A functional toolkit for authoring resource-leveling algorithms — compose constraint and scoring blocks, enumerate feasible schedules
docs(readme): ModeSelection is enforced by serialSGS, not annotation-only
The constraint table predated the engine's multi-mode support landing
(preprocess modesByTask + per-mode placement); supports("ModeSelection")
returns true and constraintMeta.test.ts asserts it.
Russ T. Fugal
(Jul 16, 2026, 4:12 PM -0600)
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| `PeakCap` | Sum of fractional units on a resource ≤ cap (optionally windowed) | Yes |
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| `ConcurrentUnitsLimit` | ≤ N units have active work on any day; optional `discipline` scope (WIP) | Yes |
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| `Release` / `Deadline` | Earliest start / latest finish bounds per task | Yes |
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| `ModeSelection` | Multi-mode RCPSP — crew-size × duration trade-off per task | Yes |
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| `Calendars` | Baked into `resolveCalendar` upstream | n/a |
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| `UnitPrecedence` | A unit may not start until other units finish | No (annotation) |
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| `UnimodalProfile` | One-ramp-up-one-ramp-down shape on a resource histogram | No (annotation) |
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| `ModeSelection` | Multi-mode RCPSP — crew-size × duration trade-off per task | No (annotation) |
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| `CrewFlowContinuity` | Keep a crew flowing through a unit sequence without idle gaps | No (annotation) |
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`ConcurrentUnitsLimit` is the hard WIP cap that prioritizes **completion**: cap how many units are open at once so the search finishes started units before opening more. Omit `discipline` for a whole-unit cap; set it to a `resourceUniqueId` for a per-discipline cap ("≤ 2 units in a given phase at once"). It subsumes the former `LaydownSpaceCap`.