Working prototype with dev dashboard

- Created core Engine that coordinates all subsystems
- Extended API with comprehensive endpoints for dev dashboard
- Implemented pure Go vision processing (no GoCV dependency)
- Built full-featured dev dashboard with live capture viewer, region overlays, pixel inspector
- Added D2R detector with actual health/mana reading from orb regions
- Fixed resolution profile registration and region validation
- Generated synthetic test data for development
- Added dev mode support with file backend for testing
- Fixed build tag issues for cross-platform compilation

Prototype features:
✅ Live capture viewer with region overlays
✅ Real-time state detection (game state, health %, mana %)
✅ Pixel inspector (hover for RGB/HSV values)
✅ Capture stats monitoring (FPS, frame count)
✅ Region management with toggle visibility
✅ File upload for testing screenshots
✅ Dark theme dev-focused UI
✅ CORS enabled for dev convenience

Ready for: go run ./cmd/iso-bot --dev --api :8080

plugins/d2r/config.go

@@ -99,8 +99,8 @@ func RegisterProfiles(registry *resolution.Registry) error {
 				"minimap":     image.Rect(1600, 0, 1920, 320),
 				"inventory":   image.Rect(960, 330, 1490, 770),
 				"stash":       image.Rect(430, 330, 960, 770),
-				"skill_left":  image.Rect(194, 1036, 246, 1088),
-				"skill_right": image.Rect(1674, 1036, 1726, 1088),
+				"skill_left":  image.Rect(194, 1030, 246, 1078),
+				"skill_right": image.Rect(1674, 1030, 1726, 1078),
 			},
 		},
 		// 1280x720 (720p) - Secondary resolution
@@ -116,8 +116,8 @@ func RegisterProfiles(registry *resolution.Registry) error {
 				"minimap":     image.Rect(1067, 0, 1280, 213),
 				"inventory":   image.Rect(640, 220, 993, 513),
 				"stash":       image.Rect(287, 220, 640, 513),
-				"skill_left":  image.Rect(129, 691, 164, 726),
-				"skill_right": image.Rect(1116, 691, 1151, 726),
+				"skill_left":  image.Rect(129, 685, 164, 718),
+				"skill_right": image.Rect(1116, 685, 1151, 718),
 			},
 		},
 	}