Collapse the edition split — one target, twins merged, verify-editions retired

Phase 1 of the 2026-07-30 one-app pivot (DESIGN 0bec9a6, card c3a3ddd5):
the KanbanPro target, LaneworkPro scheme, KanbanProTests module-alias
bundle, KanbanPro/ source root and scripts/verify-editions.sh retire
wholesale. project.yml reads as a single-target file again (anchors
inlined, header rewritten in tier vocabulary).

The edition twins merge: EditionTypes -> PasteboardTypes (one
UTType(exportedAs:) home — the one app owns the family types),
EditionAbout -> AboutBox (the quiet Pro signpost survives as the About
box's one line; "…in Settings" deferred until the StoreKit phase gives
it somewhere to point). InertGitTests drops its Base prefix — the
inert-.git posture is unconditional app behavior, unsubscribed and
lapsed being one state.

Entitlements gain com.apple.security.network.client, declared now and
dormant until Pro's remotes use it; no keychain access group. The App
Group key deliberately stays — it goes with AppGroup.swift in phase 2,
since pulling it first would silently drop the app into the fallback
container. README/RELEASE.md build-and-pipeline prose updated to the
one-record world; the subscription story lands with phase 3.

1893 tests in 322 suites green.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

Kanban/App/AppModel.swift

@@ -209,11 +209,11 @@ public final class AppModel {
     /// **The composition root for `HistoryProviding`** (12-editions.md ▸ The provider seam): what a
     /// board session's undo stack is built by, called once per board as its session begins.
     ///
-    /// Base binds the native stack — a pair of step stacks over the inverses registered at the
-    /// Writer boundary (13-native-undo.md, `NativeHistoryProvider`) — and that is the default here
-    /// because it is the *shared* code's implementation: both targets compile it, and Pro runs it
-    /// too until pro-m1 replaces this closure with the git provider (06-history-undo.md). Nothing in
-    /// this file is edition-conditional; the edition difference is which closure the root installs.
+    /// The free tier binds the native stack — a pair of step stacks over the inverses registered at
+    /// the Writer boundary (13-native-undo.md, `NativeHistoryProvider`) — and that is the default
+    /// here because it is the substrate every tier can always fall back to; pro-m1 installs the git
+    /// provider over this closure when the subscription is active (06-history-undo.md). Nothing in
+    /// this file is tier-conditional; the tier difference is which closure the root installs.
     ///
     /// It takes the store because that is what a provider is a history *of*: the git provider needs
     /// the board root it is a repository at, and the native one's steps are computed from the same
@@ -239,7 +239,7 @@ public final class AppModel {
         /// (13-native-undo.md ▸ Rules). It lives here for the store's reason exactly: the session is
         /// what every window over this board shares, and "undo is board-local".
         ///
-        /// Which implementation it is, is the edition's answer and nobody else's
+        /// Which implementation it is, is the tier's answer and nobody else's
         /// (12-editions.md ▸ The provider seam) — see `AppModel.makeHistoryProvider`.
         public let history: any HistoryProviding