feat: add Python 3.14 support

- pyproject.toml: add Python 3.14 classifier (requires-python stays >=3.10)

- test.yml: add 3.14 to the unit test matrix across ubuntu/windows/macos

- README.md/README.CN.md: document supported range as Python 3.10-3.14

- Verified on CPython 3.14.0: 295 passed, ruff and mypy clean

Author: Masterain98

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python: ["3.10", "3.11", "3.12", "3.13"]
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
       - uses: actions/checkout@v7
         with:

README.CN.md

@@ -20,7 +20,7 @@ PlexMuxy 用于将视频、外挂音频、ASS/SSA 字幕和字体安全地批量
 
 ## 安装
 
-需要 Python 3.10–3.13 和 [MKVToolNix](https://mkvtoolnix.download/)。请把 `mkvmerge` 加入 `PATH`，或配置 `mkvmerge.path`。
+需要 Python 3.10–3.14 和 [MKVToolNix](https://mkvtoolnix.download/)。请把 `mkvmerge` 加入 `PATH`，或配置 `mkvmerge.path`。
 
 ```bash
 pip install plexmuxy

README.md

@@ -20,7 +20,7 @@ PlexMuxy safely batches video, external audio, ASS/SSA subtitles, and font attac
 
 ## Install
 
-PlexMuxy requires Python 3.10–3.13 and [MKVToolNix](https://mkvtoolnix.download/). Ensure `mkvmerge` is on `PATH`, or set `mkvmerge.path` in the config.
+PlexMuxy requires Python 3.10–3.14 and [MKVToolNix](https://mkvtoolnix.download/). Ensure `mkvmerge` is on `PATH`, or set `mkvmerge.path` in the config.
 
 ```bash
 pip install plexmuxy

pyproject.toml

@@ -8,6 +8,22 @@ dynamic = ["version"]
 description = "Batch mux media files with external audio, subtitles, and fonts for Plex."
 readme = "README.md"
 requires-python = ">=3.10"
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Environment :: Console",
+  "Intended Audience :: End Users/Desktop",
+  "License :: OSI Approved :: MIT License",
+  "Operating System :: Microsoft :: Windows",
+  "Operating System :: POSIX :: Linux",
+  "Operating System :: MacOS",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
+  "Topic :: Multimedia :: Video",
+]
 dependencies = [
   "patool>=2.2",
   "py7zr>=0.21",