diff --git a/agent/alembic.ini b/agent/alembic.ini
new file mode 100644
index 0000000..807ded2
--- /dev/null
+++ b/agent/alembic.ini
@@ -0,0 +1,149 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts.
+# this is typically a path given in POSIX (e.g. forward slashes)
+# format, relative to the token %(here)s which refers to the location of this
+# ini file
+script_location = %(here)s/alembic
+
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+# see https://alembic.sqlalchemy.org/en/latest/tutorial.html#editing-the-ini-file
+# for all available tokens
+# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
+# Or organize into date-based subdirectories (requires recursive_version_locations = true)
+# file_template = %%(year)d/%%(month).2d/%%(day).2d_%%(hour).2d%%(minute).2d_%%(second).2d_%%(rev)s_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.  for multiple paths, the path separator
+# is defined by "path_separator" below.
+prepend_sys_path = .
+
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the tzdata library which can be installed by adding
+# `alembic[tz]` to the pip requirements.
+# string value is passed to ZoneInfo()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to <script_location>/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "path_separator"
+# below.
+# version_locations = %(here)s/bar:%(here)s/bat:%(here)s/alembic/versions
+
+# path_separator; This indicates what character is used to split lists of file
+# paths, including version_locations and prepend_sys_path within configparser
+# files such as alembic.ini.
+# The default rendered in new alembic.ini files is "os", which uses os.pathsep
+# to provide os-dependent path splitting.
+#
+# Note that in order to support legacy alembic.ini files, this default does NOT
+# take place if path_separator is not present in alembic.ini.  If this
+# option is omitted entirely, fallback logic is as follows:
+#
+# 1. Parsing of the version_locations option falls back to using the legacy
+#    "version_path_separator" key, which if absent then falls back to the legacy
+#    behavior of splitting on spaces and/or commas.
+# 2. Parsing of the prepend_sys_path option falls back to the legacy
+#    behavior of splitting on spaces, commas, or colons.
+#
+# Valid values for path_separator are:
+#
+# path_separator = :
+# path_separator = ;
+# path_separator = space
+# path_separator = newline
+#
+# Use os.pathsep. Default configuration used for new projects.
+path_separator = os
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+# database URL.  This is consumed by the user-maintained env.py script only.
+# other means of configuring database URLs may be customized within the env.py
+# file.
+sqlalchemy.url = driver://user:pass@localhost/dbname
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# lint with attempts to fix using "ruff" - use the module runner, against the "ruff" module
+# hooks = ruff
+# ruff.type = module
+# ruff.module = ruff
+# ruff.options = check --fix REVISION_SCRIPT_FILENAME
+
+# Alternatively, use the exec runner to execute a binary found on your PATH
+# hooks = ruff
+# ruff.type = exec
+# ruff.executable = ruff
+# ruff.options = check --fix REVISION_SCRIPT_FILENAME
+
+# Logging configuration.  This is also consumed by the user-maintained
+# env.py script only.
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARNING
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARNING
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S
diff --git a/agent/alembic/README b/agent/alembic/README
new file mode 100644
index 0000000..98e4f9c
--- /dev/null
+++ b/agent/alembic/README
@@ -0,0 +1 @@
+Generic single-database configuration.
\ No newline at end of file
diff --git a/agent/alembic/env.py b/agent/alembic/env.py
new file mode 100644
index 0000000..36112a3
--- /dev/null
+++ b/agent/alembic/env.py
@@ -0,0 +1,78 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = None
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
diff --git a/agent/alembic/script.py.mako b/agent/alembic/script.py.mako
new file mode 100644
index 0000000..1101630
--- /dev/null
+++ b/agent/alembic/script.py.mako
@@ -0,0 +1,28 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, Sequence[str], None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}
diff --git a/agent/alembic/versions/a7968da75b72_.py b/agent/alembic/versions/a7968da75b72_.py
new file mode 100644
index 0000000..d079021
--- /dev/null
+++ b/agent/alembic/versions/a7968da75b72_.py
@@ -0,0 +1,98 @@
+"""empty message
+
+Revision ID: a7968da75b72
+Revises: 
+Create Date: 2026-07-26 23:23:19.558164
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+# revision identifiers, used by Alembic.
+revision: str = 'a7968da75b72'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('captcharecord',
+    sa.Column('email', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('captcha', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('is_valid', sa.Boolean(), nullable=False),
+    sa.Column('is_verified', sa.Boolean(), nullable=False),
+    sa.Column('expired_at', sa.DateTime(), nullable=False),
+    sa.PrimaryKeyConstraint('email', 'captcha', 'expired_at')
+    )
+    with op.batch_alter_table('captcharecord', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_captcharecord_is_valid'), ['is_valid'], unique=False)
+        batch_op.create_index(batch_op.f('ix_captcharecord_is_verified'), ['is_verified'], unique=False)
+
+    op.create_table('conversationrecord',
+    sa.Column('id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('user_id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('description', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('is_deleted', sa.Boolean(), nullable=False),
+    sa.Column('created_at', sa.DateTime(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('conversationrecord', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_conversationrecord_is_deleted'), ['is_deleted'], unique=False)
+        batch_op.create_index(batch_op.f('ix_conversationrecord_user_id'), ['user_id'], unique=False)
+
+    op.create_table('dialogrecord',
+    sa.Column('id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('conversation_id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('user_prompt', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('thoughts', sa.JSON(), nullable=False),
+    sa.Column('result_output', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('dialogrecord', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_dialogrecord_conversation_id'), ['conversation_id'], unique=False)
+
+    op.create_table('resultrecord',
+    sa.Column('conversation_id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('dialog_id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('new_messages', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.PrimaryKeyConstraint('conversation_id', 'dialog_id')
+    )
+    op.create_table('userrecord',
+    sa.Column('id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('email', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('userrecord', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_userrecord_email'), ['email'], unique=False)
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('userrecord', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_userrecord_email'))
+
+    op.drop_table('userrecord')
+    op.drop_table('resultrecord')
+    with op.batch_alter_table('dialogrecord', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_dialogrecord_conversation_id'))
+
+    op.drop_table('dialogrecord')
+    with op.batch_alter_table('conversationrecord', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_conversationrecord_user_id'))
+        batch_op.drop_index(batch_op.f('ix_conversationrecord_is_deleted'))
+
+    op.drop_table('conversationrecord')
+    with op.batch_alter_table('captcharecord', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_captcharecord_is_verified'))
+        batch_op.drop_index(batch_op.f('ix_captcharecord_is_valid'))
+
+    op.drop_table('captcharecord')
+    # ### end Alembic commands ###
diff --git a/agent/application/application.py b/agent/application/application.py
index eba6182..af2e2fa 100644
--- a/agent/application/application.py
+++ b/agent/application/application.py
@@ -6,7 +6,7 @@ import reflex as rx
 from application.pages.index import index
 
