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A terminal panel beside an agent chat

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A real shell on the chat's own connection, opened and closed like the
inspector and never beside it. The modes govern the model; what a person
types is theirs, since they hold the credential and could open the same
shell with an ssh client. The model cannot see the panel -- a button
copies the output you choose into the composer.

The session outlives the socket: closing the panel leaves a build
running, and coming back reattaches with the scrollback. Two tabs share
one shell and the smaller window decides the size. It ends on an idle
timeout, on deleting the chat, on disabling, moving or deleting the
connection, and on a restart -- which says why rather than quietly
opening a fresh shell that has lost the working directory.

The nginx template's `Connection ""` is right for SSE and fails every
WebSocket handshake, so `location /` now uses a `map $http_upgrade`;
update.sh grows a drift check for it, because the only symptom on a
stale vhost is a panel that cannot connect.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jaroslav Beneš
2026-08-02 01:44:07 +02:00
parent 246be1fa8e
commit 5117168454
39 changed files with 2981 additions and 34 deletions
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src/lembas/web/templates/chat/index.html
+30 -2
View File
@@ -5,6 +5,9 @@
{% block head %}
<link rel="stylesheet" href="{{ url_for('static', path='css/chat.css') }}">
{% if terminal_enabled %}
<link rel="stylesheet" href="{{ url_for('static', path='vendor/xterm.css') }}">
{% endif %}
{% endblock %}
{% block body_attrs %} data-authenticated="true"{% endblock %}
@@ -98,9 +101,20 @@
</button>
{% endif %}
{% if terminal_enabled %}
{# To the left of the inspector, and never open beside it: see the
toggle group in app.js. #}
<button class="btn btn--icon" type="button" aria-label="Terminal"
title="Open a shell on {{ agent_profile.name if agent_profile else 'this connection' }}"
aria-expanded="false" data-toggle="#terminal" data-toggle-group="side">
{{ icon("terminal") }}
</button>
{% endif %}
{% if chat and user.is_admin %}
<button class="btn btn--icon" type="button" aria-label="Inspect this chat"
title="Inspect this chat" aria-expanded="false" data-toggle="#inspector">
title="Inspect this chat" aria-expanded="false" data-toggle="#inspector"
data-toggle-group="side">
{{ icon("search") }}
</button>
{% endif %}
@@ -253,9 +267,23 @@
{% endif %}
</main>
{# A third child of .shell, mirroring the sidebar opposite it. #}
{# Third and fourth children of .shell, mirroring the sidebar opposite. The
terminal comes first so it sits to the left of the inspector. #}
{% if terminal_enabled %}
{% include "chat/_terminal.html" %}
{% endif %}
{% if chat and user.is_admin %}
{% include "chat/_inspector.html" %}
{% endif %}
</div>
{% endblock %}
{% block scripts %}
{% if terminal_enabled %}
{# Only where it can be used. xterm is nearly three times everything else
vendored, so a plain chat must never load it. #}
<script src="{{ url_for('static', path='vendor/xterm.js') }}" defer></script>
<script src="{{ url_for('static', path='vendor/xterm-addon-fit.js') }}" defer></script>
<script src="{{ url_for('static', path='js/terminal.js') }}" defer></script>
{% endif %}
{% endblock %}