docs: DD-017 Phase 4 — parametric-programs capability/disclosure surface + guide - #420
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…ace + guide Document the shipped RS274NGC programming layer (v0.18.0) for consumers: - New manual guide docs/manual/concept-parametric-programs.md — worked bolt-circle example, what runs, the parametricProgram honesty tiers, the maxProgramIterations/maxCallDepth bounds, and the scope limits. - Compatibility coverage: a construct-by-construct table + the full rs274-* warning-code set in docs/compatibility/gcode-motion-coverage.md. - Added parametricProgram to the capability-model concept page. - Refreshed stale statuses: the #189 epic row (O-word/params gap now closed → phase 7 shipped v0.18.0), the DD index (DD-017 Proposed → Accepted/shipped), and DD-017's own status header + Phase 3/4 decision-log entries. No engine change. Follows docs/USER_FACING_DOCS_STYLE.md. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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DD-017 Phase 4 — capability/disclosure surface + docs
The final DD-017 phase (§5.4): document the RS274NGC programming layer shipped in v0.18.0 so consumers can discover and use it. No engine change — docs only.
New user-facing guide
docs/manual/concept-parametric-programs.md— audience-first (a CNC/LinuxCNC/CAM tool builder): what a parametric program is, a worked bolt-circlewhile-loop example, what runs (parameters / expressions / control flow / subroutines), the "it costs nothing on ordinary files" gate, the honesty model (parametricProgramknown/approximated/unavailable), and themaxProgramIterations/maxCallDepthbounds + scope limits. FollowsUSER_FACING_DOCS_STYLE.md.Compatibility coverage
docs/compatibility/gcode-motion-coverage.mdgains an RS274NGC parametric programs section: a construct-by-construct support table with the exact disclosure code for each failure mode (rs274-uninitialized-param,rs274-bad-expression,rs274-non-finite-value,rs274-iteration-limit,rs274-call-depth,rs274-unknown-sub,rs274-duplicate-sub,rs274-misplaced-control,rs274-unsupported-sysparam), plus the bounds + capability tiers.Capability model + stale-status fixes
parametricProgramto the capability-model concept page with a plain-language honesty note.Links verified (
docs:linksOK, 184), prettier clean. This completes DD-017.🤖 Generated with Claude Code