fix(types): [PKG-FACTORY-01] preserve published factory compatibility

packages/artplayer-proxy-canvas/README.md

@@ -29,14 +29,19 @@ historical `require('artplayer-proxy-canvas').default` refer to the same factory
 
 ## TypeScript
 
-The optional callback and exact `HTMLCanvasElement` return type retain published 1.1.0
-inference. `Option`, `Result`, `Factory` and `MediaCanvas` are exported types. The last is
-an explicit view for code using supported forwarded media members:
+The root and `/legacy` declarations preserve the latest published 1.1.0 factory:
+an optional callback, an exact `HTMLCanvasElement` result, and no required factory
+properties. Ordinary replacement functions remain assignable in both directions.
+`Factory` describes that historical shape. The additive `/runtime` entry uses the same
+JavaScript implementation and describes its readonly `default` self alias with
+`RuntimeFactory`. It also exports an explicit `MediaCanvas` view:
 
 ```ts
-import type { MediaCanvas, Option } from 'artplayer-proxy-canvas'
+import type { MediaCanvas, Option } from 'artplayer-proxy-canvas/runtime'
+import canvas from 'artplayer-proxy-canvas/runtime'
 
 const callback: Option = (context, video) => context.drawImage(video, 0, 0)
+canvas.default(callback)
 const media = art.template.$video as MediaCanvas
 await media.play()
 ```
@@ -48,6 +53,27 @@ Runtime falsy callback arguments retain historical behavior; declarations accept
 optional function, matching the published types. Implementation and test guidance is in
 [ARCHITECTURE.md](ARCHITECTURE.md).
 
+### Older TypeScript consumers
+
+The 1.0.0 declaration used `export =` and required a callback; 1.1.0 changed to
+`export default` and made the callback optional. These conflicting type shapes cannot
+both remain the root factory. Following the approved compatibility policy, the root
+keeps 1.1.0. A 1.0.0 TypeScript `import canvas = require('artplayer-proxy-canvas')`
+consumer that directly calls `canvas(...)` can select the accurate entry instead:
+
+```ts
+import canvas = require('artplayer-proxy-canvas/runtime')
+canvas((context, video) => context.drawImage(video, 0, 0))
+canvas.default()
+```
+
+This works with Node10 resolution even without `esModuleInterop`. Default imports from
+`/runtime` work with interoperability enabled and with native NodeNext ESM. Under
+NodeNext ESM, the root intentionally preserves 1.1.0's historical declaration namespace
+shape (`root.default(...)` after a default import); that declaration shape does not
+describe the actual ESM factory. Use a default import from `/runtime` for accurate ESM
+typing. Existing JavaScript root/legacy calls and distribution paths keep working.
+
 ## Demo
 
 [https://artplayer.org](https://artplayer.org/?libs=./uncompiled/artplayer-proxy-canvas/index.js&example=canvas)