fix(mail): resolve beads-native queues/channels by name

resolveByName() only checked config-based queues/channels, missing
beads-native ones (gt:queue, gt:channel). Added lookup for both.

Also added LookupQueueByName to beads package for parity with
LookupChannelByName.

Fixes: gt-l5qbi3

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/beads/beads_queue.go

@@ -292,6 +292,37 @@ func (b *Beads) DeleteQueueBead(id string) error {
 	return err
 }
 
+// LookupQueueByName finds a queue by its name field (not by ID).
+// This is used for address resolution where we may not know the full bead ID.
+func (b *Beads) LookupQueueByName(name string) (*Issue, *QueueFields, error) {
+	// First try direct lookup by standard ID formats (town and rig level)
+	for _, isTownLevel := range []bool{true, false} {
+		id := QueueBeadID(name, isTownLevel)
+		issue, fields, err := b.GetQueueBead(id)
+		if err != nil {
+			return nil, nil, err
+		}
+		if issue != nil {
+			return issue, fields, nil
+		}
+	}
+
+	// If not found by ID, search all queues by name field
+	queues, err := b.ListQueueBeads()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	for _, issue := range queues {
+		fields := ParseQueueFields(issue.Description)
+		if fields.Name == name {
+			return issue, fields, nil
+		}
+	}
+
+	return nil, nil, nil // Not found
+}
+
 // MatchClaimPattern checks if an identity matches a claim pattern.
 // Patterns support:
 //   - "*" matches anyone

internal/mail/resolve.go

@@ -171,7 +171,29 @@ func (r *Resolver) resolveByName(name string) ([]Recipient, error) {
 		}
 	}
 
-	// Check for queue in config
+	// Check for beads-native queue
+	if r.beads != nil {
+		_, queueFields, err := r.beads.LookupQueueByName(name)
+		if err != nil {
+			return nil, err
+		}
+		if queueFields != nil {
+			foundQueue = true
+		}
+	}
+
+	// Check for beads-native channel
+	if r.beads != nil {
+		_, channelFields, err := r.beads.LookupChannelByName(name)
+		if err != nil {
+			return nil, err
+		}
+		if channelFields != nil {
+			foundChannel = true
+		}
+	}
+
+	// Check for queue/channel in config (legacy)
 	if r.townRoot != "" {
 		cfg, err := config.LoadMessagingConfig(config.MessagingConfigPath(r.townRoot))
 		if err == nil && cfg != nil {