[packages.dart] chore: migrate workspace to hermetic Bazel build environment

.gitignore

@@ -1,22 +1,55 @@
+# ==========================================
+# 🌌 Federated Workspaces - Ultimate Ignores
+# ==========================================
+
+# --- System & Editor Files ---
 .DS_Store
-.dart_tool/
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+.vscode/
 .idea/
+*.swp
+*.swo
 
-.packages
-.pub/
-pubspec.lock
+# --- Bazel Convenience Symlinks & Outputs ---
+bazel-*
+bazel_out/
 
-build/
-*.iml
+# --- C/C++ Outputs ---
+*.o
+*.obj
+*.a
+*.lib
+*.so
+*.dylib
+*.dll
+*.out
+*.exe
 
-DerivedData/
+# --- Go Outputs ---
+*.test
+*.prof
+__debug_bin
+MODULE.bazel.lock
 
+# --- Node / JavaScript / pnpm ---
+node_modules/
+.npm/
+.pnpm-store/
+.pnpm-debug.log*
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
 
-
-# Files and directories created by pub
+# --- Dart / Flutter ---
 .dart_tool/
 .packages
+.pub-cache/
 .pub/
-build/
-
-*.SF2
+/build/
+*.flutter-plugins
+*.flutter-plugins-dependencies