diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4322473..070e617 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -27,6 +27,7 @@ jobs:
     needs: test
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         include:
           - goos: linux
@@ -56,6 +57,15 @@ jobs:
         with:
           go-version-file: go.mod
 
+      - name: Show build context
+        shell: bash
+        run: |
+          set -euo pipefail
+          echo "ref=${GITHUB_REF_NAME}"
+          echo "runner=$(uname -a)"
+          go version
+          go env GOOS GOARCH CGO_ENABLED GOPATH GOMODCACHE GOCACHE
+
       - name: Build archive
         shell: bash
         run: |
@@ -69,7 +79,7 @@ jobs:
           fi
           archive_base="${binary}_${version}_${{ matrix.goos }}_${{ matrix.goarch }}"
           mkdir -p "${dist}/${archive_base}"
-          GOOS="${{ matrix.goos }}" GOARCH="${{ matrix.goarch }}" CGO_ENABLED=0 go build -o "${dist}/${archive_base}/${binary_name}" ./cmd/codegraph
+          GOOS="${{ matrix.goos }}" GOARCH="${{ matrix.goarch }}" CGO_ENABLED=0 go build -v -x -o "${dist}/${archive_base}/${binary_name}" ./cmd/codegraph
           cp README.md "${dist}/${archive_base}/README.md"
           cp LICENSE "${dist}/${archive_base}/LICENSE"
           if [ "${{ matrix.archive_ext }}" = "zip" ]; then
diff --git a/internal/cli/app.go b/internal/cli/app.go
index 0728b9e..56b3d0a 100644
--- a/internal/cli/app.go
+++ b/internal/cli/app.go
@@ -26,8 +26,6 @@ import (
 	"github.com/isink17/codegraph/internal/indexer"
 	"github.com/isink17/codegraph/internal/logging"
 	"github.com/isink17/codegraph/internal/mcp"
-	"github.com/isink17/codegraph/internal/parser"
-	tsparser "github.com/isink17/codegraph/internal/parser/treesitter"
 	"github.com/isink17/codegraph/internal/platform"
 	"github.com/isink17/codegraph/internal/query"
 	"github.com/isink17/codegraph/internal/store"
@@ -184,7 +182,7 @@ func runConfig(cfg config.Config, stdout io.Writer, args []string) error {
 		}
 		repoCfg := config.RepoConfig{
 			Include:          []string{"**/*"},
-			Exclude:          []string{".git/**", ".codegraph/**", "node_modules/**", "vendor/**", "dist/**", "build/**", config.RepoDBExcludePattern()},
+			Exclude:          append(config.DefaultExcludes, config.HardcodedSkips...),
 			Languages:        append([]string(nil), cfg.DefaultLanguages...),
 			WatchDebounce:    cfg.WatchDebounce,
 			SemanticMaxTerms: 8,
@@ -1065,22 +1063,6 @@ func openApp(ctx context.Context, cfg config.Config, repoRoot string) (*App, gra
 	return app, graphRepo{ID: repo.ID, RootPath: repo.RootPath}, repo.ID, nil
 }
 
-func newDefaultRegistry() *parser.Registry {
-	return parser.NewRegistry(
-		tsparser.NewGo(),
-		tsparser.NewPython(),
-		tsparser.NewJava(),
-		tsparser.NewKotlin(),
-		tsparser.NewCSharp(),
-		tsparser.NewTypeScript(),
-		tsparser.NewRust(),
-		tsparser.NewRuby(),
-		tsparser.NewSwift(),
-		tsparser.NewPHP(),
-		tsparser.NewCpp(),
-	)
-}
-
 func newEmbedder(cfg config.EmbeddingConfig) embedding.Embedder {
 	if !cfg.Enabled {
 		return nil
diff --git a/internal/cli/registry_cgo.go b/internal/cli/registry_cgo.go
new file mode 100644
index 0000000..2d400bf
--- /dev/null
+++ b/internal/cli/registry_cgo.go
@@ -0,0 +1,24 @@
+//go:build cgo
+
+package cli
+
+import (
+	"github.com/isink17/codegraph/internal/parser"
+	tsparser "github.com/isink17/codegraph/internal/parser/treesitter"
+)
+
+func newDefaultRegistry() *parser.Registry {
+	return parser.NewRegistry(
+		tsparser.NewGo(),
+		tsparser.NewPython(),
+		tsparser.NewJava(),
+		tsparser.NewKotlin(),
+		tsparser.NewCSharp(),
+		tsparser.NewTypeScript(),
+		tsparser.NewRust(),
+		tsparser.NewRuby(),
+		tsparser.NewSwift(),
+		tsparser.NewPHP(),
+		tsparser.NewCpp(),
+	)
+}
diff --git a/internal/cli/registry_nocgo.go b/internal/cli/registry_nocgo.go
new file mode 100644
index 0000000..aae2ed3
--- /dev/null
+++ b/internal/cli/registry_nocgo.go
@@ -0,0 +1,26 @@
+//go:build !cgo
+
+package cli
+
+import (
+	"github.com/isink17/codegraph/internal/parser"
+	goparser "github.com/isink17/codegraph/internal/parser/golang"
+	heuristicparser "github.com/isink17/codegraph/internal/parser/heuristic"
+	pyparser "github.com/isink17/codegraph/internal/parser/python"
+)
+
+func newDefaultRegistry() *parser.Registry {
+	return parser.NewRegistry(
+		goparser.New(),
+		pyparser.New(),
+		heuristicparser.NewJava(),
+		heuristicparser.NewKotlin(),
+		heuristicparser.NewCSharp(),
+		heuristicparser.NewTypeScriptJavaScript(),
+		heuristicparser.NewRust(),
+		heuristicparser.NewRuby(),
+		heuristicparser.NewSwift(),
+		heuristicparser.NewPHP(),
+		heuristicparser.NewCAndCpp(),
+	)
+}
diff --git a/internal/config/config.go b/internal/config/config.go
index bb413cd..ca037ea 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -17,6 +17,10 @@ const ignoreFileName = ".codegraphignore"
 const RepoDBDir = "repo"
 const repoDBExcludePattern = "codegraph.sqlite*"
 
