test(memory): skip decorators on offline model misses (#2020)

## Description

Current `main` already has the shared `external_model_skip_reason`
helper and pytest hooks for transient/offline model dependency failures.
This follow-up applies the same classifier to the async memory
integration test decorators in `test_core_operations.py` and
`test_easy.py`, so decorated tests also skip offline Hugging Face
cache-miss errors instead of only `httpx.ReadTimeout`.

Supersedes #1017 with a clean branch based on current `main`.

## Type of Change

- [x] Bug fix (non-breaking change that fixes an issue)

## Changes Made

- Updated `network_timeout_handler` in
`tests/test_memory/test_core_operations.py` to call
`external_model_skip_reason` and re-raise unrelated exceptions.
- Updated `network_timeout_handler` in `tests/test_memory/test_easy.py`
the same way.
- Removed now-unnecessary direct `httpx` imports from those files.

## Testing

- [x] Unit tests pass (`pytest`)
- [x] Linting passes (`ruff check`)
- [x] Type checking passes (`mypy` via commit hook)
- [x] New tests added for new functionality

### Test Output

```text
$ python -m pytest tests/test_memory/test_skip_helpers.py -q
4 passed in 0.12s

$ python -m ruff check tests/test_memory/test_core_operations.py tests/test_memory/test_easy.py tests/test_memory/test_skip_helpers.py
All checks passed!

$ python -m ruff format --check tests/test_memory/test_core_operations.py tests/test_memory/test_easy.py tests/test_memory/test_skip_helpers.py
3 files already formatted

$ git commit -m "test(memory): skip decorators on offline model misses"
Sync plugin versions.....................................................Passed
check for merge conflicts................................................Passed
ruff.....................................................................Passed
ruff-format..............................................................Passed
mypy.....................................................................Passed
```

## Real Behavior Proof

- Environment: Windows, Python 3.13.13, local `C:\git\headroom`
checkout.
- Exact command / steps: ran `python -m pytest
tests/test_memory/test_skip_helpers.py -q` against the skip classifier
used by these decorators.
- Observed result: `4 passed`, covering `httpx.ReadTimeout`,
`LocalEntryNotFoundError`, offline Hugging Face `OSError`, and unrelated
errors.
- Not tested: live memory integration against an intentionally missing
Hugging Face cache.

## Review Readiness

- [x] I have performed a self-review
- [x] This PR is ready for human review

tests/test_memory/test_core_operations.py

@@ -23,13 +23,13 @@ import functools
 import tempfile
 from pathlib import Path
 
-import httpx
 import pytest
 
 from headroom.memory.config import MemoryConfig
 from headroom.memory.core import HierarchicalMemory
 from headroom.memory.models import Memory, ScopeLevel
 from headroom.memory.ports import MemoryFilter
+from tests._skip_helpers import external_model_skip_reason
 
 # Check if hnswlib is available (HierarchicalMemory requires it)
 try:
@@ -43,14 +43,17 @@ pytestmark = pytest.mark.skipif(not HNSW_AVAILABLE, reason="hnswlib not availabl
 
 
 def network_timeout_handler(func):
-    """Decorator to skip tests on network timeouts (flaky CI)."""
+    """Decorator to skip tests on transient/offline model dependency failures."""
 
     @functools.wraps(func)
     async def wrapper(*args, **kwargs):
         try:
             return await func(*args, **kwargs)
-        except httpx.ReadTimeout:
-            pytest.skip("Skipped due to network timeout (flaky CI)")
+        except Exception as exc:
+            reason = external_model_skip_reason(exc)
+            if reason is not None:
+                pytest.skip(reason)
+            raise
 
     return wrapper
 

tests/test_memory/test_easy.py

@@ -21,10 +21,10 @@ os.environ["TOKENIZERS_PARALLELISM"] = "false"
 import tempfile
 from pathlib import Path
 
-import httpx
 import pytest
 
 from headroom.memory.easy import Memory, MemoryResult
+from tests._skip_helpers import external_model_skip_reason
 
 # Check if hnswlib is available (local backend requires it)
 try:
@@ -38,15 +38,18 @@ pytestmark = pytest.mark.skipif(not HNSW_AVAILABLE, reason="hnswlib not availabl
 
 
 def network_timeout_handler(func):
-    """Decorator to skip tests on network timeouts (flaky CI)."""
+    """Decorator to skip tests on transient/offline model dependency failures."""
     import functools
 
     @functools.wraps(func)
     async def wrapper(*args, **kwargs):
         try:
             return await func(*args, **kwargs)
-        except httpx.ReadTimeout:
-            pytest.skip("Skipped due to network timeout (flaky CI)")
+        except Exception as exc:
+            reason = external_model_skip_reason(exc)
+            if reason is not None:
+                pytest.skip(reason)
+            raise
 
     return wrapper