feat: clean identifiers for Marko component auto-imports

[DylanPiercey]

Marko components that are auto-discoverable as tags (files under a components/tags directory) now name their default export's binding, so TypeScript offers a clean identifier for auto-imports instead of the file-derived default:

• components/my-button.marko → import MyButton from "..." (was MyButtonMarko)
• components/foo/index.marko → import Foo (was import index)

This works natively in the language server, the ts-plugin, and @marko/type-check — TypeScript indexes the component under its real name, so it's discoverable by that name too.

The name is the PascalCased tag name (components/foo.marko, components/foo/index.marko, and components/foo/foo.marko all → Foo; same under tags/). It's skipped — keeping the plain anonymous export default — when the file isn't discoverable, when the tag name wouldn't be a valid identifier (e.g. 3d-view), or when the name already appears in the source (a cheap conservative check that avoids redeclaring an existing binding).

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Generated by Claude Code

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🦋 Changeset detected

Latest commit: 5c7a4a7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@marko/language-tools	Patch

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📥 Commits

Reviewing files that changed from the base of the PR and between 379559f and 5c7a4a7.

⛔ Files ignored due to path filters (37)

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📒 Files selected for processing (4)

• .changeset/component-auto-import-names.md
• packages/language-server/src/__tests__/component-auto-import.test.ts
• packages/language-tools/src/extractors/script/index.ts
• packages/language-tools/src/extractors/script/util/get-component-name.ts

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