chore: archive story 10

.living_spec/stories/archive/10_persist_model_selection.md

@@ -0,0 +1,15 @@
+# Story: Persist Model Selection
+
+## User Story
+**As a** User
+**I want** the application to remember which LLM model I selected
+**So that** I don't have to switch from "llama3" to "deepseek" every time I launch the app.
+
+## Acceptance Criteria
+*   [ ] Backend/Frontend: Use `tauri-plugin-store` to save the `selected_model` string.
+*   [ ] Frontend: On mount (after fetching available models), check the store.
+*   [ ] Frontend: If the stored model exists in the available list, select it.
+*   [ ] Frontend: When the user changes the dropdown, update the store.
+
+## Out of Scope
+*   Persisting per-project model settings (global setting is fine for now).