feat(pipeline): query editor tab templates
- partials/pipeline_query.html: dark-themed SQL textarea (navy bg, Commit
Mono, 12px border-radius, electric blue focus glow) + schema sidebar
(collapsible per-table column lists with types) + controls bar (Execute,
Clear, limit/timeout note) + Tab-key indent + Cmd/Ctrl+Enter submit
- partials/pipeline_query_results.html: results table with sticky headers,
horizontal scroll, row count + elapsed time metadata, truncation warning,
error display in red monospace card
Subtask 5 of 6
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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