diff --git a/apps/desktop/main/config.ts b/apps/desktop/main/config.ts
index 123be51f..c58637f4 100644
--- a/apps/desktop/main/config.ts
+++ b/apps/desktop/main/config.ts
@@ -2,7 +2,7 @@
  * Electron-Specific Runtime Configuration
  *
  * Runtime configuration and state for the Electron main process.
- * For shared constants, see backend/config.ts
+ * For shared constants, see apps/desktop/config.ts
  */
 
 // Re-export shared constants for convenience
diff --git a/apps/desktop/main/core-glue.ts b/apps/desktop/main/core-glue.ts
index 5c3da5e4..7eb4a80e 100644
--- a/apps/desktop/main/core-glue.ts
+++ b/apps/desktop/main/core-glue.ts
@@ -29,7 +29,7 @@
  *
  * The URL loaded stays `peek://app/background.html` — the protocol
  * handler already resolves that to `rootDir/app/background.html`, and
- * `WEB_CORE_ADDRESS` in `backend/config.ts` is used elsewhere (e.g.
+ * `WEB_CORE_ADDRESS` in `apps/desktop/config.ts` is used elsewhere (e.g.
  * `closeOrHideWindow` refuses to close the core window by address
  * match, `countVisibleWindows` excludes it, session restore skips it).
  *
diff --git a/apps/desktop/tests/README.md b/apps/desktop/tests/README.md
index f3cdf192..20592538 100644
--- a/apps/desktop/tests/README.md
+++ b/apps/desktop/tests/README.md
@@ -170,7 +170,7 @@ Both test frameworks cover equivalent functionality:
 | Extension windows | `Peeks`, `Slides`, `Groups` | N/A (UI only) |
 
 **Note:** UI-specific tests (Settings, Cmd Palette, extension windows) only run via Playwright.
-Tauri Rust tests focus on backend/datastore functionality.
+Tauri Rust tests focus on apps/datastore functionality.
 
 ## Writing Tests
 
@@ -282,7 +282,7 @@ When working on tests:
 
 1. **Cross-backend tests go in `tests/desktop/`**
 2. **Use `desktopApp` fixture, never `_electron` directly** in cross-backend tests
-3. **Backend-specific tests go in `backend/{name}/tests/`**
+3. **Backend-specific tests go in `apps/{name}/tests/`**
 4. **Always use PROFILE for data isolation**
 5. **Test both backends before marking complete:** `yarn test`
 6. **Follow existing patterns** - look at smoke.spec.ts for examples
diff --git a/packages/schema/fidelity.test.js b/packages/schema/fidelity.test.js
index cf589d84..fe8e498b 100644
--- a/packages/schema/fidelity.test.js
+++ b/packages/schema/fidelity.test.js
@@ -3,12 +3,12 @@
  * Schema Fidelity Tests
  *
  * Verifies that all backend schema implementations match the canonical schema.
- * Run with: node schema/fidelity.test.js
+ * Run with: node packages/schema/fidelity.test.js
  *           yarn schema:test
  *
  * These tests:
  * 1. Parse CREATE TABLE statements from each backend
- * 2. Compare against required sync columns from schema/v1.json
+ * 2. Compare against required sync columns from packages/schema/v1.json
  * 3. Verify timestamp columns use INTEGER (not TEXT)
  * 4. Verify id columns use TEXT (not INTEGER)
  */
@@ -81,7 +81,7 @@ function parseCreateTable(sql, tableName) {
  * Read schema from Electron datastore.ts
  */
 function getElectronSchema() {
-  const path = join(__dirname, '../apps/desktop/main/datastore.ts');
+  const path = join(__dirname, '../../apps/desktop/main/datastore.ts');
   return readFileSync(path, 'utf-8');
 }
 
@@ -97,7 +97,7 @@ function getServerSchema() {
  * Read schema from Tauri Desktop datastore.rs
  */
 function getTauriDesktopSchema() {
-  const path = join(__dirname, '../apps/tauri-desktop/src-tauri/src/datastore.rs');
+  const path = join(__dirname, '../../apps/tauri-desktop/src-tauri/src/datastore.rs');
   return readFileSync(path, 'utf-8');
 }
 
@@ -105,7 +105,7 @@ function getTauriDesktopSchema() {
  * Read schema from Tauri Mobile lib.rs
  */
 function getTauriMobileSchema() {
-  const path = join(__dirname, '../apps/mobile/src-tauri/src/lib.rs');
+  const path = join(__dirname, '../../apps/mobile/src-tauri/src/lib.rs');
   return readFileSync(path, 'utf-8');
 }
 
@@ -359,7 +359,7 @@ describe('Schema Fidelity Tests', () => {
       const schemaValues = parseSchemaCheckValues('items', 'type');
       assert.ok(schemaValues, 'v1.json items.type should have a CHECK constraint');
 
-      const typesTs = readFileSync(join(__dirname, '../backend/types/index.ts'), 'utf-8');
+      const typesTs = readFileSync(join(__dirname, '../../apps/desktop/types/index.ts'), 'utf-8');
       const match = typesTs.match(/export type ItemType\s*=\s*([^;]+);/);
       assert.ok(match, 'ItemType should be defined in types/index.ts');
 
@@ -374,7 +374,7 @@ describe('Schema Fidelity Tests', () => {
 
   describe('Table Completeness', () => {
     test('all tables in Electron createTableStatements are in TypeScript TableName', () => {
-      const typesTs = readFileSync(join(__dirname, '../backend/types/index.ts'), 'utf-8');
+      const typesTs = readFileSync(join(__dirname, '../../apps/desktop/types/index.ts'), 'utf-8');
 
       // Extract TableName union values
       const tableNameMatch = typesTs.match(/export type TableName\s*=([^;]+);/s);
@@ -405,7 +405,7 @@ describe('Schema Fidelity Tests', () => {
     });
 
     test('tableNames array matches TableName union', () => {
-      const typesTs = readFileSync(join(__dirname, '../backend/types/index.ts'), 'utf-8');
+      const typesTs = readFileSync(join(__dirname, '../../apps/desktop/types/index.ts'), 'utf-8');
 
       // Extract TableName union values
       const tableNameMatch = typesTs.match(/export type TableName\s*=([^;]+);/s);