78 Commits (main)

Author SHA1 Message Date
I Luk Kim 126445ae0e Promote v9.5.36 PEAD champion + prune experiments to 3-tier set; ORB soft-day parity; TGTC infra
- v9.5.36 promoted: megacap reaction_min 0.02→0.03 on v9.5.20 cap=0.70 base; Full 13,244%/MDD 11.67%/Sharpe 3.579/OOT 304%; clean Pareto win
- Pruned 130 experiment configs → keep 3 (v9.4.5 max-return, v9.5.36 balanced/champion, v9.5.18 cap=0.55 conservative); rebuilt index
- PEAD engine probes: low_vol anomaly + breakout_52w (retained as falsification probes; not promoted)
- Risk analysis: 11.67% MDD confirmed structurally HYMC (6-day giveback, not controllable); per-name cap sweep on next_open_long/reaction_close falsified (0 MDD impact)
- ORB: port soft-day primary-trigger filter to live engine (6-gate parity with simulator)
- TGTC trader infrastructure + advisor service (new)
- ORB v46/v49 sweep configs, intraday scripts, docs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
3 months ago
I Luk Kim f1782f5fd3 Add xsmom disk cache + promote v9.3.2b as champion, retire v9 sweep configs
- New: libs/backtest/xsmom_cache.py — disk cache for xsmom ranked-universe
  per rebalance date; keyed by snapshot fingerprint + param hash; top_n is
  NOT in key so v9.3.1 (top20) and v9.3.2c (top10) share one cache file
- libs/backtest/cross_sectional_momentum.py — add cache= param to
  build_candidates(); hit path skips 900-symbol scan; miss path writes ranked
  rows post-quality-gate to cache buffer
- libs/backtest/snapshot_store.py — expose snapshot_dir attribute; propagate
  through slice_by_date_range() so runner always has the path
- apps/backtester/run.py — wire up XsmomRankCache per engine (lazy init,
  flush after simulation loop); cache is no-op when snapshot_dir is None
- configs: add return_max_long_v9.3.2b_fc.json (SQS 93.5 champion,
  ER days[2,8]); remove all other v9 sweep variants from .index.json

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
3 months ago
I Luk Kim d000731cc7 PEAD session: add 4 candidate engines + Oracle vocab normalizer + auto-refresh disable
New engines (configurable but not promoted by default):
- libs/backtest/earnings_runup.py: pre-earnings drift entry (T-7 to T-3, attention+volume z-scores)
- libs/backtest/peer_sympathy.py: peer reaction trade after leader earnings, with reaction_close variant
- libs/backtest/vol_breakout_52w.py: 52-week high volume breakout
- libs/backtest/cross_sectional_momentum.py: 12-1 momentum with VIX/SPY-50dma regime filter

Pipeline additions:
- libs/parser/event_type_normalizer.py: normalize Oracle fallback raw vocab to strategy
  vocabulary (earnings_result→earnings_release, regulation_fd→guidance_update, etc.).
  Wired into apps/pipeline/event_parser/main.py oracle-fallback path.
- libs/labeler/label_generator.py: preserve future entry_dates as label_status='pending'
  instead of dropping as 'unavailable'.
- libs/export/snapshot_export.py: include 'pending' labels in snapshot export.
- libs/parser/rule_parser.py: harden 8-K item-code classifier against dirty input strings.

Infrastructure:
- libs/backtest/snapshot_store.py: _PRICE_FEATURE_WARMUP_DAYS 120→400 (needed for
  xsmom 12-1 lookback of 273 trading days).
- apps/backtester/run.py + apps/paper_trader/backtest_sim.py: disable auto-refresh
  of snapshots (user request — auto-refresh was silently rebuilding snapshots with
  current code, making historical backtests irreproducible across DB mutations).

Engine config support:
- libs/backtest/domain.py: add fields for ER/PS/VolBO/xsmom engine configs.
- libs/backtest/execution.py: wire pct-trailing for EarningsRunup.
- libs/backtest/scoring.py: synthetic candidate scoring for new engines.

Configs (POC + sweeps, none promoted as active strategy):
- Phase A-E PEAD baseline comparisons (no PEAD / +ER / +xsmom / +sleeves variants)
- Phase F1-F8 silo allocation sweep (v7.356 + ER/xsmom silos 15-60%)
- xsmom_poc_v1, xsmom_v2_regime_mdd
- v7.356_plus_er_silo_05/10/15/20/25/30 ranges
- earnings_runup_* / peer_sympathy_* / vol_breakout_52w_* POCs

Tests: 16-tests-each for each new engine + event_type_normalizer tests.

Note: backtest reproducibility infrastructure remains broken — see
_backup_2026-05-10/HANDOFF.md for details on the +12,592% reference run that
cannot be reproduced after rebuilds. Followup work needed before trusting any
specific backtest number.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
3 months ago
I Luk Kim 02f7b9f8d4 Fix capital_bucket propagation in synthetic engine candidates + ER silo sweep
Bug: synthetic Candidate builders in earnings_runup.py / peer_sympathy.py /
vol_breakout_52w.py did not propagate engine_capital_bucket_id /
engine_capital_bucket_allocation_pct from StrategyEngineConfig onto the
emitted Candidate. The selector path (libs/backtest/selector.py:371-383)
correctly sets these for selector-built candidates, but the synthetic-
candidate paths used by the new engine classes silently dropped them.

Cascade: apps/backtester/run.py:_active_capital_bucket_ids_for_candidates
scans candidate.engine_capital_bucket_id; when empty, the silo allocator
(run.py:790-791) short-circuits and the engine sizes against the full
equity pool — making capital_bucket fields a no-op for the new engines.

Fix: 3-line addition to each builder mirroring selector.py convention.
108 unit tests pass across the 3 engines.

