add account localization and switchable rooms

Centralize control and OBS copy in a shared TOML catalog, persist the selected locale per account, and broadcast language changes to component streams. Allow account owners to atomically switch their Bilibili room and restart the shared listener without changing component URLs.

Dockerfile

@@ -2,6 +2,7 @@ FROM node:22-bookworm-slim AS web-build
 WORKDIR /app/apps/overlay
 COPY apps/overlay/package.json apps/overlay/package-lock.json ./
 RUN npm ci
+COPY resources /app/resources
 COPY apps/overlay ./
 RUN npm run build
 
@@ -14,6 +15,7 @@ COPY apps/server-rust/Cargo.toml apps/server-rust/Cargo.lock ./apps/server-rust/
 COPY --from=libilibili . /libilibili
 COPY apps/server-rust/src ./apps/server-rust/src
 COPY apps/server-rust/migrations ./apps/server-rust/migrations
+COPY resources ./resources
 RUN --mount=type=cache,target=/usr/local/cargo/registry \
     --mount=type=cache,target=/app/target-cache \
     CARGO_TARGET_DIR=/app/target-cache cargo build --manifest-path apps/server-rust/Cargo.toml --release && \