feat(ops): add managed NE management and batch CLI collection

Introduce workbench operations for multi-vendor NE CRUD/connect-test and Netmiko batch collection with job lifecycle controls, log downloads, and paginated run filters.

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

netx_api/ne_collection_paths.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from .config import settings
+
+
+def collection_data_root() -> Path:
+    root = Path(str(settings.ne_collection_data_dir or "data/ne_collections"))
+    root.mkdir(parents=True, exist_ok=True)
+    return root.resolve()
+
+
+def run_output_dir(job_id: str, run_id: str) -> Path:
+    return collection_data_root() / job_id / run_id
+
+
+def clear_run_output_files(job_id: str, run_id: str) -> None:
+    """Remove prior log files for this run so re-collection overwrites in place."""
+    out_dir = run_output_dir(job_id, run_id).resolve()
+    root = collection_data_root()
+    if not str(out_dir).startswith(str(root)) or not out_dir.is_dir():
+        return
+    for path in out_dir.iterdir():
+        if path.is_file():
+            path.unlink(missing_ok=True)