Summary

Replaced the custom YAML completion provider with generic schema-driven completion based on WORKFLOW_YAML_SCHEMA, backend action/binding schemas, and live workflow definitions. Also removed obsolete completion state and fixed clipped Monaco completion details.

Why

Completions must adapt automatically to selected actions, binding kinds, available definition references, and workflow tasks without maintaining key-specific completion logic.

How to review

Focus on:

• completion.ts: dynamic schema augmentation and filtering.
• language.ts: Monaco YAML schema updates.
• useYamlEditorController.ts: action, binding, and live definition integration.
• Completion coverage for action inputs/settings, binding settings/references, flow.do, and incomplete YAML.
• Removal of the old custom provider, completion types, and unused taskIds state.

Validation

• Frontend tests: 224 passed.
• TypeScript typecheck passed.
• ESLint passed for touched files.
• Production build passed.
• git diff --check passed.