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/collections/scenarios/Test Collection Rules - Copyright Year Greater Than.yml

@@ -0,0 +1,32 @@
+info:
+  name: Test Collection Rules - Copyright Year Greater Than
+  type: http
+  seq: 3
+http:
+  method: POST
+  url: '{{base_url}}/api/collections/test-rules'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"rules\": [\n      {\n        \"field\": \"copyright_year\"\
+      ,\n        \"operator\": \"greater_than\",\n        \"value\": \"2000\""
+  headers:
+  - key: Content-Type
+    value: application/json
+  - key: Authorization
+    value: Bearer {{authToken
+
+docs: |-
+  ## Test Collection Rules - Copyright Year Greater Than
+  
+    Tests the "greater_than" operator on the copyright_year field to find books published after a specific year.
+  
+    **Example Use Case:** Creating a "Modern Books" collection with books published after 2000.
+  
+    **Operator:** `greater_than` - Matches if the field value is greater than the specified value (numeric comparison).
+  
+    **Field:** `copyright_year` - The year the book was copyrighted/published.
+  
+    **Expected Result:** Returns all books with copyright_year greater than 2000 (i.e., published in 2001 or later).
+  
+    **Purpose:** Demonstrates numeric comparison operators for creating date-based collections, useful for organizing books by publication era.