Narrative revamp: causality-first positioning, two product lines, Phase 2 neural-game design, JA/KO docs

[hongjin-he]

What this PR does

Reorganizes the repo's narrative around four layers, without touching any library code (all 50 tests pass unchanged).

1 · Positioning

• New README section — "The First-Principles Bet: Causality over Correlation": the core differentiation argument. Historical data does not repeat (factors decay when crowded); the world that generates the data — institutions, regulation, incentives — does repeat. We model the generator, not the residue.
• docs/JOURNEY.md — the intellectual journey: world-model skeptic (quantum-precision + storage objections) → converted by DayDreamer, GAIA-1, Genie, Cosmos, V-JEPA 2, and the spatial-intelligence conversation around Stanford → collision with the factor zoo's first-principles violation → the merge that became E-Game-C. Linked from "The Story".

2 · Technical roadmap

• Roadmap reframed as Phase 1 (game-theoretic core) — structure-first justified by Theorem 1, not a compromise — and Phase 2 (docs/PHASE2_NEURAL_GAME.md): the Neural Network Game Structure, where every neuron is itself a small agent-network, regulatory constraints are imposed as architecture, and one-vs-two-network is assigned to experiment (E8). Honest about the squared training difficulty and the H200-class trigger.
• RESOURCES.md — data + compute priced by scenario (doubles as use-of-funds); defines experiment E7.

3 · Product

• New README section — "Two Products, One Engine": To-C denoised equilibrium price (mid/long-horizon, with compliance-safe wording) + To-B structural risk. The 2008 hindcast stays the headline validation.
• demo/denoised_price_2026.py + figure — synthetic concept demo shaped on the July 2026 memory unwind (SOX −19%, worst month since 2008): signal fires ~2 weeks before the unwind accelerates; retail capitulates at lows institutions buy. Clearly labeled synthetic throughout.

4 · Growth

• Live star-history chart (auto-updating, star-history.com).
• Partnerships & Contact section: four counterparty types, linked one-pager (docs/ONE_PAGER.md).
• Japanese + Korean condensed READMEs (docs/i18n/), language switcher in both main READMEs.
• README_CN fully synced; world-model references [41]–[46] added.

Verification

• python -m pytest tests/ → 50/50 passing
• python demo/denoised_price_2026.py runs clean on CPU, regenerates the committed figure
• All new internal links resolve