Strengthen long-horizon signal coverage

Author: Pigbibi

README.md

@@ -4,9 +4,10 @@
 
 Research-only signal context artifact repository for QuantStrategyLab.
 
-Current forward-looking shadow horizon for newly generated context bundles and
-example artifacts is `1-3 years`. Historical saved signal artifacts keep their
-original point-in-time horizon text and should not be rewritten.
+Current schema validation requires newly generated and promoted shadow signal
+artifacts to use the `1-3 years` horizon. Older pre-contract artifacts may keep
+their original point-in-time horizon text, but they should be treated as legacy
+records and not promoted as the current `latest_signal.json`.
 
 This repository does not place trades, store broker credentials, or own live
 allocation policy. It prepares and validates shadow signal artifacts that can
@@ -56,7 +57,9 @@ This repo does not own:
 ## Current Status
 
 This repository is in shadow research accumulation mode. The first saved
-point-in-time artifact is `data/output/signal_history/2026-05-28.json`.
+point-in-time artifact is `data/output/signal_history/2026-05-28.json`; the
+current promoted artifact is `data/output/signal_history/2026-05-31.json` and
+uses the long-horizon contract.
 
 Near-term work should focus on:
 
@@ -212,6 +215,11 @@ Historical generated copies can be stored under:
 data/output/signal_history/YYYY-MM-DD.json
 ```
 
+All promoted latest artifacts must use `horizon: "1-3 years"`. To support
+Advisor long-horizon buckets, current artifacts should also include versioned
+theme context through `theme_bias`, `symbol_theme_exposure`, and optional
+`symbol_bias` for symbols that need explicit long-context coverage.
+
 All artifacts must remain shadow-only. They cannot encode broker orders, target
 quantities, or live allocation overrides.
 

README.zh-CN.md

@@ -4,6 +4,8 @@
 
 QuantStrategyLab 的研究型信号上下文 artifact 仓库。
 
+当前 schema validation 要求新生成和 promoted 的 shadow signal artifact 使用 `1-3 years` 周期。较早的 pre-contract 历史 artifact 可以保留原始点时 horizon 文本，但不应再作为当前 `latest_signal.json` 推广。
+
 本仓库不下单、不保存券商凭证，也不拥有实盘仓位策略。它只负责准备、校验、保存和回放长周期 AI shadow signal。任何未来的下游使用，都必须经过单独评审，并由确定性插件或策略显式消费。
 
 ## 仓库定位
@@ -50,6 +52,14 @@ QuantStrategyLab 的研究型信号上下文 artifact 仓库。
 data/output/signal_history/2026-05-28.json
 ```
 
+当前 promoted artifact 是：
+
+```text
+data/output/signal_history/2026-05-31.json
+```
+
+它使用长线 contract，并补充了 `theme_bias`、`symbol_theme_exposure` 和 `symbol_bias`，供 Advisor 判断长线背景是否可用。
+
 近期工作重点：
 
 - 保持月度 workflow 健康
@@ -176,6 +186,8 @@ data/output/latest_signal.json
 data/output/signal_history/YYYY-MM-DD.json
 ```
 
+所有 promoted latest artifacts 必须使用 `horizon: "1-3 years"`。为了支持 Advisor 的长线栏位，当前 artifact 应包含 `theme_bias`、`symbol_theme_exposure`，必要时用 `symbol_bias` 补充单个股票的长线背景。
+
 所有 artifacts 必须保持 shadow-only。它们不能编码券商订单、目标数量或实盘 allocation override。
 
 `candidate_bias` 和 `theme_bias` 支持两种写法。兼容旧的紧凑写法：