diff --git a/src/infra/config/configNormalizers.ts b/src/infra/config/configNormalizers.ts
new file mode 100644
index 0000000..455fe92
--- /dev/null
+++ b/src/infra/config/configNormalizers.ts
@@ -0,0 +1,79 @@
+/**
+ * Shared normalizer/denormalizer functions for config snake_case <-> camelCase conversion.
+ *
+ * Used by both globalConfig.ts and projectConfig.ts.
+ */
+
+import type { ProviderPermissionProfiles } from '../../core/models/provider-profiles.js';
+import type { PieceOverrides } from '../../core/models/persisted-global-config.js';
+
+export function normalizeProviderProfiles(
+  raw: Record<string, { default_permission_mode: unknown; movement_permission_overrides?: Record<string, unknown> }> | undefined,
+): ProviderPermissionProfiles | undefined {
+  if (!raw) return undefined;
+
+  const entries = Object.entries(raw).map(([provider, profile]) => [provider, {
+    defaultPermissionMode: profile.default_permission_mode,
+    movementPermissionOverrides: profile.movement_permission_overrides,
+  }]);
+
+  return Object.fromEntries(entries) as ProviderPermissionProfiles;
+}
+
+export function denormalizeProviderProfiles(
+  profiles: ProviderPermissionProfiles | undefined,
+): Record<string, { default_permission_mode: string; movement_permission_overrides?: Record<string, string> }> | undefined {
+  if (!profiles) return undefined;
+  const entries = Object.entries(profiles);
+  if (entries.length === 0) return undefined;
+
+  return Object.fromEntries(entries.map(([provider, profile]) => [provider, {
+    default_permission_mode: profile.defaultPermissionMode,
+    ...(profile.movementPermissionOverrides
+      ? { movement_permission_overrides: profile.movementPermissionOverrides }
+      : {}),
+  }])) as Record<string, { default_permission_mode: string; movement_permission_overrides?: Record<string, string> }>;
+}
+
+export function normalizePieceOverrides(
+  raw: { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } | undefined,
+): PieceOverrides | undefined {
+  if (!raw) return undefined;
+  return {
+    qualityGates: raw.quality_gates,
+    qualityGatesEditOnly: raw.quality_gates_edit_only,
+    movements: raw.movements
+      ? Object.fromEntries(
+          Object.entries(raw.movements).map(([name, override]) => [
+            name,
+            { qualityGates: override.quality_gates },
+          ])
+        )
+      : undefined,
+  };
+}
+
+export function denormalizePieceOverrides(
+  overrides: PieceOverrides | undefined,
+): { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } | undefined {
+  if (!overrides) return undefined;
+  const result: { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } = {};
+  if (overrides.qualityGates !== undefined) {
+    result.quality_gates = overrides.qualityGates;
+  }
+  if (overrides.qualityGatesEditOnly !== undefined) {
+    result.quality_gates_edit_only = overrides.qualityGatesEditOnly;
+  }
+  if (overrides.movements) {
+    result.movements = Object.fromEntries(
+      Object.entries(overrides.movements).map(([name, override]) => {
+        const movementOverride: { quality_gates?: string[] } = {};
+        if (override.qualityGates !== undefined) {
+          movementOverride.quality_gates = override.qualityGates;
+        }
+        return [name, movementOverride];
+      })
+    );
+  }
+  return Object.keys(result).length > 0 ? result : undefined;
+}
diff --git a/src/infra/config/global/globalConfig.ts b/src/infra/config/global/globalConfig.ts
index 778170b..658b3eb 100644
--- a/src/infra/config/global/globalConfig.ts
+++ b/src/infra/config/global/globalConfig.ts
@@ -10,12 +10,17 @@ import { isAbsolute } from 'node:path';
 import { parse as parseYaml, stringify as stringifyYaml } from 'yaml';
 import { GlobalConfigSchema } from '../../../core/models/index.js';
 import type { Language } from '../../../core/models/index.js';
