feat(desktop): add Projects as first-class top-level view

[wesbillman]

Summary

• Adds Projects to the desktop sidebar as a top-level navigation entry (between Pulse and Agents)
• /projects route with dense operational project list sourced from kind:30617 (NIP-34 repo announcements)
• /projects/$projectId route with detail page showing clone URLs, web link, resolved contributors with avatars
• Data fetching via relayClient.fetchEvents() with NIP-33 dedup and 60s stale time

Details

Navigation & routing:

• AppView type extended with "projects", deriveShellRoute() updated
• goProjects() and goProject(id) navigation functions
• TanStack file-based routes with lazy loading and Suspense

Data layer (features/projects/hooks.ts):

• useProjectsQuery() — fetches kind:30617 events, deduplicates by pubkey:kind:d-tag
• useProjectQuery(id) — targeted #d tag filter query (not capped by list limit)
• Multi-value clone URL parsing (tag.slice(1) for single ["clone", url1, url2] tags)
• Composite pubkey:d IDs for React key uniqueness
• KIND_REPO_ANNOUNCEMENT constant in shared/constants/kinds.ts

UI:

• Keyboard-accessible project cards (button overlay pattern, matching WorkflowCard)
• Error/empty/loading states with retry buttons
• Owner and contributors resolved to display names via useUsersBatchQuery + resolveUserLabel
• UserAvatar for contributor display
• isSafeUrl gate on web URLs (extracted to shared/lib/url.ts, shared with DiffMessage)

Notable NITs (not addressed)

• No unit tests for hooks or isSafeUrl (desktop has no vitest/jest infra — e2e only)
• setTimeout cleanup in CloneUrlRow copy button
• Loading skeleton reuses CardListLoadingBody (renamed from WorkflowsLoadingBody)

Test plan

• Click Projects in sidebar → navigates to /projects, shows project list
• Click a project card → navigates to /projects/$projectId, shows detail
• Detail page shows resolved display names and avatars for owner/contributors
• Clone URLs show all URLs (HTTPS + SSH) from multi-value tag
• Error state: disconnect relay → shows error with Retry button
• Empty state: relay with no repos → shows "No projects yet"
• Keyboard: Tab to project card, press Enter → navigates to detail
• Direct URL navigation to /projects/$projectId works (targeted query)
• Web URL with javascript: scheme does not render as a link

🤖 Generated with Claude Code

[wesbillman]