[moremeds]

What

This PR splits worker/jobs/data_gap_adapters.py (1,154 lines) into four modules by role. Imports run one way: context ← runners ← adapters ← executor. There is no re-export shim.

Module	Lines	Holds
data_gap_heal_context.py	160	RequestBudget, HealContext, HealSpec, _beat
data_gap_heal_runners.py	516	the _run_* writers, _recorder_hook, _uw_alpha_repo, _eventlog_heal, _replay_run_single_stock
data_gap_adapters.py	296	HEAL_SPECS, run_refresh_adapters
data_gap_executor.py	265	_verify_covered, the dispatchers, _verify_and_mark, execute_run

• Function bodies are unchanged. An AST comparison of all 50 top-level names in main's file against the four new modules found 0 missing and 0 changed.
• All 33 HEAL_SPECS entries still point at the same functions, which now live in data_gap_heal_runners.
• Every importer in src/ and tests/ now names the new home. worker/scheduler.py and worker/schedule/** do not import this module and are untouched.
• The CLAUDE.md "Data gap healer" row, the runbook code path, the data_gap_telemetry.py docstring and the CHANGELOG [Unreleased] entry are updated.
• data_gap_heal_runners.py is 16 lines over the 500-line target.

Monkeypatch targets

Each patch now goes on the module whose globals look the name up.

Test	Old target	New target
tests/integration/worker/test_caveat_never_aborts_heal.py	data_gap_adapters._verify_covered	data_gap_executor._verify_covered (_verify_and_mark calls it there)
tests/integration/worker/test_data_gap_adapters_replay.py	data_gap_adapters._replay_run_single_stock	data_gap_heal_runners._replay_run_single_stock (_run_pipeline_replay calls it there)

How the patches were verified:

• Each name is defined in exactly one module. monkeypatch.setattr defaults to raising=True, so a patch on the wrong module raises instead of passing silently.
• Mutation check: I disabled each monkeypatch.setattr line in turn and re-ran its test file. Both files fail without the patch (2 failed, and 2 failed + 1 passed), so each patch takes effect.

Verification

• Healer test set: 110 passed on baseline 521c4309 and 110 passed on this branch. The set covers 13 integration files (tests/integration/worker/test_data_gap*, caveat, gold-posture, uw-alpha, freshness-autoheal, CLI) plus test_no_dead_adapters.py, test_data_gap_healer_specs.py and test_source_telemetry_wiring.py.
• uv run pytest tests/unit/: 3160 passed.
• uv run ruff check src/ tests/ scripts/: clean.
• Format: no format commit was needed. The touched files pass ruff format --check, except tests/integration/worker/test_data_gap_telemetry.py, which already fails it on main for an unrelated line. I left that file as it is.

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