refactor: remove high-confidence redundant code

src/opencode_a2a/auth.py

@@ -67,12 +67,6 @@ def build_static_auth_credentials(settings: Settings) -> tuple[StaticAuthCredent
     return tuple(credentials)
 
 
-def has_configured_auth_scheme(settings: Settings, scheme: str) -> bool:
-    return any(
-        credential.auth_scheme == scheme for credential in build_static_auth_credentials(settings)
-    )
-
-
 def authenticate_static_credential(
     *,
     credentials: tuple[StaticAuthCredential, ...],

src/opencode_a2a/extension_negotiation.py

@@ -12,30 +12,13 @@
 from .a2a_utils import clone_proto
 from .contracts.extensions import (
     INTERRUPT_CALLBACK_EXTENSION_URI,
-    INTERRUPT_CALLBACK_METHODS,
-    INTERRUPT_RECOVERY_EXTENSION_URI,
-    INTERRUPT_RECOVERY_METHODS,
     MODEL_SELECTION_EXTENSION_URI,
-    PROVIDER_DISCOVERY_EXTENSION_URI,
-    PROVIDER_DISCOVERY_METHODS,
     SESSION_BINDING_EXTENSION_URI,
-    SESSION_MANAGEMENT_EXTENSION_URI,
-    SESSION_METHODS,
     STREAMING_EXTENSION_URI,
-    WORKSPACE_CONTROL_EXTENSION_URI,
-    WORKSPACE_CONTROL_METHODS,
 )
 
 _STREAMING_SHARED_METADATA_KEYS = ("stream", "progress", "usage")
 
-JSONRPC_EXTENSION_URI_BY_METHOD: dict[str, str] = {
-    **{method: SESSION_MANAGEMENT_EXTENSION_URI for method in SESSION_METHODS.values()},
-    **{method: PROVIDER_DISCOVERY_EXTENSION_URI for method in PROVIDER_DISCOVERY_METHODS.values()},
-    **{method: INTERRUPT_RECOVERY_EXTENSION_URI for method in INTERRUPT_RECOVERY_METHODS.values()},
-    **{method: INTERRUPT_CALLBACK_EXTENSION_URI for method in INTERRUPT_CALLBACK_METHODS.values()},
-    **{method: WORKSPACE_CONTROL_EXTENSION_URI for method in WORKSPACE_CONTROL_METHODS.values()},
-}
-
 
 @dataclass(frozen=True)
 class ExtensionRequirement:

src/opencode_a2a/jsonrpc/dispatch.py

@@ -91,9 +91,7 @@ class ExtensionMethodSpec:
 class ExtensionMethodRegistry:
     def __init__(self, specs: Iterable[ExtensionMethodSpec]) -> None:
         method_map: dict[str, ExtensionMethodSpec] = {}
-        normalized_specs: list[ExtensionMethodSpec] = []
         for spec in specs:
-            normalized_specs.append(spec)
             for method in spec.methods:
                 existing = method_map.get(method)
                 if existing is not None:
@@ -102,13 +100,8 @@ def __init__(self, specs: Iterable[ExtensionMethodSpec]) -> None:
                         f"{existing.name!r} and {spec.name!r}"
                     )
                 method_map[method] = spec
-        self._specs = tuple(normalized_specs)
         self._method_map = method_map
 
-    @property
-    def specs(self) -> tuple[ExtensionMethodSpec, ...]:
-        return self._specs
-
     def methods(self) -> frozenset[str]:
         return frozenset(self._method_map)
 

src/opencode_a2a/server/agent_card.py

@@ -13,7 +13,7 @@
     SecurityScheme,
 )
 
-from ..auth import has_configured_auth_scheme
+from ..auth import build_static_auth_credentials
 from ..config import Settings
 from ..contracts.extensions import (
     AUTHENTICATED_ONLY_EXTENSION_URIS,
@@ -483,7 +483,10 @@ def build_agent_card(
     runtime_profile = build_runtime_profile(settings)
     security_schemes: dict[str, SecurityScheme] = {}
     security_requirements: list[SecurityRequirement] = []
-    if has_configured_auth_scheme(settings, "bearer"):
+    configured_auth_schemes = {
+        credential.auth_scheme for credential in build_static_auth_credentials(settings)
+    }
+    if "bearer" in configured_auth_schemes:
         security_schemes["bearerAuth"] = SecurityScheme(
             http_auth_security_scheme=HTTPAuthSecurityScheme(
                 description="Bearer token authentication",
@@ -492,7 +495,7 @@ def build_agent_card(
             )
         )
         security_requirements.append(SecurityRequirement(schemes=cast(Any, {"bearerAuth": {}})))
-    if has_configured_auth_scheme(settings, "basic"):
+    if "basic" in configured_auth_schemes:
         security_schemes["basicAuth"] = SecurityScheme(
             http_auth_security_scheme=HTTPAuthSecurityScheme(
                 description="Basic authentication",