Add todo mode and replace the plan with TODO.md

internal/agents/guidance.go

@@ -3,9 +3,12 @@ package agents
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"regexp"
 
+	"g.fc.run/misc/byre/internal/api"
 	"g.fc.run/misc/byre/internal/claude"
+	"g.fc.run/misc/byre/internal/todo"
 )
 
 const guidance = `You are running inside byre. The human reads your work in byre's web UI, not a terminal.
@@ -55,11 +58,21 @@ func (m *Manager) bounceProseQuestion(l *live) claude.HookFunc {
 	}
 }
 
-func remindGuidance(ctx context.Context, input json.RawMessage) (map[string]any, error) {
-	return map[string]any{
-		"hookSpecificOutput": map[string]any{
-			"hookEventName":     "UserPromptSubmit",
-			"additionalContext": guidance,
-		},
-	}, nil
+func taskGuidance(task api.Task) string {
+	if task.TodoItem == nil {
+		return guidance
+	}
+	return guidance + fmt.Sprintf("\n- This task was started from the item %q in %s at the repo root. When the work is done, remove that item from %s in this worktree, so the removal lands in the same merge as the work.",
+		*task.TodoItem, todo.File, todo.File)
+}
+
+func remindGuidance(text string) claude.HookFunc {
+	return func(ctx context.Context, input json.RawMessage) (map[string]any, error) {
+		return map[string]any{
+			"hookSpecificOutput": map[string]any{
+				"hookEventName":     "UserPromptSubmit",
+				"additionalContext": text,
+			},
+		}, nil
+	}
 }