v1.2.0

• Gboard: refactor: drop orphaned preflight checks for store contains and write by id
• Gboard: refactor: one-pass methodsMatching helper in TextActionsPatch
• Gboard: refactor: delete the 4 inline "Resolved, not named" comments
• Gboard: refactor: finish the r() prologue dedup — extract resolveDispatchEntry
• Gboard: refactor: drop the dead sentinel gate and stale switch-era doc in scaleStepTable
• Gboard: refactor: route the signature-check register-count check through the helper too
• Gboard: refactor: deduplicate patch helpers and constants
• Gboard: docs: note the swipe length may be inverted on the delete key
• Gboard: refactor: write Gboard's own preferences from Java too
• Gboard: feat: start at 60% swipe length, 6 toolbar icons, 12 unfolded
• Gboard: feat: six toolbar hotkeys that type a string you choose
• Gboard: docs: record every Material icon Gboard bundles
• Gboard: feat: add Copy and Paste buttons beside Select all