Preserve source knurl maximum diameter in manufacturing output

[pzfreo]

Fixes #2175.

Change

• Preserve the STEP-stated maximum diameter in the knurl manufacturing row and its linked diameter leader, even when the recognized solid differs slightly within the accepted source/owner tolerance or an authored display policy asks for fewer decimals.
• Make independent lint compare the finished row and linked diameter ink with the source maximum. It rejects a lost maximum, a conflicting number, or a missing linked diameter.
• Route the source owners to their public regression tests in PR CI.

Evidence

• Public GRM-03 build_drawing(path, pmi="annotate") prints ø10 MAX AFTER KNURL in MFG 3 and ø10 SEE MFG 3 on the linked leader, without non-info manufacturing lint.
• A source maximum of 10.05 with either a 10.05 or a valid 10.043 solid owner prints ø10.05 in both places. A named public-path guard mutates the leader to ø10.04, deletes its diameter, and removes the row maximum while mutating the row formatter; each mutation must produce manufacturing_reference_unresolved.
• 162 focused tests passed; scripts/pr-check --static passed on the final head.
• Fresh independent Google-style review found and reproduced two numeric-consistency gaps and a missing-diameter bypass. All were fixed; the reviewer cleared exact final head bfb21a3c against main 30ee9c11 with no remaining actionable issue.

Architecture

The source maximum enters the ADR 1 model waist, flows through the ADR 4 compiled plan, and is checked on finished annotations by ADR 5 lint. The ADR 3 STEP evidence and ADR 2 placement policy remain at their existing boundaries. No ADR text or invariant changes.

Required CI on the exact final PR head is the merge gate.