Remove ember-modify-based-class-resource, derive from data instead

[NullVoxPopuli-ai-agent]

Removes ember-modify-based-class-resource from @universal-ember/table. The Table is a plain class now, and every value is derived from the config that it was constructed with.

This unblocks josemarluedke/frontile#415. Two bundled copies of ember-modify-based-class-resource register the same usable type twice, which throws type may not overlap with an existing usable and blanks the page. Apps no longer need the direct-dependency or Vite-alias workaround.

What changed

• Table no longer extends Resource. The constructor takes (parent, config) and calls link(this, parent) from reactiveweb/link, which gives the table the parent's owner and destroys it with the parent.
• modify() is gone. preferences is a cached getter, so a preferences thunk that reads tracked data restores again on its own.
• Plugin instances survive a preferences change now. Before, any consumed arg change reassigned args and rebuilt every plugin.
• ember-modify-based-class-resource and ember-resources are dropped from dependencies. Nothing in src imports either one. reactiveweb brings ember-resources itself.

Breaking changes

Before	After
@use table = headlessTable({ ... })	table = headlessTable(this, { ... })
table.args.named	table.config
scroll container reset on config change	call table.resetScrollContainer()

The two-argument headlessTable(this, { ... }) form is unchanged, so most consumers need no code change. frontile is one of them. The one-argument form asserts in development with a message that says what to do.

Docs: docs-app/src/templates/1-get-started/upgrading.gjs.md.

Verification

• pnpm turbo --filter test-app test: 187 pass, 0 fail. This covers the multi-table shared-preferences reactivity test, plus a new test for an owner that is assigned after construction.
• pnpm turbo lint: 4 packages pass, types and format included.
• pnpm turbo build: dist/-private/table.js imports reactiveweb only.

Please label this breaking.

🤖 Generated with Claude Code

[NullVoxPopuli]

link sets up teh owner, so we can getOwner + assert here, and return the owner, and no more

[NullVoxPopuli-ai-agent]

Moved the assert into the owner getter, so plugins just reads it. Kept a fallback to the parent, because link alone does not cover every case.

A parent can receive its owner after the table is created. A class field initializes before setOwner runs on a manually constructed object, so link runs while getOwner(parent) is still undefined. 41 setups in the test suite do this:

ctx = new DefaultOptions(); // the table is built in a class field here
setOwner(ctx, this.owner);

With getOwner(this) + assert and nothing else, that suite goes from 187 pass / 0 fail to 24 pass / 45 fail, every failure being The Table does not have an owner.

So the getter now is:

get #owner(): Owner {
  let owner = getOwner(this);

  if (!owner) {
    owner = getOwner(this.#parent);

    assert(`The Table does not have an owner. cannot create a plugin without an owner`, owner);

    setOwner(this, owner);
  }

  return owner;
}

Back to 187 pass / 0 fail. If you would rather drop the late-owner support and make those setups call setOwner before they build the table, say so and I will change the tests instead.