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Safe mode: one run with only the shell working (the app menu, --safe-mode, Shift at launch on Windows)

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Host: `safe.rs` is a flag in this process's memory, never written to disk, so the next normal start is back to the owner's setup. While it is on a site tab gets the tab bridge and nothing of the app's page layers: its document-start scripts are `SiteHooks::safe_init_scripts` (default: the bridge alone) instead of `init_scripts`; `site_page_loaded`, `tab_placed` and `tab_background` are not called; `page_scripts` is empty; `eval_in_site_tabs` does nothing. So no page runtime, plugins, theme, custom CSS, feature flags, fixes, hotfix data or words reach a page: the site runs as in a browser, and only the shell is the app's. It starts from the launch argument `--safe-mode` (for when the interface itself is broken), from Shift held while the app starts (Windows), or from the shell: `safe_mode_get` / `safe_mode_set {on}` (shell-only), where a switch rebuilds every tab webview (profiles marked stale, `tabs-rebuild` asks the shell for its layout) so document-start scripts change too. Tests: the argument, the flag, and that app.rs and host.rs gate every layer.

Frame: the app menu's "Restart in safe mode…" says what it does before anything reloads; while on, the titlebar shows an amber "Safe mode | Leave" chip (one click leaves) and the row reads "Leave safe mode"; the chrome drops its theme (and pane themes) and takes it back on leaving, without touching the first-frame cache. `features.safeMode` (on by default).
This commit is contained in:
CRTkafa 2026-09-30 23:13:03 +07:00
parent 08e2ca3998
commit 30cc85f3ff
19 changed files with 342 additions and 20 deletions
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crates/waybetter-host/Cargo.toml
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@ -64,7 +64,7 @@ reqwest = { version = "0.13", default-features = false, features = ["rustls-no-p
rustls = { version = "0.23", default-features = false, features = ["ring"], optional = true }
[target.'cfg(windows)'.dependencies]
windows = { version = "0.62", features = ["Win32_Foundation", "Win32_System_Com", "Win32_System_Threading", "Win32_UI_Shell", "Win32_UI_WindowsAndMessaging"], optional = true }
windows = { version = "0.62", features = ["Win32_Foundation", "Win32_System_Com", "Win32_System_Threading", "Win32_UI_Input_KeyboardAndMouse", "Win32_UI_Shell", "Win32_UI_WindowsAndMessaging"], optional = true }
# The WebView2 COM interfaces wry already links (hidden tabs: low memory target).
webview2-com = { version = "0.39", optional = true }
# Clipboard sequence number (skip unchanged polls) and password-manager exclusion formats.