refactor: update SAT3_Trajectory to 9 design variables with refined bounds

Updated configuration based on user adjustments:
- Reduced from 11 to 9 design variables (disabled blank_backface_angle and inner_circular_rib_dia)
- Refined parameter bounds for lateral supports

Design Variable Changes:
- lateral_inner_angle: min 20.0° (was 25.0°)
- lateral_outer_pivot: range 4.0-9.0mm, baseline 5.5mm (was 9.0-12.0mm, baseline 10.40mm)
- lateral_middle_pivot: range 12.0-25.0mm (was 15.0-27.0mm)
- blank_backface_angle: disabled (fixed at 4.00°)
- inner_circular_rib_dia: disabled (fixed at 534.00mm)

Documentation Updated:
- README.md: Updated design variable table with correct ranges and baselines
- STUDY_REPORT.md: Updated to reflect 9 enabled variables
- optimization_config.json: User-modified bounds applied

Rationale:
- Focus optimization on lateral supports and whiffle tree
- Fix geometry parameters to reduce search space
- Tighter bounds on critical lateral parameters

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

studies/M1_Mirror/SAT3_Trajectory/1_setup/optimization_config.json

@@ -27,7 +27,7 @@
     {
       "name": "lateral_inner_angle",
       "expression_name": "lateral_inner_angle",
-      "min": 25.0,
+      "min": 20.0,
       "max": 30.0,
       "baseline": 26.79,
       "units": "degrees",
@@ -47,9 +47,9 @@
     {
       "name": "lateral_outer_pivot",
       "expression_name": "lateral_outer_pivot",
-      "min": 9.0,
-      "max": 12.0,
-      "baseline": 10.40,
+      "min": 4,
+      "max": 9,
+      "baseline": 5.5,
       "units": "mm",
       "enabled": true,
       "notes": "Outer lateral pivot position"
@@ -58,7 +58,7 @@
       "name": "lateral_inner_pivot",
       "expression_name": "lateral_inner_pivot",
       "min": 5.0,
-      "max": 12.0,
+      "max": 11.0,
       "baseline": 10.07,
       "units": "mm",
       "enabled": true,
@@ -67,8 +67,8 @@
     {
       "name": "lateral_middle_pivot",
       "expression_name": "lateral_middle_pivot",
-      "min": 15.0,
-      "max": 27.0,
+      "min": 12.0,
+      "max": 25.0,
       "baseline": 20.73,
       "units": "mm",
       "enabled": true,
@@ -117,11 +117,11 @@
     {
       "name": "blank_backface_angle",
       "expression_name": "blank_backface_angle",
-      "min": 4.1,
+      "min": 4.0,
       "max": 4.5,
-      "baseline": 4.15,
+      "baseline": 4.00,
       "units": "degrees",
-      "enabled": true,
+      "enabled": false,
       "notes": "Blank backface angle"
     },
     {
@@ -131,7 +131,7 @@
       "max": 620.0,
       "baseline": 534.00,
       "units": "mm",
-      "enabled": true,
+      "enabled": false,
       "notes": "Inner circular rib diameter"
     }
   ],