The form renderer is server-driven: zddc-server's form handler injects
schema/ui/data into <script id="form-context"> on every render.
Standalone form/dist/form.html opened from file:// has no context and
just rendered as a blank page below the header chrome — no orientation,
no submit button affordance was hidden, but nothing labelled what the
user was looking at.
Detect the empty-context case in form/js/main.js, render a small
.form-welcome card explaining that this tool is server-driven, and hide
the now-meaningless Submit button. The card uses shared tokens
(--bg, --border, --font-mono, etc.) so it themes correctly.
Note: the unified tables.html bundle that hosts the form via the
zddcMode dispatcher is unaffected — tables always sets zddcMode='form'
or 'table' before form's main.js boots, so the welcome only fires for
the standalone HTML.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ZDDC
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