Initial commit - Phase 3/4

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

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

.gitignore

@@ -35,3 +35,26 @@ logs/
 app/frontend/node_modules/
 app/frontend/build/
 app/frontend/.cache/
+
+# All node_modules (including in pi-gen staging)
+**/node_modules/
+
+# WiFi credentials (never commit these)
+wifi_credentials.txt
+wifi_credentials.json
+**/wifi_credentials*
+secrets/
+.secrets/
+
+# Coverage and test artifacts
+.coverage
+coverage.xml
+htmlcov/
+
+# Build artifacts
+*.img
+*.img.xz
+
+# Temp and cache
+.pm3-test/
+=0.2.5