Connect VidXP Desktop to remote servers

[Sidra-009]

Summary

Closes #77

Allows VidXP Desktop to connect to an existing remote VidXP deployment instead of managing only local installations.

• Save and switch between named local and remote targets
• Validate compatibility and available capabilities before adopting a remote target
• Discover and support the server-configured authentication flow (via WWW-Authenticate challenge — no hardcoded auth scheme)
• Show connection, repository, model, and job readiness for the active target
• Open the appropriate browser/management surface for the selected target
• Remote targets remain fully server-owned — no local install, repair, or removal actions are offered for them

Changes

• desktop/src-tauri/src/target_profiles.rs — remote target modeling, persistence, HTTP-based validation, adoption, and revalidation
• desktop/src-tauri/src/lib.rs — Tauri commands for remote inspection/adoption/status, exhaustive target-kind handling
• desktop/src/tauri.ts — remote target types, profile fields, inspection types, IPC wrappers
• desktop/src/App.tsx — remote setup stage, navigation, activation flow
• desktop/src/components/TargetChoice.tsx — remote server option in target selection
• desktop/src/components/RemoteSetup.tsx (new) — remote URL/name/auth setup and compatibility preview
• desktop/src/components/TargetSummary.tsx — remote status, repository identity, model/config, job readiness; local-only controls hidden for remote targets
• desktop/src/styles.css — spacing for the technical summary block
• desktop/src/App.test.tsx — updated stale test to cover the new remote option

Validation

• cargo check --manifest-path desktop/src-tauri/Cargo.toml — pass
• npm --prefix desktop run typecheck — pass
• npm --prefix desktop run test — 47/47 pass

[SaadBazaz]

Hey @Sidra-009,
Thanks for the Pull Request.
As a starter, we require all contributors to "star" and "fork" the repo, in order to determine if there really is a human behind the wheel or an autonomous agent.
Please star the repo for our review to proceed.
Thanks!

[Sidra-009]

Hey @Sidra-009, Thanks for the Pull Request. As a starter, we require all contributors to "star" and "fork" the repo, in order to determine if there really is a human behind the wheel or an autonomous agent. Please star the repo for our review to proceed. Thanks!

ty for letting me know i have starred the repository, and the repository was already forked as the PR was submitted from my fork....... looking forward to your review......... ty