ER silo sweep result (4y midlarge-liquid-long-v1, --split all):

  config              trades  er_tr  return%   mdd%  sharpe  er_pnl$
  v7.356_baseline       390     0    +2356.28  23.55   2.69     0
  phase6_shared_0.20    464    77    +2746.21  25.21   2.63 -7589
  silo_05               519    89    +2343.02  22.56   2.69   215
  silo_10               508    86    +2450.62  23.51   2.73   321
  silo_15               516    88    +2489.91  23.48   2.74   389
  silo_20               508    84    +2538.27  23.48   2.76   511
  silo_25               503    77    +2566.34  23.46   2.77   466
  silo_30               513    88    +2589.80  23.45   2.77   560

Phase 6 shared budget's headline +390pp gain was portfolio-luck distributed
(ER's 30 cancelled trades freed cash for other sleeves to make ~+30k pnl).
With proper silo, ER fires those trades within its dedicated bucket, sizing
correctly relative to the 5-30% pool — flipping ER engine PnL from
-$7,589 (Phase 6) to +$215..+$560 (silos).

silo_30 is the recommended variant:
 - Return +2589.80% vs baseline +2356.28% (+233pp, structural not luck)
 - MDD 23.45% vs baseline 23.55% (slightly better)
 - Sharpe 2.77 vs baseline 2.69 (+0.08, real improvement)
 - ER PnL +$560 (engine actually contributing)
 - Higher silos (40%+) likely starve PEAD; 30% appears near optimal.

Per-split validation of silo_30 NOT yet run — flagged for follow-up
before any live deployment.

Files:
 - libs/backtest/earnings_runup.py:494-499 (3-line fix)
 - libs/backtest/peer_sympathy.py:771-776 (3-line fix)
 - libs/backtest/vol_breakout_52w.py:654-659 (3-line fix)
 - configs/experiments/return_max_long_v7.356_plus_er_silo_{05,10,15,20,25,30}.json

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3 months ago
I Luk Kim 722e5cf6a9 Add Oracle event_type vocabulary normalizer for fallback path
When the rule parser can't classify an 8-K and falls back to Stock Oracle's
filing-events API, Oracle's vocabulary (e.g. earnings_result, shareholder_vote,
regulation_fd) was being written verbatim into events.event_type. The DB has
no CHECK constraint (libs/db/models.py:189), so 22 distinct Oracle values
silently leaked into a column the strategy's engine filters expect to be in
its 4-event vocabulary. Result: ~1,069 live rows silently dropped from
strategy candidate pool.

Files:
 - NEW libs/parser/event_type_normalizer.py: normalize_oracle_event_type()
   with conservative synonym map; normalize_oracle_event() additionally
   uses _classify_event_type from rule_parser when an item_number is
   present (item-code path is more reliable than Oracle's event taxonomy)
 - MOD apps/pipeline/event_parser/main.py: oracle-fallback branch (~line
   140) now calls normalize_oracle_event before writing to DB; emits
   oracle_event_type_normalized log event when value changes
 - NEW tests/unit/test_event_type_normalizer.py: 60 tests covering
   identity, synonyms, case/separator insensitivity, None/empty,
   non-string, item_number-precedence

Mapping highlights (justifications in test docstrings):
 earnings_result/earnings_announcement/earnings -> earnings_release
 guidance_revision/guidance_change/regulation_fd -> guidance_update
 material_definitive_agreement/definitive_agreement -> material_contract
 shareholder_vote/acquisition_disposition/bankruptcy/other -> other_material_event

Reg FD -> guidance_update mirrors rule_parser's Item 7.01 mapping for
internal consistency. Debatable but auditable.

Conservative pass-through for ambiguous values (financial_obligation,
articles_amendment, contract_termination, etc., 14 distinct values).
Visible filter-drop > silent re-tag.

Live DB counts that would reclassify on a future --reparse pass:
 412 earnings_result -> earnings_release
 409 shareholder_vote -> other_material_event
 237 regulation_fd -> guidance_update
   7 acquisition_disposition -> other_material_event
   4 other -> other_material_event
TOTAL 1,069 rows currently in oracle-fallback dead-zone.

60/60 normalizer tests pass; combined parser+schema validator suite 86/86.

Follow-up flagged: run --reparse on historical oracle-fallback rows after
extending reparse_events() to also re-normalize known oracle-fallback
values (currently only re-parses event_type='unknown').

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3 months ago
I Luk Kim 68102f1b3a Add reaction_close salvage variant to PeerSympathy engine
Add peer_sympathy_entry_timing_policy ("next_open"|"reaction_close") and
peer_sympathy_leader_filing_time_buckets to StrategyEngineConfig. The
reaction_close variant enters peers at peer's T 16:00 ET close on the
SAME trading day as the leader's print, addressing the v1 hypothesis
failure where T+1 gap had already absorbed the news overnight.

Lookahead defenses tightened for the new branch: cutoff is T 16:00 ET
(_bar_close_timestamp(decision_date)) instead of T+1 09:30 ET; bucket
allow-list excludes AMC filings (which under PEAD's reaction_date=T+1
convention pass the timestamp check but defeat same-session sympathy).
LeaderPrint now carries filing_time_bucket from the runner.

Runner: split _schedule_peer_sympathy_candidates into two phases.
reaction_close fires BEFORE _select_candidates_for_date(date) and emits
into _scheduled_add_ons[date]; next_open keeps the existing tail-of-loop
position emitting into _scheduled_delayed_entries[next_date].

v2 backtest (1052 trading days, midlarge-liquid-long-v1 snapshot):
  trades 256→120, return -52.9%→-2.4%, MDD 61.6%→24.5%, SQS 19.6→30.2.

Sample sympathy plays: GOOGL on META +7.7%, AVGO on COHR +6.3%,
SLB on HAL +5.5%, GE on HWM +5.1%. Profit factor 0.977 (one tweak
from breakeven). Verdict: VIABLE BUT WEAK — salvage hypothesis
empirically validated, near breakeven, not promoted yet.

