feat(tui): introduce comprehensive state management for TUI interface

- Add AppStateRest as the central state struct for managing TUI state.
- Implement InputState for handling user input, autocomplete, and history.
- Create MiscState to manage overlays, notifications, and editor state.
- Introduce ScrollState for viewport scrolling functionality.
- Develop TranscriptCache for efficient message rendering in the chat pane.
- Implement SimpleAgent and SimpleWorkflowEngine for agent lifecycle management.
- Add helper functions for managing effort levels and token counting.
- Organize state-related modules for better maintainability and clarity.

apps/infrastructure/src/tools/graduated.rs

@@ -0,0 +1,26 @@
+//! Graduated check rules: project-defined patterns that flag matching
+//! file paths or content for review during write/edit operations.
+
+/// A project-defined rule that flags a matching file path or content pattern
+/// for review.
+#[derive(Debug, Clone)]
+pub struct GraduatedCheck {
+    pub name: String,
+    pub pattern: String,
+    pub rule: String,
+}
+
+/// Check which graduated checks apply to a given file path/content pair.
+pub fn check_graduated_checks(
+    path: &str,
+    content: &str,
+    checks: &[GraduatedCheck],
+) -> Vec<String> {
+    let mut matches = Vec::new();
+    for check in checks {
+        if path.contains(&check.pattern) || content.contains(&check.rule) {
+            matches.push(check.name.clone());
+        }
+    }
+    matches
+}