Take the read-back back out of the persist; a write verdict belongs only where evidence crosses the plugin boundary

Its false gated six undo points, so an unverified byte-equality assumption could have silently removed Ctrl-Z for a bank mutation that landed.

src/shell/capture/bake_land.cpp

@@ -139,17 +139,16 @@ wire::BakeWriteProof writeBackOne(ScannedKey& entry, bool persisted) {
         std::string value;  // empty = clear the key
         if (entry.write == ScannedKey::Write::Answer) {
             // Where a landing earns the word: the pass's persist runs after the whole scan,
-            // so until here nothing had observed whether the project took it. Without it
-            // the entry lives in memory alone, which is a failed bake to anyone who
-            // reloads — so it is answered as one rather than as an Ok.
+            // so until here no bank write had been issued for it at all. Without one the
+            // entry lives in memory alone, which is a failed bake to anyone who reloads —
+            // so it is answered as one rather than as an Ok.
             const wire::BakeLanding after =
                 wire::bakeLandingAfterPersist(entry.report.landing, persisted);
             if (after == wire::BakeLanding::Unpersisted) {
                 entry.outcome = refuseBake(
                     BakeStatus::Failed,
                     "the bake reached the bank in memory, but this pass's persist did not "
-                    "confirm its bank write, so this answer cannot promise a reload will "
-                    "find it",
+                    "report success, so this answer cannot promise a reload will find it",
                     entry.outcome.generation);
                 // `detail` left empty on purpose: describeLanding's Unpersisted clause is
                 // that sentence's one home on the console side, and the message above is
@@ -196,7 +195,7 @@ void RunResampleBake(ReaSamplerSession& session) {
     std::vector<ScannedKey> scanned;
     wire::BakeScanTally tally;  // every verdict below is counted, skips included
     std::string aborted;        // set only when the scan itself threw
-    bool persisted = false;     // the pass's ONE persist confirmed its bank write
+    bool persisted = false;     // the pass's ONE persist ran and reported success
     bool bookChanged = false;   // some landing added or refreshed an entry
     // A local, not a tally field: an entry counted here can still be re-answered as a
     // failure by the write-back loop below, so this is a persist GATE and never a count