From db1eb1e6b1ae7decc83a5a57729b9d801fd3d60a Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sun, 22 Feb 2026 05:57:48 +0000
Subject: [PATCH 1/5] Initial plan


From 48bcfce023a6ff8b29423937905ed8ad366a5967 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sun, 22 Feb 2026 06:02:11 +0000
Subject: [PATCH 2/5] fix: handle ignored errors in GitHub Copilot provider

Co-authored-by: Argobell <183611258+Argobell@users.noreply.github.com>
---
 pkg/providers/github_copilot_provider.go | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/pkg/providers/github_copilot_provider.go b/pkg/providers/github_copilot_provider.go
index 6124881f7..fa67363f6 100644
--- a/pkg/providers/github_copilot_provider.go
+++ b/pkg/providers/github_copilot_provider.go
@@ -23,22 +23,26 @@ func NewGitHubCopilotProvider(uri string, connectMode string, model string) (*Gi
 	switch connectMode {
 
 	case "stdio":
-		// todo
+		return nil, fmt.Errorf("stdio connect mode is not yet supported for GitHub Copilot provider")
 	case "grpc":
 		client := copilot.NewClient(&copilot.ClientOptions{
 			CLIUrl: uri,
 		})
 		if err := client.Start(context.Background()); err != nil {
-			return nil, fmt.Errorf(
-				"Can't connect to Github Copilot, https://github.com/github/copilot-sdk/blob/main/docs/getting-started.md#connecting-to-an-external-cli-server for details",
-			)
+			return nil, fmt.Errorf("can't connect to GitHub Copilot (see https://github.com/github/copilot-sdk/blob/main/docs/getting-started.md#connecting-to-an-external-cli-server): %w", err)
 		}
 		defer client.Stop()
-		session, _ = client.CreateSession(context.Background(), &copilot.SessionConfig{
+		var err error
+		session, err = client.CreateSession(context.Background(), &copilot.SessionConfig{
 			Model: model,
 			Hooks: &copilot.SessionHooks{},
 		})
+		if err != nil {
+			return nil, fmt.Errorf("failed to create GitHub Copilot session: %w", err)
+		}
 
+	default:
+		return nil, fmt.Errorf("unsupported connect mode %q for GitHub Copilot provider (supported: grpc)", connectMode)
 	}
 
 	return &GitHubCopilotProvider{
@@ -65,11 +69,17 @@ func (p *GitHubCopilotProvider) Chat(
 		})
 	}
 
-	fullcontent, _ := json.Marshal(out)
+	fullcontent, err := json.Marshal(out)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal messages: %w", err)
+	}
 
-	content, _ := p.session.Send(ctx, copilot.MessageOptions{
+	content, err := p.session.Send(ctx, copilot.MessageOptions{
 		Prompt: string(fullcontent),
 	})
+	if err != nil {
+		return nil, fmt.Errorf("GitHub Copilot request failed: %w", err)
+	}
 
 	return &LLMResponse{
 		FinishReason: "stop",

From e610e938e202ef0d9b1435cfea29d15bed81d2dd Mon Sep 17 00:00:00 2001
From: Zihang Xu <argocot@gmail.com>
Date: Sun, 22 Feb 2026 14:59:50 +0800
Subject: [PATCH 3/5] Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 pkg/providers/github_copilot_provider.go | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/pkg/providers/github_copilot_provider.go b/pkg/providers/github_copilot_provider.go
index fa67363f6..b2442b6d5 100644
--- a/pkg/providers/github_copilot_provider.go
+++ b/pkg/providers/github_copilot_provider.go
@@ -69,10 +69,7 @@ func (p *GitHubCopilotProvider) Chat(
 		})
 	}
 
-	fullcontent, err := json.Marshal(out)
-	if err != nil {
-		return nil, fmt.Errorf("failed to marshal messages: %w", err)
-	}
+	fullcontent, _ := json.Marshal(out)
 
 	content, err := p.session.Send(ctx, copilot.MessageOptions{
 		Prompt: string(fullcontent),

From 919b2094f13db6a1227aa09e3dc99b87022c1dc6 Mon Sep 17 00:00:00 2001
From: Zihang Xu <argocot@gmail.com>
Date: Sun, 22 Feb 2026 15:07:58 +0800
Subject: [PATCH 4/5] Update pkg/providers/github_copilot_provider.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 pkg/providers/github_copilot_provider.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkg/providers/github_copilot_provider.go b/pkg/providers/github_copilot_provider.go
index b2442b6d5..fa67363f6 100644
--- a/pkg/providers/github_copilot_provider.go
+++ b/pkg/providers/github_copilot_provider.go
@@ -69,7 +69,10 @@ func (p *GitHubCopilotProvider) Chat(
 		})
 	}
 
-	fullcontent, _ := json.Marshal(out)
+	fullcontent, err := json.Marshal(out)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal messages: %w", err)
+	}
 
 	content, err := p.session.Send(ctx, copilot.MessageOptions{
 		Prompt: string(fullcontent),

From aba02a4c12697c40ef1ba404dbadb2ec2394b5c3 Mon Sep 17 00:00:00 2001
From: Zihang Xu <argocot@gmail.com>
Date: Sun, 22 Feb 2026 15:12:08 +0800
Subject: [PATCH 5/5] Update pkg/providers/github_copilot_provider.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 pkg/providers/github_copilot_provider.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkg/providers/github_copilot_provider.go b/pkg/providers/github_copilot_provider.go
index fa67363f6..26552a83c 100644
--- a/pkg/providers/github_copilot_provider.go
+++ b/pkg/providers/github_copilot_provider.go
@@ -78,7 +78,7 @@ func (p *GitHubCopilotProvider) Chat(
 		Prompt: string(fullcontent),
 	})
 	if err != nil {
-		return nil, fmt.Errorf("GitHub Copilot request failed: %w", err)
+		return nil, fmt.Errorf("github copilot request failed: %w", err)
 	}
 
 	return &LLMResponse{