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, 25 insertions, 0 deletions

diff --git a/src/detect/agents/opencode.rs b/src/detect/agents/opencode.rs
new file mode 100644
index 00000000..5badcad9
--- /dev/null
+++ b/src/detect/agents/opencode.rs
@@ -0,0 +1,25 @@
+use super::super::{has_interrupt_pattern, AgentState};
+
+pub(super) fn detect(content: &str) -> AgentState {
+    // Blocked
+    if content.contains("△ Permission required") || has_opencode_question_prompt(content) {
+        return AgentState::Blocked;
+    }
+
+    // Working
+    if has_interrupt_pattern(&content.to_lowercase()) {
+        return AgentState::Working;
+    }
+
+    AgentState::Idle
+}
+
+fn has_opencode_question_prompt(content: &str) -> bool {
+    let lower = content.to_lowercase();
+    let has_enter_action = lower.contains("enter confirm")
+        || lower.contains("enter submit")
+        || lower.contains("enter toggle");
+    let has_question_nav = content.contains("↑↓ select") || content.contains("⇆ tab");
+
+    lower.contains("esc dismiss") && has_enter_action && has_question_nav
+}