Update Feather h200 training runtime image

BUILD_STAMP.txt

@@ -1 +1 @@
-git=c51880dbba451428c88c3244a0bf311995efbfbc time=2026-05-08T14:55:54Z purpose=h200-htm-micro-canary pathfix=c51880db
+git=cab0c6eeee8b3d69f3627bfbf80efee5bf9e8eba time=2026-05-08T15:05:02Z purpose=h200-htm-micro-canary importfix=cab0c6ee

overlay/scripts/htm_gpu_micro_canary.py

@@ -11,10 +11,27 @@ from __future__ import annotations
 import argparse
 import json
 import os
-import random
+import sys
 import time
+import traceback
+from pathlib import Path
 from typing import Any
 
+import torch
+
+
+def ensure_repo_on_path() -> None:
+    """Make overlay package imports work from both /app/scripts and repo-root runs."""
+    candidates = [
+        Path('/workspace/feather'),
+        Path(__file__).resolve().parents[1] if len(Path(__file__).resolve().parents) > 1 else None,
+    ]
+    for candidate in candidates:
+        if candidate and (candidate / 'subsystems' / 'htm.py').exists():
+            candidate_s = str(candidate)
+            if candidate_s not in sys.path:
+                sys.path.insert(0, candidate_s)
+            return
 
 def build_htm_env(mode: str) -> dict[str, str]:
     """Return env overrides for the requested HTM diagnostic mode."""
@@ -86,6 +103,7 @@ def main(argv: list[str] | None = None) -> int:
         return 0
 
     import torch
+    ensure_repo_on_path()
     from subsystems.htm import HTMLayer
 
     emit(