202

[RAprogramm]

Summary

Replace the cb.forget() leak pattern with Closure::once_into_js in the 13 one-shot callback sites listed in #202. JS now owns the boxed closure and deallocates it after the first invocation (or the same accept-the-leak behaviour the crate already had if Telegram never fires the callback).

Files touched

• src/webapp/permissions.rs: request_write_access, request_emoji_status_access, set_emoji_status, open_invoice, download_file, read_text_from_clipboard
• src/webapp/navigation.rs: share_message, request_chat, check_home_screen_status
• src/webapp/dialogs.rs: show_confirm, show_popup, show_scan_qr_popup
• src/webapp/core.rs: invoke_custom_method

API impact

F: 'static + Fn(...) → F: 'static + FnOnce(...). Strict expansion — every Fn/FnMut already implements FnOnce, so existing call sites continue to compile. The bound now also accepts callbacks that move captured state out, which was previously rejected.

Out of scope (kept as forget() for sound reasons)

• src/dom/element.rs::ElementExt::on — multi-shot event listener (e.g. click, input); the closure must outlive the element.
• src/api/{accelerometer,gyroscope,device_orientation}.rs event subscriptions — multi-shot sensor streams.
• Test-only mocks under #[cfg(test)] modules.

Test plan

• cargo check --all-targets --all-features
• cargo test --lib --all-features -p telegram-webapp-sdk (21/21 native — existing tests already exercise the touched paths)
• cargo test --no-run --lib --all-features -p telegram-webapp-sdk (all wasm tests compile)
• cargo +nightly-2025-08-01 fmt --all -- --check
• cargo +1.95 clippy --workspace --all-targets --all-features -- -D warnings
• reuse lint (139/139)
• CI green

[codecov]

Codecov Report

❌ Patch coverage is 0% with 47 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/webapp/permissions.rs	0.00%	18 Missing ⚠️
src/webapp/dialogs.rs	0.00%	11 Missing ⚠️
src/webapp/core.rs	0.00%	9 Missing ⚠️
src/webapp/navigation.rs	0.00%	9 Missing ⚠️

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