:recycle: [Refactor] Separate datimer from chat_history_storage

:hammer: [WIP] New AgentStorage: Define database schema, and load from local configs

:recycle: [Refactor] EndpointStorage: clear log, and typo

:recycle: [Refactor] NewAgentModal: Generalize more wiget ids, and add description widget

:recycle: [Refactor] Separate endpoints configs

:zap: [Enhance] Enable RangeNumber widget append and real-time update, generalize widget_id, and check existance before creating modal

:zap: [Enhance] [WIP] Dynamicly creating NewAgentModal

:zap: [Enhance] Prettify form formats of new agent modal, and auto resize system prompt input

:hammer: [WIP] NewAgentModal: Prettify with form-floating; need to auto height

:hammer: [WIP] New Agent Modal: Enable toggle button and prototype

:zap: [Enhance] New Agent button placeholder

:boom: [Fix] ChatCompletionsRequester: select endpoint and model

:zap: [Enhance] EndpointStorage: fetch_available_models and set select and default_model with promise

:recycle: [Refactor] Remove global available_models variable, and use promise return

:gem: [Feature] Place endpoints in local secrets

:recycle: [Refactor] Re-organize and rename storage scripts

:zap: [Enhance] Prettify dark theme

:gem: [Feature] New dark theme toggle button

:zap: [Enhance] Prettify icons and input placeholders

:zap: [Enhance] New v4 fa icons, sidebar toggle button icons and title, and reduce SIDEBAR_MAX_WIDTH

:gem: [Feature] New Chat Agents Sidebar

:boom: [Fix] Execute stop workflow when requester finished

:boom: [Fix] Stop button not working for await mechanism

:recycle: [Refactor] SendUserInputButtonBinder: Remove post_user_input() to avoid confusion

:zap: [Enhance] Correctly place components in main-container with d-flex css

:recycle: [Refactor] ChatCompletionRequester: post

:recycle: [Refactor] Re-position styles in css

:boom: [Fix] Auto resize user input after send

:zap: [Enhance] Finetune margin and padding of messagers-container for screenshot

:zap: [Enhance] css for top-toolbar, and re-position styles for fa

:zap: [Enhance] Behavior of toggle and add endpoint item

:zap: [Enhance] Re-positioning UI components

:zap: [Enhance] Remove user input content after send

:zap: [Enhance] Modify placeholder of user input, and hide temperature select

:zap: [Enhance] Prettify footnote number formats

:zap: [Enhance] Replace background from gradient image to color to adaptive dark theme

:zap: [Enhance] Replace some bootstrap styles with pure css, and improve color palettes

:zap: [Enhance] Prettify UI by adding box-shadow and background-image linear-gradient

:zap: [Enhance] Confirm before clear chat history, toggle if add new point, and change icons

:boom: [Fix] Unable to parse broken chunks in same line

:boom: [Fix] Auto hide endpoint items, and correctly set default_model

:boom: [Fix] Same line broken into multiple chunks

:boom: [Fix] Only fetch /models for http(s) endpoint

:boom: [Fix] auto switch endpoint for selected model

:boom: [Fix] fill_available_models select for each endpoint

:gem: [Feature] Bind remove endpoint_and_api_key button

:boom: [Fix] Unable to bind endpoint_and_api_key buttons

:boom: [Fix] Revert default_model set from Dexie back to localStorage

:boom: [ToFix] Unable to get and set default_model

:gem: [Feature] Enable fill-in available models from multiple endpoints