repo hygiene: track the PINK launcher import closure

67 production .py modules that the running PINK service imports but which
were never committed: prod/bingx/ (HTTP client, market/user streams,
journal, config), prod/clean_arch/ adapters/persistence/runtime/dita/dita_v2
production modules and their co-located tests. Rule going forward: every
module imported by launch_dolphin_pink.py / pink_direct.py must appear in
git ls-files. Excludes _backup dirs, __pycache__, and non-code files.

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

prod/clean_arch/runtime/runner_heartbeat.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+"""
+Shared runner heartbeat helpers.
+
+This heartbeat is emitted by the long-running BLUE/PINK runner processes.
+It is intentionally separate from any Nautilus node liveness signal.
+"""
+
+from __future__ import annotations
+
+import json
+from datetime import datetime, timezone
+from typing import Any, Mapping
+
+RUNNER_HEARTBEAT_KEY = "runner_heartbeat"
+LEGACY_HEARTBEAT_KEY = "nautilus_flow_heartbeat"
+
+
+def build_runner_heartbeat_payload(
+    *,
+    flow: str,
+    phase: str,
+    run_date: str | None = None,
+    runner: str | None = None,
+    extra: Mapping[str, Any] | None = None,
+) -> dict[str, Any]:
+    payload: dict[str, Any] = {
+        "ts": datetime.now(timezone.utc).timestamp(),
+        "iso": datetime.now(timezone.utc).isoformat(),
+        "phase": str(phase),
+        "flow": str(flow),
+    }
+    if run_date:
+        payload["run_date"] = str(run_date)
+    if runner:
+        payload["runner"] = str(runner)
+    if extra:
+        for key, value in extra.items():
+            if isinstance(key, str) and key:
+                payload[key] = value
+    return payload
+
+
+def write_runner_heartbeat(
+    heartbeat_map: Any,
+    payload: Mapping[str, Any],
+    *,
+    include_legacy_alias: bool = True,
+) -> None:
+    hb = json.dumps(dict(payload), sort_keys=True)
+    heartbeat_map.blocking().put(RUNNER_HEARTBEAT_KEY, hb)
+    if include_legacy_alias:
+        heartbeat_map.blocking().put(LEGACY_HEARTBEAT_KEY, hb)