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

types/faiss.pyi

@@ -1,20 +0,0 @@
-import numpy as np
-
-class Index:
-    def add(self, x: np.ndarray) -> None: ...
-    def search(self, x: np.ndarray, k: int) -> tuple[np.ndarray, np.ndarray]: ...
-    def remove_ids(self, x: np.ndarray) -> None: ...
-    def add_with_ids(self, x: np.ndarray, xids: np.ndarray) -> None: ...
-    ntotal: int
-
-class IndexIDMap(Index):
-    def __init__(self, base_index: Index) -> None: ...
-    def add_with_ids(self, x: np.ndarray, xids: np.ndarray) -> None: ...
-    def reconstruct(self, key: int) -> np.ndarray: ...
-
-class IndexFlatL2(Index):
-    def __init__(self, d: int) -> None: ...
-
-def read_index(filename: str) -> Index: ...
-def write_index(index: Index, filename: str | None) -> None: ...
-def normalize_L2(x: np.ndarray) -> None: ...