refactor(bruno): reorganize file structure from bruno-yaml to flat bruno directory

- Move all files from bruno-yaml/* to bruno/*
- Maintains existing directory structure within categories
- Updates bruno/user/auth files with OAuth2 refresh token flow
- Updates bruno/user/profile files for user profile management
- Adds bruno/dashboard/ directory with dashboard API tests
- Preserves all existing test scenarios and OpenCollection YAML format
- No functional changes - file reorganization only

bruno/devices/scenarios/regenerate-token-notfound.yml

@@ -0,0 +1,24 @@
+info:
+  name: Regenerate Device Token - Not Found
+  type: http
+  seq: 4
+http:
+  method: PUT
+  url: '{{base_url}}/api/devices/00000000-0000-0000-0000-000000000000/regenerate-token'
+  auth: bearer
+  body:
+    type: none
+
+docs: |-
+  ## Regenerate Device Token - Not Found
+  
+    Tests that token regeneration returns 404 for non-existent devices.
+  
+    **Expected Behavior:** Returns 404 Not Found when device UUID doesn't exist
+  
+    **Status Codes:**
+    - 404: Device not found
+  
+    **Use Case:** Verify proper error handling for invalid device IDs
+  
+    **Setup:** Use all-zero UUID (guaranteed to not exist in database)