Add cross-org resource discovery view in Odoo

[Soushi888]

Summary

Implement a "Discover Resources" menu item in Odoo that queries the Nondominium DHT for resources shared by other organizations. This is the core PoC demonstration of cross-org resource discovery.

Tasks

• Create a simple Odoo list view showing ResourceSpecifications fetched from the DHT
• Implement action_discover_resources() calling get_all_resource_specifications via call_zome()
• Implement action_discover_by_category() for filtered discovery using get_resource_specifications_by_category
• Add menu item under Inventory: "Nondominium → Discover Resources"
• Handle the empty state: show helpful message when no resources found

Design Notes

• No transient wizard needed — a basic list view is sufficient for the PoC
• Discovered resources displayed as transient records (not persisted in Odoo DB)
• For PoC, displaying spec name + description + category is sufficient
• Owner organization info requires zome_person bridge (future enhancement)

Cross-References

• Sensorica/nondominium-erp-bridge bridge/discovery.py — reference implementation

Acceptance Criteria

• Menu item appears under Inventory
• Discovers and displays resources from other organizations on the DHT
• Category-based filtering works
• Clean UI with helpful empty state

[Soushi888]

Concrete implementation plan: See #16 for the detailed implementation using a transient model + wizard. This issue remains as the high-level feature description. The wizard will support category-based search, availability checking, and a "Request Use" button linking to the Use Process wizard (#18).