fix: clang-tidy

CMakeLists.txt

@@ -123,6 +123,7 @@ option(SLIC3R_ASAN              "Enable ASan on Clang and GCC" 0)
 
 # Python stubgen module
 option(ORCA_BUILD_PYTHON_STUBGEN_MODULE "Build importable Python module for pybind11-stubgen" ON)
+option(ORCA_BUILD_PLUGIN_PERMISSION_PROBE "Build the headless Python plugin permission probe (developer tool)" OFF)
 set(ORCA_BUNDLED_UV_EXECUTABLE "" CACHE FILEPATH "Path to a uv executable to bundle for Python package installation. Leave empty to auto-download.")
 
 # Auto-download uv if not provided by the user.

localization/i18n/list.txt

@@ -366,6 +366,7 @@ src/slic3r/Utils/MoonrakerPrinterAgent.cpp
 src/slic3r/Utils/BBLNetworkPlugin.cpp
 src/slic3r/Utils/OrcaCloudServiceAgent.cpp
 src/slic3r/plugin/PluginAuditManager.cpp
+src/slic3r/plugin/PluginAuditManagerGui.cpp
 src/slic3r/plugin/PluginConfig.cpp
 src/slic3r/plugin/PluginResolver.cpp
 src/slic3r/plugin/CloudPluginService.cpp

scripts/run_gettext.bat

@@ -23,7 +23,7 @@ if %FULL_MODE%==1 (
     call :prepareGettextList "%list_file%" "%filtered_list%" "%missing_list%"
     if "!has_sources!"=="1" (
         if not exist "%generated_i18n%" mkdir "%generated_i18n%"
-        .\tools\xgettext.exe --keyword=L --keyword=_L --keyword=_u8L --keyword=L_CONTEXT:1,2c --keyword=_L_CONTEXT:1,2c --keyword=_u8L_CONTEXT:1,2c --keyword=_L_PLURAL:1,2 --add-comments=TRN --from-code=UTF-8 --no-location --debug --boost --no-wrap -f "%filtered_list%" -o "%generated_pot%"
+        .\tools\xgettext.exe --keyword=L --keyword=_L --keyword=_u8L --keyword=PLUGIN_U8L --keyword=L_CONTEXT:1,2c --keyword=_L_CONTEXT:1,2c --keyword=_u8L_CONTEXT:1,2c --keyword=_L_PLURAL:1,2 --add-comments=TRN --from-code=UTF-8 --no-location --debug --boost --no-wrap -f "%filtered_list%" -o "%generated_pot%"
         if errorlevel 1 (
             set "script_exit_code=1"
         ) else (

scripts/run_gettext.sh

@@ -85,7 +85,7 @@ if $FULL_MODE; then
         generated_pot_file="${generated_i18n_dir}/OrcaSlicer.pot"
 
         mkdir -p "$generated_i18n_dir"
-        xgettext --keyword=L --keyword=_L --keyword=_u8L --keyword=L_CONTEXT:1,2c --keyword=_L_CONTEXT:1,2c --keyword=_u8L_CONTEXT:1,2c --keyword=_L_PLURAL:1,2 --add-comments=TRN --from-code=UTF-8 --no-location --debug --boost --no-wrap -f "$filtered_list" -o "$generated_pot_file"
+        xgettext --keyword=L --keyword=_L --keyword=_u8L --keyword=PLUGIN_U8L --keyword=L_CONTEXT:1,2c --keyword=_L_CONTEXT:1,2c --keyword=_u8L_CONTEXT:1,2c --keyword=_L_PLURAL:1,2 --add-comments=TRN --from-code=UTF-8 --no-location --debug --boost --no-wrap -f "$filtered_list" -o "$generated_pot_file"
         python3 scripts/HintsToPot.py ./resources "$generated_i18n_dir"
 
         if [ -f "$pot_file" ] && files_equal_ignoring_pot_date "$pot_file" "$generated_pot_file"; then

src/slic3r/CMakeLists.txt

@@ -707,6 +707,10 @@ set(SLIC3R_GUI_SOURCES
     plugin/PluginManager.hpp
     plugin/PluginAuditManager.cpp
     plugin/PluginAuditManager.hpp
+    plugin/PluginAuditManagerGui.cpp
+    plugin/PluginAuditManagerInternal.hpp
+    plugin/PluginModule.cpp
+    plugin/PluginText.hpp
     plugin/PluginResolver.cpp
     plugin/PluginResolver.hpp
     plugin/pluginTypes/printerAgent/PrinterAgentPluginCapability.hpp
@@ -1092,3 +1096,61 @@ if (ORCA_BUILD_PYTHON_STUBGEN_MODULE)
         PREFIX ""
     )
 endif()
+
+# Headless plugin permission probe. A distinct executable so normal GUI loading and prompt
+# behavior stay untouched. It compiles the GUI-free plugin sources directly instead of linking
+# libslic3r_gui, so neither the GUI library nor wx is pulled into the probe. The permission
+# front end is selected by source composition: PluginAuditManagerGui.cpp for the GUI app and
+# probe/PluginAuditManagerHeadless.cpp here.
+#
+# Residual cost: the probe still links libslic3r (the large core library) for Utils,
+# LifecycleEvents, the model/print types used by the GUI-free host bindings and libslic3r's own
+# transitive dependencies. It does not link libslic3r_gui, wx or the GUI-only host/plugin sources.
+# Developer/security-analysis tool, so it is off by default.
+if (ORCA_BUILD_PLUGIN_PERMISSION_PROBE)
+    add_executable(orca-plugin-probe
+        plugin/PluginPermissionProbe.cpp
+        plugin/PluginProbeCollector.hpp
+        plugin/probe/NanoSvgImplementation.cpp
+        plugin/PluginAuditManager.cpp
+        plugin/PluginAuditManagerInternal.hpp
+        plugin/PluginModule.cpp
+        plugin/PluginText.hpp
+        plugin/probe/PluginAuditManagerHeadless.cpp
+        plugin/PluginFsUtils.cpp
+        plugin/PluginLoader.cpp
+        plugin/PythonInterpreter.cpp
+        plugin/PythonPluginBridge.cpp
+        plugin/probe/PluginHostProbe.cpp
+        plugin/probe/PluginProbeConfig.cpp
+        plugin/host/PluginHostGeometry.cpp
+        plugin/host/PluginHostMesh.cpp
+        plugin/host/PluginHostModel.cpp
+        plugin/host/PluginHostSlicing.cpp
+        plugin/pluginTypes/printerAgent/PrinterAgentPluginCapability.cpp
+        plugin/pluginTypes/pages/PagesPluginCapability.cpp
+        plugin/pluginTypes/resourceTexture/ResourceTexturePluginCapability.cpp
+        plugin/pluginTypes/script/ScriptPluginCapability.cpp
+        plugin/pluginTypes/slicingPipeline/SlicingPipelinePluginCapability.cpp
+    )
+
+    target_compile_definitions(orca-plugin-probe PRIVATE ORCA_PLUGIN_PROBE_BUILD)
+
+    target_include_directories(orca-plugin-probe PRIVATE
+        ${CMAKE_CURRENT_SOURCE_DIR}
+        ${CMAKE_CURRENT_BINARY_DIR}
+        ${CMAKE_SOURCE_DIR}/src
+        Utils
+    )
+
+    target_link_libraries(orca-plugin-probe PRIVATE
+        libslic3r
+        nanosvg
+        pybind11::embed
+    )
+
+    set_target_properties(orca-plugin-probe PROPERTIES
+        OUTPUT_NAME orca-plugin-probe
+        FOLDER "tools"
+    )
+endif()

src/slic3r/plugin/PluginAuditManager.cpp

@@ -1,42 +1,27 @@
 #include "PluginAuditManager.hpp"
+#include "PluginAuditManagerInternal.hpp"
 
 #include "../Utils/OrcaCloudServiceAgent.hpp"
 #include "libslic3r/Utils.hpp"
 #include "libslic3r/libslic3r.h" // GCODEVIEWER_APP_KEY, and SLIC3R_APP_KEY via libslic3r_version.h
 #include "libslic3r_version.h"
 
-#include <boost/algorithm/string/case_conv.hpp>
 #include <boost/algorithm/string/predicate.hpp>
-#include <boost/algorithm/string/trim.hpp>
 #include <boost/filesystem/path.hpp>
 #include <boost/filesystem/operations.hpp>
 #include <boost/log/trivial.hpp>
-#include <boost/system/error_code.hpp>
 
 #include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstddef>
 #include <cstdlib>
-#include <future>
 #include <mutex>
-#include <memory>
-#include <slic3r/GUI/BindDialog.hpp>
-#include <slic3r/GUI/GUI_App.hpp>
-#include <slic3r/plugin/PluginFsUtils.hpp>
-#include <slic3r/plugin/PluginManager.hpp>
 #include <string>
 #include <unordered_map>
 #include <unordered_set>
 #include <utility>
 #include <vector>
-#include <wx/app.h>
-#include <wx/event.h>
-#include <wx/msgdlg.h>
-#include <wx/string.h>
-#include <wx/thread.h>
-#include "slic3r/GUI/I18N.hpp"
-#include "slic3r/plugin/PluginDescriptor.hpp"
 #include <Python.h>
 
 namespace Slic3r {
@@ -164,182 +149,10 @@ static bool is_fs_category(AuditEventCategory category)
     }
 }
 
-// HTTP and raw-socket events are governed by the same network permission: a declared host may be
-// reached through either layer, and the layers nest for one plugin action (urllib -> http.client
-// -> socket).
-static bool is_network_category(AuditEventCategory category)
-{
-    return category == AuditEventCategory::Http || category == AuditEventCategory::Socket;
-}
-
-// ---------------------------------------------------------------------------
-// Network permission identity
-// ---------------------------------------------------------------------------
-
-static std::string ascii_lower(std::string value)
-{
-    boost::algorithm::to_lower(value);
-    return value;
-}
-
-static std::string trim_ascii_space(std::string value)
-{
-    boost::algorithm::trim(value);
-    return value;
-}
-
-// Canonical storage keeps IPv6 literals bracketed (https://[::1]), while a socket address
-// exposes the bare literal (::1). Compare them without the brackets.
-static std::string without_ipv6_brackets(std::string host)
-{
-    if (host.size() >= 2 && host.front() == '[' && host.back() == ']')
-        host = host.substr(1, host.size() - 2);
-    return host;
-}
-
-// Returns the host part of a URL authority, dropping userinfo and port. IPv6 literals keep their
-// brackets so that a URL and a bare address compare consistently.
-static std::string host_from_authority(std::string authority)
-{
-    const size_t at = authority.rfind('@');
-    if (at != std::string::npos)
-        authority.erase(0, at + 1);
-
-    if (authority.empty())
-        return {};
-
-    if (authority.front() == '[') {
-        const size_t close = authority.find(']');
-        if (close == std::string::npos)
-            return {};
-        authority.erase(close + 1);
-        return ascii_lower(authority);
-    }
-
-    const size_t colon = authority.find(':');
-    if (colon != std::string::npos)
-        authority.erase(colon);
-
-    if (authority.find_first_of(" \t\r\n/?#@") != std::string::npos)
-        return {};
-
-    return ascii_lower(authority);
-}
-
-// Extracts a host from a target that is not a URL: "host", "host:443", "[::1]:443", "('host',
-// 443)" (the form older releases persisted for socket address events), or "'host'".
-static std::string network_host_from_target(const std::string& target)
-{
-    std::string value = trim_ascii_space(target);
-    if (value.empty())
-        return {};
-
-    if (value.front() == '(') {
-        // Legacy persisted address tuple: ("host", 443) or ("host", 443, 0, 0).
-        const size_t quote = value.find_first_of("'\"");
-        if (quote != std::string::npos) {
-            const char   delimiter = value[quote];
-            const size_t end       = value.find(delimiter, quote + 1);
-            if (end == std::string::npos)
-                return {};
-            value = value.substr(quote + 1, end - quote - 1);
-        } else {
-            value = value.substr(1);
-            const size_t comma = value.find(',');
-            if (comma != std::string::npos)
-                value.erase(comma);
-        }
-    } else if (value.front() == '[') {
-        const size_t close = value.find(']');
-        if (close == std::string::npos)
-            return {};
-        value.erase(close + 1);
-    } else {
-        // Strip a ":port" suffix, but leave a bare IPv6 literal ("::1") intact.
-        const size_t colon = value.find(':');
-        if (colon != std::string::npos && value.find(':', colon + 1) == std::string::npos)
-            value.erase(colon);
-    }
-
-    value = trim_ascii_space(value);
-    if (value.empty() || value.find_first_of(" \t\r\n/?#@") != std::string::npos)
-        return {};
-
-    return ascii_lower(value);
-}
-
-std::string PluginAuditManager::normalize_network_url(const std::string& url)
-{
-    const size_t scheme_end = url.find("://");
-    if (scheme_end == std::string::npos || scheme_end == 0)
-        return {};
-
-    const std::string scheme = ascii_lower(url.substr(0, scheme_end));
-    if (scheme != "http" && scheme != "https")
-        return {};
-
-    const size_t authority_start = scheme_end + 3;
-    const size_t authority_end   = url.find_first_of("/?#", authority_start);
-    const std::string authority  = url.substr(authority_start, authority_end == std::string::npos
-                                                                    ? std::string::npos
-                                                                    : authority_end - authority_start);
-
-    const std::string host = host_from_authority(authority);
-    if (host.empty())
-        return {};
-
-    return scheme + "://" + host;
-}
-
-bool PluginAuditManager::network_permission_matches(const std::vector<std::string>& granted,
-                                                    const std::string&              target)
-{
-    if (target.empty())
-        return false;
-
-    const bool        target_is_url = target.find("://") != std::string::npos;
-    const std::string target_url    = normalize_network_url(target);
-    if (target_is_url && target_url.empty()) {
-        // A non-http(s) URL has no network identity we can generalize; only an exact grant
-        // recorded by an earlier approval stays valid, so an unrelated scheme never matches.
-        return std::find(granted.begin(), granted.end(), target) != granted.end();
-    }
-
-    const std::string target_host =
-        target_is_url ? std::string{} : without_ipv6_brackets(network_host_from_target(target));
-    if (!target_is_url && target_host.empty())
-        return false;
-
-    for (const std::string& entry : granted) {
-        // Preserve an exact grant recorded by an older release, e.g. a full URL with a query.
-        if (entry == target)
-            return true;
-
-        const std::string entry_url = normalize_network_url(entry);
-        if (target_is_url) {
-            // Canonical scheme://host grants are host-wide. Older grants that persisted a full
-            // URL remain scoped to that exact URL, preserving the operation-root URL check.
-            if (!entry_url.empty() && entry_url == entry && entry_url == target_url)
-                return true;
-            continue;
-        }
-
-        if (!entry_url.empty()) {
-            // Bare hosts carry no scheme: match the host part of a scheme://host grant.
-            const std::string entry_host = entry_url.substr(entry_url.find("://") + 3);
-            if (without_ipv6_brackets(entry_host) == target_host)
-                return true;
-        } else if (without_ipv6_brackets(network_host_from_target(entry)) == target_host) {
-            // Legacy persisted address tuples, e.g. "('host', 443)".
-            return true;
-        }
-    }
-
-    return false;
-}
+namespace plugin_audit {
 
