diff --git a/cmd/gh-aw/help_sections_order_test.go b/cmd/gh-aw/help_sections_order_test.go
index af418c96a1b..10e9b83ca87 100644
--- a/cmd/gh-aw/help_sections_order_test.go
+++ b/cmd/gh-aw/help_sections_order_test.go
@@ -11,6 +11,7 @@ import (
 )
 
 func TestUsageAppearsBeforeExamplesInHelpOutput(t *testing.T) {
+	t.Parallel()
 	commands := []*cobra.Command{
 		compileCmd,
 		disableCmd,
@@ -23,6 +24,7 @@ func TestUsageAppearsBeforeExamplesInHelpOutput(t *testing.T) {
 
 	for _, cmd := range commands {
 		t.Run(cmd.CommandPath(), func(t *testing.T) {
+			t.Parallel()
 			var out bytes.Buffer
 			originalOut := cmd.OutOrStdout()
 			originalErr := cmd.ErrOrStderr()
diff --git a/cmd/gh-aw/short_description_test.go b/cmd/gh-aw/short_description_test.go
index dbce7872363..df20a1a7cab 100644
--- a/cmd/gh-aw/short_description_test.go
+++ b/cmd/gh-aw/short_description_test.go
@@ -18,6 +18,7 @@ func TestShortDescriptionConsistency(t *testing.T) {
 	t.Parallel()
 	for _, cmd := range collectCommandTree(rootCmd) {
 		t.Run("command "+cmd.Name()+" has no trailing punctuation", func(t *testing.T) {
+			t.Parallel()
 			short := cmd.Short
 			if short == "" {
 				t.Skip("Command has no Short description")
diff --git a/pkg/actionpins/actionpins_internal_test.go b/pkg/actionpins/actionpins_internal_test.go
index 88d8739a7c4..86e51b9628c 100644
--- a/pkg/actionpins/actionpins_internal_test.go
+++ b/pkg/actionpins/actionpins_internal_test.go
@@ -360,6 +360,7 @@ func TestFindCompatiblePin_SemverFallback(t *testing.T) {
 }
 
 func TestFindVersionBySHA_ReturnsVersionForKnownSHA(t *testing.T) {
+	t.Parallel()
 	t.Run("returns version for a known SHA in embedded data", func(t *testing.T) {
 		pins := GetActionPinsByRepo("actions/checkout")
 		require.NotEmpty(t, pins, "prerequisite: embedded pins must exist for actions/checkout")
diff --git a/pkg/actionpins/spec_test.go b/pkg/actionpins/spec_test.go
index 0c6971c927e..994db57b946 100644
--- a/pkg/actionpins/spec_test.go
+++ b/pkg/actionpins/spec_test.go
@@ -83,6 +83,7 @@ func TestSpec_PublicAPI_FormatPinnedActionReference(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			if tt.wantPanic != "" {
 				assert.Empty(t, tt.expected, "test case %q: wantPanic and expected are mutually exclusive", tt.name)
 				require.PanicsWithValue(t, tt.wantPanic, func() {
@@ -140,6 +141,7 @@ func TestSpec_PublicAPI_FormatCacheKey(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			result := actionpins.FormatCacheKey(tt.repo, tt.version)
 			assert.Equal(t, tt.expected, result, "FormatCacheKey(%q, %q) should match spec format", tt.repo, tt.version)
 		})
@@ -188,6 +190,7 @@ func TestSpec_PublicAPI_ExtractRepo(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			result := actionpins.ExtractRepo(tt.uses)
 			assert.Equal(t, tt.expected, result, "ExtractRepo(%q) should return repo part", tt.uses)
 		})
@@ -236,6 +239,7 @@ func TestSpec_PublicAPI_ExtractVersion(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			result := actionpins.ExtractVersion(tt.uses)
 			assert.Equal(t, tt.expected, result, "ExtractVersion(%q) should return version part", tt.uses)
 		})
@@ -359,6 +363,7 @@ func TestSpec_PublicAPI_ResolveActionPin_EnforcePinned(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			var failures []actionpins.ResolutionFailure
 			ctx := &actionpins.PinContext{
 				Resolver:        tt.resolver,
@@ -703,6 +708,7 @@ func TestSpec_PublicAPI_RecordResolutionFailure(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			var failures []actionpins.ResolutionFailure
 			ctx := &actionpins.PinContext{
 				Resolver: tt.resolver,
diff --git a/pkg/agentdrain/anomaly_test.go b/pkg/agentdrain/anomaly_test.go
index 2208fb84234..8499c18274a 100644
--- a/pkg/agentdrain/anomaly_test.go
+++ b/pkg/agentdrain/anomaly_test.go
@@ -486,6 +486,7 @@ func TestAnalyzeEvent(t *testing.T) {
 