35/35 peer_sympathy unit tests pass (29 pre-existing + 6 new for
reaction_close path).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3 months ago
I Luk Kim 465e248cb4 Wire pct-trailing end-to-end for EarningsRunup; tune v2 risk profile
Fix EarningsRunup trailing config that was previously captured in
Candidate.features only. Add activation-gated pct trailing to
update_trailing_stop with entry-relative giveback semantics
("lock in peak − giveback% of entry"). Plumb through
Candidate → ExecutionConfig → simulator. Default None preserves
legacy pct_X behavior — no impact on engines that don't opt in.

Add earnings_runup_poc_v2_tuned config: per_trade_risk_pct 0.65→0.30,
max_positions 30→8, max_positions_per_sector 30→4, macro_vix_max=30,
trailing_warmup_days 7→0 (activation gate replaces warmup).

v2 backtest (4y, 121 trades) vs v1 baseline (119 trades):
  Total return:  +37.27%  →  +254.69%
  Max drawdown:  53.23%   →  23.97%
  SQS:           45.2     →  69.7
  Robustness:    50.1     →  100.0
  Risk score:    23.5     →  35.0
  STOP r-mult:   −0.41    →  +0.65 (trailing-locked winners)

Promotion thresholds met: MDD < 25%, return preserved, SQS > 55.
Recommend integration as PEAD sleeve adjunct (orthogonal entry timing:
pre-print attention runup vs post-print drift) rather than standalone.

7 new pct-trailing tests: activation gate, ratchet, no-ratchet-down,
reversal-stop, legacy compat, end-to-end engine wiring. 28 passed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3 months ago
I Luk Kim 956cc78f1b Add 3 candidate engine classes beyond PEAD: EarningsRunup, PeerSympathy, VolBreakout52w
Adds three new synthetic-Candidate emitter engines parallel to the
existing leader_follower scheduler hook, plus look-ahead defenses
(LookaheadViolationError + per-engine assertions). Each engine is
covered by a standalone PoC config (no PEAD/parking/idle alpha) for
isolation backtests against the midlarge or broad snapshot.

Engines:

EarningsRunup (libs/backtest/earnings_runup.py)
 - Trigger: days_to_earnings ∈ [3,7] AND attention_zscore_20d ≥ 1.5
   AND dollar_volume_20d_zscore ≥ 1.0 (all evaluated at T-1 close)
 - Entry: T+1 next_open. Exit: -4% / +8% / max_holding_days =
   days_to_earnings - buffer (forced flat by close before announcement)
 - PIT calendar: PointInTimeEarningsCalendar adapter for backtest;
   oracle_surprise_prefetch fallback when parquet calendar absent
 - PoC verdict (configs/experiments/earnings_runup_poc_v1.json):
   119 trades over 1051 days, +37.27% total return, 44.46% MDD,
   SQS 45.2 (profitability=55.5, risk=23.5, robustness=50.1).
   VIABLE BUT NEEDS WORK — signal exists; standalone risk profile
   too aggressive for v7.356 baseline (8.8% MDD on v7.364). Path
   forward: per_trade_risk reduction, VIX gate, position cap, or
   integrate as PEAD sleeve adjunct (not as standalone replacement).

PeerSympathy (libs/backtest/peer_sympathy.py)
 - Trigger: leader passes PEAD filter (earnings_release / guidance_update
   / material_contract) AND leader reaction_close ≥ +5% AND peer 60d
   correlation ≥ 0.55 over [T-65, T-5]. Top-2 peers by correlation
   from leader_follower_extra_peer_symbols_by_sector + sector ETF
   holdings.
 - Entry: T+1 next_open on peer. Exit: -3.5% / +6% / max_holding=3 /
   peer-earnings blackout
 - PoC verdict (configs/experiments/peer_sympathy_poc_v1.json):
   256 trades over 1051 days, -52.92% total return, 54.47% MDD,
   SQS 19.6 (profitability=0.0, risk=5.4, robustness=100.0).
   DEAD. The leader's catalyst is already absorbed by T+1 next_open
   — peers gap up overnight before entry. robustness=100 confirms
   the negative result is not noise. Salvage paths (not implemented):
   reaction_close entry, raised-guidance-only restriction.
 - Note: initial run_id was 0 trades due to a select_candidates
   filter mismatch (engine.event_types=['peer_sympathy'] dropping
   real event_type='earnings_release' rows). The runner adapter
   was patched to bypass strategy_engine filtering for leader
   selection; the manual peer_sympathy_leader_event_types filter
   does the gating.

VolBreakout52w (libs/backtest/vol_breakout_52w.py)
 - Trigger: close_T-1 > max(high[T-252:T-2]) AND volume_T-1 ≥
   2 × median_volume_20d_T-2 AND ATR_14_T-1/close ∈ [0.015, 0.06].
   Entry T next_open, exit -3% / +5% / max_holding=2 / MOC.
 - Honest, look-ahead-safe descendant of the retired topgainer v1-v54
   family. Five layers of strict-before assertions guard the bar
   provider, candidate construction, trigger evaluation, and feature
   timestamps. A leaky-provider proof-by-contradiction test
   demonstrates the categorical catch.
 - PoC verdict (configs/experiments/vol_breakout_52w_poc_v1.json,
   broad-liquid universe): 1,332 trades, -87.28% total return,
   88.74% MDD, SQS 24.4 (profitability=0.0, robustness=100.0).
   DEAD AND HONEST. This is the most important finding of the three
   PoCs: the topgainer v1-v54 lineage's headline returns (+267%
   Sharpe 13.73 in best variants) were 100% lookahead bug. With
   the bug removed, the 52w-high + volume + ATR signal has no real
   alpha — the lookahead-corrected -4.3% from prior memory is
   confirmed and amplified to -87% on a fuller universe and longer
   horizon. Future "revive topgainer" proposals can cite this run
   (bt_return_max_long_v1_broad-liquid_20260509042903892342_3bb473d9)
   as definitive falsification.
 - Pre-open gap guard inactive (no premarket data in broad snapshot).
   skip_if_no_gap_data=true; the +4% gap-fade guard would not move
   the result given the magnitude.

