fix(agent): user includes should have higher priority than system sup…

internal/agent/preview.go

@@ -53,15 +53,15 @@ func (a *Agent) whyExcluded(d model.Diff) ExcludeReason {
 		return ExcludeUserRule
 	}
 
+	if f != nil && f.HasInclude() && f.IsUserIncluded(path) {
+		return ExcludeNone
+	}
+
 	ext := a.extFromPath(path)
 	if ext != "" && !allowedext.IsAllowedExt(ext) {
 		return ExcludeExtension
 	}
 
-	if f != nil && f.HasInclude() && f.IsUserIncluded(path) {
-		return ExcludeNone
-	}
-
 	if allowedext.IsExcludedPath(path) {
 		return ExcludeDefaultPath
 	}

internal/agent/preview_test.go

@@ -207,7 +207,7 @@ func TestWhyExcluded_DefaultPathFilter(t *testing.T) {
 func TestWhyExcluded_UserIncludePattern(t *testing.T) {
 	agent := New(Args{
 		FileFilter: &rules.FileFilter{
-			Include: []string{"src/**/*.go", "pkg/**/*.go"},
+			Include: []string{"src/**/*.go", "pkg/**/*.go", "**/*.supportedext"},
 		},
 	})
 
@@ -260,13 +260,12 @@ func TestWhyExcluded_UserIncludePattern(t *testing.T) {
 			},
 			expected: ExcludeNone,
 		},
-		// --- Extension filter still takes precedence over include logic ---
 		{
-			name: "unsupported extension excluded before include check",
+			name: "include check overrides extension exclusion",
 			diff: model.Diff{
-				NewPath: "docs/readme.md",
+				NewPath: "internal/test.supportedext",
 			},
-			expected: ExcludeExtension,
+			expected: ExcludeNone,
 		},
 		{
 			name: "unsupported extension even if path looks like include dir",