Justify auto-attach policy namespaces for the conventions lint

Main's iOS package-conventions lint now flags all-static public types
(both caseless namespace enums and static-only structs) repo-wide.
MobileAutoAttachFlag, MobileAttachRoutePriority, and
MobileAutoAttachTargetSelector are pure, stateless policy namespaces:
deterministic transforms over values passed per call, no I/O and no
injected dependencies, so there is nothing to instantiate. Carry the
sanctioned inline lint:allow justification rather than forcing an
artificial instance type onto pure functions.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: lawrencecchen

Packages/CmuxMobileShellModel/Sources/CmuxMobileShellModel/MobileAttachRoutePriority.swift

@@ -9,6 +9,10 @@ public import CMUXMobileCore
 /// the model package (not privately on the shell) so the pure auto-attach target
 /// selector can rank devices by their best reachable route without importing the
 /// shell.
+///
+/// Pure route-priority transform over values passed per call; the shared source
+/// of truth for route ordering holds no per-instance state, nothing to instantiate.
+// lint:allow namespace-type, namespace-enum — stateless policy namespace, see above.
 public enum MobileAttachRoutePriority {
     /// Whether `left` should be tried before `right`: lower `priority` wins, with
     /// the route `id` as a stable lexicographic tiebreak so the ordering is

Packages/CmuxMobileShellModel/Sources/CmuxMobileShellModel/MobileAutoAttachFlag.swift

@@ -7,6 +7,10 @@ public import Foundation
 /// the macOS beta-feature convention of a `UserDefaults`-backed boolean. The flag
 /// is read once at the composition root and injected into the shell as a plain
 /// `Bool`, so the shell stays testable without touching `UserDefaults`.
+///
+/// Pure flag-resolution policy with no per-instance state; its only dependency
+/// (`UserDefaults`) is passed per call, so there is nothing to instantiate.
+// lint:allow namespace-type, namespace-enum — stateless policy namespace, see above.
 public enum MobileAutoAttachFlag {
     /// The `UserDefaults` key. Present-and-set overrides the build default, so a
     /// dogfood Release build can opt in (or a DEBUG build can opt out) without a

Packages/CmuxMobileShellModel/Sources/CmuxMobileShellModel/MobileAutoAttachTargetSelector.swift

@@ -17,6 +17,10 @@ public import Foundation
 /// the registry is scoped to the signed-in user's team, so a different-account
 /// Mac never appears here, and even a stray route would be rejected at mint by
 /// the Mac's same-Stack-account authorization check.
+///
+/// Pure, deterministic target-selection policy over values passed per call (no
+/// I/O, no injected dependencies, no per-instance state), nothing to instantiate.
+// lint:allow namespace-type, namespace-enum — stateless policy namespace, see above.
 public enum MobileAutoAttachTargetSelector {
     /// A device that is a viable auto-attach target: a controllable host with at
     /// least one instance reachable on a supported route.