chore: remove image generation, Open WebUI, Lazytainer and neo4j

Drops the comfyui, downloader-comfyui, open-webui, lazytainer and neo4j
services with their volumes, env keys and update.sh steps, plus
scripts/switch-model.sh and the two image-generation research docs.

Refs #55 (removal inventory #58, intent vs. source #63)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/switch-model.sh

@@ -1,50 +0,0 @@
-#!/usr/bin/env bash
-# Swap GPU residency between llama-server (Qwen) and comfyui — they never
-# run concurrently, VRAM doesn't fit both (see issue #38's map). Manual
-# invocation only, no auto-switching.
-#
-# Bypasses lazytainer entirely and drives docker compose directly — its
-# idle-stop can't be used for this. Root cause (see
-# docs/research/lazytainer-omniroute-idle-stop.md, issue #40): lazytainer's
-# packet-threshold detector is source-blind and can't tell OmniRoute's
-# periodic health-check pings apart from real traffic on the same port, so
-# it never reliably sleeps a service on its own. A scripted swap always
-# knows which service should go up/down, so it doesn't need that heuristic.
-#
-# OmniRoute may show the just-stopped provider as errored/offline in its
-# dashboard for up to CREDENTIAL_HEALTH_CHECK_INTERVAL (default 5 min) after
-# a swap — cosmetic, not a functional problem (see the research doc above).
-set -euo pipefail
-cd "$(dirname "$0")/.."
-
-usage() {
-  echo "Usage: $0 {qwen|comfyui}" >&2
-  echo "  qwen    - stop comfyui, start llama-server" >&2
-  echo "  comfyui - stop llama-server, start comfyui" >&2
-  exit 1
-}
-
-[ $# -eq 1 ] || usage
-
-case "$1" in
-  qwen)
-    from=comfyui
-    to=llama-server
-    ;;
-  comfyui)
-    from=llama-server
-    to=comfyui
-    ;;
-  *)
-    usage
-    ;;
-esac
-
-echo "==> stopping $from"
-docker compose stop "$from"
-
-echo "==> starting $to"
-docker compose up -d "$to"
-
-echo "==> status"
-docker compose ps

scripts/update.sh

@@ -183,7 +183,6 @@ set_if_blank OMNIROUTE_STORAGE_ENCRYPTION_KEY "$(openssl rand -hex 32)"
 set_if_blank OMNIROUTE_MACHINE_ID_SALT "$(openssl rand -hex 16)"
 set_if_blank OMNIROUTE_CLI_SALT "$(openssl rand -hex 16)"
 set_if_blank OMNIROUTE_WS_BRIDGE_SECRET "$(openssl rand -hex 32)"
-set_if_blank NEO4J_PASSWORD "$(openssl rand -hex 16)"
 
 echo "==> resolving SEARXNG_LAN_IP"
 # search.home is a LAN mDNS/local-DNS name — resolvable from this host, just
@@ -227,7 +226,6 @@ docker compose build --pull
 echo "==> ensuring models are downloaded (skips already-present files)"
 docker compose --profile tools run --rm downloader
 docker compose --profile tools run --rm downloader-classifier
-docker compose --profile tools run --rm downloader-comfyui
 
 echo "==> bringing up omniroute"
 docker compose up -d --wait omniroute