feat: Add AtomizerField training data export and intelligent model discovery

Major additions:
- Training data export system for AtomizerField neural network training
- Bracket stiffness optimization study with 50+ training samples
- Intelligent NX model discovery (auto-detect solutions, expressions, mesh)
- Result extractors module for displacement, stress, frequency, mass
- User-generated NX journals for advanced workflows
- Archive structure for legacy scripts and test outputs
- Protocol documentation and dashboard launcher

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

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

examples/Models/Bracket/export_field_dz.fld

@@ -0,0 +1,42 @@
+FIELD: [ResultProbe] : [TABLE]
+FIELD LOCK STATE: [NO]
+DUPLICATE_VALUE_OPTION: [0]
+PARAMETERIZE INDEPENDENT DOMAIN: [NO]
+PERSIST INTERPOL: [NO]
+CREATE INTERPOLATOR: [NO]
+FALLBACK DEFAULT INTERPOLATOR: [YES]
+INTERPOL: [4]
+VALUES OUTSIDE: [2]
+REMOVE DELAUNAY SLIVERS: [NO]
+INDEP VAR: [step] : [] : [] : [0]
+BOUNDS: [0] : [YES] : [0] : [YES] : [21] : [0]
+INDEP VAR: [node_id] : [] : [] : [5]
+BOUNDS: [4] : [YES] : [386] : [YES] : [21] : [382]
+DEP VAR: [x] : [Length] : [mm] : [0]
+DESCRIPTION: ResultProbe
+DESCRIPTION: dz
+DESCRIPTION: 21-Nov-25
+DESCRIPTION: 10:01:00
+START DATA
+0, 382, -0.186936527490616
+0, 383, -0.187061965465546
+0, 384, -0.19048672914505
+0, 385, -0.187501460313797
+0, 386, -0.188479736447334
+0, 4, -0.194222882390022
+0, 11, -0.186952710151672
+0, 14, -0.186952978372574
+0, 8, -0.194223284721375
+0, 122, -0.186969518661499
+0, 123, -0.187117353081703
+0, 124, -0.18759161233902
+0, 125, -0.190486311912537
+0, 126, -0.188595801591873
+0, 129, -0.186926871538162
+0, 58, -0.194396913051605
+0, 153, -0.186969801783562
+0, 154, -0.187117666006088
+0, 155, -0.190486669540405
+0, 156, -0.18759198486805
+0, 157, -0.188596233725548
+END DATA