Tactical Media Broadcast Hub — initial release

Self-hosted multi-platform broadcast newsroom for activist collectives:
publishing pipeline with group approval and DST-proof scheduling, TweetDeck-style
column wall with hostile-content-safe rendering, live control room with Auto
Director, bridged chat governance with polls and quorum, distributed sandboxed
transcode workers, encrypted content-addressed archive, monthly analytics.

MIT licensed. See README.md and docs/.

packages/scheduling/src/verify.test.ts

@@ -0,0 +1,27 @@
+import { describe, expect, it } from "vitest";
+import { nextOccurrences } from "./occurrences_extra.js";
+
+const ISO = (o: { fireAtUtc: number }) => new Date(o.fireAtUtc).toISOString().replace(".000Z", "Z");
+
+describe("count boundary semantics", () => {
+  it("never returns more than count", () => {
+    for (const count of [1, 2, 5, 17]) {
+      const out = nextOccurrences({ cron: "*/15 * * * *", timezone: "America/New_York" }, "2024-03-09T00:00:00Z", count);
+      expect(out.length).toBe(count);
+    }
+  });
+  it("stops at the collapse edge with the latest collapsed label", () => {
+    // Exclusive from 05:00Z (== 00:00 local): the first slot is 00:15. The
+    // eighth occurrence is the collapse edge — nominal slots 02:00..03:00 all
+    // materialize onto 07:00Z — and it carries the LATEST label (03:00), with
+    // nothing beyond the edge emitted.
+    const out = nextOccurrences({ cron: "*/15 * * * *", timezone: "America/New_York" }, "2024-03-10T05:00:00Z", 8);
+    expect(out.length).toBe(8);
+    expect(out.map(ISO)[7]).toBe("2024-03-10T07:00:00Z");
+    expect(out[7]!.nominalLocal).toBe("2024-03-10T03:00");
+    // The same result whether the boundary is reached with 8 or 80 requested,
+    // because generation stops at the first slot after the boundary instant.
+    const wide = nextOccurrences({ cron: "*/15 * * * *", timezone: "America/New_York" }, "2024-03-10T05:00:00Z", 80);
+    expect(wide[7]!.nominalLocal).toBe("2024-03-10T03:00");
+  });
+});