Jan2026 fixes (#1077)

* fix release script
* fix svgcanvas edge cases
* Update path-actions.js
* add modern js
* update deps
* Update CHANGES.md

tests/unit/namespaces.test.js

@@ -0,0 +1,23 @@
+import { NS, getReverseNS } from '../../packages/svgcanvas/core/namespaces.js'
+
+describe('namespaces', function () {
+  it('exposes common namespace constants', function () {
+    assert.equal(NS.SVG, 'http://www.w3.org/2000/svg')
+    assert.equal(NS.XLINK, 'http://www.w3.org/1999/xlink')
+    assert.equal(NS.XML, 'http://www.w3.org/XML/1998/namespace')
+    assert.equal(NS.XMLNS, 'http://www.w3.org/2000/xmlns/')
+  })
+
+  it('creates a reverse namespace lookup', function () {
+    const reverse = getReverseNS()
+
+    assert.equal(reverse[NS.SVG], 'svg')
+    assert.equal(reverse[NS.XLINK], 'xlink')
+    assert.equal(reverse[NS.SE], 'se')
+    assert.equal(reverse[NS.OI], 'oi')
+    assert.equal(reverse[NS.XML], 'xml')
+    assert.equal(reverse[NS.XMLNS], 'xmlns')
+    assert.equal(reverse[NS.HTML], 'html')
+    assert.equal(reverse[NS.MATH], 'math')
+  })
+})