Support Matrix

Runtime Targets

PHP: >= 8.0
WordPress: >= 6.6, modern admin screens plus native capability / nonce APIs
Modes: plugin-install mode and embedded mode
Runtime lifecycle: one isolated Runtime per bootstrap call; no process-wide runtime singleton

PHP quality gate: PHP 8.0, 8.1, 8.2, 8.3, 8.4
Asset build gate: @wordpress/scripts compiles resources/admin/index.js and resources/block-panel/index.js and verifies generated assets/build output
WordPress integration: default stable wp-env environment on PHP 8.2
WordPress multisite automation: dedicated wp-env run on ports 8890/8891
Browser smoke coverage: Playwright against plugin mode, embedded mode, classic admin containers, and multisite network settings in wp-env
REST contract browser coverage: Playwright single-site and multisite smoke runs exercise REST save, import, export, reset, and async data-source paths
Local browser smoke coverage can target an existing site through LERM_ADMIN_CONFIG_BASE_URL plus admin credentials
REST contract browser smoke coverage asserts that package actions avoid AdminConfig admin-ajax.php requests

PHP schema remains the source of truth for defaults and sanitization
REST endpoints expose schema/value reads plus save, reset, import/export, and async data-source operations
REST and non-JS saves share the same store validation path
Meta-backed runtime reads fall back to compiled defaults when context is missing through Runtime::all() and Runtime::get(); REST read endpoints return missing_store_context so JavaScript clients cannot silently hydrate against the wrong object
admin-post.php remains the supported no-JavaScript fallback for options pages
AdminConfig 0.3.0 removed its admin-ajax.php JavaScript transport; enhanced admin clients use REST while admin-post.php remains the no-JavaScript save path

Recursive PHP syntax checks
JavaScript syntax checks
JavaScript runtime contract checks for core schema state, context, error, default controls, dirty tracking, and block-panel REST orchestration helpers
Reproducible admin and block-panel script build checks
Built asset dependency extraction for wp-api-fetch
CI uploads generated assets/build/ as an artifact for WordPress browser and integration jobs; build output is not tracked in git
WPCS and PHPStan gates
PHPUnit unit coverage for compiler, schema helpers, registries, and diagnostics
PHPUnit smoke coverage for the bundled plugin and embedded examples
Real-WordPress integration tests for bootstraps, option/meta/site-option stores, and multisite network schema persistence
Playwright smoke coverage for plugin/embedded options pages, classic metabox/profile/taxonomy/comment screens, and the multisite network settings page
Playwright smoke coverage for block editor panel schema loading, primitive editing, choice/color controls, read-only/unsupported-control notices, local discard, validation-error replay, REST save persistence with post_id context, and no AdminConfig admin-ajax.php requests
Block editor field-status matrix in docs/block-editor-field-matrix.md
REST contract Playwright coverage for plugin-mode actions and multisite network settings

0.x is the extraction and hardening phase; expect fast iteration and occasional API tightening
1.0.0 starts the SemVer guarantee for public runtime, schema, and extension APIs
WordPress remains a runtime dependency rather than a Composer hard dependency

Broader browser regression coverage for richer advanced-field permutations and import/reset edge cases
A lighter no-Docker browser harness for contributors who cannot run wp-env
Higher-level relationship and remote-library field packages built on the async transport layer
Broader REST contract coverage for richer advanced-field permutations and import/reset edge cases