[codex] Add LongBridge HK low-vol dividend switch plan

[Pigbibi]

Summary

• Enable LongBridge switch-plan support for hk_low_vol_dividend_quality.
• Update HK strategy dependency to the runtime/evidence-gated HK strategy commit.
• Add factor snapshot artifact filename hints for snapshot-backed factor contracts.
• Preserve dry-run-first behavior with required feature snapshot path and manifest placeholders.
• Carry latest main runtime guard / heartbeat changes into the branch.

Validation

• .venv/bin/python -m pytest -q tests/test_runtime_config_support.py tests/test_notifications.py tests/test_request_handling.py tests/test_runtime_strategy_adapters.py tests/test_signal_snapshot.py tests/test_decision_mapper.py -> 86 passed, 14 subtests passed
• Switch plan smoke confirms hk_low_vol_dividend_quality True feature_snapshot <required> and factor snapshot artifact hints.

Dependency / merge order

• Depends on [codex] Enable HK low-vol dividend quality runtime HkEquityStrategies#13.
• After HK strategy PR merges and a release tag is created, update this dependency from commit SHA to tag before final merge if repository convention requires tags.

Notes

• This PR does not change production Cloud Run directly.
• Real order enablement remains blocked until production factor snapshot, manifest, lineage, dry-run preview, notification log, and operator approval evidence pass validation.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Don't advertise hk-verify dispatch for low-vol

With this dependency, hk_low_vol_dividend_quality becomes an enabled LongBridge profile, but the dry-run switch plan still points operators at sync-cloud-run-env.yml with target=hk-verify; that workflow's hk-verify setup hard-codes strategy_profile to hk_listed_global_etf_rotation, so following the generated plan for the new profile validates and syncs the wrong strategy instead of the low-vol dividend runtime. Add a profile-specific workflow override/target or suppress the hk-verify dispatch hint for this profile.

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