Rename project from travler-rotor to birdcage

The radome looks like a birdcage, ham operators call satellites
"birds", and it's a nod to saveitforparts saving dishes "for parts."

Package, CLI entry point, class names (BirdcageAntenna), env vars
(BIRDCAGE_PORT, etc.), and CLAUDE.md updated. Hardware references
(Winegard Trav'ler, Trav'ler Pro, Carryout G2) unchanged.

uv.lock

@@ -2,6 +2,21 @@ version = 1
 revision = 3
 requires-python = ">=3.11"
 
+[[package]]
+name = "birdcage"
+version = "2026.2.12.1"
+source = { editable = "." }
+dependencies = [
+    { name = "click" },
+    { name = "pyserial" },
+]
+
+[package.metadata]
+requires-dist = [
+    { name = "click", specifier = ">=8.0" },
+    { name = "pyserial", specifier = ">=3.5" },
+]
+
 [[package]]
 name = "click"
 version = "8.3.1"
@@ -31,18 +46,3 @@ sdist = { url = "https://files.pythonhosted.org/packages/1e/7d/ae3f0a63f41e4d2f6
 wheels = [
     { url = "https://files.pythonhosted.org/packages/07/bc/587a445451b253b285629263eb51c2d8e9bcea4fc97826266d186f96f558/pyserial-3.5-py2.py3-none-any.whl", hash = "sha256:c4451db6ba391ca6ca299fb3ec7bae67a5c55dde170964c7a14ceefec02f2cf0", size = 90585, upload-time = "2020-11-23T03:59:13.41Z" },
 ]
-
-[[package]]
-name = "travler-rotor"
-version = "2025.6.11"
-source = { editable = "." }
-dependencies = [
-    { name = "click" },
-    { name = "pyserial" },
-]
-
-[package.metadata]
-requires-dist = [
-    { name = "click", specifier = ">=8.0" },
-    { name = "pyserial", specifier = ">=3.5" },
-]