In LPH 2/3 there are no circuits yet, but the office needs a power
balance by DIN 276 cost group, as in the Excel template "Leistungsbilanz -
KG400": each trade enters consumers by piece or by area (W/m²) with GLF
and cos phi; the balance sums AV and SV per cost group, adds a reserve and
derives the maximum current.
The module is separate from the circuit structure: own tables
(migration 0010), own folder src/estimate-balance and an import-free
shared calculation used by API and UI. Writes go through project commands
(estimate-balance.insert/.update/.delete with complete documents), so
revision checks and Undo/Redo apply; it is not part of project snapshots
or transfer yet. A comparison endpoint sums the device rows of all circuit
lists by cost group (longest prefix) against the estimate.
The UI adds a sidebar entry, a list of Stände (template KG 400, empty or
copy) and a spreadsheet-like editor with autosave, AMEV picker for the
GLF, totals, reserve, maximum current, comparison table and print layout.
The tests reproduce the template example exactly (143.24 kW, 148.48 kVA,
157.56 kW / 163.33 kVA with 10 % reserve, 235.75 A). See
docs/estimate-balance.md and issue #7.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Projects with several buildings could not be structured: floors and rooms
hung directly off the project. Floors can now belong to a building
(migration 0009: table buildings, nullable floors.building_id). Rooms and
distribution boards keep their floor; their building follows from it.
Existing floors stay without a building.
Buildings use the location-structure command store with
project-building.insert/.update/.delete, inverses and persistent Undo/Redo;
deleting a building with assigned floors is rejected. Floor commands carry
buildingId since command version 2. Version 1 floor commands from existing
history predate buildings and are upgraded with buildingId = null before
they are executed and persisted, so forward and inverse keep one version.
Project snapshot schema 7 stores buildings and floor.buildingId; versions
1-6 are upgraded without buildings. Restore and portable transfer include
buildings, and the transfer remaps building ids.
Buildings, floors and rooms move from the project overview to their own
page /projects/:id/struktur with three columns (Gebäude -> Etagen -> Räume)
that filter each other, and a sidebar entry. Floor selects in the board and
room dialogs are grouped by building. Unchanged dialogs close without a
command. Details in docs/building-structure.md; see issue #6.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Per-circuit cross-section recommendation as a separate module attached to
the circuit list. It never writes project data itself: "Übernehmen" applies
cable type, cross-section and length through the regular circuit.update
command, so revisions and Undo/Redo stay intact.
- Pure domain module (src/cable-sizing) with IEC 60364-5-52:2009 Annex B
tables for PVC and XLPE, copper and aluminium, methods A1, A2, B1, B2, C,
D1, D2 and E. Every value was cross-checked against public reproductions;
where sources differ the lower value is used (docs/cable-sizing-module.md).
- Temperature and grouping between table values round to the safer value;
values outside the tables return no result instead of a factor of 1.
Ground methods use B.52.18 (D2) and B.52.19 A (D1).
- Overload protection: circuit-breakers In <= Iz; gG fuses additionally
I2 <= 1.45 Iz with I2 = 1.6/1.9/2.1 In.
- Inputs prefilled from the circuit: power, phase (group or device rows),
project voltage, power-weighted cos phi, length and protective device.
- Opened from a "Leitungsberechnung" button in the row actions, not from a
grid cell, so cable cells keep the spreadsheet behavior.
- Stateless API under /api/cable-sizing; no database table or migration.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Project settings gain siteAddress, workStage, projectLead and
projectEditor (project.update-settings schema version 3, migration 0009);
versions 2 and 1 stay executable and keep the current cover values.
Snapshot schema 6 carries the fields; older versions upgrade with null.
- Global office profile (office name/address) next to the document logo:
table document_branding_settings, PUT /api/document-branding/office,
editable from the print view toolbar.
- Cover page reads all fields; empty values show the "[ergänzen]" marker.
The Planstände editor column shows the project editor.
- Shared logo constants moved to a dependency-free module so the Next.js
bundler can import them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Seitenansicht (/projects/:projectId/print): tabular cover page, board
overview with supply structure and power sums, one plan per board with a
repeating title block; PDF via the browser print dialog with named @page
rules (A4 portrait cover, A4/A3 landscape plans, page x of y).
- Distribution-board info card (board number, location, fed-from, remark)
in the board edit dialog, persisted through the additively extended
distribution-board.update command (migration 0008, snapshot schema 6,
legacy subtree commands normalized).
- Global document logo upload (PNG/JPEG/SVG, max 2 MB) outside project
revisions and snapshots.
- fed-from stays free text; the overview hierarchy and cumulated sums are
preliminary until the feed link is modeled.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Full-codebase review turned up five real correctness/security bugs and
a dozen smaller inconsistencies; all are fixed here with matching test
coverage:
- BMK uniqueness silently allowed German-umlaut duplicates ("Ä1" vs
"ä1") because the DB's normalized index only folds ASCII case. Added
a shared Unicode-aware pre-check used by every circuit/component
insert and rename path (one of which had no pre-check at all).
- CircuitDeviceRow.simultaneityFactor had no upper bound at the row
level (command model and snapshot/restore schema), unlike every
sibling entity, letting a bad value silently corrupt power totals.
- Grid cell editing silently misread German thousands-separator input
("1.500" parsed as 1.5); "." is now rejected outright with a clear
message instead of guessing.
- The editor's shared command runner (runCommand/applyHistory) had no
re-entrancy guard, so a double click/drop could fire the same
command twice and race a BMK collision or revision conflict. Added a
synchronous ref guard plus isSaving on the buttons that lacked it.
- GET .../next-identifier leaked circuit-numbering state for sections
in other projects (no ownership check, 400 instead of 404). Moved
under /projects/:projectId and scoped it.
Also: added the missing circuits.section_id / circuit_device_rows.
circuit_id indexes (migration 0006), gave FormModal a focus trap /
Escape-to-close / focus restore and rebuilt ProjectSettingsModal on
top of it instead of duplicated markup, removed dead code (3 orphaned
domain model files, an unused persistence helper, a wrapper only used
by its own test), pointed the project page at GET /projects/:id
instead of listing+filtering client-side, closed the gap between the
documented 18 MB CSV limit and the ~17.17 MiB actually enforced, added
missing upper bounds on several free-text fields, filled in nine
missing German labels in the revision timeline, replaced a
key-order-fragile JSON.stringify equality check with a real field
comparison, made an implicit sort-order assumption in three
renumbering helpers explicit, cleared the sidebar's target selection
when it no longer resolves after a tree reload, and fixed
updateGlobalDevice to check-then-write instead of write-then-check.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
