feat: add catalog name completion in package.json

[RYGRIT]

There are currently two problems.

1. Catalog smart categorization prompts take a while to appear
2. Setting the range will cause catalog completion to not be displayed.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: bb43ebd1-bf29-4f68-9aee-1521cf6ae9df

📥 Commits

Reviewing files that changed from the base of the PR and between 728f260 and 3e8a0aa.

📒 Files selected for processing (4)

• playground/package.json
• playground/pnpm-workspace.yaml
• src/core/workspace.ts
• src/providers/completion-item/catalog.ts

🚧 Files skipped from review as they are similar to previous changes (2)

• src/providers/completion-item/catalog.ts
• src/core/workspace.ts

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📝 Walkthrough

Walkthrough

Adds a public async getCatalogs(): Promise<CatalogsInfo | undefined> to WorkspaceContext and replaces this.#catalogs!.promise with this.#catalogs?.promise in loadPackageManifestInfo. Introduces CatalogCompletionItemProvider (trigger ':') that creates completion items from workspace catalogs and registers it for files matching **/<PACKAGE_JSON_BASENAME> via a new watchEffect, while retaining the existing version-based completion provider. Updates playground package metadata to reference a catalog: version and adds catalog entries in pnpm-workspace.yaml.

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	The pull request description accurately identifies specific problems being addressed by the changeset, which implements catalog name completion in package.json.

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[coderabbitai]

Actionable comments posted: 1

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 289ada72-3744-4f7b-9429-fe0db80925d6

📥 Commits

Reviewing files that changed from the base of the PR and between b5cacf5 and ae8b0e5.

📒 Files selected for processing (3)

• src/core/workspace.ts
• src/providers/completion-item/catalog.ts
• src/providers/completion-item/index.ts

[9romise]

Thank you!