Fix to transfer

gnommo/transfer.py

@@ -18,6 +18,15 @@ Design:
 Sync model: move everything, exclude a small denylist. The exclusions are large
 derived artifacts each side regenerates or ships on its own (rendered output,
 preprocessed segments, downscales, chunk scratch), so they never travel over SSH.
+
+Master = the machine's local tree. The PROJECT sync runs with rsync --delete, so a
+file deleted locally and then `up`'d is removed on the server, and `down` mirrors the
+server onto the local tree (deletions included). The Mac is the intended master: it
+`up`s, the rig `down`s. Excluded paths are PROTECTED from --delete (rsync does not
+touch excluded files on the receiver), so rig-only artifacts — above all the big
+`*_processed.*` preprocess outputs — are never deleted by a mirror from the Mac.
+Shared assets are NOT --deleted (a cross-project library; blind deletion could wipe
+pexels downloaded on the other side), so that pass stays purely additive.
 """
 
 import json
@@ -52,6 +61,7 @@ _SYNC_EXCLUDES = [
     "media/narration/proxy/",
     "media/videos/proxy/",
     "**/chunks/",
+    "*_processed.*",  # preprocess outputs — rig-only, never transfer OR --delete them
     "*.tmp",
     ".*",       # rsync in-progress temp files (.filename.XXXXXX) and .DS_Store
 ]
@@ -147,9 +157,11 @@ def cmd_up(project_path: Path, verbose: bool, dry_run: bool) -> int:
     shared_root = _find_shared_assets_root(project_path)
     remote_shared = f"{server['path']}/shared_assets"
 
-    # Pass 1: project files — whole tree, denylist excludes.
+    # Pass 1: project files — whole tree, denylist excludes. --delete mirrors the local
+    # (master) tree onto the server: files deleted locally are removed there too.
+    # Excluded paths (processed outputs, out/, chunks, …) are protected from deletion.
     rsync_cmd = [
-        "rsync", "-av", "--progress",
+        "rsync", "-av", "--progress", "--delete",
         "-e", f"ssh -p {server['port']}",
         *[f"--exclude={p}" for p in _SYNC_EXCLUDES],
         f"{project_path}/",
@@ -228,8 +240,12 @@ def cmd_down(project_path: Path, verbose: bool, dry_run: bool) -> int:
 
     project_path.mkdir(parents=True, exist_ok=True)
 
+    # --delete mirrors the server (which the master `up`'d) onto this local tree:
+    # files gone from the server are removed here too. Excluded paths — above all the
+    # rig-only *_processed.* outputs — are protected, so a `down` on the rig never
+    # deletes its own preprocess artifacts.
     rsync_cmd = [
-        "rsync", "-av", "--progress",
+        "rsync", "-av", "--progress", "--delete",
         "-e", f"ssh -p {server['port']}",
         *[f"--exclude={p}" for p in _SYNC_EXCLUDES],
         f"{server['user']}@{server['host']}:{remote_project}/",