feat(capability_matrix): add 12 v2 fields to VendorCapabilities

The 7 v1 fields (vision, tool_calling, caching, streaming,
model_discovery, context_window, cost_tracking) plus 2 cost
fields and notes are now extended by 12 v2 fields:

  local, reasoning, structured_output, code_execution,
  web_search, x_search, file_search, mcp_support,
  audio, video, grounding, computer_use

All default to False. Registry entries continue to work
unchanged (backward compatible). t4_1 of Phase 4.

Tests:
- 12 parameterized 'default is False' tests
- 12 parameterized 'round-trip to True' tests
- 3 'local flag' tests: per-model, wildcard fallback,
  vendor isolation
- 3 pre-existing registry tests still pass
- 96/96 vendor+tool+provider+import-isolation tests pass
  (no regressions; +27 new tests this commit)

tests/test_vendor_capabilities.py

@@ -38,3 +38,35 @@ def test_fallback_to_vendor_default():
 def test_unknown_vendor_raises():
  with pytest.raises(KeyError, match='No capabilities registered'):
   get_capabilities('nonexistent_vendor', 'anymodel')
+
+V2_FIELDS: list[str] = [
+ 'local', 'reasoning', 'structured_output', 'code_execution',
+ 'web_search', 'x_search', 'file_search', 'mcp_support',
+ 'audio', 'video', 'grounding', 'computer_use',
+]
+
+@pytest.mark.parametrize('field_name', V2_FIELDS)
+def test_v2_field_default_is_false(field_name: str) -> None:
+ caps = VendorCapabilities(vendor='test', model='m')
+ assert getattr(caps, field_name) is False, f'{field_name} should default to False'
+
+@pytest.mark.parametrize('field_name', V2_FIELDS)
+def test_v2_field_round_trip(field_name: str) -> None:
+ caps = VendorCapabilities(vendor='test', model='m', **{field_name: True})
+ assert getattr(caps, field_name) is True, f'{field_name} should round-trip to True'
+
+def test_v2_local_flag_works_for_local_vendor() -> None:
+ register(VendorCapabilities(vendor='llama', model='llama-local-test-3.1', local=True))
+ caps = get_capabilities('llama', 'llama-local-test-3.1')
+ assert caps.local is True
+
+def test_v2_local_flag_falls_back_to_wildcard() -> None:
+ register(VendorCapabilities(vendor='llama', model='*', local=True))
+ caps = get_capabilities('llama', 'some-unregistered-model-3.1-future')
+ assert caps.local is True
+
+def test_v2_local_flag_does_not_affect_other_vendors() -> None:
+ register(VendorCapabilities(vendor='llama', model='*', local=True))
+ register(VendorCapabilities(vendor='qwen', model='*'))
+ caps = get_capabilities('qwen', 'qwen-turbo')
+ assert caps.local is False