Plan — STICK TO ONE + YOU'RE THE ONE

Intent

Unify the exclusivity code across all four agreement dimensions under one name: STICK TO ONE. Add YOU'RE THE ONE as the new Understanding His B level.

Scope

• Her Ask #1: ONLY HER → STICK TO ONE
• His Declaration #1: ONLY HER → STICK TO ONE
• Understanding Her A: 1 TO 1 → STICK TO ONE — Just Us (Ikaw at Ako lang)
• Understanding His A: 1 TO 1 → STICK TO ONE — Only Her
• Understanding His B: #1 — Be My #1 → YOU'RE THE ONE — Full Princess Mode
• Combo table: update all references
• Mismatch text: ONLY HER → STICK TO ONE
• Version bump v2.6 → v2.7

Approach

Direct edits to index.html. Five code renames + combo table + mismatch text + version + release note. Single commit.

Constraints

Descriptions stay the same — only the codes and labels change. No structural changes to the agreement system.