Initial commit: CinemaTrailers4Jellyfins plugin

Adapted from Trailers4Jellyfin: keeps TMDB/YouTube trailer downloading,
the scheduled task, language/source/date filters, and trailer rotation,
but drops cinema-mode/IIntroProvider entirely. Each trailer now ships in
its own fake-movie folder (placeholder video + locked NFO + trailer) for
use with a Cinema Mode / trailer pre-roll plugin.

update_manifest.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+"""
+Updates manifest.json with a new version entry after a release build.
+Usage: python3 update_manifest.py <version> <checksum>
+  version  - e.g. 1.0.0.0
+  checksum - MD5 hex of the release zip
+"""
+from __future__ import annotations
+
+import json
+import sys
+import datetime
+import yaml
+
+
+MANIFEST_FILE = "manifest.json"
+BUILD_YAML = "build.yaml"
+REPO = "mvezina/CinemaTrailers4Jellyfins"
+REPO_BASE_URL = "https://www.git.quarantinedstudio.com/mvezina/CinemaTrailers4Jellyfins"
+ZIP_PREFIX = "cinematrailers4jellyfins"
+
+
+def main() -> None:
+    if len(sys.argv) != 3:
+        print(f"Usage: {sys.argv[0]} <version> <checksum>")
+        sys.exit(1)
+
+    version = sys.argv[1]
+    checksum = sys.argv[2]
+
+    with open(BUILD_YAML) as f:
+        build = yaml.safe_load(f)
+
+    target_abi = build["targetAbi"]
+    changelog = "".join(f"- {item}\n" for item in build.get("changelog", []))
+    source_url = f"{REPO_BASE_URL}/releases/download/v{version}/{ZIP_PREFIX}_{version}.zip"
+    timestamp = datetime.datetime.utcnow().isoformat(timespec="seconds") + "Z"
+
+    new_entry = {
+        "checksum": checksum,
+        "changelog": changelog,
+        "targetAbi": target_abi,
+        "sourceUrl": source_url,
+        "timestamp": timestamp,
+        "version": version,
+    }
+
+    with open(MANIFEST_FILE) as f:
+        manifest = json.load(f)
+
+    existing_versions = [v["version"] for v in manifest[0]["versions"]]
+    if version in existing_versions:
+        print(f"Version {version} already exists in manifest. Nothing to do.")
+        return
+
+    # Newest version first
+    manifest[0]["versions"] = [new_entry] + manifest[0]["versions"]
+
+    with open(MANIFEST_FILE, "w") as f:
+        json.dump(manifest, f, indent=4)
+        f.write("\n")
+
+    print(f"manifest.json updated with version {version}")
+
+
+if __name__ == "__main__":
+    main()