Stylized Rock Generator v2.0.0: Haertung, Presets, LODs, Material, Tests

- Fix: smart_project/dissolve_limited angle_limit jetzt in Radiant (Blender 4.x/5.x)
- Fix: Lightmap-UV-Kanal vor lightmap_pack aktiv setzen (UV0 nicht mehr ueberschrieben)
- Fehlerbehandlung pro bpy.ops-Call; einzelner Rock-Fehler bricht Batch nicht ab
- Modaler Batch-Modus mit Progress-Bar (ab modal_threshold)
- Bevel + Weighted Normal Toggle
- LOD-Set als fbx_type=LodGroup-Gruppe fuer Unreal
- Preset-System (JSON) + eingebaute Presets
- Platzhalter-Material-Zuweisung
- Headless-Testskript (tests/test_rock_gen.py)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

LICENSE

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+Stylized Rock Generator - Blender Addon
+Copyright (C) 2026 D4rkst3r
+
+This program is free software: you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <https://www.gnu.org/licenses/>.
+
+Note: Blender-Addons, die das `bpy`-Modul nutzen, werden ueblicherweise unter
+GPL lizenziert. Bei Bedarf hier den vollstaendigen GPLv3-Text ergaenzen
+(https://www.gnu.org/licenses/gpl-3.0.txt) oder auf eine andere Lizenz wechseln.