[WIP] Remove skills from resume mode output (#184)

* Initial plan

* Skip skills discovery in resume mode

Co-authored-by: alexec <1142830+alexec@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: alexec <1142830+alexec@users.noreply.github.com>

Author: Copilot

pkg/codingcontext/context.go

@@ -574,6 +574,12 @@ func (cc *Context) runBootstrapScript(ctx context.Context, path string) error {
 // discoverSkills searches for skill directories and loads only their metadata (name and description)
 // for progressive disclosure. Skills are folders containing a SKILL.md file.
 func (cc *Context) discoverSkills() error {
+	// Skip skill discovery if resume mode is enabled
+	// Check cc.resume directly first, then fall back to selector check for backward compatibility
+	if cc.resume || (cc.includes != nil && cc.includes.GetValue("resume", "true")) {
+		return nil
+	}
+
 	var skillPaths []string
 	for _, path := range cc.downloadedPaths {
 		skillPaths = append(skillPaths, skillSearchPaths(path)...)

pkg/codingcontext/context_test.go

@@ -2244,6 +2244,41 @@ description: %s
 			taskName: "test-task",
 			wantErr:  true,
 		},
+		{
+			name: "resume mode skips skill discovery",
+			setup: func(t *testing.T, dir string) {
+				// Create task
+				createTask(t, dir, "test-task", "", "Task content")
+
+				// Create skill directory with SKILL.md
+				skillDir := filepath.Join(dir, ".agents", "skills", "test-skill")
+				if err := os.MkdirAll(skillDir, 0o755); err != nil {
+					t.Fatalf("failed to create skill directory: %v", err)
+				}
+
+				skillContent := `---
+name: test-skill
+description: A test skill that should not be discovered in resume mode
+---
+
+# Test Skill
+
+This is a test skill.
+`
+				skillPath := filepath.Join(skillDir, "SKILL.md")
+				if err := os.WriteFile(skillPath, []byte(skillContent), 0o644); err != nil {
+					t.Fatalf("failed to create skill file: %v", err)
+				}
+			},
+			opts:     []Option{WithResume(true)},
+			taskName: "test-task",
+			wantErr:  false,
+			checkFunc: func(t *testing.T, result *Result) {
+				if len(result.Skills.Skills) != 0 {
+					t.Errorf("expected 0 skills in resume mode, got %d", len(result.Skills.Skills))
+				}
+			},
+		},
 	}
 
 	for _, tt := range tests {