chore: add the AGPL-3.0 LICENSE this repo was missing

[topkoa]

The repo is unlicensed

feedBack-demucs-server has no LICENSE file. GitHub reports its license as none, while every other repo in the org is AGPL-3.0:

Repo	License
feedBack	AGPL-3.0
feedBack-plugin-stem-splitter	AGPL-3.0
feedBack-demucs-server	none

That isn't a neutral default. With no license, the legal default is all rights reserved — nobody can redistribute or modify it. That's an odd footing for a server that is bundled with, documented by, and depended on by an AGPL application, and which we now publish as a public container image.

Why now

#4 proposes stamping org.opencontainers.image.licenses="MIT" onto the image. Merging that would have a public artifact assert a license nobody chose, inconsistent with the rest of the project. Better to settle the question in the source than to have it decided by an image label.

What this does

• Adds LICENSE — byte-identical to feedBack's AGPL-3.0 (verified with diff).
• Adds org.opencontainers.image.licenses="AGPL-3.0-only" to the Dockerfile, so the published image declares the same license as its source.
• Adds a ## License section to the README, worded the same way the app and plugin repos word theirs.

No code changes.

Note

I'm not a lawyer and this is a judgment call about project intent, not legal advice — I picked AGPL-3.0-only because it's what every sibling repo uses and because the plugin/app that consume this are AGPL. If the intent was ever for this server to be permissively licensed (it's a standalone service, so that's a coherent position), say so and close this — but then it should be a deliberate MIT/Apache LICENSE file, not an unlicensed repo with an MIT label on the image.

Summary by CodeRabbit

• Documentation
  • Added the GNU Affero General Public License (AGPL-3.0-only) to the project.
  • Documented the licensing terms in the README, covering the server and its plugins.
  • Added license metadata to the container image.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 8e067de1-6319-4527-ae09-308e4b1397f1

📥 Commits

Reviewing files that changed from the base of the PR and between 4c49c33 and 9ac8366.

📒 Files selected for processing (3)

• Dockerfile
• LICENSE
• README.md

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📝 Walkthrough

Walkthrough

The project now includes the complete AGPL-3.0-only license text, declares the license in Docker image metadata, and documents its application to the server and calling plugins in the README.

Changes

Project licensing

Layer / File(s)	Summary
Add AGPL license text LICENSE	Adds the complete GNU Affero General Public License Version 3 text and application instructions.
Propagate license declarations Dockerfile, README.md	Adds the AGPL-3.0-only image label and README license section.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: adding the missing AGPL-3.0 license file to the repository.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/agpl-license

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