feat: deterministic match_dirs tie-breaking by config file order

internal/config/config_test.go

@@ -567,6 +567,67 @@ func TestResolveHostByPath_TildeExpansion(t *testing.T) {
 	}
 }
 
+func TestResolveHostByPath_TieBreakByConfigOrder(t *testing.T) {
+	cfg := &Config{
+		Hosts: map[string]HostConfig{
+			"second.org": {
+				Hostname:  "second.org",
+				Token:     "t2",
+				MatchDirs: []string{"/shared/path"},
+				Order:     1,
+			},
+			"first.org": {
+				Hostname:  "first.org",
+				Token:     "t1",
+				MatchDirs: []string{"/shared/path"},
+				Order:     0,
+			},
+		},
+	}
+
+	got := cfg.ResolveHostByPath("/shared/path/subdir")
+	if got != "first.org" {
+		t.Errorf("expected first.org (earlier in config), got %q", got)
+	}
+}
+
+func TestAssignHostOrder(t *testing.T) {
+	yamlData := []byte(`hosts:
+  alpha.org:
+    hostname: alpha.org
+    token: t1
+  beta.org:
+    hostname: beta.org
+    token: t2
+  gamma.org:
+    hostname: gamma.org
+    token: t3
+`)
+	cfg, err := LoadFromPath(writeTempConfig(t, yamlData))
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if cfg.Hosts["alpha.org"].Order != 0 {
+		t.Errorf("alpha.org order = %d, want 0", cfg.Hosts["alpha.org"].Order)
+	}
+	if cfg.Hosts["beta.org"].Order != 1 {
+		t.Errorf("beta.org order = %d, want 1", cfg.Hosts["beta.org"].Order)
+	}
+	if cfg.Hosts["gamma.org"].Order != 2 {
+		t.Errorf("gamma.org order = %d, want 2", cfg.Hosts["gamma.org"].Order)
+	}
+}
+
+func writeTempConfig(t *testing.T, data []byte) string {
+	t.Helper()
+	path := filepath.Join(t.TempDir(), "config.yaml")
+	if err := os.WriteFile(path, data, 0600); err != nil {
+		t.Fatalf("failed to write temp config: %v", err)
+	}
+	return path
+}
+
 func TestExpandHome(t *testing.T) {
 	home, err := os.UserHomeDir()
 	if err != nil {