 app = rx.App(
-    theme=rx.theme(),
+    theme=rx.theme(color_mode="light"),
     stylesheets=["/styles.css"],
     style={
         "box-shadow": "none",
diff --git a/agent/application/domain_models.py b/agent/application/domain_models.py
index 2864271..2ceae48 100644
--- a/agent/application/domain_models.py
+++ b/agent/application/domain_models.py
@@ -25,7 +25,7 @@ class Dialog(BaseModel):
 
     id: str = Field(default_factory=lambda: str(uuid7()), description="对话唯一标识")
     user_prompt: str = Field(..., description="用户提示词")
-    thoughts: List[Thought] = Field(default_factory=List, description="思考列表")
+    thoughts: List[Thought] = Field(default_factory=list, description="思考列表")
     result_output: str = Field(default="", description="结果输出")
     is_thinking: bool = Field(
         default=False, description="正在思考，True 表示正在思考，False 表示未正在思考"
@@ -45,7 +45,7 @@ class Conversation(BaseModel):
     is_running: bool = Field(
         default=False, description="正在运行，True 表示正在运行，False 表示未正在运行"
     )
-    dialogs: Dict[str, Dialog] = Field(default_factory=Dict, description="对话列表")
+    dialogs: Dict[str, Dialog] = Field(default_factory=dict, description="对话列表")
     created_at: datetime = Field(default_factory=datetime.now, description="创建时间")
 
 
diff --git a/agent/application/pages/index.py b/agent/application/pages/index.py
index c9dde18..24c590a 100644
--- a/agent/application/pages/index.py
+++ b/agent/application/pages/index.py
@@ -210,76 +210,78 @@ def sidebar() -> rx.Component:
     )
 
