chore(license): migrate to MPL-2.0 (#115)

hyperpolymath · web-flow · commit e982568438ae · 2026-05-26T18:29:14.000Z
## Summary
Migrates this repo's license declaration from `MPL-2.0 (no SPDX header)`
to `MPL-2.0`.

**Rationale:** solo.

## Changes
- LICENSE file replaced with canonical `MPL-2.0` text (including SPDX
header).
- Package metadata updated where present (Cargo.toml, package.json,
deno.json, mix.exs, pyproject.toml).

Part of estate-wide metadata cleanup 2026-05-26.
diff --git a/LICENSE b/LICENSE
@@ -1,3 +1,5 @@
+SPDX-License-Identifier: MPL-2.0
+
 Mozilla Public License Version 2.0
 ==================================
 

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,5 @@`
	`1`	`+SPDX-License-Identifier: MPL-2.0`
	`2`	`+`
`1`	`3`	`Mozilla Public License Version 2.0`
`2`	`4`	`==================================`
`3`	`5`