Contrast navigation ownership with pinned Zulip sources

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a0cffe-206f-7323-89d3-b20ca4cf4bf9

research/evolution/ledger.json

@@ -450,6 +450,45 @@
         "cost_usd": null
       },
       "supersedes": []
+    },
+    {
+      "id": "LEARN-0014",
+      "date": "2026-09-27",
+      "recording": "prospective",
+      "stream": "B",
+      "comparison_group": "B-independent-navigation-source-v1",
+      "protocol_ref": "research/evolution/cycles/2026-09-27-zulip-navigation.md",
+      "question": "Where does independently developed Zulip scope navigation/search result and focus applicability, and where does our model fail to establish a guarantee?",
+      "previous_belief": "The authored navigation generation guard protected current-view and focus effects, but independent application recurrence and alternative ownership/cache policies were unverified.",
+      "conclusion": "Revise guidance toward per-effect applicability: pinned Zulip preserves noncurrent cache data while guarding main selected-view continuations by list identity. Make client-fragment addressability explicit without inferring no-script enhancement. Shared feedback, auxiliary callbacks and deferred focus limit the inference.",
+      "disposition": "revision",
+      "affected_patterns": [
+        "CAND-0009",
+        "CAND-0010",
+        "CAND-0016"
+      ],
+      "evidence": [
+        "research/reviews/ZulipNavigationSourceStudy.md",
+        "research/reviews/ZulipNavigationSources.json",
+        "research/evolution/cycles/2026-09-27-zulip-navigation-effort.json"
+      ],
+      "remaining_uncertainty": [
+        "Static targeted ranges in twelve files, no Zulip runtime/upstream test execution or independent human/AT review.",
+        "Auxiliary lookup/anchor continuations, deferred focus and callback wiring need a bounded follow-up before any race claim.",
+        "One Zulip family supplies partial mechanisms, not full-contract recurrence or a no-script guarantee."
+      ],
+      "reviewer": {
+        "name": "Codex",
+        "role": "author-model",
+        "independent_human": false
+      },
+      "effort": {
+        "research_minutes": 6.345,
+        "execution_minutes": 0.289,
+        "reported_tokens": null,
+        "cost_usd": null
+      },
+      "supersedes": []
     }
   ]
 }