Support disabling tool suggest for specific tools. (#20072)

## Summary
- Add `disable_tool_suggest` to app and plugin config, schema, and
TypeScript output
- Exclude disabled connectors and plugins from tool suggestion discovery
- Persist "never show again" tool-suggestion choices back into
`config.toml`
- Update config docs and add coverage for connector and plugin
suppression

## Testing
- Added and updated unit tests for config persistence and tool-suggest
filtering
- Not run (not requested)

docs/config.md

@@ -48,6 +48,16 @@ Use `$` in the composer to insert a ChatGPT connector; the popover lists accessi
 apps. The `/apps` command lists available and installed apps. Connected apps appear first
 and are labeled as connected; others are marked as can be installed.
 
+Codex stores "never show again" choices for tool suggestions in `config.toml`:
+
+```toml
+[tool_suggest]
+disabled_tools = [
+  { type = "plugin", id = "slack@openai-curated" },
+  { type = "connector", id = "connector_google_calendar" },
+]
+```
+
 ## Notify
 
 Codex can run a notification hook when the agent finishes a turn. See the configuration reference for the latest notification settings: