test: comprehensive test coverage and type fixes

- Add 100+ new test files covering provider sources, platform adapters,
  agent runners, star/plugin system, knowledge base, core utils,
  pipeline, computer tools, builtin commands, and dashboard routes
- Fix Python type errors in sqlite.py (col() wrappers for SQLModel),
  astr_agent_tool_exec, core_lifecycle, star context/manager
- Fix TypeScript strict mode errors across 30+ dashboard Vue files
- Add import smoke tests, auth roundtrip, startup tests
- Add compile-all check and CLI entry test for AUR compatibility
- Restore BotMessageAccumulator and helpers lost in merge

tests/test_knowledge_base_tools.py

@@ -0,0 +1,43 @@
+"""Import smoke tests for knowledge_base_tools module."""
+
+import asyncio
+
+import pytest
+
+
+class TestKnowledgeBaseToolsImports:
+    """Verify knowledge_base_tools.py module can be imported and key classes exist."""
+
+    def test_module_import(self):
+        """Import the module without error."""
+        from astrbot.core.tools import knowledge_base_tools
+        assert knowledge_base_tools is not None
+
+    def test_knowledge_base_query_tool(self):
+        """KnowledgeBaseQueryTool is present."""
+        from astrbot.core.tools.knowledge_base_tools import KnowledgeBaseQueryTool
+        assert KnowledgeBaseQueryTool is not None
+        assert KnowledgeBaseQueryTool.name == "astr_kb_search"
+
+    def test_check_all_kb_function(self):
+        """check_all_kb helper is importable."""
+        from astrbot.core.tools.knowledge_base_tools import check_all_kb
+        assert callable(check_all_kb)
+
+    def test_retrieve_knowledge_base_function(self):
+        """retrieve_knowledge_base is importable."""
+        from astrbot.core.tools.knowledge_base_tools import retrieve_knowledge_base
+        import asyncio
+        # It's an async function
+        assert asyncio.iscoroutinefunction(retrieve_knowledge_base)
+
+    def test_module_all(self):
+        """Module __all__ is properly defined."""
+        from astrbot.core.tools.knowledge_base_tools import (
+            KnowledgeBaseQueryTool,
+            check_all_kb,
+            retrieve_knowledge_base,
+        )
+        assert KnowledgeBaseQueryTool is not None
+        assert callable(check_all_kb)
+        assert asyncio.iscoroutinefunction(retrieve_knowledge_base)