fix: resolve short IDs in comments add/list daemon mode (#1070)

Add daemonClient.ResolveID() calls before AddComment and ListComments
operations in daemon mode, following the pattern from update.go.

Previously, short IDs (e.g., "5wbm") worked with most bd commands but
failed with `comments add` and `comments list` when using the daemon.
The short ID was passed directly to the RPC server which expected full
IDs (e.g., "prefix-5wbm").

Changes:
- cmd/bd/comments.go: Add ID resolution before daemon RPC calls
- internal/rpc/comments_test.go: Update tests to reflect client-side
  resolution pattern (RPC server expects full IDs, CLI resolves first)

Fixes: https://github.com/steveyegge/beads/issues/1070

cmd/bd/comments.go

@@ -38,6 +38,18 @@ Examples:
 		comments := make([]*types.Comment, 0)
 		usedDaemon := false
 		if daemonClient != nil {
+			// Resolve short/partial ID to full ID before sending to daemon (#1070)
+			resolveArgs := &rpc.ResolveIDArgs{ID: issueID}
+			resolveResp, err := daemonClient.ResolveID(resolveArgs)
+			if err != nil {
+				FatalErrorRespectJSON("resolving ID %s: %v", issueID, err)
+			}
+			var resolvedID string
+			if err := json.Unmarshal(resolveResp.Data, &resolvedID); err != nil {
+				FatalErrorRespectJSON("unmarshaling resolved ID: %v", err)
+			}
+			issueID = resolvedID
+
 			resp, err := daemonClient.ListComments(&rpc.CommentListArgs{ID: issueID})
 			if err != nil {
 				if isUnknownOperationError(err) {
@@ -145,6 +157,18 @@ Examples:
 
 		var comment *types.Comment
 		if daemonClient != nil {
+			// Resolve short/partial ID to full ID before sending to daemon (#1070)
+			resolveArgs := &rpc.ResolveIDArgs{ID: issueID}
+			resolveResp, err := daemonClient.ResolveID(resolveArgs)
+			if err != nil {
+				FatalErrorRespectJSON("resolving ID %s: %v", issueID, err)
+			}
+			var resolvedID string
+			if err := json.Unmarshal(resolveResp.Data, &resolvedID); err != nil {
+				FatalErrorRespectJSON("unmarshaling resolved ID: %v", err)
+			}
+			issueID = resolvedID
+
 			resp, err := daemonClient.AddComment(&rpc.CommentAddArgs{
 				ID:     issueID,
 				Author: author,