docs: Add guide for updating Rica without rerunning tedana

[eurunuela]

Summary

• Adds docs/updating-rica.md: a dedicated guide explaining how to update the open_rica_report.py that tedana generates without having to rerun tedana
• Adds a concise "Updating Rica Without Rerunning Tedana" section to README.md with links to the full guide
• Registers the new page in mkdocs.yml so it appears in the documentation site navigation

What the guide covers

• Why you might want to update Rica independently (tedana runs are expensive; Rica releases bug fixes and new features separately)
• The simplest path: using the always-up-to-date online app
• Step-by-step: downloading the latest index.html + rica_server.py from a release and dropping them into an existing tedana output folder
• What open_rica_report.py does and why rica_server.py is a drop-in replacement
• Bulk-update recipe for multiple tedana output directories
• Troubleshooting (port conflicts, missing files)

Test plan

• Verify the new docs page renders correctly with MkDocs (mkdocs serve)
• Confirm the README section links resolve correctly
• Check that the new page appears in the site nav under "Updating Rica"

🤖 Generated with Claude Code

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[Copilot]

Pull request overview

This PR adds documentation for updating Rica independently of tedana runs, and also introduces runtime changes to improve large-NIfTI handling and local-server file discovery.

Changes:

• Add a new MkDocs page plus README section describing how to update index.html/rica_server.py in existing tedana outputs.
• Update the app to optionally load NIfTI data via URL (including extracting TR from a small header slice / HTTP Range request) to better support very large files.
• Update rica_server.py file discovery patterns/filters (including registry.json) to improve auto-discovery from tedana output directories.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/utils/niftiUtils.js	Adjust gzip header decompression flow to avoid deadlock with large inputs.
src/index.js	Add niftiUrl state and plumb it into major tabs.
src/Tree/DecisionTreeTab.js	Pass niftiUrl through to the Decision Tree view.
src/Tree/DecisionTree.js	Gate BrainViewer rendering based on NIfTI buffer-or-URL availability.
src/PopUps/IntroPopUp.js	Extract TR from header slice/Range request; set niftiUrl and attempt full buffer load with fallback.
src/Plots/Plots.js	Update interactive view gating and pass niftiUrl to BrainViewer.
src/Plots/BrainViewer.js	Support loading the stat map from URL (prefer URL over Blob) and update cleanup logic.
scripts/rica_server.py	Add registry.json and refine _components.nii.gz discovery filtering.
mkdocs.yml	Register the new “Updating Rica” page in site navigation.
docs/updating-rica.md	Add a new guide page describing how to update Rica without rerunning tedana.
README.md	Add a concise “Updating Rica Without Rerunning Tedana” section linking to the full guide.
claude-progress.txt	Add session notes documenting the changes made.

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