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_computer_tool_provider.py

@@ -0,0 +1,25 @@
+"""Import smoke tests for ComputerToolProvider."""
+
+import pytest
+
+
+class TestComputerToolProviderImports:
+    """Verify the computer_tool_provider module can be imported and key classes exist."""
+
+    def test_module_import(self):
+        """Import the module without error."""
+        from astrbot.core.computer import computer_tool_provider
+        assert computer_tool_provider is not None
+
+    def test_computer_tool_provider_class(self):
+        """ComputerToolProvider class is present and callable."""
+        from astrbot.core.computer.computer_tool_provider import ComputerToolProvider
+        assert ComputerToolProvider is not None
+        # Static method exists
+        assert hasattr(ComputerToolProvider, "get_all_tools")
+        assert callable(ComputerToolProvider.get_all_tools)
+
+    def test_module_level_get_all_tools(self):
+        """Module-level get_all_tools function exists."""
+        from astrbot.core.computer.computer_tool_provider import get_all_tools
+        assert callable(get_all_tools)