-import type { PersistedGlobalConfig, PersonaProviderEntry, PieceOverrides } from '../../../core/models/persisted-global-config.js';
-import type { ProviderPermissionProfiles } from '../../../core/models/provider-profiles.js';
+import type { PersistedGlobalConfig, PersonaProviderEntry } from '../../../core/models/persisted-global-config.js';
 import {
   normalizeConfigProviderReference,
   type ConfigProviderReference,
 } from '../providerReference.js';
+import {
+  normalizeProviderProfiles,
+  denormalizeProviderProfiles,
+  normalizePieceOverrides,
+  denormalizePieceOverrides,
+} from '../configNormalizers.js';
 import { getGlobalConfigPath } from '../paths.js';
 import { DEFAULT_LANGUAGE } from '../../../shared/constants.js';
 import { parseProviderModel } from '../../../shared/utils/providerModel.js';
@@ -112,79 +117,6 @@ function normalizePersonaProviders(
   );
 }
 
-function normalizeProviderProfiles(
-  raw: Record<string, { default_permission_mode: unknown; movement_permission_overrides?: Record<string, unknown> }> | undefined,
-): ProviderPermissionProfiles | undefined {
-  if (!raw) return undefined;
-
-  const entries = Object.entries(raw).map(([provider, profile]) => [provider, {
-    defaultPermissionMode: profile.default_permission_mode,
-    movementPermissionOverrides: profile.movement_permission_overrides,
-  }]);
-
-  return Object.fromEntries(entries) as ProviderPermissionProfiles;
-}
-
-function denormalizeProviderProfiles(
-  profiles: ProviderPermissionProfiles | undefined,
-): Record<string, { default_permission_mode: string; movement_permission_overrides?: Record<string, string> }> | undefined {
-  if (!profiles) return undefined;
-  const entries = Object.entries(profiles);
-  if (entries.length === 0) return undefined;
-
-  return Object.fromEntries(entries.map(([provider, profile]) => [provider, {
-    default_permission_mode: profile.defaultPermissionMode,
-    ...(profile.movementPermissionOverrides
-      ? { movement_permission_overrides: profile.movementPermissionOverrides }
-      : {}),
-  }])) as Record<string, { default_permission_mode: string; movement_permission_overrides?: Record<string, string> }>;
-}
-
-/** Normalize piece_overrides from snake_case (YAML) to camelCase (internal) */
-function normalizePieceOverrides(
-  raw: { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } | undefined,
-): PieceOverrides | undefined {
-  if (!raw) return undefined;
-  return {
-    qualityGates: raw.quality_gates,
-    qualityGatesEditOnly: raw.quality_gates_edit_only,
-    movements: raw.movements
-      ? Object.fromEntries(
-          Object.entries(raw.movements).map(([name, override]) => [
-            name,
-            { qualityGates: override.quality_gates },
-          ])
-        )
-      : undefined,
-  };
-}
-
-/** Denormalize piece_overrides from camelCase (internal) to snake_case (YAML) */
-function denormalizePieceOverrides(
-  overrides: PieceOverrides | undefined,
-): { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } | undefined {
-  if (!overrides) return undefined;
-  const result: { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } = {};
-  if (overrides.qualityGates !== undefined) {
-    result.quality_gates = overrides.qualityGates;
-  }
-  if (overrides.qualityGatesEditOnly !== undefined) {
-    result.quality_gates_edit_only = overrides.qualityGatesEditOnly;
-  }
-  if (overrides.movements) {
-    result.movements = Object.fromEntries(
-      Object.entries(overrides.movements).map(([name, override]) => {
-        const movementOverride: { quality_gates?: string[] } = {};
-        if (override.qualityGates !== undefined) {
-          movementOverride.quality_gates = override.qualityGates;
-        }
-        return [name, movementOverride];
-      })
-    );
-  }
-  return Object.keys(result).length > 0 ? result : undefined;
-}
-
 /**
  * Manages global configuration loading and caching.
  * Singleton — use GlobalConfigManager.getInstance().
