fix(jira): fill required 'Área Solicitante' on Epic create

Project DATA's Epic and Mejora issue types mark customfield_10158
('Área Solicitante', a single-select) as required on the create screen.
The create payload omitted it, so enabling card.created sync produced
HTTP 400 'Solicitante is required'.

Add RequesterField/RequesterMap/RequesterDefault to jiraConfig. create()
and update() now inject the field as a {value:<option>} single-select,
resolved from the card requester via the map (case-insensitive) or the
default. Kanban requesters are person names, not departments, so cards
fall through to requester_default ('Transformación' for our setup).

seed-jira-data gains --requester-field (default customfield_10158) and
--requester-default (default Transformación); the existing-module branch
now merges config so operator UI edits (e.g. a requester_map) survive a
re-seed. Validated against Jira: Epic create with the field succeeds 201
(reporter auto-defaults to the token owner).

backend/seed_jira.go

@@ -33,6 +33,10 @@ func runSeedJiraData(args []string) error {
 		"Comma-separated event types this module subscribes to")
 	enabled := fs.Bool("enabled", true, "Start with module enabled (true) or disabled (false)")
 	passEntry := fs.String("pass-prefix", "jira/anjana", "pass entry prefix; reads ${prefix}/{email,api-token,domain}")
+	requesterField := fs.String("requester-field", "customfield_10158",
+		"Jira custom field id for the required 'Área Solicitante' select (empty to disable)")
+	requesterDefault := fs.String("requester-default", "Transformación",
+		"Default 'Área Solicitante' option value for auto-created cards whose requester is not mapped")
 	if err := fs.Parse(args); err != nil {
 		return err
 	}
@@ -91,6 +95,10 @@ func runSeedJiraData(args []string) error {
 		"labels_map":   labelsMap,
 		"assignee_map": assigneeMap,
 	}
+	if *requesterField != "" {
+		cfg["requester_field"] = *requesterField
+		cfg["requester_default"] = *requesterDefault
+	}
 
 	// Upsert by name. Module name is the human-friendly identifier; we treat
 	// it as unique for the purposes of seeding so re-running this command does
@@ -111,7 +119,14 @@ func runSeedJiraData(args []string) error {
 		existing.Kind = "jira"
 		existing.Enabled = *enabled
 		existing.EventFilter = splitCSV(*filter)
-		existing.Config = cfg
+		// Merge so keys the operator added via the UI (e.g. a custom
+		// requester_map) survive a re-seed. Seed-managed keys are refreshed.
+		if existing.Config == nil {
+			existing.Config = JSONValue{}
+		}
+		for k, v := range cfg {
+			existing.Config[k] = v
+		}
 		if err := db.saveModule(existing); err != nil {
 			return fmt.Errorf("update module: %w", err)
 		}