chore(release): v0.5.1 — security + bug fixes

- security: bump idna 3.11 -> 3.16 (GHSA-65pc-fj4g-8rjx)
- fix(ctrlregen): correct module import paths (#11, @neosun100)
- fix(cli): preserve alpha channel through visible/all/batch (#8, @rlorenzo)
- fix(cli): safer re-exec via -m instead of repr(sys.argv) -c string (#9, @eskibars)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

uv.lock

@@ -2150,7 +2150,7 @@ wheels = [
 
 [[package]]
 name = "remove-ai-watermarks"
-version = "0.5.0"
+version = "0.5.1"
 source = { editable = "." }
 dependencies = [
     { name = "click" },