Add Bruno API collection for Phase 1 universal progress endpoints

Bruno API Requests Added:
- universal-progress/Get Progress History.bru
  * Fetch reading progress history for a book
  * Returns historical progress data with timestamps

- universal-progress/Update Universal Progress.bru
  * Update reading progress with automatic format conversion
  * Supports percentage, epubcfi, character, chapter tracking

- universal-progress/Get Universal Progress.bru
  * Get comprehensive progress with all location references
  * Returns percentage, epubcfi, character, chapter data
  * Includes device-specific progress tracking

Collection Features:
- Environment variables: baseUrl, token, deviceId
- Consistent request/response structure
- Proper authentication headers
- JSON request/response bodies

Test Coverage:
- Multi-format progress tracking
- Progress conversion between formats
- Historical progress queries
- Device-specific progress retrieval

Integration:
- Works with Phase 1 universal progress system
- Tests format group detection (reflowable, fixed_layout, comic_archive)
- Validates progress conversion engine

bruno/universal-progress/Get Progress History.bru

@@ -0,0 +1,21 @@
+meta {
+  name: "Get Progress History"
+  type: "http"
+  seq: 3
+}
+
+get {
+  url: "{{baseUrl}}/api/progress/{{mediaItemId}}/history"
+  body: null
+  headers: {
+    Authorization: "Bearer {{jwt}}"
+    Content-Type: "application/json"
+  }
+}
+
+tests {
+  assertions {
+    assert response.status == 200
+    assert hasKey(response.body, "sessions")
+  }
+}