feat: add Accordion component for UI and Zustand store for coordinator management

- Implemented Accordion component using Radix UI for collapsible sections.
- Created Zustand store to manage coordinator execution state, command chains, logs, and interactive questions.
- Added validation tests for CLI settings type definitions, ensuring type safety and correct behavior of helper functions.

ccw/frontend/src/locales/en/api-settings.json

@@ -289,8 +289,22 @@
     "descriptionPlaceholder": "Optional description for this configuration",
     "selectProvider": "Select a provider",
     "includeCoAuthoredBy": "Include co-authored-by in commits",
+    "coAuthoredBy": "Co-authored",
+    "availableModels": "Available Models",
+    "availableModelsPlaceholder": "Enter model name and press Enter",
+    "availableModelsHint": "Models shown in CLI dropdown menus. Click × to remove.",
     "nameFormatHint": "Letters, numbers, hyphens, underscores only. Used as: ccw cli --tool [name]",
     "nameTooLong": "Name must be {max} characters or less",
+    "settingsFile": "Settings File",
+    "settingsFilePlaceholder": "e.g., /path/to/settings.json",
+    "settingsFileHint": "Path to external Claude CLI settings file (passed via --settings parameter)",
+    "tags": "Tags",
+    "tagsDescription": "Tags for CLI tool routing and auto-selection (e.g., analysis, Debug)",
+    "addTag": "Add tag",
+    "tagInputPlaceholder": "Enter a tag...",
+    "predefinedTags": "Common tags",
+    "removeTag": "Remove tag",
+    "noTags": "No tags added",
     "validation": {
       "providerRequired": "Please select a provider",
       "authOrBaseUrlRequired": "Please enter auth token or base URL"