The /memory dashboard page rendered a black screen when MemoryCategory::Custom
was serialized by serde's derived impl as a tagged object {"custom":"..."} but
the frontend expected a plain string. No navigation was possible without using
the browser Back button.
Changes:
- src/memory/traits.rs: replace derived serde impls with custom serialize
(delegates to Display, emits plain snake_case string) and deserialize
(parses known variants by name, falls through to Custom(s) for unknown).
Adds memory_category_serde_uses_snake_case and memory_category_custom_roundtrip
tests. No persistent storage migration needed — all backends (SQLite, Markdown,
Postgres) use their own category_to_str/str_to_category helpers and never
read serde-serialized category values back from disk.
- web/src/App.tsx: export ErrorBoundary class so render crashes surface a
recoverable UI instead of a black screen. Adds aria-live="polite" to the
pairing error paragraph for screen reader accessibility.
- web/src/components/layout/Layout.tsx: wrap Outlet in ErrorBoundary keyed
by pathname so the navigation shell stays mounted during a page crash and
the boundary resets on route change.
Co-authored-by: Argenis <theonlyhennygod@gmail.com>
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