feat(bd): add --ephemeral and --persistent flags to bd update (#1263)

Adds --ephemeral and --persistent flags to bd update command.

Author: aleiby

cmd/bd/update.go

@@ -165,6 +165,19 @@ create, update, show, or close operation).`,
 				updates["defer_until"] = t
 			}
 		}
+		// Ephemeral/persistent flags
+		// Note: storage layer uses "wisp" field name, maps to "ephemeral" column
+		ephemeralChanged := cmd.Flags().Changed("ephemeral")
+		persistentChanged := cmd.Flags().Changed("persistent")
+		if ephemeralChanged && persistentChanged {
+			FatalErrorRespectJSON("cannot specify both --ephemeral and --persistent flags")
+		}
+		if ephemeralChanged {
+			updates["wisp"] = true
+		}
+		if persistentChanged {
+			updates["wisp"] = false
+		}
 
 		// Get claim flag
 		claimFlag, _ := cmd.Flags().GetBool("claim")
@@ -278,6 +291,10 @@ create, update, show, or close operation).`,
 					empty := ""
 					updateArgs.DeferUntil = &empty
 				}
+				// Ephemeral/persistent
+				if wisp, ok := updates["wisp"].(bool); ok {
+					updateArgs.Ephemeral = &wisp
+				}
 
 				// Set claim flag for atomic claim operation
 				updateArgs.Claim = claimFlag
@@ -613,6 +630,9 @@ func init() {
 	updateCmd.Flags().String("defer", "", "Defer until date (empty to clear). Issue hidden from bd ready until then")
 	// Gate fields (bd-z6kw)
 	updateCmd.Flags().String("await-id", "", "Set gate await_id (e.g., GitHub run ID for gh:run gates)")
+	// Ephemeral/persistent flags
+	updateCmd.Flags().Bool("ephemeral", false, "Mark issue as ephemeral (wisp) - not exported to JSONL")
+	updateCmd.Flags().Bool("persistent", false, "Mark issue as persistent (promote wisp to regular issue)")
 	updateCmd.ValidArgsFunction = issueIDCompletion
 	rootCmd.AddCommand(updateCmd)
 }