vendor: add complete multi-platform support (runtime + dev)

.gitignore

@@ -8,6 +8,7 @@ __pycache__/
 *.egg-info/
 .ipynb_checkpoints/
 
+
 # Virtual environments
 .venv/
 .venv312/
@@ -16,25 +17,30 @@ venv/
 ENV/
 env/
 
+
 # Build artifacts
 dist/
 build/
 *.spec
 wheelhouse/
 
+
 # PyInstaller temporary files
 src/*_frozen.py
 
+
 # Testing
 .pytest_cache/
 .cache/
 coverage/
 
+
 # Type checking
 .mypy_cache/
 .pyre/
 .pytype/
 
+
 # IDEs
 .vscode/
 .idea/
@@ -42,38 +48,50 @@ coverage/
 *.swo
 *~
 
+
 # OS
 .DS_Store
 Thumbs.db
 
+
 # Environment
 .env
 .envrc
 
+
 # Logs
 logs/
 *.log
 
+
 # Database
 *.sqlite3
 *.db
 
+
 # Project specific
 .wallet/
 releases/*/
 _toDelete/
 .potentialfix.md
 
+
 # PGP keys (except test data)
 *.asc
 !tests/data/recipient.asc
 
-# Vendor cleanup (wrong architectures/test builds)
-vendor/linux-aarch64/
+
+# Vendor - ignore test/experimental builds only
 vendor/macos-arm64-docker/
 vendor/*-docker/
+vendor/*-test/
 
-# Keep official vendor directories
-# vendor/macos-arm64/
-# vendor/linux-x86_64/
+
+# Keep ALL official vendor directories (runtime + dev):
+# vendor/macos-arm64/         - macOS Apple Silicon (runtime)
+# vendor/macos-arm64-dev/     - macOS Apple Silicon (dev with pytest)
+# vendor/linux-x86_64/        - Linux Intel/AMD (runtime)
+# vendor/linux-x86_64-dev/    - Linux Intel/AMD (dev with pytest)
+# vendor/linux-aarch64/       - Linux ARM64 (runtime)
+# vendor/linux-aarch64-dev/   - Linux ARM64 (dev with pytest)
 # vendor/PROVENANCE.md