Open Terminal fleet for all accounts + OpenWebUI UAT pass (#610)

open-terminal 0.11.34 bare-metal (human-authorized host install) with a
systemd template unit: reachableceo on tailscale-only :30000 (cwd
~/projects) and all 8 other accounts on :30001-30008, each with its own
key kept out of ps in per-user TOMLs, all users added to the docker group.
Keys live in ~/.creds + /etc/ukrrs/open-terminal, never in this repo.

UAT: throwaway OpenWebUI v0.11.1 (matched to the human's Cloudron prod)
driven purely over its HTTP API against the beta gateway lane - connection
verify/config PASS, direct exec as uid 1001 PASS, and the chat round trip
PASS: the model emitted run_command, we executed it through OpenWebUI's
terminal proxy (server holds the key), and the final answer named 9/9 real
project directories; earlier negative runs prove the test catches
hallucinated output. Ops note OPEN-TERMINAL.md documents production wiring
(prod openwebui container v0.3.10 is too old and needs an upgrade first).

Also tonight: agent-stack relaunchers removed (6-, backups kept) so no
screen/crush sessions auto-start on reboot; 22:00 night-profile flip
observed live; docs synced for the earlier teardown.

💘 Generated with Crush

Assisted-by: Crush:glm-5.2
[#610]

uat-sse-last.log

@@ -0,0 +1,6 @@
+data: {"choices":[{"delta":{"content":"","reasoning_content":"The user wants me to run a specific command and return only the directory names, one per line. The command is: `ls -1 /home/reachableceo/projects`\n\nLet me run this command and see what it returns.","role":"assistant","tool_calls":[{"index":0,"id":"call_-7296376513589405675","type":"function","function":{"name":"run_command","arguments":"{\"command\":\"ls -1 /home/reachableceo/projects\"}"}}]},"finish_reason":null,"index":0}],"created":1788233502,"id":"20260901113140eae7bb7a7ca94820","model":"glm-4.7","object":"chat.completion.chunk"}
+
+data: {"choices":[{"delta":{},"finish_reason":"tool_calls","index":0}],"created":1788233502,"id":"20260901113140eae7bb7a7ca94820","model":"glm-4.7","object":"chat.completion.chunk","usage":{"prompt_tokens":2487,"completion_tokens":66,"total_tokens":2553}}
+
+data: [DONE]
+