feat: add support acp in common chat (#369)

sources/settings/AgentsSettings.cpp

@@ -0,0 +1,56 @@
+// Copyright (C) 2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+#include "AgentsSettings.hpp"
+
+#include <QDir>
+
+#include "SettingsConstants.hpp"
+#include "SettingsTr.hpp"
+
+namespace QodeAssist::Settings {
+
+AgentsSettings &agentsSettings()
+{
+    static AgentsSettings settings;
+    return settings;
+}
+
+AgentsSettings::AgentsSettings()
+{
+    setAutoApply(false);
+
+    setDisplayName(Tr::tr("Agents"));
+
+    agentExtraPaths.setSettingsKey(Constants::AGENT_EXTRA_PATHS);
+    agentExtraPaths.setLabelText(Tr::tr("Extra PATH for launching agents:"));
+    agentExtraPaths.setDisplayStyle(Utils::StringAspect::LineEditDisplay);
+    agentExtraPaths.setToolTip(
+        Tr::tr(
+            "Directories to prepend to PATH when launching ACP agents, and to search for "
+            "the agent's executable. Useful when Qt Creator is started from the dock and "
+            "doesn't see Homebrew, nvm, uv, etc. Separate multiple entries with '%1'.")
+            .arg(QDir::listSeparator()));
+#ifdef Q_OS_MACOS
+    agentExtraPaths.setDefaultValue(QStringLiteral("/opt/homebrew/bin:/usr/local/bin"));
+#else
+    agentExtraPaths.setDefaultValue(QString{});
+#endif
+
+    agentForwardedVariables.setSettingsKey(Constants::AGENT_FORWARDED_VARIABLES);
+    agentForwardedVariables.setLabelText(Tr::tr("Forward these variables to agents:"));
+    agentForwardedVariables.setDisplayStyle(Utils::StringAspect::LineEditDisplay);
+    agentForwardedVariables.setToolTip(
+        Tr::tr(
+            "Names of environment variables (not their values) passed on to ACP agents, "
+            "separated by spaces or commas. A variable already present in Qt Creator's own "
+            "environment is used as is; on macOS and Linux the rest are read once from a login "
+            "shell, so a token exported in your shell profile reaches agents even when Qt "
+            "Creator was started from the dock."));
+    agentForwardedVariables.setDefaultValue(QStringLiteral("CLAUDE_CODE_OAUTH_TOKEN"));
+
+    readSettings();
+}
+
+} // namespace QodeAssist::Settings