Content Audit: Verify upload docs and fix hashtag bug

- Audited `content/docs/guides/upload-content.md` against codebase.
- Verified claims regarding file types, size limits, permissions, and CORS.
- Fixed a bug in `js/services/videoNotePayload.js` where user-entered hashtags were dropped.
- Added regression test `tests/unit/services/videoNotePayload.test.mjs`.
- Generated audit artifacts.
- Created completion log.

Co-authored-by: PR0M3TH3AN <[email protected]>

tests/unit/services/videoNotePayload.test.mjs

@@ -0,0 +1,35 @@
+import { test, describe, it } from "node:test";
+import assert from "node:assert";
+import { normalizeVideoNotePayload } from "../../../js/services/videoNotePayload.js";
+
+describe("normalizeVideoNotePayload", () => {
+  it("should normalize hashtags from 'hashtags' property", () => {
+    const input = {
+      title: "Test Video",
+      url: "https://example.com/video.mp4",
+      nip71: {
+        hashtags: ["one", "two"],
+      },
+    };
+
+    const { payload, errors } = normalizeVideoNotePayload(input);
+    assert.strictEqual(errors.length, 0);
+    assert.deepStrictEqual(payload.nip71.hashtags, ["one", "two"]);
+  });
+
+  it("should normalize hashtags from 't' property (Bug Fix)", () => {
+    const input = {
+      title: "Test Video",
+      url: "https://example.com/video.mp4",
+      nip71: {
+        t: ["one", "two"],
+      },
+    };
+
+    const { payload, errors } = normalizeVideoNotePayload(input);
+    assert.strictEqual(errors.length, 0);
+
+    // This assertion is expected to FAIL before the fix
+    assert.deepStrictEqual(payload.nip71.hashtags, ["one", "two"], "Hashtags should be extracted from 't' property");
+  });
+});