feat(api): expose valuation history index (#1596)

* feat(api): expose valuation history index

* fix(api): hide valuation exception details

* fix(api): reuse eager-loaded valuation entries

* fix(api): tighten valuation index contracts

* fix(api): scope valuation filter errors

* docs(api): nest valuation account filter format

* Fix merge conflict mistakes

---------

Signed-off-by: Juan José Mata <juanjo.mata@gmail.com>
Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>
Co-authored-by: Juan José Mata <jjmata@jjmata.com>

docs/api/openapi.yaml

@@ -579,6 +579,18 @@ components:
         updated_at:
           type: string
           format: date-time
+    ValuationCollection:
+      type: object
+      required:
+      - valuations
+      - pagination
+      properties:
+        valuations:
+          type: array
+          items:
+            "$ref": "#/components/schemas/Valuation"
+        pagination:
+          "$ref": "#/components/schemas/Pagination"
     DeleteResponse:
       type: object
       required:
@@ -2952,19 +2964,72 @@ paths:
               schema:
                 "$ref": "#/components/schemas/ErrorResponse"
   "/api/v1/valuations":
+    get:
+      summary: List valuations
+      tags:
+      - Valuations
+      security:
+      - apiKeyAuth: []
+      parameters:
+      - name: page
+        in: query
+        required: false
+        description: 'Page number (default: 1)'
+        schema:
+          type: integer
+      - name: per_page
+        in: query
+        required: false
+        description: 'Items per page (default: 25, max: 100)'
+        schema:
+          type: integer
+      - name: account_id
+        in: query
+        required: false
+        description: Filter by account ID
+        schema:
+          type: string
+          format: uuid
+      - name: start_date
+        in: query
+        required: false
+        description: Filter valuations from this date
+        schema:
+          type: string
+          format: date
+      - name: end_date
+        in: query
+        required: false
+        description: Filter valuations until this date
+        schema:
+          type: string
+          format: date
+      responses:
+        '200':
+          description: valuations listed
+          content:
+            application/json:
+              schema:
+                "$ref": "#/components/schemas/ValuationCollection"
+        '401':
+          description: unauthorized
+          content:
+            application/json:
+              schema:
+                "$ref": "#/components/schemas/ErrorResponse"
+        '422':
+          description: invalid account filter
+          content:
+            application/json:
+              schema:
+                "$ref": "#/components/schemas/ErrorResponse"
     post:
       summary: Create valuation
       tags:
       - Valuations
       security:
       - apiKeyAuth: []
-      parameters:
-      - name: Authorization
-        in: header
-        required: true
-        schema:
-          type: string
-        description: Bearer token with write scope
+      parameters: []
       responses:
         '201':
           description: valuation created
@@ -3016,12 +3081,6 @@ paths:
         required: true
   "/api/v1/valuations/{id}":
     parameters:
-    - name: Authorization
-      in: header
-      required: true
-      schema:
-        type: string
-      description: Bearer token
     - name: id
       in: path
       required: true