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Diffstat (limited to 'docs/ARCHITECTURE.md')
| -rw-r--r-- | docs/ARCHITECTURE.md | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md index c35cdd8..8d4c72b 100644 --- a/docs/ARCHITECTURE.md +++ b/docs/ARCHITECTURE.md @@ -46,15 +46,15 @@ To point pi-chrome at an existing tab, pass `targetId`, `urlIncludes`, or `title ## Background mode -The existing background setting is a hard session policy, enabled by default. No separate lock/unlock command is needed. +The background setting is a hard session policy when on. In this fork it is off by default: every call still defaults to background, and an agent may pass `background:false` (or call `chrome_tab activate`) when it needs a tab showing. An inactive tab takes trusted CDP input and renders screenshots (measured 2026-11-14), so that is rarely needed. ```text /chrome background on # enforce no explicit window focus/tab activation -/chrome background off # allow foreground/watch mode +/chrome background off # default: agents may bring a tab forward when they ask ``` - With background on, per-call `background:false` and legacy `foreground:true` cannot override the policy. `chrome_tab activate` errors with instructions to ask the user to turn background off. -- With background off, calls may focus Chrome; per-call `background:true` still avoids explicit focus/tab activation. +- With background off, calls stay in the background unless they pass `background:false`; `chrome_tab activate` defaults to foreground. - Policy is applied in `authorizedBridgeSend` for every tool, including `chrome_launch(url)`, tab creation, and tools without a background parameter. Each session sends its own effective `background`/`foreground` flags through the shared bridge. - All worker window-focus/tab-activation writes go through a guarded helper. Background tab creation uses `active:false`; implicit automation windows remain `focused:false`. - Screenshots use CDP `Page.captureScreenshot` with `fromSurface:true` and `captureBeyondViewport:false`. They target a tab, not whichever tab happens to be visible. There is no `captureVisibleTab`/activation fallback on debugger or capture failure. PNG/JPEG output is unchanged; full-page capture retains tiles plus a JSON manifest and restores scroll position best-effort, including on failure. |