feat(web): connect API over LAN and update featured agents

[Pericena]

Summary

This PR includes several frontend improvements focused on the overall user experience, API integration, Hire flow, wallet/network handling, and agent data.

Changes

Frontend

• Improved the Marketplace and category navigation.
• Updated agent listing and agent detail views.
• Improved the Hire flow and user experience.
• Improved activity history and notification sections.
• Updated signal chart components.
• Added improvements for loading, error, empty, and validation states.
• Improved responsive behavior for desktop and mobile.
• Updated wallet and network state handling.
• Improved the wrong-network experience.

API Integration

• Improved communication between the frontend and API.
• Updated frontend configuration for local network access.
• Added/updated environment configuration.
• Improved API response and error handling.

Hire Flow

• Improved the agent hiring flow.
• Improved Hire state management.
• Added Hire activity/log handling.
• Added frontend persistence for Hire state.
• Improved the user experience during the hiring process.

Agent Data

• Updated packages/indexer/fixtures/featured.json.
• Updated featured agent data used by the application.

Main Files Changed

• apps/web/src/features/account/
• apps/web/src/features/catalog/
• apps/web/src/features/hire/
• apps/web/src/features/signals/
• apps/web/src/lib/
• apps/web/src/providers/
• apps/web/src/routes/
• apps/web/vite.config.ts
• apps/web/.env.example
• packages/indexer/fixtures/featured.json

Validation

• Verified the frontend application runs correctly.
• Verified navigation between the main routes and categories.
• Verified wallet connection and network handling.
• Verified interaction with BNB Smart Chain Testnet.
• Reviewed the Hire flow and related frontend states.
• Verified that the intended changes are included in the PR.