better cache

openspec/specs/wordpress-content-source/spec.md

@@ -0,0 +1,69 @@
+## Purpose
+
+Provide a build-time content source backed by a WordPress site via the `wp-json` REST APIs.
+
+## ADDED Requirements
+
+### Requirement: WordPress API configuration
+The system MUST allow configuring a WordPress content source using environment/config values:
+- WordPress base URL
+- credentials (username + password or application password) when required by the WordPress instance
+
+The WordPress base URL MUST be used to construct requests to the WordPress `wp-json` REST APIs.
+
+#### Scenario: Config provided
+- **WHEN** WordPress configuration values are provided
+- **THEN** the system can attempt to fetch WordPress content via `wp-json`
+
+### Requirement: Fetch posts
+The system MUST fetch the latest WordPress posts via `wp-json` and map them into an internal representation with:
+- stable ID
+- slug
+- title
+- excerpt/summary
+- content HTML
+- featured image URL when available
+- publish date/time and last modified date/time
+- category assignments (IDs and slugs when available)
+
+#### Scenario: Posts fetched successfully
+- **WHEN** the WordPress posts endpoint returns a non-empty list
+- **THEN** the system stores the mapped post items in the content cache for rendering
+
+### Requirement: Fetch pages
+The system MUST fetch WordPress pages via `wp-json` and map them into an internal representation with:
+- stable ID
+- slug
+- title
+- excerpt/summary when available
+- content HTML
+- featured image URL when available
+- publish date/time and last modified date/time
+
+#### Scenario: Pages fetched successfully
+- **WHEN** the WordPress pages endpoint returns a non-empty list
+- **THEN** the system stores the mapped page items in the content cache for rendering
+
+### Requirement: Fetch categories
+The system MUST fetch WordPress categories via `wp-json` and store them for rendering a category-based secondary navigation under the blog section.
+
+#### Scenario: Categories fetched successfully
+- **WHEN** the WordPress categories endpoint returns a list of categories
+- **THEN** the system stores categories (ID, slug, name) in the content cache for blog navigation
+
+### Requirement: Build-time caching
+WordPress posts, pages, and categories MUST be written into the repo-local content cache used by the site build.
+
+If the WordPress fetch fails, the system MUST NOT crash the entire build pipeline; it MUST either:
+- keep the last-known-good cached WordPress content (if present), or
+- store an empty WordPress dataset and allow the rest of the site to build.
+
+When the cache layer is configured and reachable, the WordPress ingestion MUST cache `wp-json` responses (or normalized outputs) using a TTL so repeated ingestion runs avoid unnecessary network requests and parsing work.
+
+#### Scenario: WordPress fetch fails
+- **WHEN** a WordPress API request fails
+- **THEN** the site build can still complete and the blog surface renders a graceful empty state
+
+#### Scenario: Cache hit avoids wp-json refetch
+- **WHEN** WordPress ingestion is executed within the configured cache TTL
+- **THEN** it uses cached data instead of refetching from `wp-json`