parseArgs now reads flags from two lookup tables, one for flags that take a
value in either form and one for standalone switches, instead of thirty-odd
if blocks. The ECC Tools evidence and gap text live in ordered tier tables
keyed by roadmap markers, with the shared marker lists named once.
buildRequirements reads its docs and readiness checks up front, then
assembles the list from four requirement groups. The PR and issue budget
rows share one builder.
Flag errors, requirement order, and every message string are unchanged.
Verified by comparing parseArgs over a flag matrix and buildReport over the
repo, an empty root, and one synthetic roadmap per marker. Clears the four
complexity warnings on this file.
