[truealpha-datahub] Implement strict Yahoo adapter

[wangzitian0]

Summary

• add an unregistered, batch-private Yahoo chart source configuration and content-addressed frozen call plan
• parse raw JSON numeric tokens directly to Decimal and fail closed on identity, date, exchange, OHLCV, schema, status, and content-type drift
• retain adjusted close as reconciliation-only and factor-invisible while preserving unadjusted OHLCV
• accept only D3 E0 and advance the canonical target to E1; no persistence, schedule, live Staging run, or release activation is added

Acceptance evidence

• targeted D3 E0 suite: 28 passed
• targeted Ruff and full mypy: passed (91 source files)
• offline issue graph, live GitHub parity, and pull-request authorization passed
• exact current base 4fdc70fe5fb7a18da3c9a0f28c0b10ba49553990 and head d90024b1666c0a6bf2b8cd0c2d1609c5c65671f6
• Delivery Governance generates strict RungEvidence against the final PR head during CI; no self-referential checked-in evidence is claimed

Claim ceiling

This accepts isolated E0 configuration/parser behavior only. It makes no persisted-capture, live-source readiness, Staging, scheduling, strategy, Production, or release-readiness claim.

Advances #171.

[Copilot]

Pull request overview

This PR advances the D3 “staging TOPT capture” batch by landing an E0-only, unregistered Yahoo Chart adapter slice (strict JSON/Decimal parsing + frozen call plan) and updating governance metadata to reflect E0 acceptance and an E1 target, while keeping the batch explicitly non-activated (no persistence/scheduling/release binding).

Changes:

• Update D3 batch governance metadata (manifest + Vision issue graph) to accept E0 and advance the target rung to E1.
• Add an E0 Yahoo Chart slice (e0_slice.py) that freezes request plans and parses Yahoo Chart JSON into Decimal without binary floats, with strict fail-closed validation.
• Add a targeted pytest suite covering frozen corpus binding, strict parsing failure modes, and mocked HTTP behavior.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
governance/vision-issue-graph.json	Advances D3-staging-topt-capture status/target rung and updates pinned manifest SHA.
governance/evidence/D3-staging-topt-capture-E0.v1.json	Adds D3 E0 rung evidence artifact (currently schema/head-SHA issues noted in review comments).
governance/batches/D3-staging-topt-capture.v1.json	Accepts E0 in the batch manifest, advances target to E1, and records accepted output metadata.
apps/data-engine/tests/batches/staging_topt_capture/test_e0_slice.py	Adds focused unit tests for the frozen plan + strict Yahoo parsing and mocked HTTP call.
apps/data-engine/src/data_engine/batches/staging_topt_capture/e0_slice.py	Implements the strict Yahoo Chart adapter slice and corpus/plan binding utilities for E0.

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