feat: fix Cursor hook delivery and improve notify workflow

Route hook notifications through /dev/tty and client_tty so OSC reaches
Ghostty when Cursor captures stdout. Add afterAgentResponse hook, hook
logging, debounce, split test modes, and use directory name for titles.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/notify/test.go

@@ -0,0 +1,111 @@
+package notify
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/longbin/agent-notify/internal/tmux"
+)
+
+const defaultTestTitle = "agent-notify"
+const defaultTestBody = "测试通知 — 如果你看到这条，说明配置正确"
+
+type claudeTestResponse struct {
+	TerminalSequence string `json:"terminalSequence"`
+}
+
+func TestCursor(title, body string, tryAll bool) (SendResult, error) {
+	if title == "" {
+		title = defaultTestTitle
+	}
+	if body == "" {
+		body = defaultTestBody + " [cursor]"
+	}
+
+	if tryAll {
+		return testCursorAll(title, body)
+	}
+
+	result, err := SendAutoWithResult("osc777", title, body)
+	printTestStatus("cursor", result, err)
+	return result, err
+}
+
+func testCursorAll(title, body string) (SendResult, error) {
+	inTmux := tmux.InTmux()
+	methods := []DeliveryMethod{MethodDirectStdout, MethodPassthroughStdout, MethodClientTTYRaw, MethodClientTTYPassthrough}
+	if !inTmux {
+		methods = []DeliveryMethod{MethodDirectStdout}
+	}
+	clientTTY, _ := tmux.ClientTTY()
+
+	var lastResult SendResult
+	var lastErr error
+	for i, method := range methods {
+		result, err := SendWithResult(SendOptions{
+			Protocol:  "osc777",
+			Title:     title,
+			Body:      fmt.Sprintf("%s [%s]", body, method),
+			InTmux:    inTmux,
+			Layers:    1,
+			ClientTTY: clientTTY,
+			Method:    method,
+		})
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "try %d/%d %s: FAIL %v\n", i+1, len(methods), method, err)
+			lastErr = err
+			continue
+		}
+		fmt.Fprintf(os.Stderr, "try %d/%d %s: OK (check Ghostty notification)\n", i+1, len(methods), method)
+		lastResult = result
+	}
+	if lastResult.Method == "" && lastErr != nil {
+		return lastResult, lastErr
+	}
+	fmt.Fprintf(os.Stderr, "mode=cursor try-all done ssh=%v tmux=%v\n", tmux.IsSSHSession(), inTmux)
+	return lastResult, nil
+}
+
+func printTestStatus(mode string, result SendResult, err error) {
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "agent-notify: %s test FAILED: %v\n", mode, err)
+		return
+	}
+	fmt.Fprintf(os.Stderr,
+		"agent-notify: %s test sent via %s (ssh=%v tmux=%v) — check Ghostty desktop notification\n",
+		mode, result.Method, tmux.IsSSHSession(), tmux.InTmux(),
+	)
+}
+
+func TestClaude(title, body string, apply bool, out io.Writer) (SendResult, error) {
+	if title == "" {
+		title = defaultTestTitle
+	}
+	if body == "" {
+		body = defaultTestBody + " [claude]"
+	}
+	seq := BuildSequence("osc777", title, body)
+	if out == nil {
+		out = os.Stdout
+	}
+	if !apply {
+		resp := claudeTestResponse{TerminalSequence: seq}
+		enc := json.NewEncoder(out)
+		enc.SetEscapeHTML(false)
+		if err := enc.Encode(resp); err != nil {
+			return SendResult{}, err
+		}
+		fmt.Fprintln(os.Stderr, "agent-notify: claude test JSON printed (use --apply to emit)")
+		return SendResult{Method: "terminal-sequence-json"}, nil
+	}
+	result, err := EmitSequence(seq)
+	printTestStatus("claude", result, err)
+	return result, err
+}
+
+func TestNotification(title, body string) error {
+	_, err := TestCursor(title, body, false)
+	return err
+}