Salt & Cedar

A boutique residential brokerage demo built on WordPress's CPT + custom-meta + faceted catalog pattern. Custom listing CPT lives in a demo-local mu-plugin, a home_style taxonomy with six seeded terms, nine show_in_rest meta fields, and a shared Gutenberg block (sfp-blocks/listing-grid) — server-rendered with configurable post type so a future vehicle / rentals / equipment demo reuses the block with zero changes.

Architectural split worth naming:

• The CPT lives in the demo, not the platform. Real estate has prices and beds; vehicles have mileage and drivetrains — coupling the platform to "what kind of catalog is this" would be the wrong abstraction
• The block is the generic primitive (query any post type, render cards); the CPT is the domain model
• A future vehicle-listings demo registers its own vehicle CPT with its own meta, points the listing-grid block at it, and works

CPT details — saltcedar-listing-cpt.php (demo-local mu-plugin):

• CPT listing with has_archive: 'listings', single permalinks at /listings/{slug}/
• Taxonomy home_style with 6 seeded terms (mid-century, craftsman, contemporary, cottage, farmhouse, classic)
• Nine meta fields registered with register_post_meta(..., show_in_rest: true): price, beds, baths, sqft, lot_sqft, year_built, neighborhood, address, mls_id
• Sanitize callbacks wrapped in single-arg closures (PHP 8 arity-safe)

FSE templates:

• archive-listing.html — renders /listings/. Hero strip with eyebrow + intro paragraph; listing-grid block below set to query all listings sorted by menu_order. Three-column grid.
• single-listing.html — renders /listings/{slug}/. core/post-featured-image (16:9), core/post-terms for home_style, core/post-title in Fraunces, core/post-content (which contains an inline facts panel + narrative authored in the seed)

Six fictional PNW listings: Bayview Mid-Century, Madrona Bluff Craftsman, Westcott Bay Cottage, Queen Anne Contemporary, Vashon Forest Cabin, Eastsound Farmhouse — each with structured facts and 200-word narrative.