Add tests for ConditionTags and CreatePlayerModal

ConditionTags: rendering, remove callback, add picker callback.
CreatePlayerModal: create/edit modes, form validation (name, AC, HP,
level), error display and clearing, onSave/onClose callbacks.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

vitest.config.ts

@@ -30,12 +30,12 @@ export default defineConfig({
 					branches: 55,
 				},
 				"apps/web/src/components": {
-					lines: 52,
-					branches: 49,
+					lines: 59,
+					branches: 55,
 				},
 				"apps/web/src/components/ui": {
-					lines: 83,
-					branches: 74,
+					lines: 86,
+					branches: 83,
 				},
 			},
 		},