feat: agent workflow builder (#2264)

* feat: implement WorkflowAgent and GraphExecutor for workflow management and execution

* refactor: workflow schemas and introduce WorkflowEngine

- Updated schemas in `schemas.py` to include new agent types and configurations.
- Created `WorkflowEngine` class in `workflow_engine.py` to manage workflow execution.
- Enhanced `StreamProcessor` to handle workflow-related data.
- Added new routes and utilities for managing workflows in the user API.
- Implemented validation and serialization functions for workflows.
- Established MongoDB collections and indexes for workflows and related entities.

* refactor: improve WorkflowAgent documentation and update type hints in WorkflowEngine

* feat: workflow builder and managing in frontend

- Added new endpoints for workflows in `endpoints.ts`.
- Implemented `getWorkflow`, `createWorkflow`, and `updateWorkflow` methods in `userService.ts`.
- Introduced new UI components for alerts, buttons, commands, dialogs, multi-select, popovers, and selects.
- Enhanced styling in `index.css` with new theme variables and animations.
- Refactored modal components for better layout and styling.
- Configured TypeScript paths and Vite aliases for cleaner imports.

* feat: add workflow preview component and related state management

- Implemented WorkflowPreview component for displaying workflow execution.
- Created WorkflowPreviewSlice for managing workflow preview state, including queries and execution steps.
- Added WorkflowMiniMap for visual representation of workflow nodes and their statuses.
- Integrated conversation handling with the ability to fetch answers and manage query states.
- Introduced reusable Sheet component for UI overlays.
- Updated Redux store to include workflowPreview reducer.

* feat: enhance workflow execution details and state management in WorkflowEngine and WorkflowPreview

* feat: enhance workflow components with improved UI and functionality

- Updated WorkflowPreview to allow text truncation for better display of long names.
- Enhanced BaseNode with connectable handles and improved styling for better visibility.
- Added MobileBlocker component to inform users about desktop requirements for the Workflow Builder.
- Introduced PromptTextArea component for improved variable insertion and search functionality, including upstream variable extraction and context addition.

* feat(workflow): add owner validation and graph version support

* fix: ruff lint

---------

Co-authored-by: Alex <a@tushynski.me>

application/api/user/base.py

@@ -38,6 +38,10 @@ users_collection = db["users"]
 user_logs_collection = db["user_logs"]
 user_tools_collection = db["user_tools"]
 attachments_collection = db["attachments"]
+workflow_runs_collection = db["workflow_runs"]
+workflows_collection = db["workflows"]
+workflow_nodes_collection = db["workflow_nodes"]
+workflow_edges_collection = db["workflow_edges"]
 
 
 try:
@@ -47,6 +51,25 @@ try:
         background=True,
     )
     users_collection.create_index("user_id", unique=True)
+    workflows_collection.create_index(
+        [("user", 1)], name="workflow_user_index", background=True
+    )
+    workflow_nodes_collection.create_index(
+        [("workflow_id", 1)], name="node_workflow_index", background=True
+    )
+    workflow_nodes_collection.create_index(
+        [("workflow_id", 1), ("graph_version", 1)],
+        name="node_workflow_graph_version_index",
+        background=True,
+    )
+    workflow_edges_collection.create_index(
+        [("workflow_id", 1)], name="edge_workflow_index", background=True
+    )
+    workflow_edges_collection.create_index(
+        [("workflow_id", 1), ("graph_version", 1)],
+        name="edge_workflow_graph_version_index",
+        background=True,
+    )
 except Exception as e:
     print("Error creating indexes:", e)
 current_dir = os.path.dirname(