chore(release): v0.5.3 — detect China TC260 AIGC label (Doubao)

- feat(identify): detect the China TC260 <TC260:AIGC> XMP label (Doubao
  and other China-served generators); reports platform + ContentProducer.
  Removal already strips it via the existing metadata cleaner.

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

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "remove-ai-watermarks"
-version = "0.5.2"
+version = "0.5.3"
 description = "Remove visible and invisible AI watermarks from images (Gemini / Nano Banana, ChatGPT, Stable Diffusion)"
 readme = "README.md"
 requires-python = ">=3.10"

src/remove_ai_watermarks/__init__.py

@@ -1,3 +1,3 @@
 """Remove-AI-Watermarks: Unified tool for removing visible and invisible AI watermarks."""
 
-__version__ = "0.5.2"
+__version__ = "0.5.3"

uv.lock

@@ -2150,7 +2150,7 @@ wheels = [
 
 [[package]]
 name = "remove-ai-watermarks"
-version = "0.5.2"
+version = "0.5.3"
 source = { editable = "." }
 dependencies = [
     { name = "click" },