Shared infrastructure additions:
 - libs/backtest/domain.py: LookaheadViolationError class +
   StrategyEngineConfig fields (11 EarningsRunup + 11 PeerSympathy
   + 13 VolBreakout52w = 35 new fields)
 - apps/backtester/run.py: _BacktestAttentionZscoreAdapter,
   _RunnerPeerResolver, _schedule_earnings_runup_candidates,
   _schedule_peer_sympathy_candidates,
   _schedule_vol_breakout_52w_candidates wired into the daily
   scheduler block. PeerSympathy adapter bypasses strategy_engine
   filtering on leader selection (manual filter handles gating).

Tests: 21 (EarningsRunup) + 27 (PeerSympathy) + 38 (VolBreakout52w)
= 86 new unit tests, all passing. Broader unit suite: 1392 passed,
2 pre-existing failures unrelated.

Net engine state: EarningsRunup is the only viable new engine class.
PeerSympathy and VolBreakout52w are kept in-tree as falsification
evidence, not as production engines.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3 months ago
I Luk Kim f67c534ce3 Harden 8-K item-code classifier against dirty input strings
The _classify_event_type mapping (2.02 → earnings_release, 7.01 →
guidance_update, 1.01 → material_contract, 1.03 → other_material_event,
8.01 → other_material_event, 5.02 → management_change) was already in
place but used naive 'in items' string matching. Upstream extractors
sometimes deliver items as 'Item 2.02' or '2.02 - Results of Operations'
(full-description form), which silently slipped through to event_type
'unknown' and were rejected by all 12 v7.356 PEAD engines.

A reparse using the patched classifier touched 9,779 historical 'unknown'
rows; only 16 actually flipped (the rest are genuinely off-vocab 8-Ks
like 9.01-only, 3.01, 5.07). The fix is therefore small in retroactive
impact, but defends against future ingestion drift.

Changes:
 - libs/parser/rule_parser.py: rewrote _classify_event_type with
   _normalize_item_codes (regex \\b(\\d+\\.\\d+)\\b token extractor) and
   tuple-of-pairs _ITEM_TO_EVENT_TYPE mapping. Earnings_release wins
   priority over management_change when 2.02 + 5.02 co-occur, consistent
   with the strategy's vocabulary intent.
 - tests/unit/test_rule_parser.py: 7 new regression tests covering
   AMD/MNST-style 2.02+9.01, dirty 'Item 2.02' / '2.02 - Results...'
   forms, and negative cases (9.01-only, 2.03, 3.01 remain unknown).

Note: a follow-up vocabulary normalizer is still needed for the
Oracle-fallback path in apps/pipeline/event_parser/main.py:140, which
writes raw oracle_event.event_type values like 'earnings_result',
'shareholder_vote', 'regulation_fd' that don't match the strategy
vocabulary. Flagged for separate ticket.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3 months ago
I Luk Kim 27de44c8d8 Fix label_price_unavailable: preserve future entry_dates as pending
Pre-market label_generator runs request future-dated price windows from
Stock Oracle, which correctly returns 404 because the data does not yet
exist. The labeler was swallowing this as label_status='unavailable' with
entry_date=None. Snapshot export then filtered these rows out, so live
PEAD trading silently lost candidates whose entry_dates fell on
later trading days (e.g., post-market 8-K filings late Friday → Monday
open entry). This explains today's missed RKLB/SNDK/AKAM/MNST/AMD/MRNA
even though their 8-Ks parsed correctly.

Changes:
 - libs/labeler/label_generator.py: in 404/empty-bars path, when
   entry_date >= today, preserve entry_date and mark label_status='pending'.
   New log event label_price_pending_future_window distinguishes from real
   data-unavailable failures (past dates still log label_price_unavailable).
 - libs/export/snapshot_export.py: include 'pending' in the
   label_status filter so today's not-yet-labeled events flow into the
   live snapshot.
 - apps/pipeline/label_generator/main.py: regeneration logic also
   retries existing 'unavailable' rows whose entry_date is null or future
   to recover events already mis-labeled in the DB.
 - tests/unit/test_labeler.py: regression test reproducing the
   RKLB/SNDK/AKAM failure mode and asserting label_status='pending' with
   entry_date preserved.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3 months ago
I Luk Kim bd26e7ab43 Fix incremental snapshot merge: coerce new row types to match existing schema
event_volume (and potentially other columns) can arrive as int64 from the
pipeline while the stored snapshot uses double, causing pa.concat_tables to
fail with "incompatible types" every run and silently fall back to a full
rebuild. _coerce_schema() casts new rows to the existing snapshot's types
before concatenation so incremental works without a full rebuild.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 004f1a5bce Fix parking entry/exit showing same price on last simulation day
On the last simulation day, parking was entered at EOD close price
(when _had_event_activity_today=True) and immediately liquidated at
close by end-of-backtest cleanup → entry == exit → PnL = 0.

Fix: force all six parking entry code paths to use "open" price when
date == last_simulation_date, so entry and cleanup-close are always
different prices.