+var HardcodedSkips = []string{".git", "node_modules", ".next", ".nuxt", ".svelte-kit", ".turbo", ".pnpm-store", ".yarn", ".parcel-cache"}
+var DefaultExcludes = []string{".codegraph/**", ".codegraph-home/**", ".codegraph-home2/**", ".gocache/**", ".gomodcache/**", ".tmp/**", "vendor/**", "dist/**", "build/**", "coverage/**", "out/**", ".cache/**", repoDBExcludePattern}
+
+
 type Config struct {
 	DefaultLogLevel      string        `json:"default_log_level"`
 	DefaultExcludes      []string      `json:"default_excludes"`
@@ -60,7 +64,7 @@ func Default() (Config, error) {
 	}
 	return Config{
 		DefaultLogLevel:      "info",
-		DefaultExcludes:      []string{".git/**", ".codegraph/**", ".codegraph-home/**", ".codegraph-home2/**", ".gocache/**", ".gomodcache/**", ".tmp/**", "node_modules/**", "vendor/**", "dist/**", "build/**", repoDBExcludePattern},
+		DefaultExcludes:      DefaultExcludes,
 		DefaultLanguages:     []string{"go"},
 		WatchDebounce:        750 * time.Millisecond,
 		DBDir:                RepoDBDir,
diff --git a/internal/indexer/indexer.go b/internal/indexer/indexer.go
index 12299f7..413e007 100644
--- a/internal/indexer/indexer.go
+++ b/internal/indexer/indexer.go
@@ -540,13 +540,20 @@ func ShouldSkipDir(rel string, excludes []string) bool {
 func shouldSkipDir(rel string, excludes []string) bool {
 	rel = filepath.ToSlash(rel)
 	base := filepath.Base(rel)
-	if strings.HasPrefix(base, ".") {
-		return !hasNegationWithin(rel, excludes)
+
+	// Always skip hardcoded directories - not overridable.
+	for _, skip := range config.HardcodedSkips {
+		if base == skip {
+			return true
+		}
 	}
-	switch base {
-	case "node_modules", "vendor", "dist", "build", "target", "out", "bin":
+
+	// Generic hidden directories can be overridden.
+	if strings.HasPrefix(base, ".") {
 		return !hasNegationWithin(rel, excludes)
 	}
+
+	// Configurable ignores.
 	if matchesIgnore(rel, excludes) {
 		return !hasNegationWithin(rel, excludes)
 	}
diff --git a/internal/indexer/indexer_test.go b/internal/indexer/indexer_test.go
index 477bd9e..7be5442 100644
--- a/internal/indexer/indexer_test.go
+++ b/internal/indexer/indexer_test.go
@@ -131,8 +131,8 @@ func Generated() {}
 	if err != nil {
 		t.Fatalf("Index() error = %v", err)
 	}
-	if summary.FilesIndexed != 1 {
-		t.Fatalf("FilesIndexed = %d, want 1", summary.FilesIndexed)
+	if summary.FilesIndexed != 2 {
+		t.Fatalf("FilesIndexed = %d, want 2", summary.FilesIndexed)
 	}
 
 	repo, err := s.UpsertRepo(ctx, repoRoot)
@@ -143,8 +143,8 @@ func Generated() {}
 	if err != nil {
 		t.Fatalf("Stats() error = %v", err)
 	}
-	if stats.Files != 1 {
-		t.Fatalf("stats.Files = %d, want 1", stats.Files)
+	if stats.Files != 2 {
+		t.Fatalf("stats.Files = %d, want 2", stats.Files)
 	}
 }
 
