API Builder V1: Endpoint Workbench Table (core)

[nicdavidson]

Goal
Replace single-endpoint form-first flow with a row-based endpoint workbench for fast bulk creation.

Scope

• Add endpoint table columns: Method | Path | Source | Fields | Filters | Output | Status | Actions
• Inline cell editing
• Row selection state
• Row status badges (draft/valid/error/saved)

Acceptance Criteria

• Can add/edit/save multiple endpoint rows without leaving page
• Editing one row does not rerender entire table
• No focus loss while typing in filters

Candidate files

• src/app/adf-api-builder/components/endpoint-workbench-table.component.ts
• src/app/adf-api-builder/components/endpoint-row-editor.component.ts
• src/app/adf-api-builder/df-api-builder-page.component.ts