The seams unbind — the provider is always native, and the git stack compiles dead

Step 4 of strategy/01-git-excision.md, the entangled one: AppModel's makeHistoryProvider collapses to the native provider (the seam stays injectable per the reversibility posture), the session's git state and its wiring go (wireGitUndo, wireBranchSwitching, the card-session staging threading), BoardStore sheds commitSeam and the identity-history ranker (the loader's nil-safe rung now tops out at birth date — today's no-git behavior), SessionSettleGate keeps the gate and inherits the path utility it borrowed, BoardRegistry drops the persisted operation stamp (decode-safe), and the git banner family leaves BannerCenter with its announcer and accessibility phrases. One missed harvest tie severed (the narrator's root subject is its own now). Nothing outside Kanban/Git/ references the stack — proven by sweep. 2,855 tests green.

Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy

KanbanTests/HistoryProviderTests.swift

@@ -587,7 +587,7 @@ struct BoardSessionHistoryTests {
         defer { tearDown() }
 
         let bound = FakeHistoryProvider()
-        model.makeHistoryProvider = { _, _ in bound }
+        model.makeHistoryProvider = { _ in bound }
 
         let ref = try openBoard(model, at: fixture.root)
         let session = try #require(model.session(for: ref))
@@ -605,14 +605,13 @@ struct BoardSessionHistoryTests {
         defer { tearDown() }
 
         // 12-editions.md ▸ The entitlement: the tier is read at composition, once, and recorded.
-        // **PIVOT 2026-08-07**: it is no longer *handed* anywhere. This test used to pin the argument
-        // arriving at `makeHistoryProvider` (`{ _, tier, _ in }`); the parameter is gone, so what is
-        // pinned now is the pair of facts that replaced it — the seam takes a store and a git state
-        // and nothing else, and the session still carries the tier for the base/Pro split yet to be
-        // ruled. The substrate matrix itself is `GitUndoBindingTests`'.
+        // **PIVOT 2026-08-07**: it is no longer *handed* anywhere, and the 2026-08-08 excision took
+        // the last argument beside it — the seam takes a store and nothing else. What is pinned here
+        // is what replaced the old matrix: one call per board, and a session still carrying the tier
+        // for the base/Pro split yet to be ruled.
         var seen = 0
         model.currentTier = { .pro }
-        model.makeHistoryProvider = { _, _ in
+        model.makeHistoryProvider = { _ in
             seen += 1
             return NativeHistoryProvider()
         }