Add contractors by residence endpoint and Bruno API collection

- Add GET /contractors/by-residence/:residence_id/ endpoint
- Create comprehensive Bruno API collection (89 endpoints)
- Collection covers all API endpoints with Local and Dev environments

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

bruno-collections/casera-api/Tasks/Create Task.bru

@@ -0,0 +1,27 @@
+meta {
+  name: Create Task
+  type: http
+  seq: 2
+}
+
+post {
+  url: {{api_url}}/tasks/
+  body: json
+  auth: none
+}
+
+headers {
+  Authorization: Token {{auth_token}}
+}
+
+body:json {
+  {
+    "residence_id": 1,
+    "title": "Clean gutters",
+    "description": "Clear debris from all gutters",
+    "category_id": 1,
+    "priority_id": 2,
+    "frequency_id": 3,
+    "due_date": "2024-12-31"
+  }
+}