Shorten Windows IME submit timeout

[H-Chris233]

User description

Summary

• Shorten the Windows IME native owner-thread and async edit-session waits from 3s to 2s each.
• Keep Rust-side IME_SUBMIT_TIMEOUT greater than the native total wait, reducing the worst-case submit stall from 7s to 5s without allowing late IME commits to race the fallback path.
• Leave clipboard restore timing unchanged because the current path already restores only when the clipboard still matches the inserted text and has delayed-terminal coverage.

Test Plan

• git diff --check
• cargo test --manifest-path "/home/chris233/openless/openless-all/app/src-tauri/Cargo.toml" windows_ime_ipc
• cargo check --manifest-path "/home/chris233/openless/openless-all/app/src-tauri/Cargo.toml" --target "x86_64-pc-windows-gnu"

Notes: Native OpenLessIme.dll build still needs Windows/MSVC CI or real Windows validation.

Refs #491

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PR Type

Bug fix, Tests

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Description

• Shorten native IME wait times

• Cap Rust submit timeout at 5s

• Sync C++ submit timeout constant

• Add regression test for budget

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Diagram Walkthrough

flowchart LR
A["Windows IME native waits"] -- "2s + 2s" --> B["Rust submit timeout (5s)"]
C["C++ submit timeout"] -- "2s" --> A
B -- "verified by" --> D["Regression test"]

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File Walkthrough

Relevant files

Bug fix

windows_ime_ipc.rs Lower Rust IME timeout budget openless-all/app/src-tauri/src/windows_ime_ipc.rs Reduces native owner-thread and async edit-session waits from 3s to 2s. Keeps the Rust submit timeout at 5s, preserving the native wait margin. Adds a regression test asserting the 5000ms follow-up stall budget. +7/-2 text_service.cpp Match native IME timeout in C++ openless-all/app/windows-ime/src/text_service.cpp Lowers kSubmitTextTimeoutMs from 3000 to 2000. Aligns the Windows IME message timeout with the shorter native wait path. +1/-1

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[github-actions]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

🎫 Ticket compliance analysis ✅ 491 - PR Code Verified Compliant requirements: Native IME wait timeouts shortened from 3s to 2s. Rust submit timeout kept above the native total wait and capped at 5s. Regression test added for the timeout budget. Requires further human verification: Real Windows end-to-end validation that recording no longer causes the multi-second stall and that IME commits still behave correctly under slow/native edge cases.

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ No major issues detected