chore: add execution evidence [20260507T021140-]

Author: ddx-land-coordinator

.ddx/executions/20260507T021140-c59f6f6e/result.json

@@ -0,0 +1,23 @@
+{
+  "bead_id": "axon-84088cbe",
+  "attempt_id": "20260507T021140-c59f6f6e",
+  "base_rev": "82f48c39b1cd9f6cf8c2c2e23e79cfd1cdf0b7ec",
+  "result_rev": "8e3eea1fcfa7f610209f696d75938901564b1c5a",
+  "outcome": "task_succeeded",
+  "status": "success",
+  "detail": "success",
+  "harness": "claude",
+  "model": "sonnet",
+  "session_id": "eb-f6ccb952",
+  "duration_ms": 1369839,
+  "tokens": 19939,
+  "cost_usd": 1.4006064999999996,
+  "exit_code": 0,
+  "execution_dir": ".ddx/executions/20260507T021140-c59f6f6e",
+  "prompt_file": ".ddx/executions/20260507T021140-c59f6f6e/prompt.md",
+  "manifest_file": ".ddx/executions/20260507T021140-c59f6f6e/manifest.json",
+  "result_file": ".ddx/executions/20260507T021140-c59f6f6e/result.json",
+  "usage_file": ".ddx/executions/20260507T021140-c59f6f6e/usage.json",
+  "started_at": "2026-05-07T02:11:40.743937286Z",
+  "finished_at": "2026-05-07T02:34:30.583606916Z"
+}

.ddx/executions/20260507T021140-c59f6f6e/usage.json

@@ -0,0 +1,9 @@
+{
+  "attempt_id": "20260507T021140-c59f6f6e",
+  "harness": "claude",
+  "model": "sonnet",
+  "tokens": 19939,
+  "input_tokens": 31,
+  "output_tokens": 19908,
+  "cost_usd": 1.4006064999999996
+}