Support discovering multiple DSH bundles in monorepos

[Weaxs]

Problem

dshfind currently checks only the repository root package.json when determining whether a repository contains a DSH bundle.

This does not work for monorepos where the root package is private and the actual bundles live under workspace directories.

For example, TGYD-helige/dsh-plugins contains three independently published bundles:

• packages/dsh-a2a → @amaster.ai/dsh-a2a
• packages/dsh-langfuse → @amaster.ai/dsh-langfuse
• packages/dsh-storage → @amaster.ai/dsh-storage

Each package declares dsh.bundle, but the root package does not. As a result, dshfind currently marks the repository as is_plugin: false.

Expected behavior

dshfind should support discovering multiple DSH bundles from a single repository and expose each bundle as a separate catalog item.

Each item should use its package name as its identity while retaining the repository URL and package subdirectory as source metadata.

Existing single-package repositories should continue working unchanged.

Possible approach

Either:

• discover bundle manifests through the root workspace configuration; or
• support an explicit repository-level configuration listing bundle directories.

An explicit configuration may be preferable if unrestricted workspace scanning is too expensive or ambiguous.