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.yml

@@ -0,0 +1,67 @@
+info:
+  name: Test Collection Rules
+  type: http
+  seq: 1
+http:
+  method: POST
+  url: '{{base_url}}/api/collections/test-rules'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"rules\": [\n      {\n        \"field\": \"genre\",\n     \
+      \   \"operator\": \"equals\",\n        \"value\": \"Science Fiction\""
+  headers:
+  - key: Content-Type
+    value: application/json
+  - key: Authorization
+    value: Bearer {{authToken
+
+docs: |-
+  ## Test Collection Rules
+  
+    Tests collection rules against the library to see which books match, without creating a collection. Useful for previewing what books would be included in a collection with specific rules.
+  
+    **Method:** POST
+  
+    **Endpoint:** /api/collections/test-rules
+  
+    **Authentication:** Bearer token
+  
+    **Request Body:**
+    - `rules` (array): Array of rule objects to test
+      - `field` (string): Field to test (genre, author, copyright_year, tags, etc.)
+      - `operator` (string): Comparison operator
+        - `equals`: Exact match
+        - `contains`: Contains substring (for text fields)
+        - `greater_than`: Greater than (for numeric fields)
+        - `less_than`: Less than (for numeric fields)
+        - `not_equals`: Not equal to
+        - `starts_with`: Starts with
+        - `ends_with`: Ends with
+        - `is_empty`: Field is empty or null
+        - `is_not_empty`: Field is not empty and not null
+      - `value` (string): Value to compare against (not required for is_empty/is_not_empty)
+  
+    **Response:**
+    - `matches` (array): Array of matching books
+      - `id` (string): Book UUID
+      - `title` (string): Book title
+      - `author` (string): Book author
+      - `genre` (string): Book genre
+      - Additional book metadata
+    - `total` (number): Total number of matching books
+  
+    **Status Codes:**
+    - 200: Success - returns matching books
+    - 400: Invalid request (empty rules array, invalid field/operator)
+    - 401: Unauthorized
+    - 500: Internal server error
+  
+    **Example Request:**
+    ```json
+    {
+      "rules": [
+        {
+          "field": "genre",
+          "operator": "equals",
+          "value": "Science Fiction"