fix(deps): make typer an optional dependency (#40)

Move typer to a `cli` optional extra so library consumers (e.g. the
jackery-ha Home Assistant integration) don't pull in typer/rich, which
can conflict with pre-installed versions in the HA Docker image.

Guard the typer import in cli.py with a friendly error message when
the extra is not installed.

Fixes: #39

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: jlopez

README.md

@@ -13,14 +13,14 @@ the device or its firmware.
 ## Quick start
 
 ```bash
-uvx socketry login --email you@example.com --password 'yourpass'
-uvx socketry get
+uvx 'socketry[cli]' login --email you@example.com --password 'yourpass'
+uvx 'socketry[cli]' get
 ```
 
 Or install it once and use `socketry` directly:
 
 ```bash
-uv tool install socketry
+uv tool install 'socketry[cli]'
 socketry login --email you@example.com --password 'yourpass'
 socketry get
 ```
@@ -49,13 +49,16 @@ properties returned by newer firmware are displayed as raw key/value pairs.
 
 ```bash
 # Install as a CLI tool
-uv tool install socketry
+uv tool install 'socketry[cli]'
 
 # Or run directly without installing
-uvx socketry --help
+uvx 'socketry[cli]' --help
 
-# Or install as a library
+# Or install as a library only (no CLI dependencies)
 pip install socketry
+
+# Or install with CLI included
+pip install 'socketry[cli]'
 ```
 
 ## CLI usage

pyproject.toml

@@ -9,12 +9,14 @@ authors = [
 requires-python = ">=3.11"
 license = "MIT"
 dependencies = [
-    "typer>=0.9",
     "aiomqtt>=2.0",
     "aiohttp>=3.9",
     "pycryptodome>=3.19",
 ]
 
+[project.optional-dependencies]
+cli = ["typer>=0.9"]
+
 [project.scripts]
 socketry = "socketry.cli:app"
 
@@ -24,6 +26,7 @@ build-backend = "uv_build"
 
 [dependency-groups]
 dev = [
+    "socketry[cli]",
     "aioresponses>=0.7",
     "mypy>=1.19.1",
     "pre-commit>=4.5.1",

src/socketry/cli.py

@@ -8,7 +8,10 @@
 import sys
 from datetime import datetime
 
-import typer
+try:
+    import typer
+except ImportError:
+    raise SystemExit("socketry CLI requires the 'cli' extra: pip install socketry[cli]") from None
 
 from socketry.client import Client
 from socketry.properties import GROUP_TITLES, MODEL_NAMES, PROPERTIES, Setting, resolve