 // The category's name in a saved event grant, e.g. "FsRead" in "FsRead:open".
-static const char* category_name(AuditEventCategory category)
+const char* category_name(AuditEventCategory category)
 {
     switch (category) {
     case AuditEventCategory::FsRead:         return "FsRead";
@@ -356,6 +169,29 @@ static const char* category_name(AuditEventCategory category)
     return "None";
 }
 
+int report_denied(PluginAuditManager&       mgr,
+                  const std::string&        event_name,
+                  const AuditDecision&      decision,
+                  const std::string&        target)
+{
+    AuditViolation violation;
+    violation.plugin_key = mgr.current_plugin();
+    violation.event_name = event_name;
+    violation.reason     = decision.reason;
+    mgr.report_violation(violation);
+
+    std::string message = "Plugin attempted audited operation \"" + event_name + "\" without permission";
+    if (!decision.reason.empty())
+        message += ": " + decision.reason;
+    if (!target.empty())
+        message += ": " + target;
+
+    PyErr_SetString(PyExc_PermissionError, message.c_str());
+    return -1;
+}
+
+} // namespace plugin_audit
+
 // ---------------------------------------------------------------------------
 // Path safety
 // ---------------------------------------------------------------------------
@@ -424,6 +260,7 @@ bool is_inside_allowed_root(const boost::filesystem::path& candidate, const boos
 
 thread_local std::string PluginAuditManager::m_current_plugin_key = "";
 thread_local std::string PluginAuditManager::m_current_capability_name = "";
+thread_local std::string PluginAuditManager::m_current_audit_phase = "";
 thread_local std::vector<AllowedRoot> PluginAuditManager::m_scoped_allowed_roots;
 thread_local std::vector<PyObject*> PluginAuditManager::m_root_frames;
 thread_local int PluginAuditManager::m_releasing_frames = 0;
@@ -493,6 +330,76 @@ std::string PluginAuditManager::current_capability() const { return m_current_ca
 
 void PluginAuditManager::clear_current_capability() { m_current_capability_name.clear(); }
 
+void PluginAuditManager::set_current_audit_phase(const std::string& phase) { m_current_audit_phase = phase; }
+
+const std::string& PluginAuditManager::current_audit_phase() const { return m_current_audit_phase; }
+
+void PluginAuditManager::clear_current_audit_phase() { m_current_audit_phase.clear(); }
+
+void PluginAuditManager::set_observation_observer(AuditObserver observer)
+{
+    std::lock_guard<std::mutex> lock(m_observer_mutex);
+    m_observation_observer = std::move(observer);
+}
+
+void PluginAuditManager::clear_observation_observer()
+{
+    std::lock_guard<std::mutex> lock(m_observer_mutex);
+    m_observation_observer = nullptr;
+}
+
+bool PluginAuditManager::observation_mode() const
+{
+    std::lock_guard<std::mutex> lock(m_observer_mutex);
+    return static_cast<bool>(m_observation_observer);
+}
+
+// The audit hook holds the GIL here. Copy the observer out before invoking it so a callback that
+// reads the manager cannot deadlock on m_observer_mutex.
+bool PluginAuditManager::record_observation(const std::string&              event_name,
+                                            const std::string&              category,
+                                            const std::vector<std::string>& targets)
+{
+    AuditObserver observer;
+    {
+        std::lock_guard<std::mutex> lock(m_observer_mutex);
+        observer = m_observation_observer;
+    }
+    if (!observer)
+        return false;
+
+    // The observer is called from a CPython C callback; a C++ exception must not unwind through
+    // the audit hook. The probe's collector only allocates, so a throw here is a lost observation,
+    // not a reason to abort the audited operation.
+    try {
+        AuditObservation observation;
+        observation.plugin_key = m_current_plugin_key;
+        observation.capability = m_current_capability_name;
+        observation.phase      = m_current_audit_phase;
+        observation.event_name = event_name;
+        observation.category   = category;
+        observation.targets    = targets;
+        // Probe mode never denies: the hook returns 0 after recording. A later failure of the
+        // surrounding Python operation is reported by the probe's callback/load result, not here.
+        observation.continued = true;
+        observer(observation);
+    } catch (...) {
+    }
+    return true;
+}
+
+ScopedPluginAuditPhase::ScopedPluginAuditPhase(std::string phase)
+    : m_phase(std::move(phase))
+    , m_previous_phase(PluginAuditManager::instance().current_audit_phase())
+{
+    PluginAuditManager::instance().set_current_audit_phase(m_phase);
+}
+
+ScopedPluginAuditPhase::~ScopedPluginAuditPhase()
+{
+    PluginAuditManager::instance().set_current_audit_phase(m_previous_phase);
+}
+
 void PluginAuditManager::add_global_allowed_root(const boost::filesystem::path& root, bool allow_write)
 {
     if (root.empty())
@@ -530,16 +437,18 @@ void PluginAuditManager::add_denied_filename(const std::string& filename)
 std::vector<std::string> PluginAuditManager::default_denied_filenames()
 {
     // AppConfig::config_path() picks .conf vs .ini on the USE_JSON_CONFIG ifdef and the app key
-    // on its mode, and is a non-static member we cannot call without an instance.  Denying all
+    // on its mode, and is a non-static member we cannot call without an instance. Denying all
     // four names is cheaper and more robust than replicating that; the two unused names cost one
-    // string comparison each.  Single-sourced here so install_hook() and the tests seed from the
-    // same list and cannot drift apart.
+    // string comparison each. Keep the plugin install-state sidecar here too: it controls which
+    // packages load on startup and must remain host-managed. Single-sourced so install_hook() and
+    // the tests seed from the same list and cannot drift apart.
     return {
         SLIC3R_APP_KEY ".conf",
         GCODEVIEWER_APP_KEY ".conf",
         SLIC3R_APP_KEY ".ini",
         GCODEVIEWER_APP_KEY ".ini",
         secret_constants::USER_SECRET_FILENAME,
+        ".install_state.json",
     };
 }
 
@@ -705,132 +614,20 @@ AuditDecision PluginAuditManager::check_open(const std::string& path_str, const
     return check_path_access(boost::filesystem::path(path_str), is_write);
 }
 
-namespace {
-
-// Builds and shows the modal confirmation. Must run on the GUI thread.
-bool show_permission_dialog(const wxString& message, const wxString& title)
-{
-    wxMessageDialog dialog(nullptr, message, title, wxYES_NO | wxICON_WARNING);
-    return dialog.ShowModal() == wxID_YES;
-}
-
-// Shows a permission prompt on the GUI thread and waits for the answer. The caller may be the
-// plugin-load worker, so off the main thread the dialog is marshaled with CallAfter.
-bool ask_permission(const wxString& message)
-{
-    if (wxTheApp == nullptr || GUI::wxGetApp().is_closing())
-        return false;
-
-    if (wxIsMainThread())
-        return show_permission_dialog(message, _L("Plugin permissions"));
-
-    auto result = std::make_shared<std::promise<bool>>();
-    auto future = result->get_future();
-    GUI::wxGetApp().CallAfter([result, message]() {
-        if (wxTheApp == nullptr || GUI::wxGetApp().is_closing()) {
-            result->set_value(false);
-            return;
-        }
-        result->set_value(show_permission_dialog(message, _L("Plugin permissions")));
-    });
-    return future.get();
-}
-
-} // namespace
-
 bool PluginAuditManager::request_filesystem_read_permissions(const std::string&              plugin_key,
                                                               const std::vector<std::string>& paths)
 {
     if (plugin_key.empty() || paths.empty())
         return true;
 
-    PluginDescriptor descriptor;
-    if (!PluginManager::instance().try_get_plugin_descriptor(plugin_key, descriptor) || descriptor.plugin_root.empty())
-        return false;
-
-    PluginInstallState state;
-    read_install_state(boost::filesystem::path(descriptor.plugin_root), state);
-
-    std::vector<std::string> missing;
-    for (const std::string& path : paths) {
-        if (std::find(state.permissions.fs_read.begin(), state.permissions.fs_read.end(), path) == state.permissions.fs_read.end())
-            missing.push_back(path);
-    }
-    if (missing.empty())
+    // Probe mode records the declaration and proceeds. It must not consult the install state,
+    // open the permission dialog, or persist a grant.
+    if (observation_mode()) {
+        record_observation("orca.request_permissions", "FsRead", paths);
         return true;
-
-    wxString requested_paths;
-    for (const std::string& path : missing)
-        requested_paths += wxString::FromUTF8(path.c_str()) + "\n";
-
-    if (!ask_permission(wxString::Format(_L("Plugin \"%s\" requests filesystem read access to:\n%s"),
-                                        wxString::FromUTF8(descriptor.name.c_str()), requested_paths)))
-        return false;
-
-    seed_install_metadata(state, descriptor);
-
-    state.permissions.fs_read.insert(state.permissions.fs_read.end(), missing.begin(), missing.end());
-    return write_install_state(boost::filesystem::path(descriptor.plugin_root), state);
-}
-
-bool PluginAuditManager::request_network_permissions(const std::string&              plugin_key,
-                                                      const std::vector<std::string>& urls)
-{
-    if (plugin_key.empty() || urls.empty())
-        return true;
-
-    PluginDescriptor descriptor;
-    if (!PluginManager::instance().try_get_plugin_descriptor(plugin_key, descriptor) || descriptor.plugin_root.empty())
-        return false;
-
-    // Reduce every request to scheme://host before comparing or persisting it, so a URL with a
-    // path or query cannot create a second grant for the same host.
-    std::vector<std::string> requested;
-    for (const std::string& url : urls) {
-        const std::string normalized = normalize_network_url(url);
-        if (normalized.empty()) {
-            BOOST_LOG_TRIVIAL(warning) << "[AUDIT] Invalid network permission request for plugin " << plugin_key << ": " << url;
-            return false;
-        }
-        if (std::find(requested.begin(), requested.end(), normalized) == requested.end())
-            requested.push_back(normalized);
     }
 
-    PluginInstallState state;
-    read_install_state(boost::filesystem::path(descriptor.plugin_root), state);
-
-    std::vector<std::string> missing;
-    for (const std::string& entry : requested) {
-        if (!network_permission_matches(state.permissions.network_http, entry) &&
-            !network_permission_matches(state.permissions.network_socket, entry))
-            missing.push_back(entry);
-    }
-    if (missing.empty())
-        return true;
-
-    wxString requested_hosts;
-    for (const std::string& entry : missing)
-        requested_hosts += wxString::FromUTF8(entry.c_str()) + "\n";
-
-    if (!ask_permission(wxString::Format(_L("Plugin \"%s\" requests network access to:\n%s"),
-                                        wxString::FromUTF8(descriptor.name.c_str()), requested_hosts)))
-        return false;
-
-    seed_install_metadata(state, descriptor);
-
-    // A declared host is reachable through both HTTP and raw socket events. Recording the grant in
-    // both existing lists keeps the sidecar self-describing and means either event layer matches
-    // it without relying on the other list.
-    for (const std::string& entry : missing) {
-        if (std::find(state.permissions.network_http.begin(), state.permissions.network_http.end(), entry) ==
-            state.permissions.network_http.end())
-            state.permissions.network_http.push_back(entry);
-        if (std::find(state.permissions.network_socket.begin(), state.permissions.network_socket.end(), entry) ==
-            state.permissions.network_socket.end())
-            state.permissions.network_socket.push_back(entry);
-    }
-
-    return write_install_state(boost::filesystem::path(descriptor.plugin_root), state);
+    return plugin_audit::request_filesystem_read_permissions(plugin_key, paths);
 }
 
 void PluginAuditManager::report_violation(const AuditViolation& violation)
@@ -875,39 +672,6 @@ PyObject* tuple_item(PyObject* args, Py_ssize_t index)
     return PyTuple_GET_ITEM(args, index);
 }
 
