Brandon Higgins b0fe4d8aa6 test(#612): M-NN phase-id collision characterization (PR-0 anchor) ...

The "prove the defect first" artifact the #612 approval requires. Green
current-behavior characterization (zero behavior change) asserting that the
milestone-prefixed grammar collapses a fully-specified 4-tuple token to a bare
integer:

  normalizePhaseName('2-01.02-01') === '02'   (the anchor)
  normalizePhaseName('10-02.03-04') === '10'  (same failure class)

plus the defect boundary (collapse appears only when milestone+phase+subphase+
plan coexist) and the cross-subsystem '02-04' semantic ambiguity (asserted as a
non-collapsing current output, a distinct class from the parse collapse).

Behavioral only, no source-grep. Locks the current known-imperfect behavior as
documentation of the ambiguity; to be superseded when PR-1 lands the bracket
grammar behind phase_id_convention: 'bracket'. Named adr-612-* (maps to no prod
module) so it clears the lint-test-file-count 2-file cap on the phase-id module
and the lint-regression-test-names bug-* ban.

See docs/adr/612-bracket-phase-id-convention.md, Decision 3.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-13 09:02:44 -06:00

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