fix(host): opt in to model titles from web

apps/cli/README.md

@@ -10,7 +10,7 @@ The TUI surface:
 - tells the agent where its own source lives: after boot it adds a prompt section naming this harness checkout, resolved from the launcher's real path so it holds under a PATH symlink and an arbitrary cwd, so the self-referential `cordis` toolset can read and modify it;
 - applies the personal overlay from `~/.dsh` (see [app-boot's Personal config](../../packages/ui/app-boot/README.md#personal-config)): `.env` fills environment gaps (ambient > project `.env` > personal `.env`), `config.yaml` patches the booted tree.
 
-The Web surface treats its invoking directory as the default project and loads applicable `AGENTS.md`/`CLAUDE.md` instructions into each agent-loop request prefix with a 65,536-byte render budget.
+The Web surface treats its invoking directory as the default project, loads applicable `AGENTS.md`/`CLAUDE.md` instructions into each agent-loop request prefix with a 65,536-byte render budget, and opts into first-message model titles. The headless surface retains deterministic fallback titles without making the auxiliary title-model request.
 
 ## Install (developer machine)
 

apps/cli/src/web.ts

@@ -40,6 +40,7 @@ export async function runWeb(argv: string[]): Promise<void> {
     boot: {
       persistenceRoot: './.sessions',
       workspaceContext: { maxBytes: 65_536 },
+      sessionTitleLlm: true,
     },
   })