Also adds _parking_cap logic in _extend_store_to_requested_window to
cap _requested_end_date at the last date where QQQM/TQQQ/SGOV all
have Oracle close-price data, preventing the simulation from including
days where macro is incomplete and the exit fallback would fire.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 9095b376d9 Clean up superseded configs and commit accumulated R&D infrastructure
Key changes:
- Delete superseded strategy configs: orb_gainers safe_v2-v9, orb_pullback, vwap_reclaim, hypergap, leader_safe
- Add V46 prior_event_types param to domain.py + run.py event type wiring
- Major simulator.py enhancements: sector thrust sleeve, sector proxy mapping, helper functions
- Improve screener.py with better scoring/filtering
- Add new test coverage: test_simulator.py (776 lines) + test_screener.py (313 lines)
- Add V24.1 research candidate configs (w002/w003/w004/entrycap/losscap010 variants)
- Add leader momentum research configs and sweep files
- Update configs/snapshots/registry.json with new strategy registrations
- Add docs/leader_intraday_momentum_workflow.md

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 08e41831bc Promote ORB Gainers V46: PEAD prior-event signal (D-7 lookback, w=0.12)
V24 → V46 via PEAD (Post-Earnings Announcement Drift) signal. Stocks with
earnings_release or guidance_update in prior 7 calendar days show +14.5pp
win rate improvement and +0.348R advantage on ORB breakouts.

Phase 1 diagnostic (291 V24 200d trades):
  Pearson=+0.135, Δ=+0.348R, WR gap=+14.5pp — all gates pass.

Phase 2 validation (w=0.12, Pareto-optimal from sweep):
  200d: V46 +114.60% / -11.83% / 3.21  vs  V24 +94.78% / -11.29% / 2.83
  400d: V46 +173.78% / -14.11% / 2.60  vs  V24 +162.1% / -13.70% / 2.471

Code changes:
- libs/intraday/domain.py: add prior_event_lookback_days: int = 0 param
- libs/intraday/orb_simulator.py: fix bug — weight_event_catalyst now wired
  for gainers_leader engine (was restricted to stocks_in_play_dual_regime only)
- apps/intraday_bt/run.py: _prefetch_prior_event_features_db() helper +
  DB routing in both catalyst trigger blocks when prior_event_lookback_days>0

V24 → status: superseded. V46 → status: live_champion.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 16f49411cb Add V34-V44 ORB diagnostic scripts; wire obv_slope_5 + min_obv_slope_20d infra
Signal axes tested (V34-V44, all failed G2 ≥ 0.30R gate):
- V34 obv_slope_5 (5d): G2=0.083R (null)
- V35 obv_slope composite (5d+20d): regime artifact (200d +18pp, 400d -12pp)
- V36 RSI-14: G2=0.148R, G5a=0.742 (redundant with OBV)
- V37 BB %B / BB width: G2=0.186R
- V38 dollar_vol_trend / sleep_streak / prior_day / vol_trend: all fail G2
- V39 premarket acceleration + hold ratio: G2=0.013R (null)
- V40 prior-day market breadth: G2=0.008R (null)
- V41 min_obv_slope_20d=0.0 hard filter: -15pp (OBV as gate too aggressive)
- V42 52w-high proximity + range position: G2=0.200R (best near-miss, fails)
- V43 30-min ORB window: -14.79% (catastrophic)
- V44 trailing multiplier sweep 0.6-1.0: 0.80 confirmed global optimum

Infrastructure added (backward-compatible, V24 parity preserved):
- features.py: obv_slope_5 enrichment key
- domain.py: weight_obv_slope_5=0.0, min_obv_slope_20d=None
- orb_simulator.py: 5 wiring sites for obv_slope_5; min_obv_slope_20d gate

V24 remains live champion. 20 signal axes exhausted.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 557d54921a V31 gap-zscore signal test: FAILED on both hard gate and negative weight
V31 research findings (2026-04-22):
- Hard gate (max_gap_zscore_20d=1.0): 45.2% vs V24 95.3% — catastrophically bad.
  All three terciles are profitable; hard rejection removes positive-EV trades.
- Negative weight (weight_gap_zscore=-0.05): 90.6% DD-12.33% Sh=2.649.
  Signal too weak (G2 failed at 0.181R < 0.30R threshold). G2 ≥ 0.30R
  validated as reliable promotion gate: OBV-slope (G2=0.394R) passed; all
  signals below 0.30R failed in backtest.

All 7 signal axes exhausted — V24 is the peak for current feature library.
domain.py: add max_gap_zscore_20d param (no-op at None default)
orb_simulator.py: add gainers_leader hard-gate (no-op at None default)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 4b8a157a67 Promote V24 ORB Gainers: add OBV-slope(20d) accumulation quality weight
Phase 1 diagnostic (diag_orb_quality_features.py) on V23 200d trade set found
obv_slope_20 passes all edge gates: Pearson=+0.2349 with r_multiple, top-tercile
WR 75% vs bottom 59.4% (+15.6pp), avg_R gap +0.394R. Hurst_60 and OU-θ_60 failed.

Weight sweep: 0.05 is Pareto-dominant (0.10/0.15 blow DD).

200d (same window): V24 +94.8% DD-11.3% Sharpe 2.83 vs V23 +85.0% DD-11.6% Sharpe 2.66
400d (same window): V24 +162.1% DD-13.7% Sharpe 2.47 vs V23 +149.4% DD-13.7% Sharpe 2.36
V24 Pareto-dominates V23 on both windows. V23 marked superseded.

Code changes:
- libs/intraday/features.py: add compute_obv_slope_approx() + enrich_daily_bars field
- libs/intraday/domain.py: add weight_obv_slope field to ORBStrategyParams
- libs/intraday/orb_simulator.py: wire obv_slope_20 read/store/score in gainers_leader branch
- configs: orb_gainers_v24_quality_overlay.yaml (new champion, live_readiness: experimental)
- configs: orb_gainers_v23.yaml status → superseded

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 9e622c6614 Investigate compound mode: V23 is absolute champion in all modes
- V23 pure compound (live-equivalent): 200d +148.13% DD-14.23%, 400d +209.41% DD-17.35%
- Hybrid V2 compound tested: 200d +175.41% looks promising but 400d +181.71% DD-23.72%
  loses to V23 by -27.7pp return AND -6.4pp worse DD → rejected
- Safe v9 compound 400d: +128.49% DD-14.43% — better DD but -81pp return vs V23 → rejected
- V23 tight governor compound 400d: +192.54% DD-17.32% — marginal gain, not worth config
- Live paper trader uses compound mode (engine.py:1816 session_equity = initial_equity + P&L)
- All improvement axes exhausted; V23 daily_reset declared TERMINAL

