[EPIC] Add slide-in panel to display node information on click

[ChristianHuehn]

Feature request

Description

As a visualization user, I want to see detailed information about a node when I click on it in a slide-in panel so that I can understand the node's properties, dependencies, and relationships without leaving the graph view.

Acceptance criteria

• Clicking a node opens a slide-in panel from the right side with smooth animations
• Panel displays basic node information (name, type, file path)
• Panel shows incoming and outgoing dependencies with counts
• Panel displays cycle information if the node is part of any dependency cycles
• File path has a copy-to-clipboard button
• Panel can be closed via close button (X), clicking outside, or pressing ESC key
• Clicking another node updates the panel content without closing it
• Panel is responsive and works on different screen sizes

Assumptions & Exclusions

• Panel slides in from the right side only
• Dependencies are displayed as lists with counts
• Only file path has copy-to-clipboard functionality (not other fields)
• Panel width is fixed (not resizable in initial implementation)

Development notes (optional Task Breakdown)

• Create slide-in panel component with layout and animations (Create slide-in panel component with layout and animations #137)
• Implement node selection state management (Implement node selection state management #138)
• Display basic node information with copy-to-clipboard (Display basic node information with copy-to-clipboard #139)
• Add dependencies display (incoming/outgoing) (Add dependencies display (incoming/outgoing) #140)
• Add cycle information display (Add cycle information display #141)
• Implement close interactions (X, ESC, click outside, node switching) (Implement close interactions (X, ESC, click outside, node switching) #142)

Open questions

None currently - requirements clarified with user.