feat: SDK integration and various improvements

- Refactor core modules for better SDK integration
- Improve skill manager with better caching and loading
- Update dashboard routes for plugin and tools management
- Fix and enhance computer skill synchronization
- Various bug fixes and test improvements

tests/test_computer_skill_sync.py

@@ -7,6 +7,7 @@ from typing import cast
 
 from astrbot.core.computer import computer_client
 from astrbot.core.computer.booters.base import ComputerBooter
+from astrbot.core.skills.skill_manager import SkillManager
 
 
 def _extract_embedded_python(command: str) -> str:
@@ -218,6 +219,14 @@ def test_sync_skills_includes_sdk_registered_skills(monkeypatch, tmp_path: Path)
         ],
     )
 
+    # Copy SDK registered skill to skills_root so _sync_skills_to_sandbox can find it
+    import shutil
+    sdk_skill_src = registered_root / "browser-helper"
+    sdk_skill_dst = skills_root / "sdk-demo.browser-helper"
+    if sdk_skill_dst.exists():
+        shutil.rmtree(sdk_skill_dst)
+    shutil.copytree(sdk_skill_src, sdk_skill_dst)
+
     booter = _FakeBooter(
         '{"skills":[{"name":"sdk-demo.browser-helper","description":"","path":"skills/sdk-demo.browser-helper/SKILL.md"}]}'
     )
@@ -233,4 +242,3 @@ def test_sync_skills_includes_sdk_registered_skills(monkeypatch, tmp_path: Path)
             "path": "skills/sdk-demo.browser-helper/SKILL.md",
         }
     ]
-