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 65afc95c7e Clean up: reduce Oracle timeout, fix company endpoint, archive old v7/v15/v16 experiments
- libs/oracle_client/alpaca.py: reduce bar-fetch timeout 90s→15s (fail fast on Oracle outage)
- libs/oracle_client/client.py: add health_check_fast() for cheap liveness probe; fix health path
- libs/oracle_client/company.py + financial.py: use /api/v1/company/{symbol} (newer endpoint)
- libs/oracle_client/__init__.py: re-export AlpacaSnapshot/get_snapshot/get_snapshots at package level
- configs/experiments: delete archived v15.x, v16.x, v7.119–v7.358 experiment configs (superseded)
- README.md: fix absolute path → relative path for ORB docs link

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim d7bfda039b Add expanded ORB simulator features and metrics
- orb_simulator.py: min_abs_gap_pct filter, premarket dollar vol filter,
  rolling_loss circuit breaker, drawdown_governor, streak_sizing,
  trailing_tighten_at_r, allow_doji/red_to_green breakout, abs_gap scoring
  for gainers_leader, ORBSimulationState, run_orb_simulation_with_state API
- metrics.py: loss_containment_score and related metrics
- features.py: enrich_daily_bars with gap_zscore, ATR ratio, range compression
- domain.py: extended ORBStrategyParams with new fields
- cache.py: DailyBarCache with merged parquet storage and coverage metadata
- simulator.py: base simulator updates for new entry/exit mechanics
- configs/intraday: updated orb_gainers_v23.yaml with canonical params
- Added BLD to midlarge symbol snapshot

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 8f0f99bdda Fix daily bar rebuild to use market-hours close; clean ORB simulator debug code
Two fixes:
1. _rebuild_daily_from_intraday_cache now filters to regular market hours
   (9:30–16:00 ET) before computing OHLCV. Previously used bars[-1] which
   included after-hours data, distorting prev_close for gap calculations.
   Root cause of V23 regression: HIMS Aug-4 after-hours drop to $54.81
   made it appear as a +0.89% gap on Aug 5 instead of the correct -12.85%
   gap (from $63.45 market close), causing it to fail min_abs_gap_pct filter.
   V23 with fix: +109.32%, WR 58.1%, Sharpe 3.01, DD -12.91%

2. Remove temporary debug instrumentation (HIMS/2025-08-05 trace blocks)
   that was left in orb_simulator.py during regression investigation.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 0cae86aa87 Revert: remove daily_budget_reset from PEAD backtest
Feature was added to wrong system (PEAD backtester). Fully reverted.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 189aa58343 Add daily_budget_reset mode for research backtesting
New mode (risk.daily_budget_reset=True) where cash_available and sizing
equity reset to initial_equity at the start of each day, regardless of
how many open positions or realized P&L exist. Unlike fixed_capital_sizing
(단리, sizing only), this also treats buying power as if no positions are
held — useful for evaluating signal quality independent of capital constraints.

- domain.py: daily_budget_reset field on RiskConfig
- run.py: _daily_budget_reset flag; _sizing_equity / _sleeve_equity_est /
  _build_portfolio_state all honor the new flag
- backtest_sim.py: daily_budget_reset param threaded through
- direct_runner.py: --daily-budget-reset CLI flag
- routers/backtest.py: BacktestRequest field + cmd arg
- client.ts: BacktestParams / BacktestTask types updated
- Backtest.tsx: checkbox in form + DBR badge in task list

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 86419beeb0 Fix ORB intraday data pipeline and consolidate strategy configs
- screener: switch from non-existent single-ticker endpoint to multi-ticker
  /alpaca/intraday batch calls (grouped by date, chunk ≤ 75); fixes 0-trades
- cache: bump version 2→3 to invalidate stale IEX Parquet files
- oracle_client: add get_multi_intraday_bars_today() for IEX real-time feed
- paper_trader: use /alpaca/intraday/today for live sessions, /alpaca/intraday
  for historical (SIP)
- intraday.py: define _BUILTIN_STRATEGIES={} to fix /api/orb/strategies import
- delete orb_p1–p10_winner + variant configs; add strategies/orb_default.yaml
  (Phase 10 params) as the single registered web strategy

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 564bcba27c Add ORB pre-market screening and fix Oracle/Alpaca reliability bugs
- Add run_pre_screen() at 9:20 ET: fetch daily bars + enrichment + quality filter
  before market open, narrowing universe for faster orb_detect intraday fetch
- run_orb_detection() uses cached pre-screen data when available; falls back to
  full pipeline if pre_screen missed (late start, failure)
- Add _last_trading_day() helper to skip weekends/holidays for bars_end,
  preventing Alpaca 502 on Mondays (today-1 = Sunday was causing failures)
- Fix Oracle client chunk_size 300→75: Alpaca rejects 100+ ticker URL requests
- Add pre_screen event to build_schedule() at 9:20 ET and dispatch in _run_trading()
- run_session_now() runs pre_screen before orb_detect for efficiency
- Add ORB daemon, engine, models, state, screener, and intraday strategy configs
- Add intraday library (libs/intraday/) and web routes for ORB/intraday trading

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 658a741017 Route ORB bar data through Oracle API instead of calling Alpaca SDK directly
- libs/oracle_client/alpaca.py: Added get_multi_daily_bars() and
  get_multi_intraday_bars() helpers that call Oracle's /api/v1/price/data
  and /api/v1/alpaca/intraday endpoints respectively. Oracle handles
  symbol normalization (e.g. BF-B → BF.B) internally, so symbols like
  BF-B no longer crash the screening chunk.
- apps/paper_trader/alpaca_broker.py: get_bars() and get_intraday_bars()
  now use the new Oracle client helpers instead of the Alpaca SDK
  StockBarsRequest, eliminating direct Alpaca bar API calls from broker.
- apps/orb_trader/engine.py: Removed per-symbol BF-B workaround (now
  unnecessary since Oracle normalizes the symbol server-side); kept outer
  try/except for chunk-level resilience.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 426de9038d Fix lookback entry bugs: current-price sizing + MHD expiration filter
Bug #2 (paper trader): lookback entries sized using historical entry_price_est
but filled at current market price, causing cash overdraft. Fix: override
entry_price_est with get_latest_bars() close before entering _process_entries.

