refactor: load settings once per run and reuse shared helpers

The application caches the settings snapshot and reloads it only after
an update through the store, so output and prompt helpers no longer
read and parse config.yml and hosts.yml several times per command.
canPrompt and chooser replace the inline prompt-policy checks.

Checks are tallied by one services.Tally, terminal.Plural replaces the
two app copies, refKind.article/noun replace the comment group's own
words, list commands use servicePage, and web URLs are built by
repositoryURL and webURL in browser.go.

Signed-off-by: bircni <bircni@icloud.com>

internal/app/checks.go

@@ -52,7 +52,8 @@ tea exits with 8 while checks are pending and with 1 when a check failed, like g
 			if err != nil {
 				waiting := "checks to be reported"
 				if len(latest) > 0 {
-					waiting = plural(pendingChecks(latest), "pending check")
+					_, pending, _ := services.Tally(latest)
+					waiting = terminal.Plural(pending, "pending check")
 				}
 				return timeoutError(err, timeout, "waiting for %s", waiting)
 			}
@@ -94,45 +95,18 @@ $ tea pr checks 13 --watch && tea pr merge 13`
 
 // checksOutcome is the exit status of checks: 1 when one failed, 8 while any is pending.
 func checksOutcome(items []services.Check) error {
-	pending := false
-	for _, item := range items {
-		switch {
-		case item.Pending():
-			pending = true
-		case !item.Passed():
-			return clierr.Quiet(clierr.Failure)
-		}
-	}
-	if pending {
+	switch failing, pending, _ := services.Tally(items); {
+	case failing > 0:
+		return clierr.Quiet(clierr.Failure)
+	case pending > 0:
 		return clierr.Quiet(clierr.Pending)
 	}
 	return nil
 }
 
-// pendingChecks counts the checks that have not finished.
-func pendingChecks(items []services.Check) int {
-	pending := 0
-	for _, item := range items {
-		if item.Pending() {
-			pending++
-		}
-	}
-	return pending
-}
-
 // checkCounts words how the checks stand: "0 failing, 1 successful, and 2 pending checks".
 func checkCounts(items []services.Check) string {
-	var failing, passed, pending int
-	for _, item := range items {
-		switch {
-		case item.Pending():
-			pending++
-		case item.Passed():
-			passed++
-		default:
-			failing++
-		}
-	}
+	failing, pending, passed := services.Tally(items)
 	return fmt.Sprintf("%d failing, %d successful, and %d pending checks", failing, passed, pending)
 }