chore: fix build dependencies and frontend config

- Bump Docker SDK, downgrade otel deps for Go 1.24 compatibility
- Fix duplicate i18n import in InstanceCard
- Fix SvelteKit prerender/strict config for SPA build
- Update Dockerfile with GOTOOLCHAIN=auto
- Generate package-lock.json and go.sum

WIP: still resolving Go 1.24 vs otel transitive dep versions

Dockerfile

@@ -9,19 +9,23 @@ COPY web/ ./
 RUN npm run build
 
 # Stage 2: Build Go binary
-FROM golang:1.23-alpine AS backend-builder
+FROM golang:1.24-alpine AS backend-builder
 
 RUN apk add --no-cache git ca-certificates
 
 WORKDIR /build
 COPY go.mod go.sum ./
+
+# The project requires Go 1.25 (transitive dep from Docker SDK -> otelhttp).
+# GOTOOLCHAIN=auto lets Go 1.24 download the required toolchain automatically.
+ENV GOTOOLCHAIN=auto
 RUN go mod download
 
 COPY . .
 # Copy built frontend into the expected embed location.
 COPY --from=frontend-builder /build/web/build ./web/build
 
-RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /docker-watcher ./cmd/server
+RUN GOTOOLCHAIN=auto CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /docker-watcher ./cmd/server
 
 # Stage 3: Minimal runtime image
 FROM alpine:3.19