Add classifier hits and alerts pipeline

Add NATS subjects + ClickHouse tables for classifier hits/alerts, evaluate sweep/spike rules in compute, expose API/WS endpoints, and cover storage helpers with tests.

packages/storage/tests/classifier-hits.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it } from "bun:test";
+import {
+  classifierHitsTableDDL,
+  CLASSIFIER_HITS_TABLE,
+  fromClassifierHitRecord,
+  toClassifierHitRecord
+} from "../src/classifier-hits";
+
+const hit = {
+  source_ts: 10,
+  ingest_ts: 20,
+  seq: 1,
+  trace_id: "classifier:large_bullish_call_sweep:fp-1",
+  classifier_id: "large_bullish_call_sweep",
+  confidence: 0.72,
+  direction: "bullish",
+  explanations: ["Likely call sweep.", "Premium $50000."]
+};
+
+describe("classifier hits storage helpers", () => {
+  it("includes the correct table name in the DDL", () => {
+    const ddl = classifierHitsTableDDL();
+    expect(ddl).toContain(CLASSIFIER_HITS_TABLE);
+    expect(ddl).toContain("CREATE TABLE IF NOT EXISTS");
+  });
+
+  it("round-trips classifier hit records", () => {
+    const record = toClassifierHitRecord(hit);
+    const restored = fromClassifierHitRecord(record);
+    expect(restored.explanations).toEqual(hit.explanations);
+    expect(restored.classifier_id).toBe(hit.classifier_id);
+    expect(restored.direction).toBe(hit.direction);
+  });
+});