 // TestAnalyzeEvent_Variants covers edge-case event shapes: empty stage and nil/empty fields.
 func TestAnalyzeEvent_Variants(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name       string
 		evt        AgentEvent
diff --git a/pkg/agentdrain/miner_test.go b/pkg/agentdrain/miner_test.go
index ac95d443f6d..fcb59af9251 100644
--- a/pkg/agentdrain/miner_test.go
+++ b/pkg/agentdrain/miner_test.go
@@ -13,6 +13,7 @@ import (
 )
 
 func TestNewMiner(t *testing.T) {
+	t.Parallel()
 	cfg := DefaultConfig()
 	m, err := NewMiner(cfg)
 	require.NoError(t, err, "NewMiner should not return an error")
diff --git a/pkg/agentdrain/spec_test.go b/pkg/agentdrain/spec_test.go
index 8f782e1f3d2..63f4fa96ca6 100644
--- a/pkg/agentdrain/spec_test.go
+++ b/pkg/agentdrain/spec_test.go
@@ -186,6 +186,7 @@ func TestSpec_PublicAPI_Utility_Tokenize(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			result := agentdrain.Tokenize(tt.line)
 			assert.Equal(t, tt.expected, result, "Tokenize(%q) mismatch", tt.line)
 		})
@@ -197,6 +198,7 @@ func TestSpec_PublicAPI_Utility_Tokenize(t *testing.T) {
 func TestSpec_PublicAPI_Utility_FlattenEvent(t *testing.T) {
 	t.Parallel()
 	t.Run("excludes listed fields", func(t *testing.T) {
+		t.Parallel()
 		evt := agentdrain.AgentEvent{
 			Stage: "plan",
 			Fields: map[string]string{
@@ -210,6 +212,7 @@ func TestSpec_PublicAPI_Utility_FlattenEvent(t *testing.T) {
 	})
 
 	t.Run("produces deterministic output for same input", func(t *testing.T) {
+		t.Parallel()
 		evt := agentdrain.AgentEvent{
 			Stage: "tool_call",
 			Fields: map[string]string{
@@ -257,6 +260,7 @@ func TestSpec_PublicAPI_Utility_StageSequence(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			result := agentdrain.StageSequence(tt.events)
 			assert.Equal(t, tt.expected, result, "StageSequence mismatch for %q", tt.name)
 		})
diff --git a/pkg/cli/access_log_test.go b/pkg/cli/access_log_test.go
index 8cd38cb6b8e..27cd15e95ea 100644
--- a/pkg/cli/access_log_test.go
+++ b/pkg/cli/access_log_test.go
@@ -158,6 +158,7 @@ func TestExtractDomainFromURL(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.url, func(t *testing.T) {
+			t.Parallel()
 			result := stringutil.ExtractDomainFromURL(tt.url)
 			assert.Equal(t, tt.expected, result, "should extract correct domain from URL")
 		})
@@ -225,6 +226,7 @@ func TestParseSquidLogLine(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			result, err := parseSquidLogLine(tt.line)
 
 			if tt.shouldErr {
@@ -296,6 +298,7 @@ func TestAddMetrics(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			tt.base.AddMetrics(tt.toAdd)
 			assert.Equal(t, tt.expected.TotalRequests, tt.base.TotalRequests, "total requests should match")
 			assert.Equal(t, tt.expected.AllowedRequests, tt.base.AllowedRequests, "allowed requests should match")
diff --git a/pkg/cli/actions_build_command_test.go b/pkg/cli/actions_build_command_test.go
index 318293cbff5..56e8869a436 100644
--- a/pkg/cli/actions_build_command_test.go
+++ b/pkg/cli/actions_build_command_test.go
@@ -58,6 +58,7 @@ func TestActionsCleanCommand_NoActionsDir(t *testing.T) {
 }
 
 func TestGetActionDirectories(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name        string
 		setup       func(string) error
@@ -129,6 +130,7 @@ func TestGetActionDirectories(t *testing.T) {
 }
 
 func TestGetActionDirectories_SortedOutput(t *testing.T) {
+	t.Parallel()
 	tmpDir := t.TempDir()
 	actionsDir := filepath.Join(tmpDir, "actions")
 	// Create directories in reverse-alphabetical order to verify sorting
@@ -142,6 +144,7 @@ func TestGetActionDirectories_SortedOutput(t *testing.T) {
 }
 
 func TestValidateActionYml(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name             string
 		actionYmlContent string
@@ -243,6 +246,7 @@ runs:
 }
 
 func TestGetActionDependencies(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name       string
 		actionName string
@@ -262,6 +266,7 @@ func TestGetActionDependencies(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
 			deps := getActionDependencies(tt.actionName)
 			assert.GreaterOrEqual(t, len(deps), tt.minDeps, "Should return at least minimum dependencies")
 		})
@@ -326,6 +331,7 @@ func TestActionsCleanCommand_EmptyActionsDir(t *testing.T) {
 }
 
 func TestIsCompositeAction(t *testing.T) {
+	t.Parallel()
 	tests := []struct {
 		name             string
 		actionYmlContent string
diff --git a/pkg/cli/add_command_test.go b/pkg/cli/add_command_test.go
index af467e00cdf..ea90a8c037e 100644
--- a/pkg/cli/add_command_test.go
+++ b/pkg/cli/add_command_test.go
@@ -24,6 +24,7 @@ func validateEngineStub(engine string) error {
 }
 
 func TestNewAddCommand(t *testing.T) {
+	t.Parallel()
 	cmd := NewAddCommand(validateEngineStub)
 
 	require.NotNil(t, cmd, "NewAddCommand should not return nil")
@@ -84,6 +85,7 @@ func TestNewAddCommand(t *testing.T) {
 }
 
 func TestNewAddCommand_MentionsEnterpriseSourceResolution(t *testing.T) {
+	t.Parallel()
 	cmd := NewAddCommand(validateEngineStub)
 	require.NotNil(t, cmd)