Server streams rows from a pg cursor in 10k-row batches, building Arrow
record batches incrementally and piping them as chunked HTTP response —
Node.js heap stays bounded regardless of dataset size.
Client fetches as arrayBuffer() and loads directly into Perspective worker
(native Arrow path, no JSON deserialization). X-Row-Count header drives
a non-blocking banner for datasets >= 500k rows. validCols now derived
from col_meta rather than from row keys.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Re-applies fetchCurrentTotals dimension-only filter (prevents Perspective errors
from split_by/expression columns in the filter), toolbar three-group reorganization
(Layout | Expand | Data with dividers), always-visible Save as…, msg in toolbar,
resizable panel, change log modal with undo and inline note editing.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Expression columns (bucket, computed) are defined in cfg.expressions and
are valid pivot axes, but weren't in validCols (raw table columns), so
they were filtered out of group_by/split_by on every layout restore.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- GET /api/versions/:id/log — log entries with row counts via JOIN
- DELETE /api/log/:logid — undo in a transaction (delete fc rows + log entry)
- PATCH /api/log/:logid — update note text
- History button opens a modal: op badge, slice, editable note, row count, Undo per entry
- Undo triggers full Perspective table reload via initViewer
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Fix perspective-click handler to use event filter triples instead of
__ROW_PATH__ — Perspective encodes row position as [col,'==',val] in
detail.config.filter
- buildWhere now skips unrecognised slice keys (e.g. pf_iter) instead of
throwing, so only dimension columns reach the WHERE clause
- Add draggable resize handle on the operation panel (160–480px)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Baseline.jsx: merge Reference section into Add Segment form with baseline/reference toggle; segment rows now clickable to expand stored WHERE clause + timeline; date filter inputs use type="date" for date-role columns
- Timeline.jsx: add type prop ('baseline'|'reference'); reference band uses purple; single-band height shrinks to 52px; canvas uses requestAnimationFrame to fix offsetWidth=0 on mount
- operations.js: reference route now accepts where_clause like baseline (drops date_from/date_to)
- sql_generator.js: reference SQL template uses {{filter_clause}} instead of hardcoded BETWEEN
Note: existing sources need Generate SQL re-run to pick up the new reference template.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- ui/: React + Vite + Tailwind app (Setup, Baseline, Forecast views, collapsible sidebar, status bar, canvas timeline)
- server.js: serve built UI from public/app/
- package.json: add build script (cd ui && npm run build)
- routes/sources.js: default new col_meta role to 'dimension' instead of 'ignore'
- .gitignore: exclude public/app/ build output
- pf_spec.md: update tech stack, nav, frontend section, and project status to reflect current implementation
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
