T04: deterministic semantic kernel

Alice/Bob/Carol runs end to end, deterministically, replayable from seed.
16 tests pass, no third-party dependencies.

- src/testdriver: intent, provenance, world, actions, drivers, observers,
  oracles, evidence, energy, scenario, runner
- lab/minimal.py: the SUT, exposing the independent observation channel
  required by D-07
- evidence is stratified S1/S2/S3; Runner refuses to attribute S2/S3 to an
  actor; claims are frozen and provenance-checked at construction
- missing evidence yields INCONCLUSIVE, which outranks PASS in the run verdict
- EnergyEvents captured, no scoring (H-005 dormant)

The observation channel records both stored state and an out-of-band
enforcement probe; their disagreement is an invariant and is what detects an
authorization defect that leaves the audit trail intact. A seeded
RevokeIsCosmetic lab fails the run via both the claim and that invariant.

Also closes TD-WP-0001-T02 (stack and commands now exist).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 1629012@bnt-lap001
Assistant-Session: 78d4fb13-8a1e-474b-87a3-9b9261c49a39

src/testdriver/energy.py

@@ -0,0 +1,45 @@
+"""Energy events — capture only.
+
+H-005 is dormant by decision: verification energy is not testable at the current
+scale, and a scoring function producing a number nobody can check is worse than
+no number. Events are recorded from the first run because history cannot be
+reconstructed later; scores always can.
+
+There is deliberately no score() function in this module.
+"""
+
+from __future__ import annotations
+
+from dataclasses import asdict, dataclass, field
+from datetime import datetime, timezone
+from enum import Enum
+from typing import Any
+
+
+class EnergyEventType(str, Enum):
+    DEFECT_DETECTED = "DEFECT_DETECTED"
+    REGRESSION_CAUGHT = "REGRESSION_CAUGHT"
+    MECHANICAL_ADAPTATION = "MECHANICAL_ADAPTATION"
+    SEMANTIC_ADAPTATION = "SEMANTIC_ADAPTATION"
+    TEST_DEFECT = "TEST_DEFECT"
+    FALSE_POSITIVE = "FALSE_POSITIVE"
+    DUPLICATE = "DUPLICATE"
+    CRYSTALLIZED = "CRYSTALLIZED"
+    USECASE_DEPRECATED = "USECASE_DEPRECATED"
+    EXECUTED = "EXECUTED"
+
+
+@dataclass(frozen=True, slots=True)
+class EnergyEvent:
+    """Immutable. Energy is derived from event history, never stored as state."""
+
+    asset_id: str
+    run_id: str
+    event_type: EnergyEventType
+    detail: dict[str, Any] = field(default_factory=dict)
+    at: str = field(
+        default_factory=lambda: datetime.now(timezone.utc).isoformat()
+    )
+
+    def as_dict(self) -> dict[str, Any]:
+        return {**asdict(self), "event_type": self.event_type.value}