Release 0.0.7-beta.1: nine-key pre-edit letters, rail fixes, full emoji and symbols, toolchain bump

[Slacker-LLC]

Summary

• Nine-key pre-edit is always letters. It fell back to the raw digits whenever no word read every digit (669, or a long string whose top candidate covers only its start). The local decoder now spells any digits (spellDigits: whole syllables, the start of an unfinished one), and alignment to Rime's top candidate (readingForPrefix) takes its characters as far as they fit by full reading, cut reading or initial (669 → 模型 → mo'x), then spells the rest.
• Tapping a bare initial in the nine-key rail works: it is fixed like a syllable, so candidates start with it (6 → m → 没). Before, the pre-edit snapped back to Rime's top candidate.
• Symbol rails (nine-key, stroke, numeric) are one panel with hairlines, faded edges and flat items, three to the rail; the editor cell is a circled plus.
• Nine-key action column: 删除 · 重输 · 0 · 确定.
• Emoji: Unicode 18.0's base emoji (scripts/generate_emoji_catalog.py → assets/emoji/unicode_emoji.tsv), curated order kept, filtered by what the font can draw, loaded in the background.
• Symbols: SymbolCatalog adds Chinese marks, special signs, ~100 kaomoji and new 拼音 / 日文 / 注音 / 制表 categories; long items (kaomoji) get three wide cells instead of being cut off.
• Icons: the keyboard switcher's five icons share the toolbar keyboard's frame; tile icons are 28dp on both tile pages.
• Switches on iOS geometry: a 51×31 track with a 27 knob, 2dp from every edge whether on or off; a soft shadow; the knob stretches while pressed. Fuzzy per-pair switches that are off no longer show a blue track in dark mode.
• New brand mark: "IME" on a white tile, with the I drawn as a blue text cursor. The same mark is used for the launcher icon (at 3/4 scale inside the mask), the in-app header, the splash screen and the README images, plus a monochrome layer for themed icons.
• One grid for preferences and home:
  • Icons are centred on their row.
  • 音效 / 震动手感 / 震动强度 nest under their switch instead of repeating its icon.
  • Switches, chevron glyphs and buttons end on the 16dp line.
  • Slider tracks span the text column.
  • Row padding is even.
  • Hairlines start on the text of the row above.
  • Home step marks, the voice icon and the ready mark are all 32dp.
  • PreferencesGeometryInstrumentedTest pins these rules on the preferences and fuzzy pages.
• Toolchain (Dependabot build: bump the gradle-minor-and-patch group across 2 directories with 5 updates #128): Gradle 8.14.5, AGP 8.13.2, Kotlin 2.4.20, androidx.test 1.3/1.7. The new GestureBackNavigation lint is suppressed with a reason on the three activities that already register OnBackInvokedCallback on 33+.
• Version 0.0.7-beta.1 (versionCode 701), CHANGELOG and NINE_KEY_REFERENCE updated.

Test plan

• Unit tests (incl. 3000 random digit strings always spelled with letters, alignment cases, emoji/symbol catalogs) and lint
• Full instrumented suite on the API 36 emulator (132 tests, rerunning on the final head)
• scripts/typing_stress_e2e.py, new cases: nine-key pre-edit never shows digits, every rail reading responds (1–18 digits), symbol panel (13 categories), emoji, rail + 0, candidate expand, swipe-up clear, landscape, dark mode

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