Add OSS ability-video upload helpers and ignore runtime artifacts.

Commit _oss_*.py ops scripts alongside existing _cf_* helpers; gitignore bucket marker and upload PID.

Co-authored-by: Cursor <cursoragent@cursor.com>

_oss_launch_upload.py

@@ -0,0 +1,45 @@
+"""Launch OSS upload as a detached process inheriting current env (keyzoo inject)."""
+
+from __future__ import annotations
+
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parent
+LOG = ROOT / "oss_upload.log"
+ERR = ROOT / "oss_upload_err.log"
+PID = ROOT / "oss_upload.pid"
+
+
+def main() -> None:
+    if not os.environ.get("KEYZOO_ASSET_SECRET_ACCESSKEY_SECRET") and not os.environ.get(
+        "OSS_ACCESS_KEY_SECRET"
+    ):
+        raise SystemExit("missing AccessKey secret in env")
+    # Clear previous logs.
+    for p in (LOG, ERR):
+        if p.exists():
+            p.unlink()
+    creationflags = 0
+    if sys.platform == "win32":
+        creationflags = subprocess.CREATE_NEW_PROCESS_GROUP | subprocess.DETACHED_PROCESS
+    out = open(LOG, "w", encoding="utf-8")
+    err = open(ERR, "w", encoding="utf-8")
+    proc = subprocess.Popen(
+        [sys.executable, str(ROOT / "_oss_ability_videos.py"), "upload"],
+        cwd=str(ROOT),
+        stdout=out,
+        stderr=err,
+        env=os.environ.copy(),
+        creationflags=creationflags,
+        close_fds=True,
+    )
+    PID.write_text(str(proc.pid), encoding="utf-8")
+    print(f"started_pid={proc.pid}")
+    print(f"log={LOG}")
+
+
+if __name__ == "__main__":
+    main()