Add mmdet runtime deps + fix wheel cache path naming

- ModuleNotFoundError: terminaltables — add terminaltables, six, tensorboard
(mmdet 2.25.3 runtime deps trimmed earlier).
- Cached wheel failed to install: encoding torch/cuda in the wheel filename
violated PEP 427 ("Invalid build number"). Keep a valid wheel filename and
put the torch/cuda/python cache key in the Hub path instead.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app.py

@@ -86,16 +86,18 @@ def _ensure_mmcv():
     tver = torch.__version__
     cuver = (torch.version.cuda or "none")
     pytag = f"cp{sys.version_info.major}{sys.version_info.minor}"
-    wheel_name = (f"mmcv_full-1.7.2-torch{tver.replace('+', '_')}-"
-                  f"cu{cuver.replace('.', '')}-{pytag}-linux_x86_64.whl")
+    # The wheel FILENAME must stay PEP 427-valid for pip to install it; encode
+    # the torch/cuda/python cache key in the Hub PATH instead.
+    wheel_basename = f"mmcv_full-1.7.2-{pytag}-{pytag}-linux_x86_64.whl"
+    cache_key = f"torch{tver.replace('+', '_')}-cu{cuver.replace('.', '')}-{pytag}"
+    cache_path = f"mmcv_wheels/{cache_key}/{wheel_basename}"
     token = os.environ.get("HF_TOKEN")
-    print(f"[bootstrap] torch={tver} cuda={cuver}; cache wheel={wheel_name}",
-          flush=True)
+    print(f"[bootstrap] torch={tver} cuda={cuver}; cache={cache_path}", flush=True)
 
     # 1) Try a cached prebuilt wheel from the Hub.
     try:
         from huggingface_hub import hf_hub_download
-        whl = hf_hub_download(repo_id=MMCV_CACHE_REPO, filename=wheel_name,
+        whl = hf_hub_download(repo_id=MMCV_CACHE_REPO, filename=cache_path,
                               token=token)
         run([sys.executable, "-m", "pip", "install", whl])
         if have_mmcv():
@@ -126,10 +128,10 @@ def _ensure_mmcv():
     try:
         if token:
             from huggingface_hub import upload_file
-            upload_file(path_or_fileobj=built, path_in_repo=wheel_name,
+            upload_file(path_or_fileobj=built, path_in_repo=cache_path,
                         repo_id=MMCV_CACHE_REPO, token=token,
                         commit_message="cache mmcv-full wheel")
-            print(f"[bootstrap] cached wheel -> {MMCV_CACHE_REPO}/{wheel_name}",
+            print(f"[bootstrap] cached wheel -> {MMCV_CACHE_REPO}/{cache_path}",
                   flush=True)
     except Exception as e:
         print(f"[bootstrap] wheel cache upload skipped ({e!r})", flush=True)

requirements.txt

@@ -22,6 +22,10 @@ matplotlib
 pillow
 fvcore
 einops
+# mmdet 2.25.3 runtime deps
+terminaltables
+six
+tensorboard
 
 # Gradio / HF
 spaces