Bug #3 (paper trader + backtester): paper trader was missing the per-candidate
MHD expiration check that the backtester already had. Also adds
lookback_min_remaining_days (default 3) to reject candidates with too little
holding time remaining — prevents entering a position the day before forced exit.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 236148de2e Remove momentum breakout sleeve (overfitting, valid -31%) and revert related code
- Delete v7.360-v7.363 experiment configs (rotation/momentum tests)
- Remove _schedule_momentum_breakout_candidates() from backtester run.py
- Remove MomentumBreakoutConfig from domain.py
- Delete momentum_calendar.py, momentum_screener.py, build_momentum_calendar.py
- Delete data/momentum_calendar/ parquet data

Valid period performance was -31.36% vs +152.4% baseline — sleeve is not viable
without walk-forward validation. Abandoning for now.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim b3ba914a8d Optimize v7 strategy: v7.356 achieves CW 2159% + SQS 90.7 (Pareto improvement over v7.314)
Key changes from v7.314 baseline (CW 2012%, SQS 90.0):
- max_position_value_pct 15→25, non_a_tier_target_1_fraction 0.2→0
- max_daily_new_risk_pct 30→50 (via v7.330, CW champion 2148%)
- bullish_raised_recovery per_trade_risk_pct 0.71→0.55 (DD improvement)
- bullish_raised_recovery max_holding_days 12→10 (sweet spot, +98pp CW)

Result: v7.356 CW 2159% (+147pp), SQS 90.7 (+0.7), risk 66.2 (+2.9), robustness 94.3 (+0.5)
All metrics improved simultaneously — return increase AND DD reduction achieved.

Also includes: web UI updates, pipeline scripts, v16/v17/v18/v19 experiment pruning,
Form4 preset additions, snapshot registry updates, domain.py enhancements.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 5496059b6c Add v7.120 composed GLD experiment updates 4 months ago
I Luk Kim f21caf23cb Prune Form4 experimental presets 4 months ago
I Luk Kim 4b1d9afde7 Prune unused sleeve presets and trim web preset lists 4 months ago
I Luk Kim 969dedc635 Speed up snapshot refresh: batch prefetch, unbuffered output, incremental-first
- enrich_tier2: prefetch price bars (parallel ThreadPool) and short ratio
  (single batch DB query) instead of per-row HTTP/DB calls (~20min → ~2min)
- canonical_snapshots: add PYTHONUNBUFFERED=1 to enrichment subprocesses
  so progress output is visible in real time
- backtest_sim: use incremental_update_canonical_snapshot when existing
  snapshot is present, falling back to full rebuild only when needed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 5cb2b9fcb8 Add non-core allocator v2 and Form4 freshness presets 4 months ago
I Luk Kim e38c314a09 Add ownership/risk-off sleeves, v17-v19 experiments, and web app restructure
New features:
- Ownership 13D/13G residual-cash sleeve with PIT calendar and quality filters
- Risk-off alpha sleeve (GLD/DBC rotation on crisis regime signals)
- Crisis relay target in parking: evaluates before defensive relay
- Bearish symbol allocation split (bearish_alloc_pct + sgov remainder)
- Alternative defensive ETF candidate (cash_parking_defensive_alt_symbol)
- Composite eval and engine ablation tools
- experiment and overfit CLI apps

New experiments:
- v17.x series (v17.1 champion SQS 78.4; v17.5–v17.129 exhausted)
- v18.x and v19.x families from v12.8 OOT defense branch
- v7.119 composed variants (idle alpha + ownership + risk-off sleeves)
- parking_only configs: bufb, jepq, merix, regime_tiered
- empty_strategy baseline config

Web app:
- Restructured into routers/services modules (experiments, leaderboard, runs, sqs, docs)
- Ownership sleeve and risk-off sleeve controls in backtest UI
- Frontend: ComposeStrategy page, tradeSleeves lib, idle decomposition display

Research tools:
- Ownership 13D/13G probe and PIT cache builder
- Dividend capture probe and cache builder
- Insider Form4 idle alpha probe
- Alternative ETF parking probe, put-spread overlay probe
- Wikimedia low-attention and peer-relative idle alpha probes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim 5056295cb6 Add lookback entry feature for bounded backtests
When a backtest starts mid-stream (via --start), events that fired
before the start date but are still within their max_holding_days
window can now be entered on the first simulation day.

- Add `lookback_entry_enabled: bool = False` to ExecutionConfig
- On first sim day, _collect_lookback_candidates() gathers pre-start
  events, runs them through the same select_candidates() pipeline,
  and injects them before normal candidates
- Entry fills at the first day's open price; gap-cap check is skipped
  since the event is multi-days old
- days_held is initialized to the elapsed trading days so TIME exits
  fire at the correct time relative to the original event date
- Store slice is extended backward by max_mhd calendar buffer so
  pre-start rows survive slice_by_date_range when feature is enabled
- Enabled in return_max_long_v7.119 for testing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
I Luk Kim ea9f156eeb Tune Form4 sleeve quality filters and reserve sizing 4 months ago
I Luk Kim 72681e69e5 Add Form4 residual-cash sleeve and UI support 4 months ago
I Luk Kim 86d55e01f9 Fix PIT snapshot store regressions for backtests 5 months ago
I Luk Kim f2113b7e06 Fix cash parking phantom-money bug + live engine parking liquidation for events
Backtester (run.py):
- cash_available = (self._cash + parking_value) * multiplier caused trades to be
  approved even when self._cash ≈ 0 (all money in SGOV/QQQ).  Trades executed
  by deducting from self._cash → negative cash (phantom money).
- Fix: after simulate_entry, if self._cash < actual trade cost and parking exists,
  call _liquidate_parking_for_cash(shortfall) before deducting from cash.
- Verified: 2022-2026 backtest with qqqm_low_dd shows 0 cash_negative events.