-std::string python_unicode(PyObject* object)
-{
-    if (!object || !PyUnicode_Check(object))
-        return {};
-    const char* text = PyUnicode_AsUTF8(object);
-    if (!text) {
-        PyErr_Clear();
-        return {};
-    }
-    return text;
-}
-
-// Converts a str/bytes leaf to text, clearing a failed conversion. Returns false when `object` is
-// neither str nor bytes, so callers can apply their own fallback.
-bool python_text(PyObject* object, std::string& out)
-{
-    if (PyUnicode_Check(object)) {
-        out = python_unicode(object);
-        return true;
-    }
-    if (PyBytes_Check(object)) {
-        const char* value = PyBytes_AsString(object);
-        if (!value) {
-            PyErr_Clear();
-            out.clear();
-            return true;
-        }
-        out = value;
-        return true;
-    }
-    return false;
-}
-
 std::string python_path(PyObject* object)
 {
     if (!object)
@@ -919,12 +683,26 @@ std::string python_path(PyObject* object)
         return {};
     }
 
-    std::string result;
-    python_text(path_object, result);
+    const char* path = PyUnicode_Check(path_object) ? PyUnicode_AsUTF8(path_object) : PyBytes_AsString(path_object);
+    std::string result = path ? path : "";
     Py_DECREF(path_object);
+    if (!path)
+        PyErr_Clear();
     return result;
 }
 
+std::string python_unicode(PyObject* object)
+{
+    if (!object || !PyUnicode_Check(object))
+        return {};
+    const char* text = PyUnicode_AsUTF8(object);
+    if (!text) {
+        PyErr_Clear();
+        return {};
+    }
+    return text;
+}
+
 std::string python_str(PyObject* object)
 {
     if (!object)
@@ -1111,247 +889,18 @@ std::vector<std::string> audit_targets(const std::string& event_name, AuditEvent
     return targets;
 }
 
-// The saved list that grants an event: its category's target list, or the event-grant list for
-// an event with no target. Kept apart, so that no grant doubles as a target of the same name (an
-// os.fork grant is not an os.exec of a command named "os.fork").
-std::vector<std::string>* permission_list_for(AuditEventCategory category, bool by_event, PluginPermissions& permissions)
-{
-    if (by_event)
-        return &permissions.events;
-
-    switch (category) {
-    case AuditEventCategory::FsRead:        return &permissions.fs_read;
-    case AuditEventCategory::FsReadWrite:   return &permissions.fs_readwrite;
-    case AuditEventCategory::Http:          return &permissions.network_http;
-    case AuditEventCategory::Socket:        return &permissions.network_socket;
-    case AuditEventCategory::ProcessCreate: return &permissions.process;
-    case AuditEventCategory::Threading:     return &permissions.threading;
-    case AuditEventCategory::ProcessReplace: return &permissions.process;
-    default:                                return nullptr;
-    }
-}
-
-// An event with no target is granted by its effective category and name, e.g. "FsRead:open"
-// for a read of a file descriptor, which does not grant a write of one ("FsReadWrite:open").
-std::string event_grant_key(AuditEventCategory category, const std::string& event_name)
-{
-    return std::string(category_name(category)) + ":" + event_name;
-}
-
-bool has_permission(const std::vector<std::string>& granted, const std::string& target)
-{
-    return std::find(granted.begin(), granted.end(), target) != granted.end();
-}
-
-// A declared or previously approved network grant may live in either network list: an HTTP grant
-// covers the sockets the same request opens, and a raw socket grant covers a later HTTP call to
-// the same host.
-bool has_network_permission(const PluginPermissions& permissions, const std::string& target)
-{
-    return PluginAuditManager::network_permission_matches(permissions.network_http, target) ||
-           PluginAuditManager::network_permission_matches(permissions.network_socket, target);
-}
-
-bool has_any_network_permission(const PluginPermissions& permissions)
-{
-    return !permissions.network_http.empty() || !permissions.network_socket.empty();
-}
-
-bool persist_permission(const std::string&        plugin_key,
-                        PluginInstallState&       state,
-                        std::vector<std::string>& permission_list,
-                        const std::string&        target)
-{
-    PluginDescriptor descriptor;
-    if (!PluginManager::instance().try_get_plugin_descriptor(plugin_key, descriptor) || descriptor.plugin_root.empty())
-        return false;
-
-    seed_install_metadata(state, descriptor);
-
-    if (!has_permission(permission_list, target))
-        permission_list.push_back(target);
-    return write_install_state(boost::filesystem::path(descriptor.plugin_root), state);
-}
-
-int report_denied(PluginAuditManager&            mgr,
-                  const std::string&             event_name,
-                  const AuditDecision&           decision,
-                  const std::string&             target = {})
-{
-    AuditViolation violation;
-    violation.plugin_key = mgr.current_plugin();
-    violation.event_name = event_name;
-    violation.reason     = decision.reason;
-    mgr.report_violation(violation);
-
-    std::string message = "Plugin attempted audited operation \"" + event_name + "\" without permission";
-    if (!decision.reason.empty())
-        message += ": " + decision.reason;
-    if (!target.empty())
-        message += ": " + target;
-
-    PyErr_SetString(PyExc_PermissionError, message.c_str());
-    return -1;
-}
-
-wxString audit_message(AuditEventCategory category, const wxString& plugin_name, const wxString& event_name,
-                       const wxString& target_list, size_t target_count)
-{
-    if (target_list.IsEmpty())
-        return wxString::Format(
-            _L("Plugin \"%s\" is requesting permission for the Python audit event \"%s\".\n\n"
-                "This operation does not expose a target the audit hook can display."),
-            plugin_name, event_name);
-
-    switch (category) {
-    case AuditEventCategory::FsRead:
-        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to read the following file:\n%s",
-                                          "Plugin \"%s\" is requesting to read the following files:\n%s", target_count),
-                                plugin_name, target_list);
-    case AuditEventCategory::FsReadWrite:
-        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to read/write the following file:\n%s",
-                                          "Plugin \"%s\" is requesting to read/write the following files:\n%s", target_count),
-                                plugin_name, target_list);
-    case AuditEventCategory::FsCreate:
-        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to create the following file:\n%s",
-                                          "Plugin \"%s\" is requesting to create the following files:\n%s", target_count),
-                                plugin_name, target_list);
-    case AuditEventCategory::FsDelete:
-        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to delete the following file:\n%s",
-                                          "Plugin \"%s\" is requesting to delete the following files:\n%s", target_count),
-                                plugin_name, target_list);
-    case AuditEventCategory::Http:
-        return wxString::Format(_L("Plugin \"%s\" is requesting to make an HTTP request to:\n%s"), plugin_name, target_list);
-    case AuditEventCategory::Socket:
-        return wxString::Format(_L("Plugin \"%s\" is requesting to open a network connection to:\n%s"), plugin_name, target_list);
-    case AuditEventCategory::ProcessCreate:
-        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to run the following command:\n%s",
-                                          "Plugin \"%s\" is requesting to run the following commands:\n%s", target_count),
-                                plugin_name, target_list);
-    case AuditEventCategory::Threading:
-        return wxString::Format(_L("Plugin \"%s\" is requesting permission to create a thread."), plugin_name);
-    case AuditEventCategory::ProcessReplace:
-        return wxString::Format(_L("Plugin \"%s\" is requesting to replace the running application with:\n%s"), plugin_name, target_list);
-    default:
-        return wxString::Format(_L("Plugin \"%s\" is requesting permission for the Python audit event \"%s\"."), plugin_name, event_name);
-    }
-}
-
-// Builds and shows the modal permission prompt. Must run on the GUI thread.
-bool prompt_for_targets(AuditEventCategory category, const std::string& plugin_name, const std::string& event_name,
-                        const std::vector<std::string>& unresolved)
-{
-    wxString target_list;
-    for (const auto& target : unresolved)
-        target_list += wxString::FromUTF8(target.c_str()) + "\n";
-
-    return show_permission_dialog(
-        audit_message(category, wxString::FromUTF8(plugin_name.c_str()), wxString::FromUTF8(event_name.c_str()),
-                      target_list, unresolved.size()),
-        _L("Plugin permission request"));
-}
-
-// Records a grant in the plugin's sidecar so it is not asked again. Reads the install state
-// freshly because the async prompt outlives the caller's stack copy of it.
-void persist_grant(const std::string& plugin_key, AuditEventCategory category, bool by_event, const std::vector<std::string>& keys)
-{
-    PluginInstallState state;
-    if (!PluginManager::instance().get_install_state(plugin_key, state))
-        return;
-
-    std::vector<std::string>* permission_list = permission_list_for(category, by_event, state.permissions);
-    if (!permission_list)
-        return;
-
-    for (const auto& key : keys)
-        persist_permission(plugin_key, state, *permission_list, key);
-}
-
-static PluginAuditManager::PermissionPrompt s_permission_prompt_for_testing;
-
-// Asks the user to grant an audited event, returning true when they approve an inline prompt.
-// `keys` are what a Yes saves: the unresolved targets, or the event-grant key when the event has
-// no target (by_event), which the prompt does not show as a target.
-//
-// An audited event can fire on a thread the UI thread may itself be blocked waiting on: the
-// SlicingPipeline hook runs on the slicing worker thread (see PluginHooks.cpp), and
-// BackgroundSlicingProcess::stop()/stop_internal() park the UI thread until that worker stops.
-// Blocking the worker on a marshaled modal -- which is safe for the plugin-load worker that
-// request_filesystem_read_permissions runs on -- would therefore deadlock the application (the
-// invariant PluginHostUi.cpp documents for slicing-hook UI calls). Off the main thread the prompt
-// is therefore posted asynchronously and the current event denied (fail closed, like an unanswered
-// prompt); the grant is persisted once the user accepts, so a later attempt succeeds without
-// re-prompting.
-bool request_permission(AuditEventCategory category, const std::string& plugin_key, const std::string& plugin_name,
-                        const std::string& event_name, bool by_event, const std::vector<std::string>& keys)
-{
-    const std::vector<std::string> shown = by_event ? std::vector<std::string>{} : keys;
-
-    if (s_permission_prompt_for_testing)
-        return s_permission_prompt_for_testing(event_name, shown);
-
-    if (wxTheApp == nullptr || GUI::wxGetApp().is_closing())
-        return false;
-
-    if (wxIsMainThread())
-        return prompt_for_targets(category, plugin_name, event_name, shown);
-
-    GUI::wxGetApp().CallAfter([category, plugin_key, plugin_name, event_name, by_event, keys, shown]() {
-        if (wxTheApp == nullptr || GUI::wxGetApp().is_closing())
-            return;
-        if (prompt_for_targets(category, plugin_name, event_name, shown))
-            persist_grant(plugin_key, category, by_event, keys);
-    });
-    return false;
-}
-
-// Decides an event that no allowed root or running operation covers: a saved grant allows it,
-// otherwise the user is asked and a Yes is saved.
-int decide_audited_event(PluginAuditManager&             mgr,
-                         PluginInstallState&              state,
-                         const std::string&                plugin_key,
-                         const std::string&                plugin_name,
-                         const std::string&                event_name,
-                         AuditEventCategory                category,
-                         const std::vector<std::string>&   targets)
-{
-    const bool                     by_event = targets.empty();
-    const std::vector<std::string> keys     = by_event ? std::vector<std::string>{event_grant_key(category, event_name)} : targets;
-    std::vector<std::string>*      permission_list = permission_list_for(category, by_event, state.permissions);
-
-    std::vector<std::string> unresolved = keys;
-    if (permission_list || is_network_category(category)) {
-        unresolved.clear();
-        for (const auto& key : keys)
-            if (!(permission_list && has_permission(*permission_list, key)) &&
-                !(is_network_category(category) &&
-                  (by_event ? has_any_network_permission(state.permissions)
-                            : has_network_permission(state.permissions, key))))
-                unresolved.push_back(key);
-        if (unresolved.empty())
-            return 0;
-    }
-
-    // Letting a root frame go runs finalizers inside a scope destructor or another event's hook,
-    // where no dialog may open: what they do must already be granted.
-    if (mgr.releasing_frames())
-        return report_denied(mgr, event_name, {false, "audit permission required"});
-
-    if (!request_permission(category, plugin_key, plugin_name, event_name, by_event, unresolved))
-        return report_denied(mgr, event_name, {false, "audit permission required"});
-
-    if (permission_list)
-        for (const auto& key : unresolved)
-            persist_permission(plugin_key, state, *permission_list, key);
-    return 0;
-}
-
 // Judges an audited event raised while a plugin context is active.
 int audit_plugin_event(PluginAuditManager& mgr, const std::string& event_name, AuditEventCategory event_type, PyObject* args)
 {
     const bool                      fs_category = is_fs_category(event_type);
     const std::vector<std::string>  targets      = audit_targets(event_name, event_type, args);
 
