fix(ena-planner): persist active template and extend default keep tags

modules/ena-planner/ena-planner.js

@@ -33,12 +33,14 @@ function getDefaultSettings() {
         // Plot extraction
         plotCount: 2,
         // Planner response tags to keep, in source order (empty = keep full response)
-        responseKeepTags: ['plot', 'note'],
+        responseKeepTags: ['plot', 'note', 'plot-log', 'state'],
 
         // Planner prompts (designer)
         promptBlocks: structuredClone(DEFAULT_PROMPT_BLOCKS),
         // Saved prompt templates: { name: promptBlocks[] }
         promptTemplates: structuredClone(BUILTIN_TEMPLATES),
+        // Currently selected prompt template name in UI
+        activePromptTemplate: '',
 
         // Planner API
         api: {