foundation: STOPPING_RULE, WORKFLOW, pyproject, calendar YAML, _meta, directory layout

data/_meta.yaml

@@ -0,0 +1,18 @@
+schema_version: 1
+
+# Versions stamped on every CSV row. Update only when behavior changes.
+indicator_version: "v-2026-05"
+pl_overlay_version: "marius-v1"  # 50% TP0 + BE + close ~TP1
+
+csv_schema_version: 1
+calendar_schema_version: 1
+
+# Tier 1 / Tier 2 trading windows (informational; Set calc uses calendar_parse.py logic)
+tier_1_window:
+  start_ro: "16:35"
+  end_ro: "18:00"
+  days: ["Tue", "Wed", "Thu"]
+tier_2_window:
+  start_ro: "22:00"
+  end_ro: "22:45"
+  days: ["Tue", "Wed", "Thu"]