+    // Probe mode: report the classified event and let it through. Deliberately before the deny
+    // registry and allowed-root checks, so the report covers operations that production would
+    // block as well as those it would allow. No grant is read or written.
+    if (mgr.record_observation(event_name, plugin_audit::category_name(event_type), targets))
+        return 0;
+
     // A denied path (secrets, certificates, config files -- see is_denied_path) is an
     // unconditional block: checked before the running-operation check below, so no granted
     // operation can launder access to one, and before the allowed-root shortcut further down,
@@ -1360,7 +909,7 @@ int audit_plugin_event(PluginAuditManager& mgr, const std::string& event_name, A
     if (fs_category) {
         for (const auto& target : targets) {
             if (mgr.is_denied_path(boost::filesystem::path(target)))
-                return report_denied(mgr, event_name, {false, "denied path"}, target);
+                return plugin_audit::report_denied(mgr, event_name, {false, "denied path"}, target);
         }
     }
 
@@ -1385,15 +934,7 @@ int audit_plugin_event(PluginAuditManager& mgr, const std::string& event_name, A
             return 0;
     }
 
-    PluginInstallState state;
-    const bool have_install_state = PluginManager::instance().get_install_state(mgr.current_plugin(), state);
-    if (!have_install_state) {
-        BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << " Failed to get install state for " << mgr.current_plugin();
-    }
-
-    const std::string plugin_name = state.plugin_name.empty() ? mgr.current_plugin() : state.plugin_name;
-
-    const int result = decide_audited_event(mgr, state, mgr.current_plugin(), plugin_name, event_name, event_type, targets);
+    const int result = plugin_audit::decide_event(mgr, event_name, event_type, targets);
 
     // A granted operation covers its nested events while it runs. A targetless grant names no
     // operation, so it covers nothing else.
@@ -1480,11 +1021,6 @@ void PluginAuditManager::release_frames(std::vector<PyObject*>& frames)
     PyErr_SetRaisedException(error);
 }
 
-void PluginAuditManager::set_permission_prompt_for_testing(PermissionPrompt prompt)
-{
-    PluginAuditDetail::s_permission_prompt_for_testing = std::move(prompt);
-}
-
 int PluginAuditManager::audit_hook(const char* event, PyObject* args, void* user_data)
 {
     auto* mgr = static_cast<PluginAuditManager*>(user_data);
@@ -1540,8 +1076,9 @@ void PluginAuditManager::install_hook()
     // "cert" denied-path keyword seeded below.
     add_global_allowed_root(resources_dir(), /*allow_write=*/false);
 
-    // The user's app config and cloud credentials live directly inside data_dir(), so the
-    // root just granted would otherwise expose them to any plugin.  Deny them by name.
+    // The user's app config and cloud credentials live directly inside data_dir(), and plugin
+    // install state lives beneath it, so the root just granted would otherwise expose them to
+    // plugins. Deny them by name.
     //
     // Seeded here rather than by each secret's owner because install_hook() runs during lazy
     // interpreter init and therefore provably precedes any plugin bytecode, whereas

src/slic3r/plugin/PluginAuditManager.hpp

@@ -24,6 +24,19 @@ struct AuditViolation {
     std::string            reason;
 };
 
+// One classified CPython audit event observed while the probe is in record-only mode. This is
+// evidence about the code path that ran, not a grant request: the hook allowed the operation to
+// continue and did not consult the permission dialog or the persisted install state.
+struct AuditObservation {
+    std::string              plugin_key;
+    std::string              capability;
+    std::string              phase;
+    std::string              event_name;
+    std::string              category;
+    std::vector<std::string> targets;
+    bool                     continued = true;
+};
+
 // A filesystem root a plugin may access while an audit context is active. allow_write is
 // false for a root that only grants reads (e.g. the bundled, shared resources folder) --
 // a write-shaped event never matches such a root, even though a read-shaped one does.
@@ -137,28 +150,29 @@ public:
     bool request_filesystem_read_permissions(const std::string& plugin_key,
                                              const std::vector<std::string>& paths);
 
-    // Ask the user to grant network access to the given http(s) URLs. Each URL is reduced to its
-    // scheme and host before prompting and persisting, so one approval covers every path, query
-    // and port on that host. The grant is written to both network_http and network_socket: the
-    // same declared host can surface through HTTP events (urllib/http.client) and raw socket
-    // events. Like request_filesystem_read_permissions, the request may originate on a plugin
-    // load worker; denial aborts the plugin load without adding a permission.
-    bool request_network_permissions(const std::string& plugin_key,
-                                     const std::vector<std::string>& urls);
+    // --- probe observation mode (thread-safe, never used by the GUI) ---
+    // When an observer is installed, every classified event raised by plugin-authored code is
+    // reported to it and then allowed through (the hook returns 0). The permission dialogs, saved
+    // grants and .install_state.json are never consulted, so this is not a containment boundary.
+    // The observer must not touch Python objects: it runs inside the audit hook with the GIL held.
+    using AuditObserver = std::function<void(const AuditObservation&)>;
+    void set_observation_observer(AuditObserver observer);
+    void clear_observation_observer();
+    bool observation_mode() const;
 
-    // Canonical scheme://host form used to store and match network permissions. Returns an empty
-    // string unless `url` is an absolute http(s) URL with a host. The path, query, fragment,
-    // userinfo and port are discarded; scheme and host are lowercased.
-    static std::string normalize_network_url(const std::string& url);
+    // Stop after classification/target extraction; true means an observer consumed the event.
+    // Exposed for the probe and its tests, not for production callers.
+    bool record_observation(const std::string& event_name,
+                            const std::string& category,
+                            const std::vector<std::string>& targets);
 
-    // True when a granted scheme://host entry covers `target`. `target` is a URL (urllib.Request),
-    // a bare host (http.client.connect, socket.getaddrinfo) or an address as exposed by the audit
-    // event (a hostname, a host:port pair, or a legacy persisted tuple such as "('host', 443)").
-    // URL targets must match both scheme and host. Canonical scheme://host grants cover all paths;
-    // older full-URL grants remain exact. A bare host carries no scheme, so it matches the host
-    // part of any grant; it never matches a different host.
-    static bool network_permission_matches(const std::vector<std::string>& granted,
-                                           const std::string& target);
+    // --- probe phase attribution (thread_local) ---
+    // Labels events for the probe's report. Production leaves it empty. A Python thread spawned by
+    // plugin code inherits no phase, so its events are reported as unattributed rather than being
+    // guessed at.
+    void               set_current_audit_phase(const std::string& phase);
+    const std::string& current_audit_phase() const;
+    void               clear_current_audit_phase();
 
     void report_violation(const AuditViolation& violation);
     bool audit_denial_pending() const;
@@ -201,6 +215,7 @@ private:
 
     static thread_local std::string                   m_current_plugin_key;
     static thread_local std::string                   m_current_capability_name;
+    static thread_local std::string                   m_current_audit_phase;
     static thread_local std::vector<AllowedRoot>       m_scoped_allowed_roots;
     static thread_local std::vector<PyObject*>         m_root_frames; // strong references
     static thread_local int                            m_releasing_frames;
@@ -210,10 +225,14 @@ private:
 
     // mutable: is_denied_filename() is a const query that must lock.
     mutable std::mutex m_mutex;
-
     std::vector<AllowedRoot>             m_global_allowed_roots;
     std::vector<std::string>             m_denied_filenames;
     std::vector<std::string>             m_denied_path_keywords;
+
+    // Kept apart from m_mutex: observation_mode() is queried from the audit hook while the hook
+    // already holds the GIL, and the setter runs before plugin code starts.
+    mutable std::mutex m_observer_mutex;
+    AuditObserver      m_observation_observer;
 };
 
 // RAII guard that sets the current plugin key and capability name, restoring the previous
@@ -244,6 +263,22 @@ private:
     std::vector<PyObject*>        m_previous_root_frames;
 };
 
+// Sets the probe's phase label on the current thread and restores the previous one on scope exit.
+// Empty in production, where no phase is ever set.
+class ScopedPluginAuditPhase
+{
+public:
+    explicit ScopedPluginAuditPhase(std::string phase);
+    ~ScopedPluginAuditPhase();
+
+    ScopedPluginAuditPhase(const ScopedPluginAuditPhase&)            = delete;
+    ScopedPluginAuditPhase& operator=(const ScopedPluginAuditPhase&) = delete;
+
+private:
+    std::string m_phase;
+    std::string m_previous_phase;
+};
+
 } // namespace Slic3r
 
