tests/interaction: correct three annotations after spec validation

Per-entry validation of all 128 removed_in / 2026 arm_exclusions
annotations against the 2025-11-25 and 2026-07-28 (draft) spec text
found three inaccuracies:

- resources:subscribe:capability-required: removed_in is correct but
  the note claimed a separate subscriptions capability exists; the
  draft schema retains resources.subscribe (reinterpreted as opt-in
  for the resourceSubscriptions filter on subscriptions/listen).
- logging:message:all-levels, logging:message:fields: drop the
  legacy-only-vocabulary 2026 arm_exclusion. The eight RFC 5424 levels
  and the notifications/message payload fields are unchanged in the
  draft (deprecated by SEP-2577 but present), and neither test depends
  on logging/setLevel.

41 spec_version=2026 arm_exclusions remain (was 43); 504 connect cells
unchanged; 100% coverage.

Author: maxisbey

tests/interaction/_requirements.py

@@ -953,8 +953,9 @@ def __post_init__(self) -> None:
         ),
         removed_in="2026-07-28",
         note=(
-            "removed in 2026-07-28 (SEP-2575); the resources.subscribe sub-capability is replaced by the subscriptions "
-            "capability."
+            "removed in 2026-07-28 (SEP-2575); the resources/subscribe RPC is gone. The resources.subscribe "
+            "capability flag is retained but reinterpreted as opt-in for the resourceSubscriptions filter on "
+            "subscriptions/listen -- there is no separate subscriptions capability."
         ),
     ),
     "resources:subscribe:updated": Requirement(
@@ -1216,15 +1217,13 @@ def __post_init__(self) -> None:
     "logging:message:all-levels": Requirement(
         source=f"{SPEC_BASE_URL}/server/utilities/logging#log-levels",
         behavior="All eight RFC 5424 severity levels are deliverable as log message notifications.",
-        arm_exclusions=(ArmExclusion(reason="legacy-only-vocabulary", spec_version="2026-07-28"),),
     ),
     "logging:message:fields": Requirement(
         source=f"{SPEC_BASE_URL}/server/utilities/logging#log-message-notifications",
         behavior=(
             "A log message sent by a server handler is delivered to the client's logging callback with its "
             "severity level, logger name, and data."
         ),
-        arm_exclusions=(ArmExclusion(reason="legacy-only-vocabulary", spec_version="2026-07-28"),),
     ),
     "logging:message:filtered": Requirement(
         source=f"{SPEC_BASE_URL}/server/utilities/logging#setting-log-level",