Add hide component feature, usage indicators, and Docker support

- Add is_hidden field to hide components from configurator
- Add colored dot indicator showing component usage status:
  - Green: available in configurator
  - Cyan: used as source for meta-articles
  - Gray: hidden from configurator
- Optimize price recalculation with caching and skip unchanged
- Show current lot name during price recalculation
- Add Dockerfile (Alpine-based multi-stage build)
- Add docker-compose.yml and .dockerignore

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,54 @@
+# Build stage
+FROM golang:1.24-alpine AS builder
+
+RUN apk add --no-cache git ca-certificates tzdata
+
+WORKDIR /app
+
+# Copy go mod files first for better caching
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the binary
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
+    -ldflags="-s -w" \
+    -o /app/quoteforge \
+    ./cmd/server
+
+# Final stage
+FROM alpine:3.19
+
+RUN apk add --no-cache ca-certificates tzdata
+
+# Create non-root user
+RUN adduser -D -g '' appuser
+
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /app/quoteforge .
+
+# Copy web templates and static files
+COPY --from=builder /app/web ./web
+
+# Copy migrations
+COPY --from=builder /app/migrations ./migrations
+
+# Copy example config (actual config should be mounted)
+COPY --from=builder /app/config.example.yaml ./config.example.yaml
+
+# Set ownership
+RUN chown -R appuser:appuser /app
+
+USER appuser
+
+EXPOSE 8080
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1
+
+ENTRYPOINT ["/app/quoteforge"]