 #endif // slic3r_PluginAuditManager_hpp_

src/slic3r/plugin/PluginAuditManagerGui.cpp

@@ -0,0 +1,332 @@
+#include "PluginAuditManagerInternal.hpp"
+
+#include "PluginDescriptor.hpp"
+#include "PluginFsUtils.hpp"
+#include "PluginManager.hpp"
+
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/path.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <algorithm>
+#include <cstddef>
+#include <future>
+#include <memory>
+#include <slic3r/plugin/PluginAuditManager.hpp>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include <slic3r/GUI/GUI_App.hpp>
+#include <slic3r/GUI/I18N.hpp>
+
+#include <wx/app.h>
+#include <wx/msgdlg.h>
+#include <wx/string.h>
+#include <wx/thread.h>
+
+namespace Slic3r {
+namespace {
+
+// The saved list that grants an event: its category's target list, or the event-grant list for
+// an event with no target. Kept apart, so that no grant doubles as a target of the same name (an
+// os.fork grant is not an os.exec of a command named "os.fork").
+std::vector<std::string>* permission_list_for(AuditEventCategory category, bool by_event, PluginPermissions& permissions)
+{
+    if (by_event)
+        return &permissions.events;
+
+    switch (category) {
+    case AuditEventCategory::FsRead:        return &permissions.fs_read;
+    case AuditEventCategory::FsReadWrite:   return &permissions.fs_readwrite;
+    case AuditEventCategory::Http:          return &permissions.network_http;
+    case AuditEventCategory::Socket:        return &permissions.network_socket;
+    case AuditEventCategory::ProcessCreate: return &permissions.process;
+    case AuditEventCategory::Threading:     return &permissions.threading;
+    case AuditEventCategory::ProcessReplace: return &permissions.process;
+    default:                                return nullptr;
+    }
+}
+
+// An event with no target is granted by its effective category and name, e.g. "FsRead:open"
+// for a read of a file descriptor, which does not grant a write of one ("FsReadWrite:open").
+std::string event_grant_key(AuditEventCategory category, const std::string& event_name)
+{
+    return std::string(plugin_audit::category_name(category)) + ":" + event_name;
+}
+
+bool has_permission(const std::vector<std::string>& granted, const std::string& target)
+{
+    return std::find(granted.begin(), granted.end(), target) != granted.end();
+}
+
+bool persist_permission(const std::string&        plugin_key,
+                        PluginInstallState&       state,
+                        std::vector<std::string>& permission_list,
+                        const std::string&        target)
+{
+    PluginDescriptor descriptor;
+    if (!PluginManager::instance().try_get_plugin_descriptor(plugin_key, descriptor) || descriptor.plugin_root.empty())
+        return false;
+
+    // A sandbox plugin may not have a sidecar yet.  Seed the small amount of install metadata
+    // needed by the writer so clicking Yes still creates the JSON file.
+    if (state.plugin_name.empty()) {
+        state.installed_from    = descriptor.is_cloud_plugin() ? "cloud" : "local";
+        state.installed_version = !descriptor.installed_version.empty() ? descriptor.installed_version : descriptor.version;
+        state.plugin_name       = descriptor.name;
+        state.cloud_uuid        = descriptor.cloud_uuid();
+        state.enabled            = true;
+    }
+
+    if (!has_permission(permission_list, target))
+        permission_list.push_back(target);
+    return write_install_state(boost::filesystem::path(descriptor.plugin_root), state);
+}
+
+wxString audit_message(AuditEventCategory category, const wxString& plugin_name, const wxString& event_name,
+                       const wxString& target_list, size_t target_count)
+{
+    if (target_list.IsEmpty())
+        return wxString::Format(
+            _L("Plugin \"%s\" is requesting permission for the Python audit event \"%s\".\n\n"
+                "This operation does not expose a target the audit hook can display."),
+            plugin_name, event_name);
+
+    switch (category) {
+    case AuditEventCategory::FsRead:
+        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to read the following file:\n%s",
+                                          "Plugin \"%s\" is requesting to read the following files:\n%s", target_count),
+                                plugin_name, target_list);
+    case AuditEventCategory::FsReadWrite:
+        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to read/write the following file:\n%s",
+                                          "Plugin \"%s\" is requesting to read/write the following files:\n%s", target_count),
+                                plugin_name, target_list);
+    case AuditEventCategory::FsCreate:
+        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to create the following file:\n%s",
+                                          "Plugin \"%s\" is requesting to create the following files:\n%s", target_count),
+                                plugin_name, target_list);
+    case AuditEventCategory::FsDelete:
+        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to delete the following file:\n%s",
+                                          "Plugin \"%s\" is requesting to delete the following files:\n%s", target_count),
+                                plugin_name, target_list);
+    case AuditEventCategory::Http:
+        return wxString::Format(_L("Plugin \"%s\" is requesting to make an HTTP request to:\n%s"), plugin_name, target_list);
+    case AuditEventCategory::Socket:
+        return wxString::Format(_L("Plugin \"%s\" is requesting to open a network connection to:\n%s"), plugin_name, target_list);
+    case AuditEventCategory::ProcessCreate:
+        return wxString::Format(_L_PLURAL("Plugin \"%s\" is requesting to run the following command:\n%s",
+                                          "Plugin \"%s\" is requesting to run the following commands:\n%s", target_count),
+                                plugin_name, target_list);
+    case AuditEventCategory::Threading:
+        return wxString::Format(_L("Plugin \"%s\" is requesting permission to create a thread."), plugin_name);
+    case AuditEventCategory::ProcessReplace:
+        return wxString::Format(_L("Plugin \"%s\" is requesting to replace the running application with:\n%s"), plugin_name, target_list);
+    default:
+        return wxString::Format(_L("Plugin \"%s\" is requesting permission for the Python audit event \"%s\"."), plugin_name, event_name);
+    }
+}
+
+// Builds and shows the modal permission prompt. Must run on the GUI thread.
+bool prompt_for_targets(AuditEventCategory category, const std::string& plugin_name, const std::string& event_name,
+                        const std::vector<std::string>& unresolved)
+{
+    wxString target_list;
+    for (const auto& target : unresolved)
+        target_list += wxString::FromUTF8(target.c_str()) + "\n";
+
+    wxMessageDialog dialog(nullptr,
+                           audit_message(category, wxString::FromUTF8(plugin_name.c_str()),
+                                        wxString::FromUTF8(event_name.c_str()), target_list, unresolved.size()),
+                           _L("Plugin permission request"), wxYES_NO | wxICON_WARNING);
+    return dialog.ShowModal() == wxID_YES;
+}
+
+// Records a grant in the plugin's sidecar so it is not asked again. Reads the install state
+// freshly because the async prompt outlives the caller's stack copy of it.
+void persist_grant(const std::string& plugin_key, AuditEventCategory category, bool by_event, const std::vector<std::string>& keys)
+{
+    PluginInstallState state;
+    if (!PluginManager::instance().get_install_state(plugin_key, state))
+        return;
+
+    std::vector<std::string>* permission_list = permission_list_for(category, by_event, state.permissions);
+    if (!permission_list)
+        return;
+
+    for (const auto& key : keys)
+        persist_permission(plugin_key, state, *permission_list, key);
+}
+
+PluginAuditManager::PermissionPrompt s_permission_prompt_for_testing;
+
+// Asks the user to grant an audited event, returning true when they approve an inline prompt.
+// `keys` are what a Yes saves: the unresolved targets, or the event-grant key when the event has
+// no target (by_event), which the prompt does not show as a target.
+//
+// An audited event can fire on a thread the UI thread may itself be blocked waiting on: the
+// SlicingPipeline hook runs on the slicing worker thread (see PluginHooks.cpp), and
+// BackgroundSlicingProcess::stop()/stop_internal() park the UI thread until that worker stops.
+// Blocking the worker on a marshaled modal -- which is safe for the plugin-load worker that
+// request_filesystem_read_permissions runs on -- would therefore deadlock the application (the
+// invariant PluginHostUi.cpp documents for slicing-hook UI calls). Off the main thread the prompt
+// is therefore posted asynchronously and the current event denied (fail closed, like an unanswered
+// prompt); the grant is persisted once the user accepts, so a later attempt succeeds without
+// re-prompting.
+bool request_permission(AuditEventCategory category, const std::string& plugin_key, const std::string& plugin_name,
+                        const std::string& event_name, bool by_event, const std::vector<std::string>& keys)
+{
+    const std::vector<std::string> shown = by_event ? std::vector<std::string>{} : keys;
+
+    if (s_permission_prompt_for_testing)
+        return s_permission_prompt_for_testing(event_name, shown);
+
+    if (wxTheApp == nullptr || GUI::wxGetApp().is_closing())
+        return false;
+
+    if (wxIsMainThread())
+        return prompt_for_targets(category, plugin_name, event_name, shown);
+
+    GUI::wxGetApp().CallAfter([category, plugin_key, plugin_name, event_name, by_event, keys, shown]() {
+        if (wxTheApp == nullptr || GUI::wxGetApp().is_closing())
+            return;
+        if (prompt_for_targets(category, plugin_name, event_name, shown))
+            persist_grant(plugin_key, category, by_event, keys);
+    });
+    return false;
+}
+
+// Decides an event that no allowed root or running operation covers: a saved grant allows it,
+// otherwise the user is asked and a Yes is saved.
+int decide_audited_event(PluginAuditManager&             mgr,
+                         PluginInstallState&              state,
+                         const std::string&                plugin_key,
+                         const std::string&                plugin_name,
+                         const std::string&                event_name,
+                         AuditEventCategory                category,
+                         const std::vector<std::string>&   targets)
+{
+    const bool                     by_event = targets.empty();
+    const std::vector<std::string> keys     = by_event ? std::vector<std::string>{event_grant_key(category, event_name)} : targets;
+    std::vector<std::string>*      permission_list = permission_list_for(category, by_event, state.permissions);
+
+    std::vector<std::string> unresolved = keys;
+    if (permission_list) {
+        unresolved.clear();
+        for (const auto& key : keys)
+            if (!has_permission(*permission_list, key))
+                unresolved.push_back(key);
+        if (unresolved.empty())
+            return 0;
+    }
+
+    // Letting a root frame go runs finalizers inside a scope destructor or another event's hook,
+    // where no dialog may open: what they do must already be granted.
+    if (mgr.releasing_frames())
+        return plugin_audit::report_denied(mgr, event_name, {false, "audit permission required"});
+
+    if (!request_permission(category, plugin_key, plugin_name, event_name, by_event, unresolved))
+        return plugin_audit::report_denied(mgr, event_name, {false, "audit permission required"});
+
+    if (permission_list)
+        for (const auto& key : unresolved)
+            persist_permission(plugin_key, state, *permission_list, key);
+    return 0;
+}
+
+} // namespace
+
+bool plugin_audit::request_filesystem_read_permissions(const std::string&              plugin_key,
+                                                       const std::vector<std::string>& paths)
+{
+    PluginDescriptor descriptor;
+    if (!PluginManager::instance().try_get_plugin_descriptor(plugin_key, descriptor) || descriptor.plugin_root.empty())
+        return false;
+
+    PluginInstallState state;
+    read_install_state(boost::filesystem::path(descriptor.plugin_root), state);
+
+    std::vector<std::string> missing;
+    for (const std::string& path : paths) {
+        if (std::find(state.permissions.fs_read.begin(), state.permissions.fs_read.end(), path) == state.permissions.fs_read.end())
+            missing.push_back(path);
+    }
+    if (missing.empty())
+        return true;
+
+    if (wxTheApp == nullptr || GUI::wxGetApp().is_closing())
+        return false;
+
+    auto show_dialog = [&descriptor, &missing]() {
+        wxString requested_paths;
+        for (const std::string& path : missing)
+            requested_paths += wxString::FromUTF8(path.c_str()) + "\n";
+
+        wxMessageDialog dialog(
+            nullptr,
+            wxString::Format(_L("Plugin \"%s\" requests filesystem read access to:\n%s"),
+                             wxString::FromUTF8(descriptor.name.c_str()), requested_paths),
+            _L("Plugin permissions"),
+            wxYES_NO | wxICON_WARNING);
+        return dialog.ShowModal() == wxID_YES;
+    };
+
+    bool granted = false;
+    if (wxIsMainThread()) {
+        granted = show_dialog();
+    } else {
+        auto result = std::make_shared<std::promise<bool>>();
+        auto future = result->get_future();
+        GUI::wxGetApp().CallAfter([result, descriptor_name = descriptor.name, missing]() {
+            wxString requested_paths;
+            for (const std::string& path : missing)
+                requested_paths += wxString::FromUTF8(path.c_str()) + "\n";
+
+            wxMessageDialog dialog(
+                nullptr,
+                wxString::Format(_L("Plugin \"%s\" requests filesystem read access to:\n%s"),
+                                 wxString::FromUTF8(descriptor_name.c_str()), requested_paths),
+                _L("Plugin permissions"),
+                wxYES_NO | wxICON_WARNING);
+            result->set_value(dialog.ShowModal() == wxID_YES);
+        });
+        granted = future.get();
+    }
+
+    if (!granted)
+        return false;
+
+    if (state.plugin_name.empty()) {
+        state.installed_from    = descriptor.is_cloud_plugin() ? "cloud" : "local";
+        state.installed_version = !descriptor.installed_version.empty() ? descriptor.installed_version : descriptor.version;
+        state.plugin_name       = descriptor.name;
+        state.cloud_uuid        = descriptor.cloud_uuid();
+        state.enabled            = true;
+    }
+
+    state.permissions.fs_read.insert(state.permissions.fs_read.end(), missing.begin(), missing.end());
+    return write_install_state(boost::filesystem::path(descriptor.plugin_root), state);
+}
+
+int plugin_audit::decide_event(PluginAuditManager&             mgr,
+                               const std::string&              event_name,
+                               AuditEventCategory              category,
+                               const std::vector<std::string>& targets)
+{
+    PluginInstallState state;
+    const bool have_install_state = PluginManager::instance().get_install_state(mgr.current_plugin(), state);
+    if (!have_install_state) {
+        BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << " Failed to get install state for " << mgr.current_plugin();
+    }
+
+    const std::string plugin_name = state.plugin_name.empty() ? mgr.current_plugin() : state.plugin_name;
+
+    return decide_audited_event(mgr, state, mgr.current_plugin(), plugin_name, event_name, category, targets);
+}
+
+void PluginAuditManager::set_permission_prompt_for_testing(PermissionPrompt prompt)
+{
+    s_permission_prompt_for_testing = std::move(prompt);
+}
+
+} // namespace Slic3r

src/slic3r/plugin/PluginAuditManagerInternal.hpp

@@ -0,0 +1,38 @@
+#ifndef slic3r_PluginAuditManagerInternal_hpp_
+#define slic3r_PluginAuditManagerInternal_hpp_
+
+// Internal seam between the GUI-free audit core and the permission front end. The GUI library
+// supplies the dialogs, prompts and .install_state.json persistence; the headless probe supplies
+// a fail-closed implementation that never links wx. Production behavior lives in the GUI
+// implementation, which is the code that used to be part of PluginAuditManager.cpp.
+
+#include "PluginAuditManager.hpp"
+
+#include <string>
+#include <vector>
+
+namespace Slic3r::plugin_audit {
+
+const char* category_name(AuditEventCategory category);
+
+int report_denied(PluginAuditManager&       mgr,
+                  const std::string&        event_name,
+                  const AuditDecision&      decision,
+                  const std::string&        target = {});
+
+// Used only when the manager is not in observation mode. The GUI implementation consults the
+// install state, prompts and persists; the probe implementation fails closed.
+bool request_filesystem_read_permissions(const std::string&              plugin_key,
+                                         const std::vector<std::string>& paths);
+
+// Decides an event that no allowed root or running operation covered. The GUI implementation
+// reads the install state and prompts; the probe implementation fails closed. In observation
+// mode the audit hook records and returns before reaching this seam.
+int decide_event(PluginAuditManager&             mgr,
+                 const std::string&              event_name,
+                 AuditEventCategory              category,
+                 const std::vector<std::string>& targets);
+
+} // namespace Slic3r::plugin_audit
+
+#endif // slic3r_PluginAuditManagerInternal_hpp_

src/slic3r/plugin/PluginFsUtils.cpp

@@ -14,8 +14,7 @@
 
 #include "PluginAuditManager.hpp"
 #include "PythonInterpreter.hpp"
-#include "slic3r/GUI/I18N.hpp"
-#include "slic3r/GUI/format.hpp"
+#include "PluginText.hpp"
 
 #include <exception>
 #include <miniz.h>
@@ -92,7 +91,7 @@ bool resolve_allowed_plugin_root(const PluginDescriptor& descriptor,
 
     const fs::path plugin_root = resolve_plugin_root_from_descriptor(descriptor);
     if (plugin_root.empty()) {
-        error = _u8L("Plugin folder could not be determined.");
+        error = PLUGIN_U8L("Plugin folder could not be determined.");
         return false;
     }
 
@@ -103,7 +102,7 @@ bool resolve_allowed_plugin_root(const PluginDescriptor& descriptor,
         resolved_root = fs::absolute(plugin_root, ec);
     }
     if (ec || resolved_root.empty()) {
-        error = GUI::format(_u8L("Failed to resolve plugin folder: %1%"), plugin_root.string());
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Failed to resolve plugin folder: %1%"), plugin_root.string());
         return false;
     }
 
