checkpoint: SQLite 清理——业务/测试层统一 PostgreSQL（删 aiosqlite/fakeredis）

- setting: DATABASE_TYPE 收窄为 postgres，DB_URI/ASYNC_DB_URI 去 sqlite 分支
- database: create_async_engine_and_session 去 sqlite 分支（同步 psycopg 引擎保留给 jobstore）
- number_gen: 去 DATABASE_TYPE 非 postgres 早退（advisory lock 恒定走 PG）
- chat/crud: 删 SqliteDb 分支（agno 无硬依赖）
- pyproject/requirements/uv.lock: 删 aiosqlite、fakeredis；conftest 口径注释同步
- test_stat_analysis_tc: docstring 口径 SQLite→PG

backend/uv.lock

@@ -46,15 +46,6 @@ wheels = [
     { url = "https://pypi.tuna.tsinghua.edu.cn/packages/a5/45/30bb92d442636f570cb5651bc661f52b610e2eec3f891a5dc3a4c3667db0/aiofiles-24.1.0-py3-none-any.whl", hash = "sha256:b4ec55f4195e3eb5d7abd1bf7e061763e864dd4954231fb8539a0ef8bb8260e5", size = 15896, upload-time = "2024-06-24T11:02:01.529Z" },
 ]
 
-[[package]]
-name = "aiosqlite"
-version = "0.22.1"
-source = { registry = "https://pypi.tuna.tsinghua.edu.cn/simple" }
-sdist = { url = "https://pypi.tuna.tsinghua.edu.cn/packages/4e/8a/64761f4005f17809769d23e518d915db74e6310474e733e3593cfc854ef1/aiosqlite-0.22.1.tar.gz", hash = "sha256:043e0bd78d32888c0a9ca90fc788b38796843360c855a7262a532813133a0650", size = 14821, upload-time = "2025-12-23T19:25:43.997Z" }
-wheels = [
-    { url = "https://pypi.tuna.tsinghua.edu.cn/packages/00/b7/e3bf5133d697a08128598c8d0abc5e16377b51465a33756de24fa7dee953/aiosqlite-0.22.1-py3-none-any.whl", hash = "sha256:21c002eb13823fad740196c5a2e9d8e62f6243bd9e7e4a1f87fb5e44ecb4fceb", size = 17405, upload-time = "2025-12-23T19:25:42.139Z" },
-]
-
 [[package]]
 name = "alembic"
 version = "1.18.4"
@@ -197,8 +188,6 @@ postgres = [
 
 [package.dev-dependencies]
 dev = [
-    { name = "aiosqlite" },
-    { name = "fakeredis" },
     { name = "pytest" },
     { name = "pytest-asyncio" },
     { name = "ruff" },
@@ -243,8 +232,6 @@ provides-extras = ["postgres"]
 
 [package.metadata.requires-dev]
 dev = [
-    { name = "aiosqlite", specifier = "==0.22.1" },
-    { name = "fakeredis", specifier = ">=2.21.0,<3" },
     { name = "pytest", specifier = "==9.0.2" },
     { name = "pytest-asyncio", specifier = ">=0.24.0" },
     { name = "ruff", specifier = "==0.14.13" },
@@ -353,19 +340,6 @@ wheels = [
     { url = "https://pypi.tuna.tsinghua.edu.cn/packages/c1/8b/5fe2cc11fee489817272089c4203e679c63b570a5aaeb18d852ae3cbba6a/et_xmlfile-2.0.0-py3-none-any.whl", hash = "sha256:7a91720bc756843502c3b7504c77b8fe44217c85c537d85037f0f536151b2caa", size = 18059, upload-time = "2024-10-25T17:25:39.051Z" },
 ]
 
-[[package]]
-name = "fakeredis"
-version = "2.34.1"
-source = { registry = "https://pypi.tuna.tsinghua.edu.cn/simple" }
-dependencies = [
-    { name = "redis" },
-    { name = "sortedcontainers" },
-]
-sdist = { url = "https://pypi.tuna.tsinghua.edu.cn/packages/11/40/fd09efa66205eb32253d2b2ebc63537281384d2040f0a88bcd2289e120e4/fakeredis-2.34.1.tar.gz", hash = "sha256:4ff55606982972eecce3ab410e03d746c11fe5deda6381d913641fbd8865ea9b", size = 177315, upload-time = "2026-02-25T13:17:51.315Z" }
-wheels = [
-    { url = "https://pypi.tuna.tsinghua.edu.cn/packages/49/b5/82f89307d0d769cd9bf46a54fb9136be08e4e57c5570ae421db4c9a2ba62/fakeredis-2.34.1-py3-none-any.whl", hash = "sha256:0107ec99d48913e7eec2a5e3e2403d1bd5f8aa6489d1a634571b975289c48f12", size = 122160, upload-time = "2026-02-25T13:17:49.701Z" },
-]
-
 [[package]]
 name = "fastapi"
 version = "0.138.2"
@@ -1251,15 +1225,6 @@ wheels = [
     { url = "https://pypi.tuna.tsinghua.edu.cn/packages/e9/44/75a9c9421471a6c4805dbf2356f7c181a29c1879239abab1ea2cc8f38b40/sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2", size = 10235, upload-time = "2024-02-25T23:20:01.196Z" },
 ]
 
-[[package]]
-name = "sortedcontainers"
-version = "2.4.0"
-source = { registry = "https://pypi.tuna.tsinghua.edu.cn/simple" }
-sdist = { url = "https://pypi.tuna.tsinghua.edu.cn/packages/e8/c4/ba2f8066cceb6f23394729afe52f3bf7adec04bf9ed2c820b39e19299111/sortedcontainers-2.4.0.tar.gz", hash = "sha256:25caa5a06cc30b6b83d11423433f65d1f9d76c4c6a0c90e3379eaa43b9bfdb88", size = 30594, upload-time = "2021-05-16T22:03:42.897Z" }
-wheels = [
-    { url = "https://pypi.tuna.tsinghua.edu.cn/packages/32/46/9cb0e58b2deb7f82b84065f37f3bffeb12413f947f9388e4cac22c4621ce/sortedcontainers-2.4.0-py2.py3-none-any.whl", hash = "sha256:a163dcaede0f1c021485e957a39245190e74249897e2ae4b2aa38595db237ee0", size = 29575, upload-time = "2021-05-16T22:03:41.177Z" },
-]
-
 [[package]]
 name = "sqlalchemy"
 version = "2.0.51"