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/BoardStoreTests.swift

@@ -803,32 +803,17 @@ struct BoardStoreReloadMemoTests {
         #expect(store.landedReloads == 2)
     }
 
-    @Test("A value-equal reload still lands for the auto-commit seam and the covering gate")
+    @Test("A value-equal reload still lands for the covering gate")
     func aValueEqualReloadStillLands() async throws {
         let fixture = try makeBoard()
         defer { fixture.tearDown() }
         let store = try BoardStore(rootURL: fixture.root)
 
-        let landings = LandingCount()
-        store.commitSeam = HistoryCommitSeam(
-            willWrite: {},
-            writeBracketDidClose: {},
-            reloadDidLand: { _ in landings.value += 1 }
-        )
         _ = await reload(store)
 
-        // The covering gate counts landings, not assignments (`GitAutoCommitter.landedReloads`), and
-        // the commit seam is armed by every landing whether or not the snapshot moved — "a landing
-        // that finds nothing to commit is the silent no-op, not a wasted trip".
-        #expect(landings.value == 1)
+        // The covering gate counts landings, not assignments: a walk covers what it walked whether or
+        // not the tree turned out to differ.
         #expect(store.landedReloads == 1)
         #expect(store.snapshotGeneration == 0)
     }
 }
-
-/// What the reload path told the history seam — a box, because `HistoryCommitSeam` is a struct of
-/// closures and a captured `var` cannot be read back after the reload has landed.
-@MainActor
-private final class LandingCount {
-    var value = 0
-}