chore: replace LICENSE with Apache-2.0; add NOTICE

[tilo-14]

Replaces the root LICENSE (which contained GPL-3.0 text inherited from
the Light Protocol v1 codebase) with the standard Apache-2.0 license
text. Adds a NOTICE file explaining the historical inconsistency and
acknowledging third-party components.

Also normalizes per-crate licensing for consistency:

• Flips three crates from MIT to Apache-2.0 (program-test,
  token-interface, compressible)
• Adds license = "Apache-2.0" to Cargo.toml files in forester, xtask,
  and the program-tests/sdk-tests test crates that were missing the
  field

prover/server/ (Worldcoin MIT) and program-libs/aligned-sized/
(Light Protocol Labs MIT) keep their per-directory LICENSE files; both
are acknowledged in NOTICE.

This brings the root in line with what the published Cargo crates and
npm packages already declare.

---

Summary by CodeRabbit

• Chores
  • Updated project license metadata across multiple packages.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: a8588b86-c9b8-4ac2-877c-dd7408b206c2

📥 Commits

Reviewing files that changed from the base of the PR and between 0687860 and b793640.

⛔ Files ignored due to path filters (21)

• LICENSE is excluded by !LICENSE and included by none
• NOTICE is excluded by none and included by none
• program-tests/account-compression-test/Cargo.toml is excluded by none and included by none
• program-tests/compressed-token-test/Cargo.toml is excluded by none and included by none
• program-tests/e2e-test/Cargo.toml is excluded by none and included by none
• program-tests/registry-test/Cargo.toml is excluded by none and included by none
• program-tests/system-test/Cargo.toml is excluded by none and included by none
• sdk-tests/anchor-manual-test/Cargo.toml is excluded by none and included by none
• sdk-tests/anchor-semi-manual-test/Cargo.toml is excluded by none and included by none
• sdk-tests/csdk-anchor-full-derived-test-sdk/Cargo.toml is excluded by none and included by none
• sdk-tests/csdk-anchor-full-derived-test/Cargo.toml is excluded by none and included by none
• sdk-tests/pinocchio-light-program-test/Cargo.toml is excluded by none and included by none
• sdk-tests/pinocchio-manual-test/Cargo.toml is excluded by none and included by none
• sdk-tests/sdk-light-token-pinocchio/Cargo.toml is excluded by none and included by none
• sdk-tests/sdk-light-token-test/Cargo.toml is excluded by none and included by none
• sdk-tests/single-account-loader-test/Cargo.toml is excluded by none and included by none
• sdk-tests/single-ata-test/Cargo.toml is excluded by none and included by none
• sdk-tests/single-mint-test/Cargo.toml is excluded by none and included by none
• sdk-tests/single-pda-test/Cargo.toml is excluded by none and included by none
• sdk-tests/single-token-test/Cargo.toml is excluded by none and included by none
• xtask/Cargo.toml is excluded by none and included by none

📒 Files selected for processing (4)

• forester/Cargo.toml
• program-libs/compressible/Cargo.toml
• program-libs/token-interface/Cargo.toml
• sdk-libs/program-test/Cargo.toml

---

📝 Walkthrough

Walkthrough

This PR harmonizes the license metadata across four Rust workspace crates. The forester crate gains an Apache-2.0 license declaration, while compressible, token-interface, and program-test crates migrate their license identifiers from MIT to Apache-2.0.

Changes

License Standardization

Layer / File(s)	Summary
Package Licenses forester/Cargo.toml, program-libs/compressible/Cargo.toml, program-libs/token-interface/Cargo.toml, sdk-libs/program-test/Cargo.toml	License fields in [package] metadata unified to Apache-2.0 across all four crates.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

📜 Apache's banner flies so true,
Four crates align in legal view,
MIT → 2.0, the licenses grow,
Unified clarity steals the show! ✨

🚥 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 PR title accurately describes the main objective: replacing the repository LICENSE with Apache-2.0 and adding a NOTICE file, which aligns with the changeset.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/license-apache2

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.