fix(cli): register all 18 detector packages, not just 3

The CLI binary's detector registry was empty for 15 language families
because their packages were never imported. Only generic, jvm/java, and
python had blank-imports in cli/index.go + cli/plugins.go — every other
detector package's init() never fired in production.

Symptoms (from benchmark on polyglot-bench):
- terraform-aws-eks: 0 Go nodes (155 files discovered)
- eshop: 0 Go nodes (1095 files)
- nuxt: 0 Go nodes (1412 files)
- PSScriptAnalyzer: 0 Go nodes (657 files)
- All non-Java/Python projects empty

Fix: new cli/detectors_register.go does blank imports of all 18 leaf
detector packages (auth, csharp, frontend, generic, golang, iac,
jvm/{java,kotlin,scala}, markup, proto, python, script/shell, sql,
structured, systems/{cpp,rust}, typescript).

Re-bench post-fix: terraform 1556 nodes, eshop 1339, nuxt 4904, etc.
All language families now produce output. Detector tuning to right-size
the node counts vs Java is the next pass.

Adds two regression tests in iac/terraform_real_test.go that exercise
the detector on a synthetic terraform-aws-eks slice AND the real
main.tf when locally available.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: aksOps

go/internal/cli/detectors_register.go

@@ -0,0 +1,28 @@
+package cli
+
+// Side-effect imports: each detector package's init() registers itself with
+// the process-wide Default registry. Without these imports the linker would
+// drop the packages and the CLI binary would ship with the registry empty.
+//
+// Keep this list flat (leaf packages only) and exhaustive — any detector
+// package added under internal/detector/ must land here too.
+import (
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/auth"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/csharp"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/frontend"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/generic"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/golang"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/iac"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/jvm/java"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/jvm/kotlin"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/jvm/scala"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/markup"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/proto"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/python"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/script/shell"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/sql"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/structured"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/systems/cpp"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/systems/rust"
+	_ "github.com/randomcodespace/codeiq/go/internal/detector/typescript"
+)

go/internal/detector/iac/terraform_real_test.go

@@ -0,0 +1,78 @@
+package iac
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/randomcodespace/codeiq/go/internal/detector"
+)
+
+// TestTerraform_RealFile catches the regression where TerraformDetector
+// fires on synthetic fixtures but produces zero nodes on the public
+// terraform-aws-eks repository (see PR #130 benchmark report).
+func TestTerraform_RealFile(t *testing.T) {
+	// Inline a representative slice of terraform-aws-eks/main.tf.
+	content := `data "aws_partition" "current" {
+  count = local.create ? 1 : 0
+}
+data "aws_caller_identity" "current" {
+  count = local.create ? 1 : 0
+}
+
+resource "aws_eks_cluster" "this" {
+  count = local.create ? 1 : 0
+
+  name     = var.name
+  role_arn = local.cluster_role
+  version  = var.kubernetes_version
+}
+
+variable "name" {
+  type    = string
+  default = "my-cluster"
+}
+
+output "cluster_endpoint" {
+  value = try(aws_eks_cluster.this[0].endpoint, null)
+}
+
+module "vpc" {
+  source = "terraform-aws-modules/vpc/aws"
+}
+`
+	d := NewTerraformDetector()
+	r := d.Detect(&detector.Context{
+		FilePath: "main.tf",
+		Language: "terraform",
+		Content:  content,
+	})
+	wantMin := 6 // 2 data + 1 resource + 1 var + 1 output + 1 module
+	if len(r.Nodes) < wantMin {
+		t.Fatalf("expected >=%d nodes, got %d", wantMin, len(r.Nodes))
+	}
+}
+
+// TestTerraform_AwsEksHEAD verifies the detector against the actual file
+// from terraform-aws-eks/main.tf when present. Skips if the local clone
+// isn't available.
+func TestTerraform_AwsEksHEAD(t *testing.T) {
+	path := "/home/dev/projects/polyglot-bench/terraform-aws-eks/main.tf"
+	if _, err := os.Stat(path); err != nil {
+		t.Skipf("test fixture not present: %s", filepath.Base(path))
+	}
+	b, err := os.ReadFile(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	d := NewTerraformDetector()
+	r := d.Detect(&detector.Context{
+		FilePath: "main.tf",
+		Language: "terraform",
+		Content:  string(b),
+	})
+	if len(r.Nodes) == 0 {
+		t.Fatalf("expected nodes from main.tf, got 0 (file is %d bytes)", len(b))
+	}
+	t.Logf("main.tf: %d nodes", len(r.Nodes))
+}