feat: add scoped alpha sync and local self-correlation

backend/app/alphas.py

@@ -4,9 +4,24 @@ import math
 import re
 from datetime import datetime
 
-from sqlalchemy import or_, select
+from sqlalchemy import or_, select, update
+
+from .models import Alpha, Research, ResearchTag, SelfCorrelation, now
+
+
+def submission_condition(submission):
+    """Match the platform list contract; a missing status is never assumed submitted."""
+    return Alpha.status == "UNSUBMITTED" if submission == "UNSUBMITTED" else Alpha.status != "UNSUBMITTED"
+
+
+async def invalidate_correlations(db, alpha_id, regions=()):
+    """A changed baseline or PnL invalidates local conclusions without touching platform checks."""
+    await db.execute(
+        update(SelfCorrelation)
+        .where(or_(SelfCorrelation.alpha_id == alpha_id, SelfCorrelation.region.in_(regions)))
+        .values(stale=True)
+    )
 
-from .models import Alpha, Research, ResearchTag, now
 
 SENSITIVE_KEYS = {
     "password",
@@ -67,6 +82,8 @@ async def upsert_alpha(db, raw: dict):
     if not isinstance(alpha_id, str) or not alpha_id:
         raise ValueError("Alpha 数据缺少 ID")
     item = await db.get(Alpha, alpha_id)
+    previous_region = item.region if item else None
+    previous_status = item.status if item else None
     if item is None:
         item = Alpha(id=alpha_id)
         db.add(item)
@@ -78,6 +95,13 @@ async def upsert_alpha(db, raw: dict):
     item.alpha_type, item.language = raw.get("type"), settings.get("language")
     item.stage, item.status, item.hidden = raw.get("stage"), raw.get("status"), raw.get("hidden") is True
     item.region, item.universe = settings.get("region"), settings.get("universe")
+    if previous_region != item.region or previous_status != item.status:
+        regions = {
+            region
+            for region, status in ((previous_region, previous_status), (item.region, item.status))
+            if region and status and status != "UNSUBMITTED"
+        }
+        await invalidate_correlations(db, alpha_id, regions)
     item.settings, item.is_metrics = sanitize(settings), sanitize(metrics)
     item.os_metrics = sanitize(raw.get("os")) if isinstance(raw.get("os"), dict) else {}
     item.checks = sanitize(metrics.get("checks") or raw.get("checks") or [])
@@ -93,6 +117,8 @@ async def upsert_alpha(db, raw: dict):
 
 def list_statement(filters):
     query = select(Alpha, Research).join(Research, Research.alpha_id == Alpha.id)
+    if filters.submission:
+        query = query.where(submission_condition(filters.submission))
     q = filters.q
     if q:
         pattern = "%" + q.replace("\\", "\\\\").replace("%", "\\%").replace("_", "\\_") + "%"