Fix: Restore views properly, model selection for commit and pr and speed up some cli models with session resume (#801)

* Changes from fix/restoring-view

* feat: Add resume query safety checks and optimize store selectors

* feat: Improve session management and model normalization

* refactor: Extract prompt building logic and handle file path parsing for renames

libs/types/src/settings.ts

@@ -788,6 +788,8 @@ export interface PhaseModelConfig {
   // Quick tasks - commit messages
   /** Model for generating git commit messages from diffs */
   commitMessageModel: PhaseModelEntry;
+  /** Model for generating pull request descriptions from branch diffs */
+  prDescriptionModel: PhaseModelEntry;
 }
 
 /** Keys of PhaseModelConfig for type-safe access */
@@ -1189,6 +1191,8 @@ export interface GlobalSettings {
   // Session Tracking
   /** Maps project path -> last selected session ID in that project */
   lastSelectedSessionByProject: Record<string, string>;
+  /** Maps session ID -> persisted model selection for that session */
+  agentModelBySession?: Record<string, PhaseModelEntry>;
 
   // Worktree Selection Tracking
   /** Maps project path -> last selected worktree (path + branch) for restoring on PWA reload */
@@ -1567,6 +1571,8 @@ export const DEFAULT_PHASE_MODELS: PhaseModelConfig = {
 
   // Commit messages - use fast model for speed
   commitMessageModel: { model: 'claude-haiku' },
+  // PR descriptions - use balanced model for better quality descriptions
+  prDescriptionModel: { model: 'claude-sonnet' },
 };
 
 /** Current version of the global settings schema */