Migration: Tabs tabPosition → tabPlacement with Value Mapping

Context

The Tabs block renames tabPosition to tabPlacement and remaps directional values from physical to logical names.

What to Do

1. Rename tabPosition to tabPlacement
2. Map values: left → start, right → end
3. top and bottom are unchanged

Files to Check

Glob: **/*.{yaml,yml} Grep: tabPosition:

Examples

Before

- id: settings_tabs
  type: Tabs
  properties:
    tabPosition: left

After

- id: settings_tabs
  type: Tabs
  properties:
    tabPlacement: start

Before — right position

- id: nav_tabs
  type: Tabs
  properties:
    tabPosition: right

After

- id: nav_tabs
  type: Tabs
  properties:
    tabPlacement: end

Before — top (no value change)

- id: main_tabs
  type: Tabs
  properties:
    tabPosition: top

After

- id: main_tabs
  type: Tabs
  properties:
    tabPlacement: top

Edge Cases

• If the value is an operator expression (e.g., tabPosition: { _state: position }), rename the key to tabPlacement but flag for manual review — the state value may contain "left" or "right" that also needs updating
• tabPosition is a unique property name — safe to rename globally without block-type checking

Verification

grep -rn 'tabPosition:' --include='*.yaml' --include='*.yml' .

Should return zero matches.