diff --git a/src/infra/config/project/projectConfig.ts b/src/infra/config/project/projectConfig.ts
index ce5beed..c86bd40 100644
--- a/src/infra/config/project/projectConfig.ts
+++ b/src/infra/config/project/projectConfig.ts
@@ -10,13 +10,18 @@ import { parse, stringify } from 'yaml';
 import { ProjectConfigSchema } from '../../../core/models/index.js';
 import { copyProjectResourcesToDir } from '../../resources/index.js';
 import type { ProjectLocalConfig } from '../types.js';
-import type { ProviderPermissionProfiles } from '../../../core/models/provider-profiles.js';
-import type { AnalyticsConfig, PieceOverrides, SubmoduleSelection } from '../../../core/models/persisted-global-config.js';
+import type { AnalyticsConfig, SubmoduleSelection } from '../../../core/models/persisted-global-config.js';
 import { applyProjectConfigEnvOverrides } from '../env/config-env-overrides.js';
 import {
   normalizeConfigProviderReference,
   type ConfigProviderReference,
 } from '../providerReference.js';
+import {
+  normalizeProviderProfiles,
+  denormalizeProviderProfiles,
+  normalizePieceOverrides,
+  denormalizePieceOverrides,
+} from '../configNormalizers.js';
 import { invalidateResolvedConfigCache } from '../resolutionCache.js';
 
 export type { ProjectLocalConfig } from '../types.js';
@@ -86,28 +91,6 @@ function getConfigPath(projectDir: string): string {
   return join(getConfigDir(projectDir), 'config.yaml');
 }
 
-function normalizeProviderProfiles(raw: Record<string, { default_permission_mode: unknown; movement_permission_overrides?: Record<string, unknown> }> | undefined): ProviderPermissionProfiles | undefined {
-  if (!raw) return undefined;
-  return Object.fromEntries(
-    Object.entries(raw).map(([provider, profile]) => [provider, {
-      defaultPermissionMode: profile.default_permission_mode,
-      movementPermissionOverrides: profile.movement_permission_overrides,
-    }]),
-  ) as ProviderPermissionProfiles;
-}
-
-function denormalizeProviderProfiles(profiles: ProviderPermissionProfiles | undefined): Record<string, { default_permission_mode: string; movement_permission_overrides?: Record<string, string> }> | undefined {
-  if (!profiles) return undefined;
-  const entries = Object.entries(profiles);
-  if (entries.length === 0) return undefined;
-  return Object.fromEntries(entries.map(([provider, profile]) => [provider, {
-    default_permission_mode: profile.defaultPermissionMode,
-    ...(profile.movementPermissionOverrides
-      ? { movement_permission_overrides: profile.movementPermissionOverrides }
-      : {}),
-  }])) as Record<string, { default_permission_mode: string; movement_permission_overrides?: Record<string, string> }>;
-}
-
 function normalizeAnalytics(raw: Record<string, unknown> | undefined): AnalyticsConfig | undefined {
   if (!raw) return undefined;
   const enabled = typeof raw.enabled === 'boolean' ? raw.enabled : undefined;
@@ -133,51 +116,6 @@ function denormalizeAnalytics(config: AnalyticsConfig | undefined): Record<strin
   return Object.keys(raw).length > 0 ? raw : undefined;
 }
 
-/** Normalize piece_overrides from snake_case (YAML) to camelCase (internal) */
-function normalizePieceOverrides(
-  raw: { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } | undefined,
-): PieceOverrides | undefined {
-  if (!raw) return undefined;
-  return {
-    qualityGates: raw.quality_gates,
-    qualityGatesEditOnly: raw.quality_gates_edit_only,
-    movements: raw.movements
-      ? Object.fromEntries(
-          Object.entries(raw.movements).map(([name, override]) => [
-            name,
-            { qualityGates: override.quality_gates },
-          ])
-        )
-      : undefined,
-  };
-}
-
-/** Denormalize piece_overrides from camelCase (internal) to snake_case (YAML) */
-function denormalizePieceOverrides(
-  overrides: PieceOverrides | undefined,
-): { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } | undefined {
-  if (!overrides) return undefined;
-  const result: { quality_gates?: string[]; quality_gates_edit_only?: boolean; movements?: Record<string, { quality_gates?: string[] }> } = {};
-  if (overrides.qualityGates !== undefined) {
-    result.quality_gates = overrides.qualityGates;
-  }
-  if (overrides.qualityGatesEditOnly !== undefined) {
-    result.quality_gates_edit_only = overrides.qualityGatesEditOnly;
-  }
-  if (overrides.movements) {
-    result.movements = Object.fromEntries(
-      Object.entries(overrides.movements).map(([name, override]) => {
-        const movementOverride: { quality_gates?: string[] } = {};
-        if (override.qualityGates !== undefined) {
-          movementOverride.quality_gates = override.qualityGates;
-        }
-        return [name, movementOverride];
-      })
-    );
-  }
-  return Object.keys(result).length > 0 ? result : undefined;
-}
-
 /**
  * Load project configuration from .takt/config.yaml
  */