* feat(a11y): add a Text size control and an OpenDyslexic font option
Text size: a Theme > Font & Layout control (Default / Larger) that scales the whole UI via CSS zoom, so the many hard-coded px sizes scale too (density only moves the root font-size). Stored globally so it persists across theme switches; applied early in the boot script to avoid a flash. OpenDyslexic: a dyslexia-friendly self-hosted font (SIL OFL 1.1), bundled as woff2 alongside Fira Code/Inter and wired into the Font select. Reuses the existing density/font pattern end to end; no new colours, spacing, or component styles.
* fix(a11y): keep modals on-screen at Larger text size
Inline vh heights on .modal-content overrode the ui-scale-125 max-height
compensation, so Cookbook (and the email/doc/skills/PDF modals) overflowed
the viewport at 125% — pushing the header and close button off-screen.
Let the compensation own those heights.
* fix(a11y): keep PDF export modal at its original 86vh on Default size
Resolve remove_directory_from_rag paths through the same PERSONAL_DIR confinement helper used by add_directory_to_rag before removal sinks are reached.
Lock the API key encryption key file to owner-only permissions on creation and when reading existing keys, with regression coverage for permissions and encryption roundtrip.
Clarify in the Docker install section that Apple Silicon Docker cannot use Metal GPU acceleration for Cookbook model serving and point users to the native Apple Silicon path.
Tom