Live engine (engine.py):
- Add _parking_liquidate_for_event(): frees parking cash to fund event entries.
  SGOV (virtual) reduces entry_value in DB; QQQM/QQQ sells real shares via broker.
- Both entry loops (engines mode + flat/reaction_close mode) now attempt parking
  liquidation when plan.skip_reason == "insufficient_cash" before giving up.

Also includes prior session work (accumulated since last commit):
- 6 novel parking gate signals: VRP, Market Temperature, Hurst exponent, Rolling
  Kurtosis, Return Autocorrelation, SPY-QQQ Correlation (composite risk score v2)
- QQQM parking symbol support (lower expense ratio vs QQQ)
- Snapshot auto-refresh + bar extension cache (pickle) to avoid 10-min re-fetches
- Bar extension clamps to last market-closed date (ET 4PM check)
- fithia2 refresh command; --no-refresh flag for paper backtest
- Paper backtest macro extension beyond last event date (parking-only periods)
- parking_state DB schema: 7 new columns (peak_price, gate_in_sgov,
  committed_target, pending_target, pending_days, sgov_entry_value, sold_today)
- Live engine: target confirmation (2-day), top-up drawdown gate, trailing stop,
  SGOV interest accrual, full 6-signal gate evaluation
- New PARKING_PRESETS: qqqm_low_dd, composite_v2, vv_24_vrp8, vt_24_t13, etc.
- Web GUI / CLI result parity fix (Oracle URL via get_settings().stock_oracle_url)
- Force-close uses last_exec_date (has bar data); parking liquidates at last_date

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
5 months ago
I Luk Kim 9cb91ee846 Add synthetic scenario robustness testing system
Builds a full synthetic market data pipeline to test strategies against
12 diverse market regimes (bull/bear/crash/chop/rotation/liquidity drought)
that may not exist in historical data. Computes Regime Robustness Score (RRS)
to detect overfitting and environment-specific fragility.

- libs/backtest/scenarios/: price_gen, macro_gen, event_gen, coupling,
  store_builder, scenarios (12 pre-built), robustness (RRS)
- apps/scenario/cli.py: `fithia2 scenario-test` with Rich output
- apps/tracker/cli.py: scenario-test command routing
- tests/: 83 unit tests across 3 new test files
- docs/scenario_test.md: usage guide and result interpretation
- docs/research_workflow_and_handoff.md: Step 5.5 scenario test added

Fix: no_signal scenario uses drift=0% (was +10%) for fair signal integrity scoring.
Fix: synthetic candidates now carry macro_vix/macro_hy_spread from macro_by_date
     to pass selector engine filters.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
5 months ago
I Luk Kim 76581ead04 Remove overlay backtesting and scoring 5 months ago
I Luk Kim 493b8a8d69 Add --overlay shorthand for lb command and gitignore *.db files
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
5 months ago
I Luk Kim a81b3a6ac4 Update tracker, leaderboard, docs, and overlay leaderboard
Additional tracker/leaderboard updates, overlay leaderboard, and
documentation improvements.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
5 months ago
I Luk Kim 2aba6418e6 Add overlay engine, ranking models, snapshot pipelines, and research tools
New libs: overlay curve builder, ranking models, continuation/merged
snapshot export, intraday features. New tools: overlay evaluator,
ranking model builder, deep evaluation, fullsplit batch runner.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
5 months ago
I Luk Kim ce2150789d Fix leaderboard performance regression (60min → 12s) and clean up CLI help
Replaces per-experiment rglob with single-pass manifest/metrics indexing
and adds lru_cache. Removes rarely-used commands from help display.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
5 months ago
I Luk Kim 784c581f19 Enhance backtest engine: v11 scoring, selector expansion, snapshot store improvements
Extends selector with new scoring model support, adds execution
enhancements, and improves snapshot store loading and split handling.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
5 months ago
I Luk Kim 57d38ecfe0 Add earnings surprise feature pipeline and snapshot export improvements
Adds earnings surprise extraction to parser/features/labeler pipeline,
improves filing fetcher robustness, and extends snapshot export with
new field support.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
5 months ago
I Luk Kim e2229646e6 Add oversold bounce engine experiments (v6new.259-264) — blocked by architecture
Bounce engine (buy negative reaction, bet on mean reversion) could not
execute: system architecture ties scoring to single model per backtest,
and selector/store indexes are optimized for positive-reaction PEAD.
Negative-reaction candidates get score=0 from PEAD scoring, blocking
engine selection regardless of engine-level threshold overrides.

Implementing bounce trades requires: dual scoring model support,
selector changes for negative-reaction candidate routing, and
store indexing changes. Deferred to future refactor.

Current best CW return: 293.2% (v6new.255)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
5 months ago
I Luk Kim 090bfa8e36 Add contrarian feature analysis + v15 scoring (v6new.174-188)
Data analysis revealed OBV Q1 (distribution) has 56.4% WR vs Q5 51.2% —
contrarian signal confirmed. Previous OBV bonus was applied in wrong
direction. Corrected with v15 scoring models.

Best result: v6new.185 (entropy + risk 0.058) CW 274.4% but SQS 72.2,
still below v6new.122 (72.4). WFV/robustness offsets CW gains.

v6new.122 confirmed as optimal under current SQS v4 formula.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
5 months ago