[ESC] Extra Special Core

ExtraSpecialCore 1.2.0 — Anchor layout foundation

Consumer mods should depend on [1.2.0,2.0) for anchor APIs and search-box helpers.

Layout & screens

• Anchor layout API — EscAnchor, EscInsets, EscLayoutSpec, EscLayout, and EscRect helpers for resolving widget and panel bounds from parent rects instead of hard-coded pixel math.
• EscScreen base class — Subclasses implement buildLayout(); called automatically from init() on open and resize. Includes addAnchoredButton, addButton, and anchor-based widget placement helpers.
• Column splits — EscRect.splitColumns() for proportional multi-column layouts (e.g. 25% / 50% / 25%).
• Fixed-aspect fitting — EscLayout.fitContained() and EscLayout.fitScale() for content with a design size (keyboards, diagrams) that scales uniformly inside a parent rect.
• Unit tests — EscLayoutTest covers anchor resolve, fill, stretch, and column splits.

Text & widgets

• EscText helpers — drawFitted / drawInRect for bounded cells; drawScrollingString for single-line overflow; measureLineHeight for font-aware vertical centering.
• EscSearchBox — Single-line search field with scrolling hint, clip, and ESC font formatting. recommendedHeight(Font) sizes the field to one line of text. Text and hint render vertically centered; cursor uses getScreenX().
• EscScreen.addSearchBox() — Creates, sizes, and registers search widgets on the screen (panels expose bounds via bindSearchBox() rather than constructing widgets themselves). Overloads for message + hint; addAnchoredSearchBox() for anchor specs.

Migration

• See LAYOUT_MIGRATION.md for before/after patterns when moving mod screens off absolute pixels.
• See GUI_VISUAL_CHECKLIST.md for scale/resolution regression testing after layout changes.