M5a: hole standards library — counterbore/countersink + ISO/ANSI table

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Extend CadFeatureType::Hole (no new enum value) with a style flag
(simple/counterbore/countersink) and the matching geometry: a coaxial
shallow cylinder cut for counterbores, a cone-frustum cut for countersinks.
A file-local hole_std_lookup() resolves screw designations (ISO 273/4762/
10642 metric M3–M10 + common ANSI unified) into clearance/cbore/csink dims;
add_hole_standard() fills the feature from it, add_hole_styled() takes them
explicitly. Six serialized fields appended to both symmetric cereal lists
(recipe version stays 2, golden fixture regenerated 28161->29525). MCP:
hole_styled, hole_standard. 4 new [CadDocument][hole] tests; suite 83/1351.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BVzKmX6Y1aEteit1HTXG4Q

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This commit is contained in:

Tommaso Bianchi

2026-07-25 03:52:01 +02:00

co-authored by Claude Opus 4.8

parent e19e51b150

commit 0bbf22ceae

5 changed files with 319 additions and 2 deletions

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