v0.4.0: true polygon outlines for irregular plate parts - #8
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Add steel-cutlist, a deterministic 1D bar-nesting engine for long products (beams, HSS, angles, pipe) that packs required member lengths onto purchasable mill lengths with explicit kerf and end-trim allowances. - Strategy portfolio per designation+grade group: mixed-stock greedy plus each single-stock-length restriction, ranked by unplaced count, total stock length, known cost, then bar count. - Independent post-placement verification (overcommitment, material mismatch, duplicate or missing instances) gates publication. - Weights resolve from explicit plf or the bundled AISC database; unknown weights surface as warnings, never silent zeros. - Publishes manifested runs: bar diagrams, purchase summary, drop candidates, rfq_linear.json handoff, and a cutting_list.csv emitted only for verified fully placed runs. - Register cutlist_partial/cutlist_verified package statuses and add a versioned cutlist-result schema. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
Wire the steel-cutlist engine into the review-gated estimate pipeline and carry its results into the draft RFQ workbook. - Member items (designation + length, no plate geometry) now optimize onto configurable mill lengths (--mill-lengths-ft, default 40,50,60) with cut-list kerf, end-trim, and drop-threshold settings. - Cut-list validation errors, verifier findings, and unplaced members gate the pipeline exactly like nest blockers; a member longer than every mill length blocks the run as cutlist_partial. - Ready runs publish cutlist-result.json, rfq-linear.json, a verified cutting_list.csv, and reference bar diagrams alongside the nest artifacts. - The RFQ compiler accepts a validated linear handoff (--linear on the standalone CLI) and renders a LINEAR STOCK / CUT-LIST REFERENCE section, with staleness checks against the estimate identity. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
- Add CHANGELOG.md with dated release history from the git record. - README: cut-list section, skill table row, workflow diagram, prompts. - steel-estimate and steel-rfq SKILL.md document the cut-list stage and the --linear handoff; steel-nest description defers long products to steel-cutlist to keep trigger boundaries unambiguous. - Bump package and runtime versions to 0.3.0 and ship CHANGELOG.md in the npm package. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
- A negative member quantity now records its finding and publishes a structured blocked run instead of crashing instance expansion. - Members without a grade are excluded from pipeline cut-list optimization with an explicit warning, restoring the pre-cutlist review_required outcome instead of hard-blocking the estimate. - Blocked runs report verification.status 'not_run' rather than claiming a verification that never executed; schema updated. - rfq_linear rows carry their own stock group's utilization instead of the job-wide blend. - --mill-lengths-ft rejects non-finite entries as a usage error and no longer double-wraps its own failure message. - Display formatting is decimal-exact, so cutting_list.csv preserves sixteenth-inch lengths instead of rounding at six significant digits. - Deduplicate is_sha256, missing_optional_modules, and normalize_designation into the shared pi_steel package; nest, takeoff, and cutlist now share one copy. - Hoist the placed-instance set out of the per-unplaced-row loop. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
Extend the estimate-package contract with stock_form 'linear' entries so vendor lengths and on-hand sticks flow into cut-list optimization. - Schema: additive linearStock variant (designation, grade, length_ft, quantity, optional unlimited for purchasable supply, and the same hash-bound reviewer_confirmation as plate stock). - Validation: unlimited on-hand linear stock is a blocker; new eligible_on_hand_linear_stock and linear_purchasable_stock helpers mirror the plate gating. - Engine: stock entries carry stock_kind; on-hand stock must be finite and carries no cost basis, reports as cost_basis 'on_hand', and never degrades cost-known status. The portfolio now ranks by purchased length first (on-hand consumption is free), then known cost, purchased bars, and total length, so confirmed sticks eliminate purchases whenever they genuinely can. - Pipeline: declared purchasable linear lengths replace the default mill lengths for their designation+grade group; confirmed on-hand sticks join as finite inventory; plate nesting skips linear entries. - Purchase summaries, rfq_linear rows, bar reports, and the text report label on_hand rows explicitly. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
The full-render smoke caught two problems with the cut-list additions: - cutting_list.csv was published with geometry_verified readiness even when the overall run was review_required (e.g. irregular plate geometry), breaking the invariant that non-ready runs carry no verified-authority artifacts. The verified cutting list now requires the whole run to be ready, mirroring burn-DXF suppression, with a base-tier regression assertion. - The workbook PDF page-count assertions assumed one total page, but the linear reference section grows the sheet and pagination varies by LibreOffice version (24.2 renders one page where CI renders two). The smoke test now asserts the actual contract: uniform page width (one page wide), all words within their own page bounds, document-order section ordering across pages, page-1 logo bounds, and a sanity cap on total pages. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
