaw/services.yaml
+++ b/custom_components/openclaw/services.yaml
@@ -20,8 +20,8 @@ send_message:
     agent_id:
       name: Agent ID
       description: >
-        Optional OpenClaw agent ID to route this message to. Overrides the
-        agent ID configured in the integration options. Defaults to "main".
+        Optional OpenClaw agent ID to route this message to. When omitted,
+        the integration routes by the Home Assistant user who called the service.
       required: false
       example: "main"
       selector:
@@ -29,11 +29,17 @@ send_message:
 
 clear_history:
   name: Clear History
-  description: Clear the conversation history for a session.
+  description: Clear scoped conversation history for the current Home Assistant user.
   fields:
     session_id:
       name: Session ID
-      description: Session ID to clear. If omitted, clears the default session.
+      description: Session ID to clear. If omitted, clears this user's sessions for the resolved agent.
+      required: false
+      selector:
+        text:
+    agent_id:
+      name: Agent ID
+      description: Optional OpenClaw agent ID override for the history scope.
       required: false
       selector:
         text:
diff --git a/custom_components/openclaw/strings.json b/custom_components/openclaw/strings.json
index 8246532..32fc8cb 100644
--- a/custom_components/openclaw/strings.json
+++ b/custom_components/openclaw/strings.json
@@ -127,17 +127,21 @@
         },
         "agent_id": {
           "name": "Agent ID",
-          "description": "Optional OpenClaw agent ID to route this message to. Overrides the configured default. Defaults to \"main\"."
+          "description": "Optional OpenClaw agent ID to route this message to. When omitted, OpenClaw routes by the Home Assistant user who called the service."
         }
       }
     },
     "clear_history": {
       "name": "Clear History",
-      "description": "Clear conversation history.",
+      "description": "Clear scoped conversation history for the current Home Assistant user.",
       "fields": {
         "session_id": {
           "name": "Session ID",
-          "description": "Session to clear."
+          "description": "Session to clear. If omitted, clears this user's sessions for the resolved agent."
+        },
+        "agent_id": {
+          "name": "Agent ID",
+          "description": "Optional OpenClaw agent ID override for the history scope."
         }
       }
     },
diff --git a/custom_components/openclaw/translations/en.json b/custom_components/openclaw/translations/en.json
index fc8df9d..6690599 100644
--- a/custom_components/openclaw/translations/en.json
+++ b/custom_components/openclaw/translations/en.json
@@ -129,17 +129,21 @@
         },
         "agent_id": {
           "name": "Agent ID",
-          "description": "Optional OpenClaw agent ID to route this message to. Overrides the configured default. Defaults to \"main\"."
+          "description": "Optional OpenClaw agent ID to route this message to. When omitted, OpenClaw routes by the Home Assistant user who called the service."
         }
       }
     },
     "clear_history": {
       "name": "Clear History",
-      "description": "Clear conversation history.",
+      "description": "Clear scoped conversation history for the current Home Assistant user.",
       "fields": {
         "session_id": {
           "name": "Session ID",
-          "description": "Session to clear."
+          "description": "Session to clear. If omitted, clears this user's sessions for the resolved agent."
+        },
+        "agent_id": {
+          "name": "Agent ID",
+          "description": "Optional OpenClaw agent ID override for the history scope."
         }
       }
     },
diff --git a/custom_components/openclaw/www/openclaw-chat-card.js b/custom_components/openclaw/www/openclaw-chat-card.js
index a9ab1c4..664d4f0 100644
--- a/custom_components/openclaw/www/openclaw-chat-card.js
+++ b/custom_components/openclaw/www/openclaw-chat-card.js
@@ -13,7 +13,7 @@
  * + subscribes to openclaw_message_received events.
  */
 
-const CARD_VERSION = "0.3.13";
+const CARD_VERSION = "0.3.14";
 
 // Max time (ms) to show the thinking indicator before falling back to an error (default; overridable via card config `thinking_timeout` in seconds)
 const THINKING_TIMEOUT_MS = 120_000;
@@ -96,6 +96,9 @@ class OpenClawChatCard extends HTMLElement {
     this._autoScrollPinned = true;
     this._lastHassRenderSignature = null;
     this._integrationThinkingTimeout = null;
+    this._backendHaUserId = null;
+    this._activeAgentId = null;
+    this._lastStorageIdentity = null;
   }
 
   // ── HA card interface ───────────────────────────────────────────────
@@ -128,8 +131,15 @@ class OpenClawChatCard extends HTMLElement {
 
   set hass(hass) {
     const firstSet = !this._hass;
+    const previousStorageIdentity = this._getStorageIdentity();
     this._hass = hass;
     const currentSignature = this._getHassRenderSignature(hass);
+    const currentStorageIdentity = this._getStorageIdentity();
+    if (currentStorageIdentity !== previousStorageIdentity) {
+      this._lastStorageIdentity = currentStorageIdentity;
+      this._resetTransientChatState();
+      this._restoreMessages();
+    }
     if (firstSet) {
       this._subscribeToEvents();
       this._syncHistoryFromBackend();
@@ -252,11 +262,19 @@ class OpenClawChatCard extends HTMLElement {
     const data = event.data;
     if (!data || !data.message) return;
 
