Typing mode does not support IME input (Chinese/Japanese/Korean); Cmd+V paste of CJK text also fails

Summary

Typing mode (T in draw mode) only accepts ASCII letters and digits. Text composed through a macOS input method (IME) — e.g. Traditional Chinese Zhuyin/Bopomofo, Pinyin, Japanese, Korean — never appears on screen: the candidate/composition window never shows up, and no characters are inserted. Pasting pre-copied Chinese text with Cmd+V in typing mode does not work either, so there is currently no way to put CJK text on a ZoomIt annotation at all.

Steps to reproduce

1. macOS 26.5.2 (build 25F84), ZoomIt for Mac 12.21.0 (latest release)
2. Switch the system input source to Traditional Chinese — Zhuyin (or any CJK IME)
3. Press Ctrl+1 (zoom), click to enter draw mode, press T for typing mode
4. Type — expected composition (e.g. ㄋㄧˇ ㄏㄠˇ → 你好)

Expected: IME composition window appears; the confirmed characters are drawn on screen, as when typing in any other macOS app.

Actual: Nothing appears — no composition window, no characters. Only unmodified ASCII letters/digits are drawn. Cmd+V with CJK text on the clipboard also inserts nothing.

Notes

• The Windows version of ZoomIt has supported IME input in typing mode since v6.0, so this looks like a gap in the new Mac codebase rather than a design decision — typing mode appears to consume raw key events without going through the NSTextInputClient composition path.
• Use case: ZoomIt is very popular with teachers presenting in CJK locales (this report comes from a classroom in Taiwan). Zoom/draw/OCR all work great; typing is the one feature we cannot use.
• Related: #44 asks for zh-Hant UI localization — IME support in typing mode would arguably matter even more for the same audience.

Thanks for bringing ZoomIt to the Mac — happy to test a fix or beta build.

Start at the macOS typing mode entered with T in draw mode and inspect how it consumes raw key events, particularly the NSTextInputClient composition path. Reproduce with a CJK IME and Cmd+V using the steps in the issue. Done means composition candidates appear, confirmed CJK characters are drawn, and pasted CJK text is inserted.