prs: add Last Reviewer field

CHANGELOG.md

@@ -1,3 +1,7 @@
+## Unreleased
+
+- add `Last Reviewer` PR field, who left the most recent submitted review; refreshed on open PRs too
+
 ## v0.4.0 (2026-09-23)
 
 - add `Reviewed At` PR field, the date of the most recent submitted review; refreshed on open PRs too

cli/cmds.go

@@ -74,7 +74,7 @@ to override the default field list, and --dry-run to preview.`,
 		PreRunE:       ValidateParams([]string{"token", "project-owner", "project-number"}),
 		RunE:          CmdPRsRefresh,
 	}
-	refreshCmd.Flags().Bool("include-open", false, "also refresh open prs, limited to fields safe without full pr data (PR#, User, Created At, Open Days, Reviewed By, Approved By, Changes Requested By, Reviewed At)")
+	refreshCmd.Flags().Bool("include-open", false, "also refresh open prs, limited to fields safe without full pr data (PR#, User, Created At, Open Days, Reviewed By, Approved By, Changes Requested By, Reviewed At, Last Reviewer)")
 	if err := viper.BindPFlag("include-open", refreshCmd.Flags().Lookup("include-open")); err != nil {
 		return nil, fmt.Errorf("error binding 'include-open' flag: %w", err)
 	}

cli/cmds_prs_fields.go

@@ -209,6 +209,15 @@ var PRFields = map[string]PRFieldDef{
 			return ctx.PR.ReviewedAt.Format(time.RFC3339)
 		},
 	},
+	"Last Reviewer": {
+		Type: gh.ItemValueTypeText,
+		ComputeFn: func(ctx PRFieldContext) any {
+			if ctx.PR.LastReviewer == "" {
+				return nil // never reviewed
+			}
+			return ctx.PR.LastReviewer
+		},
+	},
 	"Filtered Review Count": {
 		Type: gh.ItemValueTypeNumber,
 		ComputeFn: func(ctx PRFieldContext) any {

cli/cmds_prs_refresh.go

@@ -14,13 +14,13 @@ import (
 // prRefreshDefaultFields are the fields refreshed by default for closed/merged PRs. Fields needing
 // data we don't fetch here (review counts, waiting days) are excluded so we don't overwrite real
 // values with zeros; use --pr-populate-fields to override.
-var prRefreshDefaultFields = []string{"Status", "PR#", "User", "Open Days", "Created At", "Closed At", "Merged At", "Merged By", "Reviewed By", "Approved By", "Changes Requested By", "Reviewed At", "CI", "Mergeable"}
+var prRefreshDefaultFields = []string{"Status", "PR#", "User", "Open Days", "Created At", "Closed At", "Merged At", "Merged By", "Reviewed By", "Approved By", "Changes Requested By", "Reviewed At", "Last Reviewer", "CI", "Mergeable"}
 
 // prRefreshOpenFields are the fields safe to refresh on open PRs with --include-open: the REST
 // lookup can't see the review decision, so Status would incorrectly knock "Approved" PRs back
 // to "Waiting", and waiting/count data isn't available at all. CI/Mergeable are fetched
 // separately via GraphQL when needed.
-var prRefreshOpenFields = map[string]bool{"PR#": true, "User": true, "Created At": true, "Open Days": true, "Reviewed By": true, "Approved By": true, "Changes Requested By": true, "Reviewed At": true, "CI": true, "Mergeable": true}
+var prRefreshOpenFields = map[string]bool{"PR#": true, "User": true, "Created At": true, "Open Days": true, "Reviewed By": true, "Approved By": true, "Changes Requested By": true, "Reviewed At": true, "Last Reviewer": true, "CI": true, "Mergeable": true}
 
 // CmdPRsRefresh walks the project board itself and refreshes fields on PR items that are now
 // closed or merged, rather than syncing PRs from a repo. This catches PRs that were added while
@@ -67,7 +67,7 @@ func CmdPRsRefresh(_ *cobra.Command, _ []string) error {
 
 	needReviews, needChangesRequested, needMergeable := false, false, false
 	for _, fieldName := range prFields {
-		if fieldName == "Reviewed By" || fieldName == "Approved By" || fieldName == "Changes Requested By" || fieldName == "Reviewed At" {
+		if fieldName == "Reviewed By" || fieldName == "Approved By" || fieldName == "Changes Requested By" || fieldName == "Reviewed At" || fieldName == "Last Reviewer" {
 			needReviews = true
 		}
 		if fieldName == "Changes Requested By" {
@@ -198,6 +198,7 @@ func CmdPRsRefresh(_ *cobra.Command, _ []string) error {
 				login := review.GetUser().GetLogin()
 				if review.GetState() != "PENDING" && review.GetSubmittedAt().After(pr.ReviewedAt) {
 					pr.ReviewedAt = review.GetSubmittedAt().Time
+					pr.LastReviewer = login
 				}
 				switch review.GetState() {
 				case "APPROVED":

lib/gh/pr_gql.go

@@ -34,6 +34,7 @@ type PullRequest struct {
 	MergedAt                   time.Time
 	MergedBy                   string
 	ReviewedAt                 time.Time // when the most recent submitted review (any state except pending) was left, zero when unreviewed
+	LastReviewer               string    // who left that review
 	Draft                      bool
 	Milestone                  string
 	Mergeable                  string // MERGEABLE, CONFLICTING, or UNKNOWN (github may still be computing)
@@ -271,6 +272,7 @@ func (q pullRequestsQuery) flatten(reviewers map[string]struct{}) []PullRequest
 		for _, review := range pullRequest.Reviews.Nodes {
 			if review.State != string(githubv4.PullRequestReviewStatePending) && review.SubmittedAt.After(pr.ReviewedAt) {
 				pr.ReviewedAt = review.SubmittedAt
+				pr.LastReviewer = review.Author.Login
 			}
 
 			// requesters ordered by their first change request, comment counts summed across all of them