refactor(ai): Inspector AI Assistant Architecture V1

.eslintrc

@@ -66,6 +66,8 @@
         "space-before-blocks": [2, "always"],
         "consistent-this": [1, "that"],
         "linebreak-style": [2, "unix"],
-        "quotes": [2, "single"]
+        "quotes": [2, "single"],
+        "no-var": 1,
+        "prefer-const": 1
     }
 }

.gitignore

@@ -26,4 +26,11 @@ package
 
 # AI
 AGENTS.md
-CLAUDE.md
+CLAUDE.md
+
+# Agent workflow artifacts (PRDs, issues, ADRs, agent docs)
+.scratch/
+docs/adr/
+docs/agents/
+CONTEXT.md
+prompt.md

app/scripts/devtools/panel/ui5/main.js

@@ -456,6 +456,25 @@
         }
     });
 
+    // Tear down the AI session when the panel page is unloaded so the background
+    // service worker disconnects the prompt-api port and destroys the model session.
+    window.addEventListener('beforeunload', function () {
+        aiChat.destroy();
+    });
+
+    // Notify the AI tab when it becomes active so the transcript scrolls to the
+    // latest turn. Deferred via requestAnimationFrame so the scroll runs after the
+    // TabBar click handler has flipped the `selected` attribute and the content is
+    // visible (scrollHeight on a hidden element is meaningless).
+    var aiTabElement = document.getElementById('ai-tab');
+    if (aiTabElement) {
+        aiTabElement.addEventListener('click', function () {
+            window.requestAnimationFrame(function () {
+                aiChat.onTabActivated();
+            });
+        });
+    }
+
     // ================================================================================
     // Communication
     // ================================================================================