fix: update paths in installer, tests, and workflows for package rename

- Update install.sh to copy from src/ble_reticulum/
- Update test files with new source paths
- Update GitHub workflows for new package structure
- Remove temporary refactoring helper scripts

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

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

.github/workflows/release.yml

@@ -156,8 +156,8 @@ jobs:
 
       - name: Create package structure
         run: |
-          touch src/RNS/__init__.py
-          touch src/RNS/Interfaces/__init__.py
+          
+          touch src/ble_reticulum/__init__.py
 
       - name: Run tests
         run: |
@@ -165,7 +165,7 @@ jobs:
             --ignore=tests/test_v2_2_identity_handshake.py \
             --ignore=tests/test_v2_2_mac_sorting.py \
             --ignore=tests/test_v2_2_race_conditions.py \
-            --cov=src/RNS/Interfaces \
+            --cov=src/ble_reticulum \
             --cov-report=term-missing \
             --tb=short