packages CLI: resolve bare names from the Official Package Collection #302

This was generated by AI during triage.

Agent Brief

Category: enhancement
Summary: Resolve a bare Package name against the first-party monorepo.

Current behavior:
There is no Official Package Collection and no bare-name resolver.

Desired behavior:
lyracore packages add <name> resolves one top-level Package directory from LyraCoreProject/packages. The CLI installs only that directory, records the collection repository and exact commit as its Package Source, and uses the same validation, trust-review, confirmation, and preflight contract as other sources.

Key interfaces:

• Bare-name form of lyracore packages add
• Official Package Collection repository
• Provenance stamp for collection Package and exact revision

Acceptance criteria:

• A known top-level Package installs by bare name.
• An unknown or ambiguous name fails with no partial installation.
• The installed provenance identifies the collection, Package name, and exact commit.
• Updating collection metadata cannot silently change an installed Package revision.
• Third-party URLs and local folders keep their existing resolution rules.

Out of scope:

• A general Package registry
• Multiple first-party repositories