+    const haUserId = this._getHaUserId();
+    if (data.ha_user_id && haUserId === "unknown") {
+      this._syncHistoryFromBackend(1);
+      return;
+    }
+    if (data.ha_user_id && haUserId !== "unknown" && data.ha_user_id !== haUserId) return;
+    if (data.agent_id && this._activeAgentId && data.agent_id !== this._activeAgentId) return;
+
     // Check if this event is for our session
     const sessionId = this._getSessionId();
     if (data.session_id && data.session_id !== sessionId) return;
 
-    const signature = `${sessionId}|${data.timestamp || ""}|${String(data.message)}`;
+    const signature = `${haUserId}|${data.agent_id || ""}|${sessionId}|${data.timestamp || ""}|${String(data.message)}`;
     if (signature === this._lastAssistantEventSignature) {
       return;
     }
@@ -295,7 +313,16 @@ class OpenClawChatCard extends HTMLElement {
     }
   }
 
-  _clearChat() {
+  async _clearChat() {
+    if (this._hass) {
+      try {
+        await this._hass.callService("openclaw", "clear_history", {
+          session_id: this._getSessionId(),
+        });
+      } catch (err) {
+        console.warn("OpenClaw: backend history clear failed:", err);
+      }
+    }
     this._messages = [];
     this._isProcessing = false;
     this._pendingResponses = 0;
@@ -304,11 +331,31 @@ class OpenClawChatCard extends HTMLElement {
     this._render();
   }
 
+  _resetTransientChatState() {
+    this._isProcessing = false;
+    this._pendingResponses = 0;
+    this._clearThinkingTimer();
+    this._lastAssistantEventSignature = null;
+  }
+
   // ── Message persistence ──────────────────────────────────────────────
 
+  _getHaUserId() {
+    return (
+      this._hass?.user?.id ||
+      this._backendHaUserId ||
+      "unknown"
+    );
+  }
+
+  _getStorageIdentity() {
+    return `${this._getHaUserId()}|${this._getSessionId()}`;
+  }
+
   _getStorageKey() {
+    const userId = this._getHaUserId();
     const session = this._getSessionId();
-    return `${STORAGE_PREFIX}${session}`;
+    return `${STORAGE_PREFIX}${userId}_${session}`;
   }
 
   _getSessionId() {
@@ -329,9 +376,8 @@ class OpenClawChatCard extends HTMLElement {
   _restoreMessages() {
     try {
       const stored = sessionStorage.getItem(this._getStorageKey());
-      if (stored) {
-        this._messages = JSON.parse(stored);
-      }
+      const parsed = stored ? JSON.parse(stored) : [];
+      this._messages = Array.isArray(parsed) ? parsed : [];
     } catch (e) {
       // Corrupted data — start fresh
       this._messages = [];
@@ -357,6 +403,18 @@ class OpenClawChatCard extends HTMLElement {
         });
       }
 
+      const previousStorageIdentity = this._getStorageIdentity();
+      if (result?.ha_user_id) {
+        this._backendHaUserId = result.ha_user_id;
+      }
+      if (result?.agent_id) {
+        this._activeAgentId = result.agent_id;
+      }
+      if (this._getStorageIdentity() !== previousStorageIdentity) {
+        this._resetTransientChatState();
+        this._restoreMessages();
+      }
+
       const serverMessages = Array.isArray(result?.messages) ? result.messages : [];
       if (!serverMessages.length) return;
 
@@ -426,6 +484,17 @@ class OpenClawChatCard extends HTMLElement {
         typeof result?.thinking_timeout === "number" && result.thinking_timeout >= 10
           ? result.thinking_timeout * 1000
           : null;
+      const previousStorageIdentity = this._getStorageIdentity();
+      if (result?.ha_user_id) {
+        this._backendHaUserId = result.ha_user_id;
+      }
+      if (result?.agent_id) {
+        this._activeAgentId = result.agent_id;
+      }
+      if (this._getStorageIdentity() !== previousStorageIdentity) {
+        this._resetTransientChatState();
+        this._restoreMessages();
+      }
 
       if (includePipeline) {
         try {
@@ -2185,7 +2254,11 @@ class OpenClawChatCard extends HTMLElement {
     const clearBtn = this.shadowRoot.getElementById("clear-btn");
     if (clearBtn) {
       clearBtn.addEventListener("click", () => {
-        if (confirm("Clear chat history?")) this._clearChat();
+        if (confirm("Clear chat history?")) {
+          this._clearChat().catch((err) => {
+            console.error("OpenClaw: clear chat failed", err);
+          });
+        }
       });
     }
 
diff --git a/www/openclaw-chat-card.js b/www/openclaw-chat-card.js
index 5796959..eb7489d 100644
--- a/www/openclaw-chat-card.js
+++ b/www/openclaw-chat-card.js
@@ -1,7 +1,7 @@
 (async () => {
   try {
     if (!customElements.get("openclaw-chat-card")) {
-      const src = "/openclaw/openclaw-chat-card.js?v=0.1.62";
+      const src = "/openclaw/openclaw-chat-card.js?v=0.1.63";
       console.info("OpenClaw loader importing", src);
       await import(src);
     }