Integrate idle todo prompts

config.example.toml

@@ -1,6 +1,13 @@
 [defaults]
 profile = "git-bash"
 
+[todos]
+idle_seconds = 90
+prompts = [
+  "Review the latest changes and summarize anything risky.",
+  "Run the fastest relevant validation and report failures.",
+]
+
 [profiles.codex-fast]
 command = "codex"
 args = ["--model", "gpt-5.4-mini"]

docs/devlogs/2026-07-07-idle-terminal-todo-prompts.md

@@ -0,0 +1,28 @@
+# Idle terminal todo prompts
+
+Date: 2026-07-07
+Release target: unreleased
+
+## Summary
+
+- Added settings-managed todo prompts that can be offered to idle terminals.
+
+## What Changed
+
+- Added persisted `[todos]` config support for enabling idle prompts, setting the quiet delay, and storing prompt text.
+- Added a TODO section to the redesigned settings pane with add, edit, delete, enable, and quiet-delay controls.
+- Added per-pane quiet tracking and a small follow-up dialog that can send, cycle, remove, or dismiss queued prompts.
+- Updated the example config with sample todo prompts.
+
+## Why It Matters
+
+- Users can keep spare terminals productive by preparing follow-up prompts ahead of time, then sending one when a pane has gone quiet.
+
+## Validation
+
+- `cargo check`
+- `npm test`
+
+## Release Notes
+
+- New settings todo list can suggest queued follow-up prompts for quiet panes.