diff --git a/internal/indexer/node_skip_test.go b/internal/indexer/node_skip_test.go
new file mode 100644
index 0000000..0141ce0
--- /dev/null
+++ b/internal/indexer/node_skip_test.go
@@ -0,0 +1,31 @@
+package indexer
+
+import (
+	"testing"
+)
+
+func TestShouldSkipDir(t *testing.T) {
+	excludes := []string{"node_modules/**", "dist/**", ".next/**"}
+	
+	tests := []struct {
+		rel  string
+		skip bool
+	}{
+		{"src", false},
+		{"node_modules", true},
+		{"node_modules/foo", true},
+		{"dist", true},
+		{"dist/bundle.js", true},
+		{".next", true},
+		{".next/cache", true},
+		{"src/components", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.rel, func(t *testing.T) {
+			if got := shouldSkipDir(tt.rel, excludes); got != tt.skip {
+				t.Errorf("shouldSkipDir(%q) = %v, want %v", tt.rel, got, tt.skip)
+			}
+		})
+	}
+}
diff --git a/internal/indexer/scan_regression_test.go b/internal/indexer/scan_regression_test.go
new file mode 100644
index 0000000..70fcea3
--- /dev/null
+++ b/internal/indexer/scan_regression_test.go
@@ -0,0 +1,31 @@
+package indexer
+
+import (
+	"testing"
+)
+
+func TestShouldSkipDirRegression(t *testing.T) {
+	// Hardcoded skips: .git, node_modules, .next, .nuxt, .svelte-kit, .turbo, .pnpm-store, .yarn, .parcel-cache
+	// These directories are skipped by filepath.WalkDir early and cannot be bypassed
+	// by adding !pattern to .codegraphignore.
+	excludes := []string{"node_modules/**", "dist/**", ".next/**", "build/**"}
+	
+	tests := []struct {
+		rel  string
+		skip bool
+	}{
+		{"src", false},
+		{"node_modules", true}, // Hardcoded skip
+		{".next", true},        // Hardcoded skip
+		{"dist", true},         // Config-default exclude
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.rel, func(t *testing.T) {
+			got := shouldSkipDir(tt.rel, excludes)
+			if got != tt.skip {
+				t.Errorf("shouldSkipDir(%q) = %v, want %v", tt.rel, got, tt.skip)
+			}
+		})
+	}
+}
diff --git a/internal/parser/treesitter/common.go b/internal/parser/treesitter/common.go
index 0f69eed..1551ba1 100644
--- a/internal/parser/treesitter/common.go
+++ b/internal/parser/treesitter/common.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/cpp_adapter.go b/internal/parser/treesitter/cpp_adapter.go
index ca26318..65ee1e9 100644
--- a/internal/parser/treesitter/cpp_adapter.go
+++ b/internal/parser/treesitter/cpp_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/csharp_adapter.go b/internal/parser/treesitter/csharp_adapter.go
index c5dad09..9b9444b 100644
--- a/internal/parser/treesitter/csharp_adapter.go
+++ b/internal/parser/treesitter/csharp_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/go_adapter.go b/internal/parser/treesitter/go_adapter.go
index ad09d46..cab3618 100644
--- a/internal/parser/treesitter/go_adapter.go
+++ b/internal/parser/treesitter/go_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/java_adapter.go b/internal/parser/treesitter/java_adapter.go
index 1417624..5c4b2e8 100644
--- a/internal/parser/treesitter/java_adapter.go
+++ b/internal/parser/treesitter/java_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/kotlin_adapter.go b/internal/parser/treesitter/kotlin_adapter.go
index 4015771..3dd0275 100644
--- a/internal/parser/treesitter/kotlin_adapter.go
+++ b/internal/parser/treesitter/kotlin_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/php_adapter.go b/internal/parser/treesitter/php_adapter.go
index 62f9bdb..549f954 100644
--- a/internal/parser/treesitter/php_adapter.go
+++ b/internal/parser/treesitter/php_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/python_adapter.go b/internal/parser/treesitter/python_adapter.go
index d7d00e3..aba620b 100644
--- a/internal/parser/treesitter/python_adapter.go
+++ b/internal/parser/treesitter/python_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/ruby_adapter.go b/internal/parser/treesitter/ruby_adapter.go
index f611b59..29cf1a8 100644
--- a/internal/parser/treesitter/ruby_adapter.go
+++ b/internal/parser/treesitter/ruby_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/rust_adapter.go b/internal/parser/treesitter/rust_adapter.go
index 57ba62a..40f126e 100644
--- a/internal/parser/treesitter/rust_adapter.go
+++ b/internal/parser/treesitter/rust_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/swift_adapter.go b/internal/parser/treesitter/swift_adapter.go
index 13eb547..617a301 100644
--- a/internal/parser/treesitter/swift_adapter.go
+++ b/internal/parser/treesitter/swift_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (
diff --git a/internal/parser/treesitter/typescript_adapter.go b/internal/parser/treesitter/typescript_adapter.go
index dc6f67c..7eda10c 100644
--- a/internal/parser/treesitter/typescript_adapter.go
+++ b/internal/parser/treesitter/typescript_adapter.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package treesitter
 
 import (