chore: release 1.0.0

Bump version to 1.0.0 and pin the donglora dep to >=1.0.0,<2.0.0 (PyPI), matching the freshly-published donglora 1.0.0 client.


Also knock out two preexisting lint failures surfaced by the release-time `just check` gauntlet:

* orac/crypto.py: drop the redundant int() wrap around round() (RUF046).

* orac/state.py: widen _state value type to include list[list[float]] so heard_positions type-checks under pyright.

pyproject.toml

@@ -1,12 +1,12 @@
 [project]
 name = "donglora-ai-bot"
-version = "0.1.0"
+version = "1.0.0"
 description = "MeshCore AI chatbot — default mesh name 'Orac'"
 license = "MIT"
 requires-python = ">=3.10"
 authors = [{ name = "Stephen Waits" }]
 dependencies = [
-    "donglora",
+    "donglora>=1.0.0,<2.0.0",
     "anthropic",
     "cobs",
     "pyserial",