The stack comes out — Kanban/Git/ deleted wholesale, ten thousand lines into history

Step 5 of strategy/01-git-excision.md: the seventeen dead engine files and the five remaining git test suites go (InertGitTests stays — the naming footgun is a Storage keeper). Two rescues ride ahead of the delete: HarvestedReceipt relocates to EchoLedger (the harvest surface outlives its git consumer; foundation for the deferred journal), and commentTimestamps joins the narrator it always served. The provider-swap purge test re-expresses over a git-free fake; the duplicate-id ladder keeps every pure historyRank pin and loses only the two ranker-driven ones. Resurrection point: tag pre-git-excision. 2,707 tests green.

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

Kanban/Changes/ChangeNarrator.swift

@@ -936,6 +936,37 @@ enum ChangeNarrator {
         return components.prefix(depth).joined(separator: "/")
     }
 
+    /// **When each of this window's comments was created**, keyed by `commentFolder(of:)`'s own
+    /// spelling — the chronology a commit's comment bullets sort by (06 ▸ Rules ▸ Auto-commit, blessed
+    /// 2026-07-31: "by the comments' own `created`, folder name on ties").
+    ///
+    /// Relocated 2026-08-08 from `GitAutoCommitter.swift` with the git excision: the flush that called
+    /// this is gone, but the read itself is git-free — one `index.md` per touched comment folder, off
+    /// the working tree — so it stays beside the vocabulary that consumes it
+    /// (`ChangeNarrationRequest.commentTimestamps`) rather than leaving with its old caller.
+    ///
+    /// **Missing is normal, not a defect.** A comment whose folder left the tree in this very window
+    /// (the close purge), one whose `index.md` does not parse, one written by hand with no `created`
+    /// at all — each is simply absent here and sorts after its dated siblings in folder-name order,
+    /// which is `CommentThread.sorted`'s own fallback for the same field. Nothing here is reported —
+    /// a commit message is the wrong place to discover a defect.
+    static func commentTimestamps(for changed: [ChangedPath], boardRoot: URL) -> [String: Date] {
+        var timestamps: [String: Date] = [:]
+        var seen: Set<String> = []
+        for path in changed {
+            guard let folder = commentFolder(of: path.path), seen.insert(folder).inserted else { continue }
+            let index = boardRoot
+                .appendingPathComponent(folder)
+                .appendingPathComponent(IntegrityRules.indexFileName)
+            guard let data = try? Data(contentsOf: index),
+                  let document = try? BoardLoader.parseDocument(data, path: folder),
+                  let created = document.created.value
+            else { continue }
+            timestamps[folder] = created
+        }
+        return timestamps
+    }
+
     /// **The comment verb family** (01-storage-format.md § Enhanced schema, the `kind: comment` block:
     /// "foreign comment changes are described by **path shape** — the 'Update agent guide (vN)'
     /// mechanism: a changed path under `…/comments/<uuid>/` composes 'Comment on ⟨card title⟩' / 'Edit