added sharding and partitioning nodes

[Dhanwi]

This PR introduces the new Data Partitioning and Sharding technique components to the simulator, resolving #63.

These new nodes allow users to model data distribution, request routing, and physical/logical dataset segmentation at the technique and architecture level.

Changes Made

This PR modifies the core node registry, UI mapping, and styling to cleanly integrate four new node types (hashing, sharding, partition-node, shard-node):

1. src/renderer/src/config/nodeRegistry.ts

   • Added standard library imports from lucide-react for the new icons: Hash, Boxes, SplitSquareHorizontal, and SquareStack.
   • Populated the NODE_REGISTRY with objects for the four new nodes (defined as serviceNode), complete with their load/throughput default metrics and visual descriptors.

2. src/renderer/src/config/themeConfig.ts

   • Added custom color palettes to the THEME_CONFIG object for each new node key (hashing -> Fuchsia, sharding -> Indigo, partition -> Cyan, shard -> Emerald) to maintain consistent aesthetics with existing components.

3. src/renderer/src/config/catalogConfig.ts

   • Introduced a new top-level Data Partitioning category to the left-hand UI sidebar catalog.
   • Pushed the four new node IDs to this category so they are draggable onto the canvas.

4. src/renderer/src/components/features/nodes/ServiceNode.tsx

   • Exported the newly added Lucide icons and successfully mapped them into the component's internal ICON_LOOKUP routing object, ensuring the canvas dynamically renders them once dropped.

Output

[Copilot]

Pull request overview

This PR adds “Data Partitioning and Sharding” technique nodes to the renderer’s component library so users can model hashing/sharding flows in diagrams, addressing issue #63.

Changes:

• Added four new node definitions (hashing, sharding, partition-node, shard-node) to the core node registry with default metrics and Lucide icons.
• Extended theming to include dedicated color palettes for the new technique nodes.
• Added a new sidebar catalog category (“Data Partitioning”) containing the four new draggable nodes.
• Updated ServiceNode icon routing to render the new icons on-canvas.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/renderer/src/config/themeConfig.ts	Adds theme keys and Tailwind classes for hashing/sharding/partition/shard lookups.
src/renderer/src/config/nodeRegistry.ts	Registers the four new nodes with icons, lookup keys, and default data.
src/renderer/src/config/catalogConfig.ts	Adds a new catalog category and exposes the new nodes in the sidebar.
src/renderer/src/components/nodes/ServiceNode.tsx	Extends ICON_LOOKUP so the new node iconKeys render correct Lucide icons.

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