@@ -123,7 +122,7 @@ bool delete_plugin_root(const boost::filesystem::path& resolved_root, const std:
     const auto removed_count = fs::remove_all(resolved_root, ec);
     if (ec) {
         // TRN %1% is a folder path, %2% the system error message.
-        error = GUI::format(_u8L("Failed to delete plugin folder %1%: %2%"), resolved_root.string(), ec.message());
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Failed to delete plugin folder %1%: %2%"), resolved_root.string(), ec.message());
         return false;
     }
 
@@ -833,29 +832,6 @@ bool read_install_state(const boost::filesystem::path& plugin_dir, PluginInstall
     }
 }
 
-namespace {
-
-// The single descriptor -> sidecar metadata mapping. Prefer installed_version (fetched at install
-// time and preserved across rewrites) over a possibly stale manifest version.
-void apply_install_metadata(PluginInstallState& state, const PluginDescriptor& entry)
-{
-    state.installed_from    = entry.is_cloud_plugin() ? "cloud" : "local";
-    state.installed_version = !entry.installed_version.empty() ? entry.installed_version : entry.version;
-    state.plugin_name       = entry.name;
-    state.cloud_uuid        = entry.cloud_uuid();
-}
-
-} // namespace
-
-void seed_install_metadata(PluginInstallState& state, const PluginDescriptor& entry)
-{
-    if (!state.plugin_name.empty())
-        return;
-
-    apply_install_metadata(state, entry);
-    state.enabled = true;
-}
-
 bool write_install_state(const boost::filesystem::path& plugin_dir, const PluginInstallState& state)
 {
     namespace fs                = boost::filesystem;
@@ -899,9 +875,16 @@ bool write_install_state(const boost::filesystem::path& plugin_dir, const Plugin
     // Loading a plugin updates its lifecycle/capability state, but must retain permissions granted
     // during register_capabilities() or by a previous runtime audit prompt.
     read_install_state(plugin_dir, state);
-    apply_install_metadata(state, entry);
-    state.enabled      = enabled;
-    state.capabilities = capabilities;
+    state.installed_from    = entry.is_cloud_plugin() ? "cloud" : "local";
+    // Prefer the descriptor's recorded installed_version (the version fetched from the cloud
+    // at install time, preserved across sidecar re-writes) so a stale manifest/PEP723 header
+    // never overwrites the source-of-truth version. Fall back to the manifest version for
+    // first-time/local installs where installed_version is not yet populated.
+    state.installed_version = !entry.installed_version.empty() ? entry.installed_version : entry.version;
+    state.plugin_name       = entry.name;
+    state.cloud_uuid        = entry.cloud_uuid();
+    state.enabled           = enabled;
+    state.capabilities      = capabilities;
     return write_install_state(plugin_dir, state);
 }
 
@@ -912,7 +895,11 @@ bool write_install_state(const boost::filesystem::path& plugin_dir, const Plugin
     // permissions on a fresh install/reinstall. PluginManager writes the real per-capability flags
     // while preserving permissions once the package is loaded, via the overload above.
     PluginInstallState state;
-    seed_install_metadata(state, entry);
+    state.installed_from    = entry.is_cloud_plugin() ? "cloud" : "local";
+    state.installed_version = !entry.installed_version.empty() ? entry.installed_version : entry.version;
+    state.plugin_name       = entry.name;
+    state.cloud_uuid        = entry.cloud_uuid();
+    state.enabled           = true;
     return write_install_state(plugin_dir, state);
 }
 
@@ -1211,7 +1198,7 @@ boost::filesystem::path find_installed_plugin_entry(const boost::filesystem::pat
     namespace fs = boost::filesystem;
 
     if (!fs::exists(plugin_dir) || !fs::is_directory(plugin_dir)) {
-        error = GUI::format(_u8L("Plugin directory does not exist: %1%"), plugin_dir.string());
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin directory does not exist: %1%"), plugin_dir.string());
         return {};
     }
 
@@ -1228,7 +1215,7 @@ boost::filesystem::path find_installed_plugin_entry(const boost::filesystem::pat
         if (ext == ".py") {
             if (!py_entry.empty()) {
                 // TRN %1% and %2% are file names.
-                error = GUI::format(_u8L("Plugin directory contains multiple .py files: %1% and %2%"),
+                error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin directory contains multiple .py files: %1% and %2%"),
                                     py_entry.filename().string(), it->path().filename().string());
                 return {};
             }
@@ -1236,7 +1223,7 @@ boost::filesystem::path find_installed_plugin_entry(const boost::filesystem::pat
         } else if (ext == ".whl") {
             if (!whl_entry.empty()) {
                 // TRN %1% and %2% are file names.
-                error = GUI::format(_u8L("Plugin directory contains multiple .whl files: %1% and %2%"),
+                error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin directory contains multiple .whl files: %1% and %2%"),
                                     whl_entry.filename().string(), it->path().filename().string());
                 return {};
             }
@@ -1245,7 +1232,7 @@ boost::filesystem::path find_installed_plugin_entry(const boost::filesystem::pat
     }
 
     if (!py_entry.empty() && !whl_entry.empty()) {
-        error = _u8L("Plugin directory contains both .py and .whl entry files");
+        error = PLUGIN_U8L("Plugin directory contains both .py and .whl entry files");
         return {};
     }
 
@@ -1255,7 +1242,7 @@ boost::filesystem::path find_installed_plugin_entry(const boost::filesystem::pat
     if (!whl_entry.empty())
         return whl_entry;
 
-    error = _u8L("Plugin directory does not contain a .py or .whl entry file");
+    error = PLUGIN_U8L("Plugin directory does not contain a .py or .whl entry file");
     return {};
 }
 
@@ -1272,34 +1259,34 @@ std::vector<std::string> collect_resource_texture_files(const std::string& dir,
     error.clear();
 
     if (dir.empty()) {
-        error = _u8L("Resource texture directory is not set");
+        error = PLUGIN_U8L("Resource texture directory is not set");
         return files;
     }
     if (plugin_root.empty()) {
-        error = _u8L("Plugin folder could not be determined.");
+        error = PLUGIN_U8L("Plugin folder could not be determined.");
         return files;
     }
 
     boost::system::error_code ec;
     const fs::path resolved_dir = fs::weakly_canonical(fs::path(dir), ec);
     if (ec) {
-        error = _u8L("Resource texture directory could not be resolved");
+        error = PLUGIN_U8L("Resource texture directory could not be resolved");
         return files;
     }
 
     if (!fs::is_directory(resolved_dir, ec) || ec) {
-        error = _u8L("Resource texture path is not a directory");
+        error = PLUGIN_U8L("Resource texture path is not a directory");
         return files;
     }
 
     const fs::path resolved_root = fs::weakly_canonical(fs::path(plugin_root), ec);
     if (ec) {
-        error = _u8L("Plugin folder could not be resolved");
+        error = PLUGIN_U8L("Plugin folder could not be resolved");
         return files;
     }
 
     if (!is_inside_allowed_root(resolved_dir, resolved_root)) {
-        error = _u8L("Resource texture directory is outside the plugin folder");
+        error = PLUGIN_U8L("Resource texture directory is outside the plugin folder");
         return files;
     }
 
@@ -1324,7 +1311,7 @@ std::vector<std::string> collect_resource_texture_files(const std::string& dir,
     }
 
     if (ec) {
-        error = _u8L("Resource texture directory could not be read");
+        error = PLUGIN_U8L("Resource texture directory could not be read");
         return {};
     }
 

src/slic3r/plugin/PluginFsUtils.hpp

@@ -186,19 +186,12 @@ std::vector<std::string> collect_resource_texture_files(const std::string& dir,
 
 // Canonical writer: emits the .install_state.json schema for the given state.
 bool write_install_state(const boost::filesystem::path& plugin_dir, const PluginInstallState& state);
-
 // Builds a PluginInstallState from the descriptor and delegates to the canonical writer.
 bool write_install_state(const boost::filesystem::path& plugin_dir, const PluginDescriptor& entry, bool enabled,
                          const std::vector<std::pair<std::string, bool>>& capabilities);
 // Convenience overload: write(dir, entry, /*enabled=*/true, /*capabilities=*/{}).
 bool write_install_state(const boost::filesystem::path& plugin_dir, const PluginDescriptor& entry);
 
-// Fill the descriptor-derived install metadata into a sidecar state that does not describe an
-// installed plugin yet, and mark it enabled. Leaves permissions and capabilities untouched.
-// Single source for the metadata mapping used by the install writer and by the audit prompt path
-// that creates a sidecar on demand.
-void seed_install_metadata(PluginInstallState& state, const PluginDescriptor& entry);
-
 // Reads install state back into the descriptor; plugin_key is always derived. Returns whether the
 // sidecar was present and valid.
 bool read_install_state(const boost::filesystem::path& plugin_dir, PluginDescriptor& entry);

src/slic3r/plugin/PluginLoader.cpp

@@ -11,8 +11,7 @@
 #include "PythonPluginBridge.hpp"
 #include "pluginTypes/resourceTexture/ResourceTexturePluginCapability.hpp"
 #include "libslic3r/Utils.hpp"
-#include "slic3r/GUI/I18N.hpp"
-#include "slic3r/GUI/format.hpp"
+#include "PluginText.hpp"
 
 #include <boost/algorithm/string.hpp>
 #include <boost/algorithm/string/case_conv.hpp>
@@ -102,7 +101,7 @@ bool read_local_plugin_package_metadata(const boost::filesystem::path& source_pa
 
     const std::string ext = plugin_package_extension(source_path);
     if (ext != ".py" && ext != ".whl") {
-        error = GUI::format(_u8L("Plugin package must be a .py or .whl file, got: %1%"), ext);
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin package must be a .py or .whl file, got: %1%"), ext);
         return false;
     }
 
@@ -179,14 +178,14 @@ bool add_wheel_dependencies_to_sys_path(const PluginDescriptor& descriptor,
             std::string extract_error;
             if (!extract_zip_to_directory(it->path(), dep_dir, extract_error)) {
                 // TRN %1% is the dependency file, %2% the error detail.
-                error = GUI::format(_u8L("Failed to extract plugin .whl dependency %1%: %2%"), it->path().string(), extract_error);
+                error = PLUGIN_FORMAT(PLUGIN_U8L("Failed to extract plugin .whl dependency %1%: %2%"), it->path().string(), extract_error);
                 return false;
             }
         }
 
         std::string syspath_error;
         if (!interpreter.add_plugin_sys_path(dep_dir.string(), syspath_error)) {
-            error = GUI::format(_u8L("Failed to add .whl dependency to sys.path: %1%"), syspath_error);
+            error = PLUGIN_FORMAT(PLUGIN_U8L("Failed to add .whl dependency to sys.path: %1%"), syspath_error);
             return false;
         }
         plugin_paths.push_back(dep_dir.string());
@@ -248,12 +247,12 @@ bool load(const PluginDescriptor&                          descriptor,
 
     PythonInterpreter& interpreter = PythonInterpreter::instance();
     if (!interpreter.is_initialized()) {
-        error = GUI::format(_u8L("Python interpreter not initialized: %1%"), interpreter.last_error());
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Python interpreter not initialized: %1%"), interpreter.last_error());
         return false;
     }
 
     if (!descriptor.is_metadata_valid()) {
-        error = GUI::format(_u8L("Plugin manifest is invalid: %1%"), descriptor.plugin_key);
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin manifest is invalid: %1%"), descriptor.plugin_key);
         if (descriptor.has_error())
             error += " - " + descriptor.normalized_error();
         return false;
@@ -274,7 +273,7 @@ bool load(const PluginDescriptor&                          descriptor,
     if (!skip_deps) {
         std::string pkg_install_error;
         if (!install_packages(descriptor.dependencies, pkg_install_error)) {
-            error = GUI::format(_u8L("Failed to install plugin dependencies: %1%"), pkg_install_error);
+            error = PLUGIN_FORMAT(PLUGIN_U8L("Failed to install plugin dependencies: %1%"), pkg_install_error);
             return false;
         }
     }
@@ -293,7 +292,7 @@ bool load(const PluginDescriptor&                          descriptor,
     PyObject*   module = import_plugin_module(descriptor, plugin.plugin_sys_paths, plugin.plugin_modules, load_error);
     if (module == nullptr) {
         bridge.cancel_plugin_capture(descriptor.entry_path);
-        error = GUI::format(_u8L("Failed to load plugin module: %1%"), load_error);
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Failed to load plugin module: %1%"), load_error);
         return false;
     }
 
@@ -308,13 +307,13 @@ bool load(const PluginDescriptor&                          descriptor,
     auto        capabilities_found = bridge.finalize_plugin_capture(descriptor.entry_path, descriptor.plugin_key, bridge_error);
     if (!bridge_error.empty()) {
         capabilities_found.clear();
-        error = GUI::format(_u8L("Plugin registration failed: %1%"), bridge_error);
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin registration failed: %1%"), bridge_error);
         if (registration_failed != nullptr)
             *registration_failed = true;
         return false;
     }
     if (capabilities_found.empty()) {
-        error = _u8L("Plugin module did not register any capabilities");
+        error = PLUGIN_U8L("Plugin module did not register any capabilities");
         return false;
     }
 
