History tool default URL points to a 404 path

[thehabes]

Summary

The default history tool registration in classes/Tools/Tools.js:221 points to https://app.t-pen.org/components/line-history/index.js, which returns 404 Not Found. There is no components/line-history/ directory in tpen3-interfaces. The component is actually published on GitHub Pages from the tpen-line-history repo.

As a result, every project created with the default tool set inherits a broken history tool URL. In the splitscreen interface (components/simple-transcription/index.js) the script branch tries to load the URL and fails with net::ERR_ABORTED 404, so the <tpen-line-history> element never gets defined and the pane stays blank.

Reproduction

1. Open any project with the default tool set in the simple-transcription splitscreen.
2. Activate the History tool.
3. DevTools console shows: GET https://app.t-pen.org/components/line-history/index.js net::ERR_ABORTED 404 (Not Found).

Suggested fix

In classes/Tools/Tools.js, change line 221:

-            "url": "https://app.t-pen.org/components/line-history/index.js",
+            "url": "https://centerfordigitalhumanities.github.io/tpen-line-history/tpen-line-history.js",

(The filename is tpen-line-history.js, matching the repo's package.json#main — not index.js.)

Migration note for existing projects

Existing project documents in MongoDB carry the bad URL embedded in their tools array. After the source fix lands, a one-time update is needed:

db.projects.updateMany(
  { "tools.toolName": "history" },
  { $set: { "tools.$[t].url": "https://centerfordigitalhumanities.github.io/tpen-line-history/tpen-line-history.js" } },
  { arrayFilters: [ { "t.toolName": "history", "t.url": "https://app.t-pen.org/components/line-history/index.js" } ] }
)