refactor: split agent detection by agent

Move screen detection into per-agent modules and keep visible-state arbitration centralized in terminal state.

Tighten Codex prompt-scoped working detection and Claude hook/screen recovery for stale blocked and idle reports.

Add a focused just recipe for single-test runs.

refs #349

refs #352

1 files changed, 41 insertions, 0 deletions

diff --git a/src/detect/agents/kiro.rs b/src/detect/agents/kiro.rs
new file mode 100644
index 00000000..5ef1fbca
--- /dev/null
+++ b/src/detect/agents/kiro.rs
@@ -0,0 +1,41 @@
+use super::super::AgentState;
+
+/// Kiro CLI detection.
+///
+/// Kiro exposes reliable working and idle terminal markers. Tool approval
+/// prompts render with a stable "requires approval" line and an action menu.
+pub(super) fn detect(content: &str) -> AgentState {
+    let lower = content.to_lowercase();
+
+    let has_approval_request = lower.contains("requires approval");
+    let has_approval_actions = lower.contains("yes, single permission")
+        || lower.contains("trust, always allow")
+        || lower.contains("no (tab to edit)")
+        || lower.contains("esc to close");
+    if has_approval_request && has_approval_actions {
+        return AgentState::Blocked;
+    }
+
+    if lower.contains("kiro is working")
+        || (lower.contains("esc to cancel") && has_kiro_tool_spinner(content))
+    {
+        return AgentState::Working;
+    }
+
+    AgentState::Idle
+}
+
+fn has_kiro_tool_spinner(content: &str) -> bool {
+    content.lines().any(|line| {
+        let trimmed = line.trim_start();
+        let mut chars = trimmed.chars();
+        let Some(first) = chars.next() else {
+            return false;
+        };
+        if !matches!(first, '◔' | '◑' | '◕' | '●') {
+            return false;
+        }
+        let rest = chars.as_str().trim_start();
+        rest.chars().next().is_some_and(char::is_alphabetic)
+    })
+}