fix(store): match project identity in analytics

[upsetbit]

Summary

Fixes #291.

Local analytics now applies --project using the same identity-aware substring semantics as timeline/search.

What changed

• Reused applyProjectMatch in the analytics query builder.
• ProjectMatch now spans project_path, project_remote, and project_marker for all local analytics reports.
• Added a regression test covering path, remote, and marker matches.

Validation

• go test ./internal/store -run 'TestAnalyticsProjectMatchSpansPathRemoteMarker|TestAnalytics' -count=1
• go test ./internal/store/... -race
• go test ./internal/cli/... -race
• go build -o ./bin/prosa ./cmd/prosa