Records Phase 2 PR 8 of the module system: MODULE_SYSTEM.md gains the PR
entry in 2.7 and the built-it notes on 1.4 and 1.5; MODULE_API.md 3.3 is
amended where building it settled something the draft left open or got wrong.
The amendments to 3.3:
- The pipeline arrow had role/feature filtering BEFORE admin overrides. The
code has always been the other way round, deliberately - the filter runs
last so it stays a boundary an override cannot cross (THEMING_AND_NAV 7).
- `feature` was documented as public-area-only. It applies in all three
areas: core's admin and player navs still carry no flags, but a module row
that declares a gate and has it silently ignored is a trap.
- How a provider is found: by the module that registered the row, not by a
prefix parsed out of the flag name. Core's own rows resolve against the
owner id `core`, which core registers useShardFlags under.
- What a provider hook returns, and that every unknown fails OPEN.
- Why calling one hook per provider in a loop is legal, and why the
enumerator is a module export rather than a member of registry.
- Six details the interleave settled: unordered rows append rather than
defaulting to 0; an ungrouped admin row gets its own trailing group rather
than joining core's; a module-created group is a legal override
destination; a colliding `to` is dropped with a warning; and why the
interleave must precede the override merge.
MOD_PATHS' replacement is recorded in both files, including the defect the
derivation fixed: the moderator redirect was a third hardcoded list that
disagreed with MOD_PATHS about /admin/houses. THEMING_AND_NAV 7's
"moderator confinement" note is amended to match.
Code: website PR 8 (client-only; 160 client tests, manifest and OpenAPI
unchanged), verified with the 7.7 browser smoke.
Co-Authored-By: Claude <noreply@anthropic.com>
