fix(sidebar): highlight conversations tab on nested conversation/transcript pages

[dembrane-sam-bot]

What this changes

• Aligned the nested conversation detail route path prefix (/conversations/:conversationId) with the list route path (/conversations), ensuring standard matching rules organically highlight the "Conversations" sidebar tab on all detail, transcript, and sub-pages without requiring custom force-active logic — Router.tsx, ProjectHomeView.tsx
• Refactored all internal links, redirection paths, breadcrumbs, search result navigations, and example webhook payloads across the frontend to use the updated /conversations/:conversationId path structure — 17 files modified (full list in diff)

Confidence

High. This is a very clean architecture-level alignment of the path prefix hierarchy that resolves the highlighting issue automatically using standard React Router configuration. Tested matching semantics and reference updates.

[github-actions]

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