feat: import device type from NetBox YAML

[ggfevans]

Parent Epic

Part of #71 (Network Interface Visualization and Connectivity)

Summary

Allow users to import device types from NetBox devicetype-library YAML format.

Acceptance Criteria

• Parse NetBox device-type YAML format
• Map NetBox fields to Rackula schema
• Handle missing fields (add required Rackula fields: colour, category)
• Import interfaces array
• Import console-ports, power-ports (mapped to appropriate types)
• Validate imported data against Zod schema
• Show import preview before applying
• Handle import errors gracefully

Import Methods

1. Paste YAML - Text area for pasting YAML content
2. Upload file - File picker for .yaml/.yml files
3. URL import (future) - Fetch from GitHub raw URL

Field Mapping

NetBox Field	Rackula Field	Notes
manufacturer	manufacturer	Direct
model	model	Direct
slug	slug	Direct
u_height	u_height	Direct
is_full_depth	is_full_depth	Direct
interfaces	interfaces	Map type field
-	colour	User must select
-	category	Infer or user select

UI Design

┌─────────────────────────────────┐
│ Import from NetBox YAML         │
├─────────────────────────────────┤
│ ○ Paste YAML  ○ Upload File     │
│                                 │
│ ┌─────────────────────────────┐ │
│ │manufacturer: Cisco          │ │
│ │model: C9300-48P             │ │
│ │...                          │ │
│ └─────────────────────────────┘ │
│                                 │
│ [Parse]                         │
│                                 │
│ Preview:                        │
│ ┌─────────────────────────────┐ │
│ │ Cisco C9300-48P             │ │
│ │ 1U, 48 interfaces           │ │
│ │ Category: [Network ▼]       │ │
│ │ Color: [■ Pick color]       │ │
│ └─────────────────────────────┘ │
│                                 │
│ [Cancel]              [Import]  │
└─────────────────────────────────┘

Dependencies

• feat: expand InterfaceTemplate type and Zod schema #247 (InterfaceTemplate schema)

References

• NetBox devicetype-library: https://github.com/netbox-community/devicetype-library
• Schema research: docs/research/netbox-interface-cable-schema.md

[ggfevans]

Fixed in 4abd7af. The DevicePalette expanded view was truncated during the NetBox import feature merge. Restored the missing search container, device list accordion, hidden file input, and actions area.