@@ -366,7 +365,7 @@ bool load(const PluginDescriptor&                          descriptor,
 
                     if (!seen_capabilities[type].insert(found.name).second) {
                         // TRN %1% is the capability name, %2% the capability type (e.g. Script).
-                        materialization_error = GUI::format(_u8L("Plugin declares duplicate capability '%1%' for type %2%"),
+                        materialization_error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin declares duplicate capability '%1%' for type %2%"),
                                                             found.name, PluginConfig::capability_type_label(type));
                         break;
                     }
@@ -422,9 +421,9 @@ bool load(const PluginDescriptor&                          descriptor,
                     capabilities.push_back(std::move(instance));
                 }
             } catch (const std::exception& ex) {
-                materialization_error = GUI::format(_u8L("Plugin capability materialization failed: %1%"), ex.what());
+                materialization_error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin capability materialization failed: %1%"), ex.what());
             } catch (...) {
-                materialization_error = _u8L("Plugin capability materialization failed");
+                materialization_error = PLUGIN_U8L("Plugin capability materialization failed");
             }
         }
 
@@ -466,11 +465,11 @@ bool load(const PluginDescriptor&                          descriptor,
     } catch (const std::exception& ex) {
         teardown_capabilities(plugin.capabilities, lifecycle_count);
         // TRN on_load is the name of the plugin's startup function; keep it untranslated.
-        error = GUI::format(_u8L("Plugin on_load failed: %1%"), ex.what());
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin on_load failed: %1%"), ex.what());
         return false;
     } catch (...) {
         teardown_capabilities(plugin.capabilities, lifecycle_count);
-        error = _u8L("Plugin on_load failed");
+        error = PLUGIN_U8L("Plugin on_load failed");
         return false;
     }
 
@@ -651,7 +650,7 @@ bool install_plugin(const boost::filesystem::path& filepath,
     bool     backup_created = false;
 
     auto fail = [&error](const std::string& message) {
-        error = GUI::format(_u8L("Plugin installation failed: %1%"), message);
+        error = PLUGIN_FORMAT(PLUGIN_U8L("Plugin installation failed: %1%"), message);
         return false;
     };
 
@@ -659,23 +658,23 @@ bool install_plugin(const boost::filesystem::path& filepath,
     const fs::path            source_path = canonical_or_absolute(filepath);
 
     if (!fs::exists(source_path, ec) || !fs::is_regular_file(source_path, ec))
-        return fail(GUI::format(_u8L("Plugin package is not a file: %1%"), filepath.string()));
+        return fail(PLUGIN_FORMAT(PLUGIN_U8L("Plugin package is not a file: %1%"), filepath.string()));
 
     const std::string ext = plugin_package_extension(source_path);
     if (ext != ".py" && ext != ".whl")
-        return fail(GUI::format(_u8L("Plugin package must be a .py or .whl file, got: %1%"), ext));
+        return fail(PLUGIN_FORMAT(PLUGIN_U8L("Plugin package must be a .py or .whl file, got: %1%"), ext));
     // The cloud UUID is concatenated into the install path (final_dir = plugin_root / cloud_uuid).
     // It comes verbatim from the server's catalog JSON, so reject anything that could escape the
     // per-user plugin root (traversal, leading dots, separators) before touching the filesystem.
     if (is_cloud_install && !is_valid_plugin_id(cloud_uuid))
-        return fail(GUI::format(_u8L("Cloud plugin UUID is not a valid identifier: %1%"), cloud_uuid));
+        return fail(PLUGIN_FORMAT(PLUGIN_U8L("Cloud plugin UUID is not a valid identifier: %1%"), cloud_uuid));
 
     const fs::path plugin_root = is_cloud_install && !cloud_user_id.empty() ? fs::path(get_cloud_plugin_dir(cloud_user_id)) :
                                                                              local_plugin_root();
     fs::create_directories(plugin_root, ec);
     if (ec)
         // TRN %1% is a folder path, %2% the system error message.
-        return fail(GUI::format(_u8L("Failed to create plugin directory %1%: %2%"), plugin_root.string(), ec.message()));
+        return fail(PLUGIN_FORMAT(PLUGIN_U8L("Failed to create plugin directory %1%: %2%"), plugin_root.string(), ec.message()));
 
     std::string meta_error;
     if (is_cloud_install) {
@@ -718,7 +717,7 @@ bool install_plugin(const boost::filesystem::path& filepath,
         fs::rename(final_dir, backup_dir, ec);
         if (ec)
             // TRN %1% is a folder path, %2% the system error message.
-            return fail(GUI::format(_u8L("Failed to back up existing plugin %1%: %2%"), final_dir.string(), ec.message()));
+            return fail(PLUGIN_FORMAT(PLUGIN_U8L("Failed to back up existing plugin %1%: %2%"), final_dir.string(), ec.message()));
         backup_created = true;
     }
 
@@ -729,7 +728,7 @@ bool install_plugin(const boost::filesystem::path& filepath,
             boost::system::error_code restore_ec;
             fs::rename(backup_dir, final_dir, restore_ec);
         }
-        return fail(GUI::format(_u8L("Failed to create plugin directory %1%: %2%"), final_dir.string(), ec.message()));
+        return fail(PLUGIN_FORMAT(PLUGIN_U8L("Failed to create plugin directory %1%: %2%"), final_dir.string(), ec.message()));
     }
 
     fs::copy_file(source_path, dest_file, ec);
@@ -740,7 +739,7 @@ bool install_plugin(const boost::filesystem::path& filepath,
             fs::rename(backup_dir, final_dir, restore_ec);
         }
         // TRN %1% is a file path, %2% the system error message.
-        return fail(GUI::format(_u8L("Failed to copy plugin file to %1%: %2%"), dest_file.string(), ec.message()));
+        return fail(PLUGIN_FORMAT(PLUGIN_U8L("Failed to copy plugin file to %1%: %2%"), dest_file.string(), ec.message()));
     }
 
     // Update entry_path to the installed location.
@@ -760,7 +759,7 @@ bool install_plugin(const boost::filesystem::path& filepath,
             fs::remove_all(final_dir, rollback_ec);
             if (backup_created)
                 fs::rename(backup_dir, final_dir, rollback_ec);
-            return fail(GUI::format(_u8L("Failed to write plugin install state: %1%"), (final_dir / INSTALL_STATE_FILE).string()));
+            return fail(PLUGIN_FORMAT(PLUGIN_U8L("Failed to write plugin install state: %1%"), (final_dir / INSTALL_STATE_FILE).string()));
         }
     }
 

src/slic3r/plugin/PluginManager.cpp

@@ -53,18 +53,6 @@ const char* const LOAD_CANCELLED = "__plugin_load_cancelled__";
 
 } // namespace
 
-void Plugin::release_module()
-{
-    if (module == nullptr && plugin_sys_paths.empty() && plugin_modules.empty())
-        return;
-
-    PythonInterpreter::instance().unload_module(module, module_name, plugin_sys_paths, plugin_modules);
-    module = nullptr;
-    module_name.clear();
-    plugin_sys_paths.clear();
-    plugin_modules.clear();
-}
-
 PluginManager& PluginManager::instance()
 {
     // Touch the interpreter first so its static outlives this one: ~Plugin needs it alive to
@@ -1180,8 +1168,12 @@ void PluginManager::mark_plugin_install_state_disabled(const std::string& plugin
 
     const boost::filesystem::path root(descriptor.plugin_root);
     PluginInstallState state;
-    if (!read_install_state(root, state))
-        seed_install_metadata(state, descriptor);
+    if (!read_install_state(root, state)) {
+        state.installed_from    = descriptor.is_cloud_plugin() ? "cloud" : "local";
+        state.installed_version = !descriptor.installed_version.empty() ? descriptor.installed_version : descriptor.version;
+        state.plugin_name       = descriptor.name;
+        state.cloud_uuid        = descriptor.cloud_uuid();
+    }
     state.enabled = false;
     if (!write_install_state(root, state))
         return;

src/slic3r/plugin/PluginModule.cpp

@@ -0,0 +1,22 @@
+// Plugin module ownership is part of the loader's contract, not of the registry's GUI-facing
+// surface. Kept in its own translation unit so the headless probe can link the loader without
+// pulling PluginManager.cpp (and therefore wx/GUI) into the probe.
+
+#include "PluginManager.hpp"
+#include "PythonInterpreter.hpp"
+
+namespace Slic3r {
+
+void Plugin::release_module()
+{
+    if (module == nullptr && plugin_sys_paths.empty() && plugin_modules.empty())
+        return;
+
+    PythonInterpreter::instance().unload_module(module, module_name, plugin_sys_paths, plugin_modules);
+    module = nullptr;
+    module_name.clear();
+    plugin_sys_paths.clear();
+    plugin_modules.clear();
+}
+
+} // namespace Slic3r

