Measured on wip-main 633e7453 by grep and reading: 126 (Windows), 53 (KDE)
and 74 (macOS) static declarations, of which 61/35/36 are configuration and
51/29/28 are written by apply_globals. The document has the per-static
table (type, writers, readers, shared or platform, matching name), the lock
order of the rule lists, the proposed Settings (shared part plus a platform
type parameter, snapshot reads, serialised updates, scoped override), the
statics whose semantics would change (reload merges rather than replaces;
partial updates visible mid-reload; save-and-restore writes; the empty
WORKSPACE_MATCHING_RULES window), the migration order with pure refactor
versus BEHAVIOUR marks and the gate each needs, and section 7 with the
findings from encoding the semantics in the crate (aspect ratio starts at
Widescreen but a load without the key writes Standard).
Verified: nothing run (documentation); counts from grep, line numbers read
at 633e7453.
