rename: Agent Eyes → Agent Reach

全局重命名：
- 包名: agent_eyes → agent_reach
- CLI: agent-eyes → agent-reach
- 类名: AgentEyes → AgentReach
- 显示名: Agent Eyes → Agent Reach
- GitHub: Panniantong/agent-eyes → Panniantong/Agent-Reach

所有 36 个测试通过，CLI/doctor/read/search 全部正常。

tests/test_cli.py

@@ -1,29 +1,29 @@
 # -*- coding: utf-8 -*-
-"""Tests for Agent Eyes CLI."""
+"""Tests for Agent Reach CLI."""
 
 import pytest
 from unittest.mock import patch
-from agent_eyes.cli import main
+from agent_reach.cli import main
 
 
 class TestCLI:
     def test_version(self, capsys):
         with pytest.raises(SystemExit) as exc_info:
-            with patch("sys.argv", ["agent-eyes", "version"]):
+            with patch("sys.argv", ["agent-reach", "version"]):
                 main()
         assert exc_info.value.code == 0
         captured = capsys.readouterr()
-        assert "Agent Eyes v" in captured.out
+        assert "Agent Reach v" in captured.out
 
     def test_no_command_shows_help(self, capsys):
         with pytest.raises(SystemExit) as exc_info:
-            with patch("sys.argv", ["agent-eyes"]):
+            with patch("sys.argv", ["agent-reach"]):
                 main()
         assert exc_info.value.code == 0
 
     def test_doctor_runs(self, capsys):
-        with patch("sys.argv", ["agent-eyes", "doctor"]):
+        with patch("sys.argv", ["agent-reach", "doctor"]):
             main()
         captured = capsys.readouterr()
-        assert "Agent Eyes" in captured.out
+        assert "Agent Reach" in captured.out
         assert "✅" in captured.out