chore: bump version to 0.10.3

Patch bump after the class-based extension refactor (ba01be1) — no
behavior, command, or API change.

Bumped in pyproject.toml, extension/manifest.json and uv.lock.

Verification: uv run browser-cli -V -> 0.10.3; uv run pytest -q -> 409
passed, 105 skipped.

extension/manifest.json

@@ -1,7 +1,7 @@
 {
   "manifest_version": 3,
   "name": "browser-cli",
-  "version": "0.10.2",
+  "version": "0.10.3",
   "description": "Control your browser from the terminal or Python SDK",
   "permissions": [
     "tabs",

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "browser-cli"
-version = "0.10.2"
+version = "0.10.3"
 description = "Control your real running browser from the terminal or Python SDK"
 requires-python = ">=3.10"
 dependencies = [

uv.lock

@@ -4,7 +4,7 @@ requires-python = ">=3.10"
 
 [[package]]
 name = "browser-cli"
-version = "0.10.2"
+version = "0.10.3"
 source = { editable = "." }
 dependencies = [
     { name = "click" },