feat: MarketWatch finance app (#185)#192
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…ch (#185) Defines the market-data.json contract (calendar with sessions/closures, per-symbol daily bars in as-printed 2001 prices) and the curated ~55-symbol list with verified Yahoo lineage mappings (HWP→HPQ, MWD→MS, UTX→RTX, SBC→T) and the 14 delisted symbols that need hand-entered overrides. Co-Authored-By: Claude Fable 5 <[email protected]>
…l-loud validation Fetches daily bars for all 41 sourced symbols (verified live: anchors match, DJIA 9/10 = 9605.51), un-adjusts Yahoo's split-adjusted closes back to as-printed 2001 prices, parses FRED DGS10, builds the Sept-2001 equity/bond calendar, and refuses to emit unless every symbol covers the required dates and matches archival spot-checks. 27 offline tests, ruff clean. MMC moved to override sourcing (Yahoo no longer serves any MMC data). Co-Authored-By: Claude Fable 5 <[email protected]>
…raday (#185) marketClock reduces a virtual-clock UTC instant over the bundled market calendar (closure outranks session: 9/11's open never rings) and picks the display session (frozen on 9/10 through the closure week). syntheticIntraday builds a deterministic per-(symbol,date) minute path from daily OHLC via chained seeded Brownian bridges through explicit high/low touch points — open/close pins and extreme touches are exact by construction. 21 tests. Co-Authored-By: Claude Fable 5 <[email protected]>
Co-Authored-By: Claude Fable 5 <[email protected]>
Co-Authored-By: Claude Fable 5 <[email protected]>
Co-Authored-By: Claude Fable 5 <[email protected]>
…symbols (#185) Every bar carries a citation; sources are pre-lineage-break Wayback captures of Yahoo daily CSVs (several archived in 2001 itself), a GitHub unadjusted dataset admitted only where its closes match independently-established CNN values, and contemporaneous CNN/CNNfn articles. All 15 symbols have full real OHLC for 9/7, 9/10, 9/17, 9/18 except old-AT&T (T), whose high/lows are conservative endpoint spans. Co-Authored-By: Claude Fable 5 <[email protected]>
Co-Authored-By: Claude Fable 5 <[email protected]>
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✅ Playwright E2E — 1 passed · 0 failed · 0 flaky · 0 skipped |
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Closes #185.
A Mac OS 8-style MarketWatch finance app that replays the September 2001 market timeline in sync with the virtual clock: quote board (2001 Dow 30 + airlines/insurers/brokers/defense/travel), index tiles (DJIA, S&P 500, Nasdaq, 10-yr Treasury yield), a market-status banner, and a CNBC-style scrolling ticker tape.
How it works
packages/tools/market-datatool (Yahoo chart API un-adjusted back to as-printed prices + FRED DGS10 + hand-curated archival overrides), uploaded to Wasabi, served atfiles.911realtime.org/market/market-data.json(infra allow-list: Keeping-History/infra@e91234c). No backend/streamer changes.marketClock.tsreduces the virtual clock over the bundle's session/closure calendar toopen | closed | halted. On 9/11 the open never arrives; the tape freezes at 9/10 closes under a TRADING HALTED banner until the 9/17 reopening. The bond market resumes 9/13 (visible in the 10-yr tile during the equity halt).syntheticIntraday.tsbuilds a deterministic per-symbol path pinned to each day's real open/high/low/close (seeded PRNG keyed on symbol+date — same minute, same price, every client). This module is the single seam to swap in real minute bars later.Delisted-symbol data provenance
Free sources don't carry AMR, UAL, LEH, MER, EK, old-GM, old-AT&T, etc. — today's same-name tickers are different companies.
market_data/overrides.jsonhand-curates all 15 with full real OHLC (except old-AT&T: conservative endpoint spans) from:The generator is fail-loud: it refuses to emit on any missing required date, anchor mismatch (DJIA 9605.51 → 8920.70), or spot-check drift.
Verification
tsc -b,eslint, 27 pytest, ruff — all green🤖 Generated with Claude Code
https://claude.ai/code/session_01QUazFBgLE84XSuHeAYkmbF