New settings form for creating and editing custom page metadata
(title, slug, meta description, published, nav settings). Pages
index shows custom pages section with draft badges and delete.
Editor shows settings button for custom pages, hides reset to
defaults. 20 new tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Stage 6 of the page builder: admin UI at /admin/pages for managing
page layouts. Page list shows all 14 pages grouped by category.
Editor supports reorder (up/down), add, remove, duplicate, save,
and reset to defaults. DirtyGuard JS hook warns on unsaved changes.
ARIA live regions announce block operations for screen readers.
Also: regenerate admin icons (81 rules via mix task with @layer
wrapping), add gen_smtp dep for SMTP email adapter, add :key to
page renderer block loop for correct LiveView diffing.
1309 tests, 0 failures.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
