ci: test Python 3.15 and 3.15t as supported versions

.github/workflows/_checks.yml

@@ -53,6 +53,7 @@ jobs:
           - "3.12"
           - "3.13"
           - "3.14"
+          - "3.15"
     steps:
       - uses: actions/checkout@v6
       - uses: extractions/setup-just@v4
@@ -72,6 +73,8 @@ jobs:
         include:
           - python-version: "3.14t"
             extras: "logging,sentry,fastapi,litestar,faststream,fastmcp,fastapi-metrics,litestar-metrics,faststream-metrics,fastmcp-metrics,otl-http"
+          - python-version: "3.15t"
+            extras: "logging,sentry,fastapi,litestar,faststream,fastmcp,fastapi-metrics,litestar-metrics,faststream-metrics,fastmcp-metrics,otl-http"
     steps:
       - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v8.2.0

README.md

@@ -69,7 +69,7 @@ The following intentionally differ:
 
 - Configuration. `lite-bootstrap` uses frozen `dataclass` configs with no `pydantic` / `pydantic-settings` runtime dependency, which is what makes it "lite". `microbootstrap` configures everything through `pydantic-settings` models.
 - Extras. `lite-bootstrap` has one mandatory runtime dependency, the pure-Python `typing-extensions`. Every instrument (`sentry`, `otl`, `logging`, `pyroscope`) and every framework (`fastapi`, `litestar`, `faststream`, `fastmcp`) is its own extra, plus an opt-in `orjson` speedup for logging, per-pair combos (`fastapi-sentry`, `litestar-otl`, `faststream-metrics`, …) and `*-all` rollups. `microbootstrap` bundles the full observability stack (opentelemetry, sentry-sdk, structlog, pyroscope-io, rich, pydantic-settings, …) as base dependencies and only splits framework packages into extras.
-- Free-threading. `lite-bootstrap` runs on free-threaded CPython 3.14t. Every extra whose dependencies are pure Python installs there. The rest are blocked upstream: `orjson` and `pyroscope` have no free-threaded wheels, and `otl` needs `grpcio`, so use `otl-http` instead.
+- Free-threading. `lite-bootstrap` runs on free-threaded CPython 3.14t and 3.15t. Every extra whose dependencies are pure Python installs there. The rest are blocked upstream: `orjson` and `pyroscope` have no free-threaded wheels, and `otl` needs `grpcio`, so use `otl-http` instead.
 - Scope. `lite-bootstrap` only wires instruments. It does not include a Granian server runner or a console writer.
 
 ## Links

pyproject.toml

@@ -15,6 +15,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: 3.15",
     "Typing :: Typed",
     "Topic :: Software Development :: Libraries",
 ]

tests/test_types.py

@@ -0,0 +1,5 @@
+from lite_bootstrap.types import UNSET
+
+
+def test_unset_repr() -> None:
+    assert repr(UNSET) == "UNSET"