refactor(operator-trend): data-driven payload emitter + collapse first 2 ladder tiers (T3-2 phase 8c)

[saagpatel]

What

Introduces _emit_resolution_payload_entries — a generic, data-driven emitter that rebuilds the recovery-tier payload keys from a (out_key, source_name, is_ternary) spec table — and converts the first two ladder tiers (reset_reentry + reset_reentry_rebuild, 71 contiguous entries) to it. This is the validate-the-mechanism PR; the remaining ~245 entries collapse the same way in the follow-up.

The pattern

A conformance proof over all 320 payload entries found 316 are exactly two patterns, with only 4 OTHER (the 3 summary-fn calls + bare decision_memory_map):

• Ternary: primary_target.get(<out_key sans 'primary_target_'>, value) if primary_target else value
• Plain: sources[source_name][out_key]

So the load-bearing string contract becomes an auditable data table + a 14-line loop, instead of ~1,600 lines of hand-written ternaries.

def _emit_resolution_payload_entries(payload, *, primary_target, sources, entries):
    for out_key, source_name, is_ternary in entries:
        value = sources[source_name][out_key]
        if is_ternary:
            payload[out_key] = (
                primary_target.get(out_key.removeprefix("primary_target_"), value)
                if primary_target else value
            )
        else:
            payload[out_key] = value

Faithfulness

Byte-identical by construction — the conformance proof verified every converted entry matches the emitter's patterns (get-key included), so the emitter regenerates the identical expression. The 7 now-dead tier source-unpacks are pruned (computed precisely: they were referenced only by the moved entries; tier-3 bridges from different sources).

Proof

• Characterization net (tests/test_resolution_trend_golden_contract.py) → byte-identical green
• uv run pytest -q → 2541 passed, 2 skipped
• ruff check src/ tests/ → clean (no F841) · mypy → clean
• Net −304 lines for 2 tiers; the follow-up sweep removes ~1,000 more.

Next

PR-B converts the remaining 5 ladder tiers + the early-region A/B entries and deletes the re-derivation preamble — the full ~1,300-line collapse, under this same green net.