Add non-blocking browser-based serving for dashboards

[Butanium]

Implements a .serve() method for both OfflineFeatureCentricDashboard and AbstractOnlineFeatureCentricDashboard that opens a web interface in the browser while keeping the notebook non-blocking.

Architecture:

• Created BaseServableDashboard abstract class with FastAPI server logic
• Both dashboard classes inherit from it and implement:
  • get_initial_html(): Returns form UI
  • handle_request(): Processes form submissions
• Reuses existing HTML generation code

Features:

• Non-blocking: Returns control to notebook immediately
• Clean web UI with forms for all dashboard options
• Works alongside existing .display() for Jupyter widgets
• All subclasses get .serve() for free

Dependencies added:

• fastapi
• uvicorn[standard]
• python-multipart

Usage:
dashboard.serve(port=8000, open_browser=True, block=False)

Generated with Claude Code

[Copilot]

Pull Request Overview

This PR adds a .serve() method to enable non-blocking browser-based serving of feature dashboards using FastAPI and uvicorn. The implementation creates a web interface that allows users to interact with dashboards through HTML forms while keeping notebooks responsive.

Key changes:

• Introduces BaseServableDashboard abstract class providing web server infrastructure
• Both OfflineFeatureCentricDashboard and AbstractOnlineFeatureCentricDashboard now inherit from BaseServableDashboard and implement form UI and request handling
• Adds FastAPI, uvicorn, and python-multipart as dependencies

Reviewed Changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
tiny_dashboard/base_servable_dashboard.py	New abstract base class providing web serving capability with FastAPI/uvicorn
tiny_dashboard/feature_centric_dashboards.py	Added inheritance from BaseServableDashboard and implemented get_initial_html() and handle_request() methods
tiny_dashboard/init.py	Exported BaseServableDashboard
test_serve.py	Test script using real transformers tokenizer
test_serve_simple.py	Test script using mock tokenizer
pyproject.toml	Added fastapi, uvicorn, and python-multipart dependencies

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