CC2 ↔ Spoolman bridge with NFC tag generator

- Reads /opt/usr/canvas_record_info.json over SSH (pinned host key,
  restricted key), decodes Spoolman spool ids from the tag weight
- Mirrors spools into CC2 Control's spool library and assigns slots,
  keeps its own slot mapping, sets Spoolman locations
- Books the drop of CC2 Control's measured remaining weight to Spoolman
  after each print, idempotent across restarts and interrupted bookings
- Dry-run by default; web UI for settings, SSH key, status and log
- Tag generator for NFC Tools command chains (NTAG213/215/216)
- Tests, mock environment, Dockerfile, Gitea Actions CI

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014GcEk5tkfFSYD6NTF66NkC

docker-compose.yml

@@ -0,0 +1,11 @@
+# Beispiel für den Docker-Host 10.10.6.10 (neben Spoolman).
+services:
+  cc2-spoolman-bridge:
+    image: ${BRIDGE_IMAGE:-git.menzel.center/menzeljonas/cc2-spoolman-bridge:latest}
+    container_name: cc2-spoolman-bridge
+    restart: unless-stopped
+    env_file: .env
+    ports:
+      - "5066:5066"
+    volumes:
+      - ./data:/data