- Reject non-boolean 'unlimited' values with an invalid_unlimited_flag finding instead of coercing truthy strings into unlimited supply, which could understate purchase requirements. - Include stock_kind in generated stock identities so anonymous on-hand and purchasable rows of the same designation, grade, and length no longer collide as duplicates. - README: list channels and tube among supported cut-list member types, matching the changelog. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
- Small designation+grade groups (up to 12 pieces) now run a deterministic branch-and-bound search over complete bar assignments, seeded and pruned by the portfolio rank with a fixed node budget; it only ever replaces the greedy plan with a strictly better one. On the classic best-fit-decreasing failure (5,5,4,4,3,3,3,3 onto capacity 10) it finds the 3-bar optimum where the greedy needs 4. - The ranking objective is now economically honest: when every stock entry in a group carries a known cost basis, lowest purchase cost decides before purchased length (buying cheaper beats buying shorter); unpriced groups keep the least-purchased-length objective. Without prices, the exact search finds a 230 ft plan on the reference case where the greedy bought 240 ft. - output-contract.md documents cutlist artifacts and cutlist_partial; the estimate-package example gains member items and vendor linear stock; version 0.3.1. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
The branch-and-bound now branches over leaving each piece unplaced (stock_exhausted) in addition to every placement, so when finite stock cannot hold everything it finds the partial plan stranding the fewest members instead of falling back to the greedy's weaker cut. Pruning compares (unplaced, primary objective) lexicographically — both grow monotonically along a path — and the never-worse guarantee is unchanged. Adds docstrings to the search internals and a regression test where the greedy strands three pieces but the optimum strands two. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
Two capacity-10 bars with pieces 8,6,4,4,4: the exact search strands only the 8 where the greedy stranded two 4s. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
Irregular plate parts may now carry geometry.outline — a simple-polygon vertex list in the part's local frame whose bounding box matches the declared size. - Exact shoelace areas and weights replace hand-declared estimates, reported as the new outline_exact approximation status. - Holes are verified against the true profile: a hole inside the bounding box but in a notch now blocks instead of passing. - Layouts and reference DXFs draw the real outline (with the bounding box dotted for context); placement stays by bounding box and burn-DXF suppression for irregular parts is unchanged. - Outline validation (>=3 finite vertices, non-crossing edges, positive area, bbox spanning 0..width x 0..height, declared-area consistency) runs in both the canonical validator and the direct nesting engine; polygon helpers live in the shared geometry module. - Schemas: estimate-package geometry.outline, nest-result placement outline and outline_exact enum. Version 0.4.0. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
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📝 WalkthroughWalkthroughThe change adds optional polygon outlines for irregular parts. It validates polygon and hole geometry, calculates exact areas, propagates outlines through nesting, renders true profiles, updates schemas and documentation, and adds pipeline tests. ChangesPolygon outline support
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to The change adds true polygon outlines, but the current implementation can accept malformed placement geometry, reject distinct irregular parts as duplicate inputs, and generate incorrect areas or drawings for certain self-touching profiles. The PR is not merge-ready until these bounded correctness issues are addressed. Sequence Diagram(s)sequenceDiagram
participant Package as Estimate package
participant Validator as Geometry validator
participant Nest as steel-nest
participant Output as Layout and DXF output
Package->>Validator: Provide geometry.outline
Validator->>Validator: Validate polygon and holes
Validator->>Nest: Pass valid outline and exact area
Nest->>Nest: Rotate outline and attach it to Placement
Nest->>Output: Send placed outline
Output->>Output: Render polygon profile
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Inline comments:
In `@skills/_shared/pi_steel/geometry_verify.py`:
- Around line 71-99: Update _segments_properly_intersect and polygon_is_simple
so every non-adjacent edge intersection is rejected, including endpoint contact,
collinear overlap, and containment, rather than only proper crossings. Also
reject repeated vertices and zero-length edges, while preserving valid adjacent
ring closure handling; add a regression test covering the provided
reused-boundary outline before exact-area and reference-DXF processing.
