forked from jappel/leistungsbilanz-ts
49488f4e1b
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>
146 lines
7 KiB
Markdown
146 lines
7 KiB
Markdown
# Current Product Backlog
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This document records the next agreed product improvements. It describes
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requirements and intended sequencing, not proof of implementation.
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## Circuit List Editor
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- Collect the remaining editor interaction issues before changing additional
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behavior.
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## Distribution Board Components and Protection Groups
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- [x] Implement the agreed protected circuit-group and distribution-board
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component model in phased work packages.
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- [x] Phase A: central protection catalog, validation, defaults and pure grouped
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BMK rules.
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- [x] Phase B1: relational group, component and protection tables with shared
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BMK uniqueness.
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- [x] Phase B2: complete snapshot/transfer schema for the supported project
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state.
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- [x] Phase C1: new-board command with three groups and fixed header
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components.
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- [x] Phase C2a1: persistent insert/delete commands for mutable group
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protection and auxiliary components.
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- [x] Phase C2a2: component update and reorder commands.
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- [x] Phase C2b1: empty-group insert/update/delete commands.
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- [x] Phase C2b2: complete group reorder command.
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- [x] Phase D1a: deterministic collision-aware group-renumber plan.
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- [x] Phase D1b: persistent collision-safe group-renumber command.
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- [x] Phase D2a: deterministic same-category circuit-move plan.
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- [x] Phase D2b: persistent same-category circuit-move command.
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- [x] Phase D3a: complete validated group-subtree snapshot and warning summary.
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- [x] Phase D3b: persistent populated-group delete/restore command.
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- [x] Phase E1: tree read model for components, groups and protection devices.
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- [x] Phase E2a: pure header/group/footer structure projection.
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- [x] Phase E2b: render the structure projection in the editor grid.
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- [x] Phase E3a: create, edit and delete mutable group and footer components.
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- [x] Phase E3b1: create, rename and safely delete empty circuit groups.
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- [x] Phase E3b2a: persistent circuit-protection update command.
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- [x] Phase E3b2b: circuit-protection defaults on insert and editor modal.
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- [x] Phase E4a: persistent same-category group reorder controls.
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- [x] Phase E4b: explicit group renumber, circuit moves and populated-delete warning.
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- [x] Explicit same-category group renumbering updates prefixes and all child BMK atomically.
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- [x] Single-circuit moves between same-category groups with automatic next-free BMK assignment.
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- [x] Populated-group delete warning and explicit subtree deletion.
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- [x] Phase E: editor projection and editing.
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- [x] Phase F: documentation and full GUI verification.
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- [ ] Keep full electrical sizing and cable-dimensioning rules separate until
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the planner supplies the calculation requirements. The optional per-circuit
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cable sizing module (`docs/cable-sizing-module.md`) exists; its tables must
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be confirmed by the planner against DIN VDE 0298-4.
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- Detailed specification:
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`docs/spec/09-distribution-board-components-and-protection-groups.md`
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## First Release Baseline
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The pre-release cleanup established the following compatibility boundary:
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- [x] Pre-baseline databases, portable JSON exports, logical snapshots and
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persisted command histories are explicitly unsupported.
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- [x] Migration `0000` builds the complete supported schema on an empty
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database.
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- [x] The development migration chain and Drizzle metadata were replaced
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before any supported release depended on them.
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- [x] Upgrade-only database, snapshot and command compatibility paths were
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removed.
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- [x] Pre-cleanup development history remains available through Git history.
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- [x] Clean installation, migration, startup and core workflows were verified
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against an empty database.
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- [ ] Mark this compatibility boundary with the first supported release tag.
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- After that release, every published migration is immutable and later schema
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changes must use new additive migrations.
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## Project History
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- [x] Every listed logical snapshot, including automatic snapshots, must be
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explicitly restorable from the project history UI.
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- [x] Show which project change produced a snapshot. Prefer immutable revision
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metadata over storing a second free-form description of the same change.
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- [x] Keep restoration auditable as a new project revision and preserve persistent
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undo/redo.
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## Distribution Boards
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- [x] Assign an optional project floor to a distribution board.
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- [x] Store a supply classification for each distribution board:
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- `AV` (Allgemeine Stromversorgung)
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- `SV` (Sicherheitsstromversorgung)
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- `EV` (Ersatzstromversorgung)
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- `USV` (Unterbrechungsfreie Stromversorgung)
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- `MSR` (Mess-, Steuerungs- und Regelungstechnik)
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- `SiBe` (Sicherheitsbeleuchtung)
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- [x] Let project settings select which catalog supply types are used in a
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project. Distribution-board dialogs offer only that selection; a type in
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use cannot be disabled.
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- [x] Include both fields in project snapshots and portable project
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export/import.
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- [x] Persist changes through project commands so they remain undoable after a
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restart.
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## Device Voltage Derivation
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- [x] Derive voltage from the selected phase type and the project settings:
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- single-phase uses the project's single-phase voltage;
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- three-phase uses the project's three-phase voltage.
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- [x] Voltage is not editable on global devices, project devices or circuits.
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Global devices store only their phase; copying one into a project derives
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the target project's voltage.
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- [x] Project-device voltage follows its phase. Circuit voltage follows the
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section phase; an unassigned circuit is three-phase only when all assigned
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device rows with a valid phase are three-phase.
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- [x] Changing project voltage settings updates all project devices and circuits
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atomically in the same persistent Undo/Redo step.
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- [x] Baseline migration `0000` stores only canonical derived values.
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Pre-baseline imports are intentionally unsupported.
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## Building Classification
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- [x] Store whether a project represents a public building.
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- [x] Edit the value in the project settings and preserve it through persistent
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Undo/Redo, snapshots and portable project transfers.
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- [x] Provide the value as an explicit future sizing input for selecting
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halogen-free cables and lines; automatic sizing remains deferred.
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## Circuit List Power Summary
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- [x] Show the total power of every circuit section.
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- [x] Show the unadjusted total power of the complete distribution board.
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- [x] Store a distribution-board simultaneity factor between zero and one in
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the distribution-board settings.
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- [x] Show the distribution-board total after applying that factor.
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- [x] Preserve the factor in project commands, snapshots and portable project
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transfers.
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- [x] Keep column visibility and order as a project-specific UI preference so
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all distribution boards in the same project open with the same columns.
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## Recommended Sequence
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1. [x] Distribution-board floor and supply fields.
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2. [x] Device voltage derivation without overrides.
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3. [x] Snapshot-to-revision descriptions and history presentation.
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4. [x] Distribution-board power summary and project column layout.
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The Revit/CSV/IFCGUID round-trip follows the distribution-board component
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foundation as a separate jointly planned phase and must not be inferred from
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these tasks.
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