Phase 6: Radio config + path hash mode

frontend/src/test/appFavorites.test.tsx

@@ -174,6 +174,8 @@ const baseConfig = {
   tx_power: 17,
   max_tx_power: 22,
   radio: { freq: 910.525, bw: 62.5, sf: 7, cr: 5 },
+  path_hash_mode: 0,
+  path_hash_mode_supported: false,
 };
 
 const baseSettings = {

frontend/src/test/appSearchJump.test.tsx

@@ -202,6 +202,8 @@ describe('App search jump target handling', () => {
       tx_power: 17,
       max_tx_power: 22,
       radio: { freq: 910.525, bw: 62.5, sf: 7, cr: 5 },
+      path_hash_mode: 0,
+      path_hash_mode_supported: false,
     });
     mocks.api.getSettings.mockResolvedValue({
       max_radio_contacts: 200,

frontend/src/test/appStartupHash.test.tsx

@@ -158,6 +158,8 @@ describe('App startup hash resolution', () => {
       tx_power: 17,
       max_tx_power: 22,
       radio: { freq: 910.525, bw: 62.5, sf: 7, cr: 5 },
+      path_hash_mode: 0,
+      path_hash_mode_supported: false,
     });
     mocks.api.getSettings.mockResolvedValue({
       max_radio_contacts: 200,

frontend/src/test/pathUtils.test.ts

@@ -41,6 +41,8 @@ function createConfig(overrides: Partial<RadioConfig> = {}): RadioConfig {
     tx_power: 10,
     max_tx_power: 20,
     radio: { freq: 915, bw: 250, sf: 10, cr: 8 },
+    path_hash_mode: 0,
+    path_hash_mode_supported: false,
     ...overrides,
   };
 }

frontend/src/test/settingsModal.test.tsx

@@ -30,6 +30,8 @@ const baseConfig: RadioConfig = {
     sf: 7,
     cr: 5,
   },
+  path_hash_mode: 0,
+  path_hash_mode_supported: false,
 };
 
 const baseHealth: HealthStatus = {