feat(bookmark): Support bookmarking input files

[schloerke]

cc @karangattu

[Copilot]

Pull Request Overview

This PR introduces support for bookmarking file input values by switching the bookmark store from "url" to "server" and adding logic to restore file inputs. Key changes include:

• Updating the configuration in the Express app to use server-based bookmarking.
• Enhancing file input restoration and serialization in the UI, session, input handler, and serializer modules.
• Adjusting test behavior by removing the skip marker and updating project configuration for temporary file handling.

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/playwright/ai_generated_apps/bookmark/input_file/test_input_file_express_bookmarking.py	Removed skip marker to enable test execution
tests/playwright/ai_generated_apps/bookmark/input_file/app-express.py	Changed bookmark_store from "url" to "server"
shiny/ui/_input_file.py	Added restored value handling and associated warning for file input restoration
shiny/session/_session.py	Configured serializer assignment during file input upload
shiny/input_handler.py	Added error handling for non-server bookmark_store and temporary directory usage for file restoration
shiny/bookmark/_serializers.py	Updated the file input serializer logic to work with a list of file info dicts
shiny/bookmark/_bookmark_state.py	Centralized the bookmark folder name for consistency
shiny/_main.py	Updated reload exclusions to ignore the bookmark folder and additional virtual environment folders
pyproject.toml	Added a custom uvicorn source branch to support reload exclusion of absolute paths

Files not reviewed (1)

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Comments suppressed due to low confidence (2)

tests/playwright/ai_generated_apps/bookmark/input_file/test_input_file_express_bookmarking.py:9

• [nitpick] The removal of the skip marker means this test will now run; ensure that the test passes reliably or conditionally skip it if issues persist.

-@pytest.mark.skip("Broken test! TODO: Barret")

shiny/input_handler.py:246

• [nitpick] Creating a new temporary directory for each file input may introduce inefficiencies; consider reusing a single temporary directory to handle multiple files.

tempdir_root = tempfile.TemporaryDirectory()