Add flags placeholder hints for supported agents and display them in the flags input of the CLI configuration form

- each agent should propose 'flags' placeholder. then use it in the form, e.g. Antigravity: `--model 'Gemini 3.8 Flash (High)'`
- Property 'flags_placeholder' does not exist on type '{ docs_url: string; homepage_url: string; flags_placeholder: string; } | { docs_url: string; homepage_url: string; } | { docs_url: string; homepage_url: string; } | { docs_url: string; homepage_url: string; } | { ...; } | { ...; } | { ...; }'.   Property 'flags_placeholder' does not exist on type '{ docs_url: string; homepage_url: string; }'
- in [Pasted text], if [Fragment] is not empty, should prefix 'e.g. '

└── apps
    └── editor
        └── src
            ├── constants
            │   └── agents.ts
            ├── i18n
            │   └── translations
            │       └── views
            │           └── shared
            │               └── actions
            │                   └── agent
            │                       ├── create.ts
            │                       └── index.ts
            ├── types
            │   └── cli-configuration.ts
            ├── utils
            │   └── cli-configuration-format-converters.ts
            └── views
                └── shared
                    ├── actions
                    │   └── agent
                    │       ├── create.ts
                    │       └── update.ts
                    ├── forms
                    │   └── EditCliConfigurationForm
                    │       └── EditCliConfigurationForm.tsx
                    └── i18n
                        └── translations
                            └── edit-cli-configuration-form.ts

Author: robertpiosik

apps/editor/src/constants/agents.ts

@@ -2,36 +2,44 @@ type Agents = {
   [name: string]: {
     docs_url?: string
     homepage_url?: string
+    flags_placeholder: string
   }
 }
 
 export const AGENTS = {
   Antigravity: {
     docs_url: 'https://antigravity.google/docs/cli/headless/',
-    homepage_url: 'https://antigravity.google/product/antigravity-cli/'
+    homepage_url: 'https://antigravity.google/product/antigravity-cli/',
+    flags_placeholder: "--model 'Gemini 3.8 Flash (High)'"
   },
   'Claude Code': {
     docs_url: 'https://code.claude.com/docs/en/headless',
-    homepage_url: 'https://code.claude.com/docs/en/quickstart'
+    homepage_url: 'https://code.claude.com/docs/en/quickstart',
+    flags_placeholder: ''
   },
   Codex: {
     docs_url: 'https://learn.chatgpt.com/docs/non-interactive-mode',
-    homepage_url: 'https://learn.chatgpt.com/docs/codex/cli'
+    homepage_url: 'https://learn.chatgpt.com/docs/codex/cli',
+    flags_placeholder: ''
   },
   Cursor: {
     docs_url: 'https://cursor.com/docs/cli/headless',
-    homepage_url: 'https://cursor.com/cli'
+    homepage_url: 'https://cursor.com/cli',
+    flags_placeholder: ''
   },
   'Grok Build': {
     docs_url: 'https://docs.x.ai/build/cli/headless-scripting',
-    homepage_url: 'https://x.ai/build'
+    homepage_url: 'https://x.ai/build',
+    flags_placeholder: ''
   },
   'Muse Code': {
     docs_url: 'https://dev.meta.ai/docs/muse-code/extending#headless',
-    homepage_url: 'https://dev.meta.ai/docs/muse-code'
+    homepage_url: 'https://dev.meta.ai/docs/muse-code',
+    flags_placeholder: ''
   },
   OpenCode: {
     docs_url: 'https://opencode.ai/docs/cli/',
-    homepage_url: 'https://opencode.ai/'
+    homepage_url: 'https://opencode.ai/',
+    flags_placeholder: ''
   }
 } satisfies Agents

apps/editor/src/views/shared/forms/EditCliConfigurationForm/EditCliConfigurationForm.tsx

@@ -104,6 +104,11 @@ export const EditCliConfigurationForm: React.FC<Props> = (props) => {
               type="text"
               value={flags || ''}
               on_change={set_flags}
+              placeholder={
+                agent && AGENTS[agent as keyof typeof AGENTS]?.flags_placeholder
+                  ? `e.g. ${AGENTS[agent as keyof typeof AGENTS]?.flags_placeholder}`
+                  : undefined
+              }
             />
           </UiField>
         </UiFieldset>