In `@skills/_shared/pi_steel/parsing.py`:
- Around line 170-171: Update the fallback source identity construction in the
parsing flow to include a canonicalized outline value when present, alongside
the existing name, dimensions, shape, and area fields. Ensure different
irregular profiles produce distinct source_id values while retaining stable
identity generation for parts without an outline.
In `@skills/_shared/schemas/nest-result.schema.json`:
- Around line 282-290: Update the outline schema to allow only an empty array or
arrays containing at least three coordinate pairs, while preserving the existing
two-number coordinate-pair constraints. Use the outline items definition to
enforce the nonempty minimum and ensure the nesting producer’s empty-array
result remains valid.
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CHANGELOG.mdREADME.mdpackage.jsonpyproject.tomlskills/_shared/pi_steel/geometry_verify.pyskills/_shared/pi_steel/parsing.pyskills/_shared/pi_steel/validation.pyskills/_shared/schemas/estimate-package.schema.jsonskills/_shared/schemas/nest-result.schema.jsonskills/steel-estimate/scripts/build-estimate-package.pyskills/steel-nest/SKILL.mdskills/steel-nest/scripts/nest.pytests/test_outline_geometry.py
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Address review findings on the outline feature: - polygon_is_simple now rejects repeated vertices and ANY contact between non-adjacent edges (endpoint touches and collinear overlaps included, not just proper crossings), so reused-boundary and pinched rings can no longer claim exact areas or reach reference DXFs. - Fallback source identities include the outline when one is present, so two legacy parts sharing a name and bounding box but different profiles no longer collide as duplicates; identities for parts without outlines stay byte-stable. - The nest-result placement outline schema now permits only an empty list or three-plus vertex pairs, matching what the engine emits. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
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Aug 23, 2026
Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
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Summary
Irregular plate parts (gussets, brackets, notched profiles) previously required a hand-declared area and rendered as hatched bounding boxes. They can now carry a true polygon outline — a deterministic stepping stone toward true-shape nesting.
What outlines give you
geometry.outlinevertex list (part-local frame, simple polygon, bounding box spanning0..width × 0..height) yields the exact shoelace area, reported as the newoutline_exactapproximation status — no more hand-computedareavalues (declared areas are still accepted, and cross-checked against the outline when both are present).What deliberately did not change
review_required.validation.py) and in the direct nesting engine, with shared polygon helpers inpi_steel.geometry_verify(simple-polygon check, ray-casting containment, point-segment distance).Contract changes (additive)
estimate-packageschema:geometry.outline.nest-resultschema: placementoutlineand theoutline_exactapproximation enum value.Test plan
npm run release:check.test_outline_geometry.py(9 tests): polygon helpers on L-shape/bowtie cases, exact-area weights, notch-hole blocking, self-intersection/bbox-mismatch/area-mismatch/outline-on-rect rejection, DXF+PNG rendering of true outlines, canonical validator acceptance and rejection paths, and pipeline passthrough.🤖 Generated with Claude Code
https://claude.ai/code/session_01MquyTzVAPKpV1V8Vt3XxnJ
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