 
-def login_window() -> rx.Component:
+def login_popup() -> rx.Component:
     """
-    登录窗
+    登录弹窗
     :return: Component
     """
 
     return rx.center(
         rx.hstack(
             rx.vstack(
+                # 标题
                 rx.text(
                     "登录解锁更多功能",
+                    margin_bottom="24px",
                     line_height="32px",
                     font_size="var(--prismui-font-size-3)",
                     font_weight="var(--prismui-font-weight-3)",
-                    margin_bottom="24px",
                 ),
+                # 邮箱输入框
                 rx.input(
-                    placeholder="请输入邮箱地址",
+                    placeholder="请输入邮箱",
+                    # 值绑定邮箱
                     value=AuthState.email,
-                    width="100%",
-                    height="45px",
-                    margin_bottom="24px",
-                    padding="4px",
-                    border_radius="var(--prismui-border-radius-4)",
-                    line_height="16px",
                     # 值变化事件：设置邮箱
                     on_change=AuthState.set_email,
                     # 获取焦点事件：重置登录错误信息
-                    on_focus=AuthState.reset_error_message,
+                    on_focus=AuthState.reset_login_error_message,
+                    width="100%",
+                    height="45px",
+                    padding="4px",
+                    margin_bottom="24px",
+                    border_radius="var(--prismui-border-radius-4)",
+                    line_height="16px",
                 ),
-                # 自定义验证码输入框
+                # 验证码输入框
                 rx.hstack(
                     rx.input(
                         placeholder="请输入验证码",
-                        max_length=6,
+                        # 值绑定验证码
                         value=AuthState.captcha,
+                        max_length=6,
                         # 值变化事件：设置验证码
                         on_change=AuthState.set_captcha,
                         # 获取焦点事件：重置登录错误信息
-                        on_focus=AuthState.reset_error_message,
+                        on_focus=AuthState.reset_login_error_message,
                         flex=1,
                         height="100%",
                         padding="4px",
+                        border_radius="var(--prismui-border-radius-4)",
                         line_height="16px",
-                        border="none",
-                        style={
-                            "&": {
-                                "border": "none !important",
-                            },  # 清除父元素边框
-                        },
+                        border="none !important",
                     ),
                     rx.button(
-                        # 若验证码发送倒计时大于0则显示倒计时，否则显示获取验证码
+                        # 若再次发送验证码倒计时大于0则显示倒计时，否则显示获取验证码
                         rx.cond(
                             AuthState.resend_captcha_countdown > 0,
                             f"{AuthState.resend_captcha_countdown} s",
                             "获取验证码",
                         ),
+                        # 点击事件：发送验证码
+                        on_click=AuthState.send_captcha,
+                        # 是否禁用绑定验证码发送禁用状态
+                        disabled=AuthState.is_captcha_sending_disabled,
                         margin="0 8px",
                         background_color="var(--prismui-background-color-1)",
                         line_height="16px",
+                        # 若验证码发送禁用状态为是则颜色设置为 color-4，否则设置为 color-5（主题色）
                         color=rx.cond(
                             AuthState.is_captcha_sending_disabled,
                             "var(--prismui-color-4)",
                             "var(--prismui-color-5)",
                         ),
                         cursor="pointer",
-                        # 点击事件：发送验证码
-                        on_click=AuthState.send_captcha,
-                        disabled=AuthState.is_captcha_sending_disabled,
                     ),
                     width="100%",
                     height="45px",
@@ -379,7 +381,6 @@ def login_window() -> rx.Component:
                 height="100%",
                 padding="40px 48px 0 48px",
                 align_items="center",
-                background_color="var(--prismui-background-color-1)",
             ),
             rx.vstack(
                 rx.image(
@@ -447,6 +448,6 @@ def index() -> rx.Component:
         rx.cond(
             AuthState.user_id,
             rx.fragment(),
-            login_window(),
+            login_popup(),
         ),
     )
diff --git a/agent/application/states/auth.py b/agent/application/states/auth.py
index 6373624..27b4b46 100644
--- a/agent/application/states/auth.py
+++ b/agent/application/states/auth.py
@@ -51,7 +51,7 @@ class AuthState(rx.State):
     activated_nav_button: str = "conversation"
 
     @rx.event
-    def reset_error_message(self) -> None:
+    def reset_login_error_message(self) -> None:
         """
         重置登录错误信息
         :return: None
diff --git a/agent/database.db b/agent/database.db
index 022cca3..b062bcd 100644
Binary files a/agent/database.db and b/agent/database.db differ