Denial is not absence — detection learns the unverifiable answer 06 ruled for it

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

Kanban/UI/Board/BoardInfoPopover.swift

@@ -340,7 +340,7 @@ struct BoardInfoView: View {
         .frame(width: StyleEditorLayout.popover(bodyPointSize: CardWindowMetrics.bodyPointSize).width)
     }
 
-    /// The popover's closing section, whichever of the five postures this board is in — see
+    /// The popover's closing section, whichever of the six postures this board is in — see
     /// `BoardGitSection`.
     @ViewBuilder
     private var gitSection: some View {
@@ -372,6 +372,14 @@ struct BoardInfoView: View {
             }
             .padding(inset)
 
+        case .unverifiable:
+            Divider()
+            VStack(alignment: .leading, spacing: 6) {
+                sectionHeader("Git")
+                BoardGitUnverifiableNote()
+            }
+            .padding(inset)
+
         case .branch:
             Divider()
             VStack(alignment: .leading, spacing: 6) {
@@ -505,6 +513,8 @@ private struct BoardRenameField: View {
 /// mode, one to one — and the mode-`none` and repo-nested pair is where the design is most
 /// insistent: a repo-nested board gets **prose, not a disabled button**. "The option is absent
 /// because it *can't* apply, and the UI should teach that rather than look broken" (06 ▸ Rules).
+/// `unverifiable` (the git-detection axis) joins as a fourth Pro case, structurally identical to
+/// `repoNested` but worded as its own honest prose — a denial is not a nesting.
 ///
 /// **The 2026-07-31 popover/sheet split thinned two of these cases without removing either.** Setup
 /// left the popover for the board settings sheet, so mode `none` no longer renders an action here at
@@ -531,6 +541,13 @@ enum BoardGitSection: Equatable, CaseIterable {
     /// since nothing setup-shaped can apply (`BoardSettingsAvailability`).
     case repoNested
 
+    /// Pro, unverifiable: **not** `.repoNested` — a denied ancestor check, not a found repository
+    /// (06 ▸ Rules ▸ Detection, "Denial is not absence"). Structurally identical to `.repoNested`
+    /// (no action, no Board Settings… row, `BoardSettingsAvailability` false), but its own case so
+    /// the view renders its own honest prose rather than the nested sentence — "unverifiable" is not
+    /// "nested".
+    case unverifiable
+
     /// Pro, git mode: the branch/source line with the **switch** picker, the abnormal-state
     /// explanation when the surface is held, and the Board Settings… row. The remote half —
     /// tracking, Pull/Push, the status badges — is 07-sync-collab.md's own card and joins this same
@@ -549,6 +566,7 @@ enum BoardGitSection: Equatable, CaseIterable {
             case .none: return .noRepository
             case .git: return .branch
             case .repoNested: return .repoNested
+            case .unverifiable: return .unverifiable
             }
         }
     }
@@ -566,6 +584,20 @@ private struct BoardGitNestedNote: View {
     }
 }
 
+/// **The unverifiable explanation** (06-history-undo.md ▸ Rules ▸ Detection, "Denial is not
+/// absence", ruled 2026-07-31), worded as its own honest sentence rather than borrowing
+/// `BoardGitNestedNote`'s — a denied ancestor check is not a found repository, and telling a user
+/// their board is nested when the truth is "couldn't check" would be a lie dressed as caution.
+private struct BoardGitUnverifiableNote: View {
+
+    var body: some View {
+        Text("Lanework couldn't verify whether this board sits inside a repository, so it isn't offering to add one here.")
+            .font(.caption)
+            .foregroundStyle(.secondary)
+            .fixedSize(horizontal: false, vertical: true)
+    }
+}
+
 /// The contextual git note — **a quiet signpost, not a feature** (12-editions.md ▸ The free tier and
 /// `.git`, settled 2026-07-27, carried through the one-app collapse). The free tier has no git
 /// integration (that is the Pro subscription's), so this is not a grow-in-place slot the way the old