🌿 feat: Multi-response Streaming (#3191)

* chore: comment back handlePlusCommand

* chore: ignore .git dir

* refactor: pass newConversation to `useSelectMention`

refactor: pass newConversation to Mention component

refactor: useChatFunctions for modular use of `ask` and `regenerate`

refactor: set latest message only for the first index in useChatFunctions

refactor: pass setLatestMessage to useChatFunctions

refactor: Pass setSubmission to useChatFunctions for submission handling

refactor: consolidate event handlers to separate hook from useSSE

WIP: additional response handlers

feat: responsive added convo, clears on new chat/navigating to chat, assistants excluded

feat: Add conversationByKeySelector to select any conversation by index

WIP: handle second submission with messages paired to root

* style: surface-primary-contrast

* refactor: remove unnecessary console.log statement in useChatFunctions

* refactor: Consolidate imports in ChatForm and Input hooks

* refactor: compositional usage of useSSE for multiple streams

* WIP: set latest 'multi' message

* WIP: first pass, added response streaming

* pass: performant multi-message stream

* fix: styling and message render

* second pass: modular, performant multi-stream

* fix: align parentMessageId of multiMessage

* refactor: move resetting latestMultiMessage

* chore: update footer text in Chat component

* fix: stop button styling

* fix: handle abortMessage request for multi-response

* clear messages but bug with latest message reset present

* fix: add delay for additional message generation

* fix: access LAST_CONVO_SETUP by index

* style: add div to prevent layout shift before hover buttons render

* chore: Update Message component styling for card messages

* chore: move hook use order

* fix: abort middleware using unsent field from req.body

* feat: support multi-response stream from initial message

* refactor: buildTree function to improve readability and remove unused code

* feat: add logger for frontend dev

* refactor: use depth to track if message is really last in its branch

* fix(buildTree): default export

* fix: share parent message Id and avoid duplication error for multi-response streams

* fix: prevent addedConvo reset to response convo

* feat: allow setting multi message as latest message to control which to respond to

* chore: wrap setSiblingIdxRev with useCallback

* chore: styling and allow editing messages

* style: styling fixes

* feat: Add "AddMultiConvo" component to Chat Header

* feat: prevent clearing added convos on endpoint, preset, mention, or modelSpec switch

* fix: message styling fixes, mainly related to code blocks

* fix: stop button visibility logic

* fix: Handle edge case in abortMiddleware for non-existant `abortControllers`

* refactor: optimize/memoize icons

* chore(GoogleClient): change info to debug logs

* style: active message styling

* style: prevent layout shift due to placeholder row

* chore: remove unused code

* fix: Update BaseClient to handle optional request body properties

* fix(ci): `onStart` now accepts 2 args, the 2nd being responseMessageId

* chore: bump data-provider

packages/data-provider/src/config.ts

@@ -814,10 +814,14 @@ export enum Constants {
   CONFIG_VERSION = '1.1.4',
   /** Standard value for the first message's `parentMessageId` value, to indicate no parent exists. */
   NO_PARENT = '00000000-0000-0000-0000-000000000000',
+  /** Standard value for the initial conversationId before a request is sent */
+  NEW_CONVO = 'new',
   /** Fixed, encoded domain length for Azure OpenAI Assistants Function name parsing. */
   ENCODED_DOMAIN_LENGTH = 10,
   /** Identifier for using current_model in multi-model requests. */
   CURRENT_MODEL = 'current_model',
+  /** Common divider for text values */
+  COMMON_DIVIDER = '__',
 }
 
 export enum LocalStorageKeys {