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_tool_loop_agent_runner.py

@@ -332,6 +332,11 @@ class BlockingSubagentContext:
     def get_config(self, **_kwargs):
         return {"provider_settings": {}}
 
+    def get_llm_tool_manager(self):
+        from unittest.mock import MagicMock
+
+        return MagicMock()
+
     async def tool_loop_agent(self, **_kwargs):
         self.started.set()
         try:
@@ -1252,7 +1257,7 @@ async def test_skills_like_requery_passes_extra_user_content_parts():
         run_context=run_context,
         tool_executor=cast(Any, MockToolExecutor()),
         agent_hooks=MockHooks(),
-        tool_schema_mode="lazy_load",
+        tool_schema_mode="skills_like",
     )
 
     async for _ in runner.step():