源码快照 @ 2026-09-01 (source-only, 剔除非源码素材)

packages/agent/runtimeprep/browseruse.go

@@ -0,0 +1,43 @@
+package runtimeprep
+
+import (
+	"os"
+	"strings"
+)
+
+// Browser use is delivered to agents through the daemon-owned `tutti browser`
+// CLI (a chrome-devtools-mcp the daemon drives), not through per-provider MCP
+// injection. The sidecar's only job here is to advertise, per session, whether
+// browser use is enabled — the agent runtime surfaces the `browserUse`
+// capability from this marker, and the browser-use skill is injected when set.
+const (
+	// browserUseSwitchEnv is the operator-facing master switch read from the
+	// tuttid process environment. Browser use is on by default; set to a falsy
+	// value ("0"/"false"/"off"/"no") to disable it for all sessions.
+	browserUseSwitchEnv = "TUTTI_BROWSER_USE"
+
+	// browserUseEnabledSessionEnv is the per-session marker consumed by the
+	// agent runtime (packages/agent/daemon/runtime/browser_capability.go).
+	browserUseEnabledSessionEnv = "TUTTI_BROWSER_USE_ENABLED"
+)
+
+// browserUseEnv returns the per-session env advertising browser use, or nil when
+// it is disabled (by the per-session toggle or the operator master switch).
+func browserUseEnv(sessionEnabled bool) []string {
+	if !sessionEnabled || !BrowserUseDefaultEnabled() {
+		return nil
+	}
+	return []string{browserUseEnabledSessionEnv + "=1"}
+}
+
+// BrowserUseDefaultEnabled reports whether browser use is on. Defaults to true;
+// only an explicit falsy value disables it. Used by the composer (to advertise
+// the capability) and by CLI/skill gating.
+func BrowserUseDefaultEnabled() bool {
+	switch strings.ToLower(strings.TrimSpace(os.Getenv(browserUseSwitchEnv))) {
+	case "0", "false", "off", "no":
+		return false
+	default:
+		return true
+	}
+}