* fix(#2012): scope Progress-row regex to ## Progress section (was binding to earlier table)
The Progress-row writer used a non-global regex that matched ANY table row
starting with the phase number. When an earlier table (e.g. Requirements
coverage | Phase | Requirements | Count |) preceded ## Progress, the regex
bound to the wrong row (3-column), no-op'd, and never reached the real
Progress row. roadmap_updated stayed true (it's existsSync), masking the
failure.
- src/phase.cts: scope the tableRowPattern regex to the ## Progress section
(indexOf + slice) so it only matches Progress-table rows.
- tests/phase.test.cjs: regression test — ROADMAP with a phase-numbered
Requirements table before ## Progress → Progress row updated, Requirements
row untouched.
Closes#2012
* docs(#2012): backfill changeset pr 2032
