feat: update external URLs and references for openforis/pysepal (Phase 3)

[dfguerrerom]

Summary

• Update all GitHub URLs from 12rambau/sepal_ui to openforis/pysepal across docs, config, templates, and source
• Update PyPI badge/URLs from sepal-ui to pysepal
• Update conda-forge badge/URLs from sepal-ui to pysepal
• Update all remaining docstrings, comments, and print statements from "sepal-ui" to "pysepal"
• Change deprecation notices from future tense ("will be renamed") to past tense ("has been renamed")

What is deliberately NOT changed

• ReadTheDocs URLs (sepal-ui.readthedocs.io) — deferred to chore: migrate ReadTheDocs from sepal-ui to pysepal #976
• Config file path (~/.sepal-ui-config) — deferred to chore: deprecate ~/.sepal-ui-config file #977
• Crowdin project URL — stays as sepal-ui
• Logger namespace (sepalui) — permanent
• CSS class (.sepal-ui-script) — permanent
• sepal_ui/ shim directory — backward compatibility

Post-merge actions

1. GitHub: rename repo openforis/sepal_ui → openforis/pysepal (Settings → General)
2. PyPI: next release will auto-publish as pysepal (distribution name already set in Phase 2)
3. Conda-forge: submit feedstock rename

Test plan

• All 273 tests pass (nox -s test)
• All pre-commit hooks pass
• rg "12rambau/sepal_ui" returns no matches (outside CHANGELOG/shim)
• rg "pypi.org/project/sepal-ui" returns no matches
• rg "conda-forge/sepal-ui" returns no matches

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.92%. Comparing base (0318225) to head (191eca7).
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #978      +/-   ##
==========================================
- Coverage   79.99%   79.92%   -0.08%     
==========================================
  Files          56       56              
  Lines        5544     5544              
==========================================
- Hits         4435     4431       -4     
- Misses       1109     1113       +4     

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[Copilot]

Pull request overview

This PR is part of the sepal-ui → pysepal transition work, updating external references (GitHub/PyPI/conda-forge URLs, badges, and textual mentions) across the codebase, templates, and documentation to align with the new canonical repository/package naming.

Changes:

• Repoint GitHub links from 12rambau/sepal_ui to openforis/pysepal across docs, templates, CSS comments, and package metadata.
• Update PyPI/conda-forge badges and URLs from sepal-ui to pysepal.
• Update deprecation messaging to past tense (“has been renamed”) and refresh references in package/module docstrings and CLI output.

Reviewed changes

Copilot reviewed 26 out of 30 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pysepal/templates/panel_app/ui.ipynb	Updates template drawer links (code/wiki/issues) to the new org/repo.
pysepal/templates/panel_app/doc/en.rst	Updates template “open an issue” URL to the new repo.
pysepal/templates/map_app/ui.ipynb	Updates template links (code/wiki/issues) to the new org/repo.
pysepal/templates/map_app/doc/en.rst	Updates template “open an issue” URL to the new repo.
pysepal/solara/common/assets/custom.css	Updates comment text and issue link to the new repo.
pysepal/sepalwidgets/tile.py	Updates raw GitHub asset URL to new org/repo and new package path.
pysepal/sepalwidgets/__init__.py	Updates package docstring references from sepal-ui → pysepal.
pysepal/scripts/__init__.py	Updates docstring references from sepal-ui → pysepal.
pysepal/planetapi/__init__.py	Updates docstring references from sepal-ui → pysepal.
pysepal/message/__init__.py	Updates docstring references from sepal-ui → pysepal.
pysepal/mapping/__init__.py	Updates docstring references from sepal-ui → pysepal.
pysepal/frontend/styles.py	Updates docstring/comment references from sepal_ui → pysepal (text only).
pysepal/frontend/css/custom.css	Updates comment text and issue link to the new repo.
pysepal/bin/module_theme.py	Updates help text and CLI output strings to pysepal naming.
pysepal/bin/module_l10n.py	Updates help text and CLI output strings to pysepal naming.
pysepal/bin/module_factory.py	Updates hardcoded template URL replacement target to the new repo.
pysepal/bin/module_deploy.py	Updates docstring and CLI output strings to pysepal naming.
pysepal/aoi/__init__.py	Updates docstring references from sepal-ui → pysepal.
pyproject.toml	Updates project.urls Homepage/Download to the new repo.
docs/source/tutorials/translate-app.rst	Updates issue tracker URL to the new repo.
docs/source/tutorials/solara.rst	Updates clone/path examples from sepal_ui to pysepal repo naming.
docs/source/tutorials/send-to-sepal.rst	Updates pip VCS install example to new repo.
docs/source/tutorials/send-to-heroku.rst	Updates template repo + issue/issue links to new org/repo where applicable.
docs/source/tutorials/create-module.rst	Updates template repository links to the new org.
docs/source/start/installation.rst	Updates deprecation note and source install URLs to new repo.
docs/source/start/index.rst	Updates deprecation note and demo image link to new repo.
docs/source/index.rst	Updates title/deprecation note and demo image link to new repo.
docs/source/conf.py	Updates theme GitHub/PyPI links and Sphinx html_context GitHub repo/user.
README.rst	Updates title/deprecation note, badges, and image URLs to pysepal naming.
CONTRIBUTING.rst	Updates clone instructions and doc/image links to the new repo and package name.

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