Initial project: ESP32-S3 e-ink photo frame with web UI

ESP32-S3 firmware (PlatformIO) that fetches JPEGs from a photo server,
decodes on-device with PSRAM, Floyd-Steinberg dithers to the Spectra 6
6-color palette, and displays on a 7.3" GDEP073E01 e-paper panel.
Deep sleeps 1 hour between updates.

Photo server (Python/Flask) with web UI for photo management, Traefik
routing at photos.haunt.house with Google OAuth, and Home Assistant
REST sensor integration.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,17 @@
+# PlatformIO
+firmware/.pio/
+firmware/.vscode/
+
+# Python
+server/__pycache__/
+server/*.pyc
+server/.venv/
+
+# Photos (user data, not checked in)
+server/photos/
+
+# Secrets
+.env
+
+# macOS
+.DS_Store