refactor(examples): Migrate examples to hub/apps & update links

[yan-gao-GY]

Proposal

Migrate examples to hub/apps & update links.

[Copilot]

Pull request overview

Migrates Flower example apps from examples/ into hub/apps/ and updates repository tooling/docs to point to the new locations.

Changes:

• Repointed docs (Framework/Datasets/Swift) and root READMEs from examples/** to hub/apps/**
• Updated dev tooling/CI scripts (format/test/version bump/e2e) to operate on hub/apps/
• Added a new hub/apps/demo app scaffold (NumPy quickstart-style)

Reviewed changes

Copilot reviewed 53 out of 641 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
hub/apps/flowertune-llm-finance	Removes previous symlink target to examples/
hub/apps/flowertune-llm-code	Removes previous symlink target to examples/
hub/apps/flower-secure-aggregation	Removes previous symlink target to examples/
hub/apps/fl-tabular	Removes previous symlink target to examples/
hub/apps/fl-dp-sa	Removes previous symlink target to examples/
hub/apps/demo/quickstart_numpy/task.py	Adds dummy model helper for the demo app
hub/apps/demo/quickstart_numpy/server_app.py	Adds ServerApp entrypoint for the demo app
hub/apps/demo/quickstart_numpy/client_app.py	Adds ClientApp train/eval handlers for the demo app
hub/apps/demo/quickstart_numpy/init.py	Adds package marker/docstring
hub/apps/demo/pyproject.toml	Adds app packaging metadata and Flower config
hub/apps/demo/README.md	Adds run instructions for the new demo app
hub/apps/custom-mods	Removes previous symlink target to examples/
glossary/edge-computing.mdx	Updates embedded-devices link to hub/apps
framework/swift/flwr/README.md	Updates iOS example link to hub/apps/ios
framework/docs/source/tutorial-quickstart-xgboost.rst	Updates quickstart code link to hub/apps
framework/docs/source/tutorial-quickstart-tensorflow.rst	Updates quickstart code link to hub/apps
framework/docs/source/tutorial-quickstart-scikitlearn.rst	Updates quickstart code links to hub/apps
framework/docs/source/tutorial-quickstart-pytorch.rst	Updates quickstart code link to hub/apps
framework/docs/source/tutorial-quickstart-pytorch-lightning.rst	Updates clone/link paths to hub/apps
framework/docs/source/tutorial-quickstart-pandas.rst	Updates quickstart code link to hub/apps
framework/docs/source/tutorial-quickstart-mlx.rst	Updates quickstart code link to hub/apps
framework/docs/source/tutorial-quickstart-jax.rst	Updates quickstart code link to hub/apps
framework/docs/source/tutorial-quickstart-ios.rst	Updates iOS example links to hub/apps/ios
framework/docs/source/tutorial-quickstart-huggingface.rst	Updates quickstart/flowertune links to hub/apps
framework/docs/source/tutorial-quickstart-fastai.rst	Updates clone/link paths to hub/apps
framework/docs/source/tutorial-quickstart-android.rst	Updates Android example link to hub/apps/android
framework/docs/source/ref-faq.rst	Updates embedded-devices link to hub/apps
framework/docs/source/ref-example-projects.rst	Updates links to hub/apps and removes one example section
framework/docs/source/how-to-use-strategies.rst	Updates quickstart link to hub/apps
framework/docs/source/how-to-use-differential-privacy.rst	Updates opacus link to hub/apps
framework/docs/source/how-to-upgrade-to-message-api.rst	Updates quickstart link to hub/apps
framework/docs/source/how-to-upgrade-to-flower-1.0.rst	Updates examples root link to hub/apps
framework/docs/source/how-to-save-and-load-model-checkpoints.rst	Updates advanced-pytorch link to hub/apps
framework/docs/source/how-to-run-simulations.rst	Updates multiple example links to hub/apps
framework/docs/source/how-to-migrate-from-openfl.rst	Updates examples root link to hub/apps
framework/docs/source/how-to-enable-tls-connections.rst	Updates TLS/auth example link to hub/apps
framework/docs/source/how-to-authenticate-supernodes.rst	Updates auth example link to hub/apps
framework/docs/source/explanation-federated-evaluation.rst	Updates advanced-pytorch link to hub/apps
framework/docs/source/docker/tutorial-deploy-on-multiple-machines.rst	Updates quickstart-sklearn paths to hub/apps
framework/docs/source/docker/run-quickstart-examples-docker-compose.rst	Updates clone/move paths to hub/apps
framework/docs/source/contributor-how-to-set-up-a-virtual-env.rst	Updates “examples” reference to “apps” (hub/apps)
framework/dev/update_version.py	Updates version bump glob from examples/** to hub/apps/**
framework/README.md	Updates example links to hub/apps and trims one item
dev/test.sh	Updates lint/format targets from examples to hub
dev/swift-docs-resources/footer.html	Updates C++ quickstart link to hub/apps
dev/format.sh	Updates formatting targets from examples to hub/apps
dev/devtool/build_example_docs.py	Updates “View on GitHub” link base to hub/apps
datasets/docs/source/recommended-fl-datasets.rst	Updates quickstart-pytorch link to hub/apps
datasets/README.md	Updates “Flower Examples page” link to hub/apps
README.md	Updates example links to hub/apps and trims one item
.github/workflows/framework-test.yml	Updates path filters from examples/**/* to hub/apps/**/*
.github/workflows/framework-e2e.yml	Updates working-directory from examples/ to hub/apps/
.github/CODEOWNERS	Adds hub/ ownership block

Comments suppressed due to low confidence (1)

hub/apps/flowertune-llm-finance:1

• This file previously looks like a Git symlink target (content is a relative path). The diff removes the only line, which typically results in an invalid/empty symlink target (or an empty file, depending on file mode), breaking navigation/discovery. If this app was migrated, this entry should either be deleted entirely or replaced with the actual app directory/content (or updated symlink target) instead of becoming empty. Please also verify the other similar entries changed in this PR (e.g., hub/apps/flowertune-llm-code, hub/apps/fl-tabular, etc.).

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[panh99]

LGTM!