[Feature]: Data Product Publication Scope (end-to-end)

Parent PRD

#86

What to build

A thin vertical slice delivering scoped publication for Data Products end-to-end: schema, API, UI, marketplace fix, and data migration.

Replace the published Boolean column on data_products with publication_scope (string, default "none"), published_at (datetime), and published_by (string). Drop the old published column (clean break). Create a PublicationScope enum (none, domain, organization, external) and PublicationInfo Pydantic model in models/lifecycle.py. Implement POST /api/data-products/{id}/publish (with scope in body) and DELETE /api/data-products/{id}/publish endpoints. Enforce prerequisite: entity must be in active status to publish. Add auto-unpublish side effect to the deprecation transition (sets scope to "none"). Fix the existing get_published_products endpoint to filter by publication_scope != "none" instead of just status == "active". Migrate existing published=True rows to publication_scope="organization". Build a PublicationBadge component (lock/users/globe icons by scope). Add publish section to product detail page and inline pub icon in product list.

Refer to the parent PRD "Dimension 3: Publication" section for full design.

Acceptance criteria

• Alembic migration replaces published boolean with publication_scope, published_at, published_by on data_products; drops old published column
• Existing published=True rows migrated to publication_scope="organization" with published_at/published_by set from updated_at/updated_by
• PublicationScope enum and PublicationInfo Pydantic model created
• POST /api/data-products/{id}/publish with {scope} body works; rejects if status != "active"
• DELETE /api/data-products/{id}/publish sets scope to "none"
• Deprecating a product auto-sets publication_scope to "none"
• GET /api/data-products/published filters by publication_scope != "none" AND status == "active"
• PublicationBadge component renders correct icon per scope value
• Product detail page shows publication section with scope badge, published_by, published_at, publish/unpublish button
• Product list table shows inline publication scope icon
• Demo data files updated (no more published: true)
• Unit tests for publish/unpublish logic, status prerequisite, auto-unpublish on deprecation
• Component tests for PublicationBadge

Blocked by

• Blocked by #88 (renamed activate_product method, clean status enum)

User stories addressed

From PRD #86:

• User story 5: Publishing separate from activating
• User story 6: Publish with domain scope
• User story 12: Auto-unpublish on deprecation

Read parent PRD #86 and confirm prerequisite issue #88 is complete before starting. Begin with models/lifecycle.py, the data product publication endpoints, deprecation transition, migration, and product detail/list UI entry points. Done means all listed acceptance criteria pass, including migration, API and status behavior, UI badges, demo data, and unit/component tests.