11.2 README

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

README.md

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+# Frame Processor
+
+Self-hosted ASP.NET Core (.NET 10) service that dithers and color-remaps images for
+Spectra 6 e-ink frames, persists the result to disk, and notifies the frame via MQTT.
+
+## Documentation
+
+- [`SPEC.md`](SPEC.md) — authoritative behavior contract.
+- [`PLAN.md`](PLAN.md) — implementation design and verification checklist.
+- [`CLAUDE.md`](CLAUDE.md) — load-bearing conventions and working notes.
+
+## Quick start
+
+```sh
+docker compose up --build
+```
+
+Brings up `frame-processor` on `:8080` plus a `mosquitto` broker on `:1883`.
+
+## Smoke tests
+
+```sh
+# Health (also reports MQTT connection state)
+curl http://localhost:8080/health
+
+# Upload a file
+curl -H "X-Api-Key: change-me" \
+     -F "image=@photo.jpg" \
+     http://localhost:8080/api/frames/living-room/image
+
+# Upload via URL
+curl -H "X-Api-Key: change-me" \
+     -H "Content-Type: application/json" \
+     -d '{"url":"https://example.com/photo.jpg"}' \
+     http://localhost:8080/api/frames/living-room/image-url
+
+# Fetch the processed PNG (the frame does this on MQTT signal)
+curl http://localhost:8080/i/aabbccddeeff.png > out.png
+
+# Watch MQTT publishes
+mosquitto_sub -t 'frames/#' -v
+```
+
+Configure frames in [`frames.json`](frames.json); service settings in
+[`appsettings.json`](appsettings.json) (or via `Mqtt__Host`-style env vars).