chore(license): Switch from GPL-3.0-or-later to dual MIT/Apache-2.0

[rmems]

Summary

Switch engram-parser to dual MIT / Apache-2.0 for org consistency and adoption.

Master: Limen-Neural/neuromod#19

Checklist

• LICENSE-MIT + LICENSE-APACHE-2.0
• Cargo.toml license field (license = "MIT OR Apache-2.0", authors, rust-version = "1.87")
• README + badge
• SPDX headers in sources (src/, tests/)
• Changelog (CHANGELOG.md)
• Optional REUSE (deferred)

Implementation notes

Implemented in PR #6 (issues/#2,#3,#4, commit 71d993d):

• LICENSE-MIT, LICENSE-APACHE-2.0 added
• GPL-3.0-or-later removed from Cargo.toml
• README license section + badge updated
• Tensor API change documented under [Unreleased] → Changed

References

• neuromod#19
• kinetic-signals#7
• cortex-tensor (sibling in hybrid stack)

Labels

chore, legal, documentation

[rmems]

Addressed in PR #6 — #6

• LICENSE-MIT + LICENSE-APACHE-2.0 added
• Cargo.toml updated (license = "MIT OR Apache-2.0", authors, rust-version)
• SPDX headers on all src/ + tests/ files
• CHANGELOG.md added with license migration note
• README license badge + section updated

REUSE tooling deferred. Issue will auto-close when PR #6 merges (Closes #3).

— Grok Build agent / Composer 2.5 Fast