research: clean up closed Tier-1 scaffolding from branch

Drop intermediate history-depth reports, sector-residual runners/map/code hooks
(evidence stays in final reports + docs), and slim MacBook helper to ssl/earnings/
prod-book-matrix only. SSL bootstrap and archived research conclusions retained.

docs/research/sector-residual-momentum.md

@@ -219,20 +219,17 @@ to reopen promotion.
 
 ---
 
-## Implementation notes (research machinery)
+## Implementation notes
 
-| piece | role |
-|---|---|
-| `app/services/sector_map.py` | GICS→ETF map, symbol normalise, JSON load/save |
-| `app/services/backtest_service.py` | multi-factor residual; `mom_12_1_sector_resid` in `_signal_values`; demean inject |
-| `scripts/build_ticker_sector_map.py` | SP500 CSV + FMP gap fill |
-| `scripts/fetch_sector_etfs_to_snapshot.py` | Alpaca → snapshot `benchmark_prices` |
-| `scripts/run_sector_residual_research.py` | race guard, IC, optional A/B, reports |
-| `data/research/ticker_sector_map.json` | persisted labels (research only) |
+Research runners and sector-residual harness hooks were **removed after close**
+(2026-07-19 cleanup). Evidence remains in the report artifacts below. Do not
+re-add without a new pre-registered protocol.
 
 ---
 
 ## Artifacts
 
-- JSON: `reports/sector-residual-20260719-083356.json`
-- MD copy: `reports/sector-residual-20260719-083356.md`
+| file | role |
+|---|---|
+| `reports/sector-resid-deep-20260719-113319.json` | **Authoritative deep FAIL** |
+| `reports/sector-residual-20260719-083356.json` | Short-window IC/A/B (superseded for promotion) |