src/slic3r/plugin/PluginPermissionProbe.cpp

@@ -0,0 +1,565 @@
+// Headless, record-only plugin permission probe.
+//
+// This is a developer/security-analysis tool, not a second production loader. It reuses the
+// embedded interpreter, the production plugin_loader sequence and the GUI-free `orca` bindings
+// (capability types plus the geometry/model/slicing host domains), so the observations come from
+// the same audit classification and target extraction as the GUI. It then lets every audited
+// operation continue instead of consulting permission grants or dialogs. Host domains that need
+// the live GUI (app, presets, ui) and plugin.storage are registered as explicit unsupported
+// errors; the config API reports an empty config and refuses writes.
+//
+// It is NOT a sandbox. Plugin code runs with the probe's filesystem, network and process
+// privileges. The temporary data directory only keeps OrcaSlicer's own state out of the user's
+// tree; it does not confine plugin-authored code. Use OS-level restrictions (container, user,
+// seccomp/AppArmor, firewall) when the package is not trusted.
+//
+// The report describes only the paths this run exercised. CPython audit events are observations of
+// particular operations, not a notification for every Python call, so absence of a category in the
+// report is not evidence that the plugin cannot perform it.
+
+#include "PluginAuditManager.hpp"
+#include "PluginDescriptor.hpp"
+#include "PluginFsUtils.hpp"
+#include "PluginLoader.hpp"
+#include "PluginManager.hpp"
+#include "PluginProbeCollector.hpp"
+#include "PythonInterpreter.hpp"
+#include "PythonPluginInterface.hpp"
+
+#include "libslic3r/LifecycleEvents.hpp"
+#include "libslic3r/Utils.hpp"
+
+#include <boost/algorithm/string/case_conv.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/path.hpp>
+#include <boost/system/error_code.hpp>
+#include <nlohmann/json.hpp>
+#include <pybind11/embed.h>
+#include <pybind11/gil.h>
+#include <pybind11/pytypes.h>
+
+#include <cstdlib>
+#include <exception>
+#include <iostream>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace fs = boost::filesystem;
+namespace py = pybind11;
+
+using namespace Slic3r;
+
+namespace {
+
+constexpr const char* kLoadPhase = "load:import+registration+on_load";
+
+struct Options
+{
+    fs::path plugin_path;
+    bool json = false;
+};
+
+void print_usage(std::ostream& out)
+{
+    out << "Usage: orca-plugin-probe [--json] <plugin.py|plugin.whl>\n"
+           "\n"
+           "Runs a plugin in a temporary data/working directory and reports the CPython audit\n"
+           "events observed while its import, registration, on_load and discoverable callbacks\n"
+           "execute. The probe does not prompt for permissions, write grants, install dependencies,\n"
+           "or start the OrcaSlicer GUI.\n"
+           "\n"
+           "  --json   Emit the report as JSON (default: human-readable text)\n"
+           "  --help   Show this message\n"
+           "\n"
+           "WARNING: this is not a sandbox. Plugin Python code runs with this process's privileges.\n"
+           "Results are observational and non-exhaustive. Use OS-level restrictions for untrusted\n"
+           "packages.\n"
+           "\n"
+           "Exit status: 0 plugin loaded, 1 initialization/load failure, 2 usage error.\n";
+}
+
+bool parse_options(int argc, char** argv, Options& options, std::string& error)
+{
+    for (int index = 1; index < argc; ++index) {
+        const std::string argument = argv[index];
+        if (argument == "--help" || argument == "-h") {
+            print_usage(std::cout);
+            std::exit(0);
+        }
+        if (argument == "--json") {
+            options.json = true;
+            continue;
+        }
+        if (!argument.empty() && argument.front() == '-') {
+            error = "Unknown option: " + argument;
+            return false;
+        }
+        if (!options.plugin_path.empty()) {
+            error = "Only one plugin package may be probed at a time.";
+            return false;
+        }
+        options.plugin_path = fs::path(argument);
+    }
+
+    if (options.plugin_path.empty()) {
+        error = "No plugin package given.";
+        return false;
+    }
+    return true;
+}
+
+// Keep every write OrcaSlicer makes during the run inside a throwaway tree, and keep relative
+// paths opened by plugin code out of the caller's working directory. This is hygiene, not
+// confinement: an absolute path supplied by the plugin is still opened normally.
+class ScopedProbeWorkspace
+{
+public:
+    ScopedProbeWorkspace()
+        : m_root(fs::temp_directory_path() / fs::unique_path("orca-plugin-probe-%%%%-%%%%-%%%%"))
+        , m_previous_data_dir(data_dir())
+        , m_previous_working_dir(fs::current_path())
+    {
+        fs::create_directories(m_root);
+        set_data_dir(m_root.string());
+        fs::current_path(m_root);
+        m_moved = true;
+    }
+
+    ~ScopedProbeWorkspace()
+    {
+        boost::system::error_code ec;
+        set_data_dir(m_previous_data_dir);
+        if (m_moved)
+            fs::current_path(m_previous_working_dir, ec);
+        fs::remove_all(m_root, ec);
+    }
+
+    const fs::path& root() const { return m_root; }
+
+private:
+    fs::path m_root;
+    std::string m_previous_data_dir;
+    fs::path m_previous_working_dir;
+    bool m_moved = false;
+};
+
+class ScopedObservationObserver
+{
+public:
+    explicit ScopedObservationObserver(PluginProbeCollector& collector) : m_collector(collector)
+    {
+        PluginAuditManager::instance().set_observation_observer(
+            [this](const AuditObservation& observation) { m_collector.record(observation); });
+    }
+
+    ~ScopedObservationObserver() { PluginAuditManager::instance().clear_observation_observer(); }
+
+    ScopedObservationObserver(const ScopedObservationObserver&)            = delete;
+    ScopedObservationObserver& operator=(const ScopedObservationObserver&) = delete;
+
+private:
+    PluginProbeCollector& m_collector;
+};
+
+bool prepare_descriptor(const fs::path& plugin_path, PluginDescriptor& descriptor, std::string& error)
+{
+    boost::system::error_code ec;
+    const fs::path canonical = fs::weakly_canonical(plugin_path, ec);
+    if (ec || !fs::exists(canonical) || !fs::is_regular_file(canonical)) {
+        error = "Plugin package is not a readable file: " + plugin_path.string();
+        return false;
+    }
+
+    std::string extension = canonical.extension().string();
+    boost::algorithm::to_lower(extension);
+    if (extension != ".py" && extension != ".whl") {
+        error = "Plugin package must be a .py or .whl file, got: " + extension;
+        return false;
+    }
+
+    if (extension == ".whl") {
+        if (!read_wheel_plugin_metadata(canonical, descriptor, error))
+            return false;
+    } else {
+        if (!read_python_plugin_metadata(canonical, descriptor, error))
+            return false;
+    }
+
+    descriptor.entry_path     = canonical.string();
+    descriptor.plugin_key     = make_local_plugin_key(canonical.stem().string());
+    descriptor.metadata_valid = true;
+    // Leaving plugin_root empty keeps the probe independent of any .install_state.json next to
+    // the package and avoids the production sidecar path.
+    descriptor.plugin_root.clear();
+    if (descriptor.name.empty())
+        descriptor.name = descriptor.plugin_key;
+    return true;
+}
+
+void redirect_python_stdout()
+{
+    py::gil_scoped_acquire gil;
+    py::object sys = py::module_::import("sys");
+    // Keep plugin prints from corrupting the C++ report on stdout. sys.stderr is the interpreter's
+    // tee to the temporary log, so plugin output remains available there.
+    sys.attr("stdout") = sys.attr("stderr");
+}
+
+template<class Function>
+void invoke_callback(const std::shared_ptr<PluginCapabilityInterface>& capability,
+                     const std::string& phase,
+                     const std::string& callback,
+                     PluginProbeCollector& collector,
+                     Function&& function)
+{
+    ScopedPluginAuditPhase phase_scope(phase);
+    try {
+        std::forward<Function>(function)();
+        collector.record_callback({capability ? capability->name() : std::string{}, phase, callback, "invoked", {}});
+    } catch (const std::exception& error) {
+        collector.record_callback({capability ? capability->name() : std::string{}, phase, callback, "failed", error.what()});
+    } catch (...) {
+        collector.record_callback({capability ? capability->name() : std::string{}, phase, callback, "failed", "non-standard exception"});
+    }
+}
+
+struct ProbeCapability
+{
+    std::string name;
+    std::string type;
+    bool enabled = true;
+};
+
+std::vector<ProbeCapability> describe_capabilities(const Plugin& plugin)
+{
+    std::vector<ProbeCapability> capabilities;
+    capabilities.reserve(plugin.capabilities.size());
+    for (const auto& capability : plugin.capabilities) {
+        if (!capability)
+            continue;
+        capabilities.push_back({capability->name(), plugin_capability_type_to_string(capability->type()), capability->is_enabled()});
+    }
+    return capabilities;
+}
+
+void exercise_callbacks(const Plugin& plugin, PluginProbeCollector& collector)
+{
+    // on_load() already ran inside plugin_loader::load. The callbacks below are the additional
+    // entry points a loaded capability exposes to the host. Synthetic inputs are used; a callback
+    // may behave differently with a real application state, which the report cannot capture.
+    static constexpr LifecycleEvent lifecycle_events[] = {
+        LifecycleEvent::NewProject,          LifecycleEvent::ProjectOpened,         LifecycleEvent::ProjectBeforeSave,
+        LifecycleEvent::ProjectAfterSave,    LifecycleEvent::ProjectClosed,         LifecycleEvent::ProjectDirtyChanged,
+        LifecycleEvent::SliceStarted,        LifecycleEvent::SliceGeometryFinished, LifecycleEvent::GCodeExportStarted,
+        LifecycleEvent::GCodeExportFinished, LifecycleEvent::SlicingJobComplete,    LifecycleEvent::ObjectAdded,
+        LifecycleEvent::ObjectDeleted,       LifecycleEvent::ObjectTransformed,     LifecycleEvent::ObjectChanged,
+        LifecycleEvent::ObjectRenamed,       LifecycleEvent::PlateCreated,          LifecycleEvent::PlateDeleted,
+        LifecycleEvent::PlateSelected,       LifecycleEvent::PlateRenamed,          LifecycleEvent::PresetSelected,
+        LifecycleEvent::PresetSaved,         LifecycleEvent::PrintStateChanged,     LifecycleEvent::DeviceOnline,
+        LifecycleEvent::DeviceOffline,       LifecycleEvent::DeviceDiscovered,      LifecycleEvent::DeviceSelected,
+        LifecycleEvent::UploadStarted,       LifecycleEvent::UploadFinished,        LifecycleEvent::PrintJobStarted,
+        LifecycleEvent::PrintJobFinished,    LifecycleEvent::SendJobStarted,        LifecycleEvent::SendJobFinished,
+    };
+
+    for (const auto& capability : plugin.capabilities) {
+        if (!capability)
+            continue;
+
+        invoke_callback(capability, "callback:get_default_config", "get_default_config", collector,
+                        [&capability]() { (void) capability->get_default_config(); });
+
+        if (capability->config_ui_available()) {
+            invoke_callback(capability, "callback:get_config_ui", "get_config_ui", collector,
+                            [&capability]() { (void) capability->get_config_ui(); });
+        } else {
+            collector.record_callback(
+                {capability->name(), "callback:get_config_ui", "get_config_ui", "skipped", "has_config_ui() is false"});
+        }
+
+        for (const LifecycleEvent event : lifecycle_events) {
+            const std::string event_name = lifecycle_event_to_string(event);
+            const std::string phase      = "callback:on_lifecycle_event(" + event_name + ")";
+            LifecycleEventContext context;
+            context.source = "orca-plugin-probe";
+            context.msg    = "synthetic event generated by the permission probe";
+            invoke_callback(capability, phase, "on_lifecycle_event(" + event_name + ")", collector,
+                            [&capability, event, &context]() { capability->on_lifecycle_event(event, context); });
+        }
+
+        // Cancellation is a load-time path; calling it after a successful load would misrepresent
+        // the capability's real lifecycle. Report it as skipped instead.
+        collector.record_callback(
+            {capability->name(), "callback:on_cancelled", "on_cancelled", "skipped", "not invoked after a successful load"});
+    }
+}
+
+nlohmann::json observation_json(const AuditObservation& observation)
+{
+    return {
+        {"plugin", observation.plugin_key},
+        {"capability", observation.capability},
+        {"phase", observation.phase.empty() ? "unattributed" : observation.phase},
+        {"event", observation.event_name},
+        {"category", observation.category},
+        {"targets", observation.targets},
+        {"continued", observation.continued},
+    };
+}
+
+nlohmann::json callback_json(const ProbeCallbackRecord& callback)
+{
+    return {
+        {"capability", callback.capability}, {"phase", callback.phase},   {"callback", callback.callback},
+        {"status", callback.status},         {"detail", callback.detail},
+    };
+}
+
+nlohmann::json capability_json(const ProbeCapability& capability)
+{
+    return {
+        {"name", capability.name},
+        {"type", capability.type},
+        {"enabled", capability.enabled},
+    };
+}
+
+nlohmann::json build_report(const Options& options,
+                            const PluginProbeCollector& collector,
+                            const std::vector<ProbeCapability>& capabilities,
+                            const std::string& plugin_key,
+                            bool python_initialized,
+                            const std::string& python_error,
+                            bool loaded,
+                            const std::string& load_error,
+                            const std::string& data_dir)
+{
+    nlohmann::json observations = nlohmann::json::array();
+    for (const AuditObservation& observation : collector.observations())
+        observations.push_back(observation_json(observation));
+
+    nlohmann::json callbacks = nlohmann::json::array();
+    for (const ProbeCallbackRecord& callback : collector.callbacks())
+        callbacks.push_back(callback_json(callback));
+
+    nlohmann::json capability_list = nlohmann::json::array();
+    for (const ProbeCapability& capability : capabilities)
+        capability_list.push_back(capability_json(capability));
+
+    return {
+        {"tool", "orca-plugin-permission-probe"},
+        {"mode", "record-only"},
+        {"observed_by_this_run_only", true},
+        {"plugin",
+         {
+             {"path", options.plugin_path.string()},
+             {"key", plugin_key},
+         }},
+        {"environment",
+         {
+             {"python_initialized", python_initialized},
+             {"python_error", python_error},
+             {"temporary_data_dir", data_dir},
+             {"temporary_data_dir_removed_on_exit", true},
+             {"working_directory", data_dir},
+             {"interactive_prompts", false},
+             {"grants_persisted", false},
+         }},
+        {"load", {{"ok", loaded}, {"error", load_error}, {"capabilities", capability_list}}},
+        {"callbacks", callbacks},
+        {"observations", observations},
+        {"summary", collector.summary()},
+        {"coverage",
+         {
+             {"exhaustive", false},
+             {"sandbox", false},
+             {"plugin_code_executed", true},
+             {"notes",
+              {
+                  "Only the code paths this probe exercised are represented. Audit events cover "
+                  "particular operations, not every Python call.",
+                  "The probe does not start the GUI. Host APIs that require a live application or "
+                  "UI (orca.host.app/presets/ui) and plugin.storage report an explicit unsupported "
+                  "error and are reported as failed callbacks.",
+                  "The probe links libslic3r for core geometry/print types, but not libslic3r_gui "
+                  "or wx.",
+                  "The temporary data directory isolates OrcaSlicer state, not plugin-authored file, "
+                  "network or process access. Use OS-level restrictions for untrusted packages.",
+                  "The loader may extract adjacent .whl dependencies into the package's directory; "
+                  "probe a copy of the package when that side effect is unwanted.",
+                  "Import, registration and on_load share one loader phase; the production loader "
+                  "does not expose a finer boundary without changing its behavior.",
+                  "Callbacks run with synthetic inputs, which can change plugin control flow "
+                  "compared with a real application session.",
+                  "continued=true means the audit hook did not block the operation. A surrounding "
+                  "callback or load step can still fail afterwards, as reported in callbacks/load.",
+                  "Events raised on a plugin-spawned thread carry no phase label and are reported "
+                  "as unattributed.",
+                  "Plugin code can spawn threads/processes, write anywhere this process can, or "
+                  "terminate the process. None of that is contained by the probe.",
+              }},
+         }},
+    };
+}
+
+void print_text_report(const nlohmann::json& report)
+{
+    std::cout << "OrcaSlicer plugin permission probe (record-only)\n"
+                 "WARNING: observational only; not exhaustive and not a sandbox.\n\n";
+    std::cout << "Plugin: " << report["plugin"]["path"].get<std::string>() << "\n";
+    std::cout << "Python initialized: " << (report["environment"]["python_initialized"].get<bool>() ? "yes" : "no") << "\n";
+    if (!report["environment"]["python_error"].get<std::string>().empty())
+        std::cout << "Python error: " << report["environment"]["python_error"].get<std::string>() << "\n";
+    std::cout << "Load: " << (report["load"]["ok"].get<bool>() ? "ok" : "failed") << "\n";
+    if (!report["load"]["error"].get<std::string>().empty())
+        std::cout << "Load error: " << report["load"]["error"].get<std::string>() << "\n";
+
+    std::cout << "\nCapabilities (" << report["load"]["capabilities"].size() << "):\n";
+    for (const auto& capability : report["load"]["capabilities"])
+        std::cout << "  " << capability["name"].get<std::string>() << " [" << capability["type"].get<std::string>()
+                  << "] enabled=" << (capability["enabled"].get<bool>() ? "yes" : "no") << "\n";
+
+    std::cout << "\nCallbacks (" << report["callbacks"].size() << "):\n";
+    for (const auto& callback : report["callbacks"]) {
+        std::cout << "  " << callback["status"].get<std::string>() << " " << callback["callback"].get<std::string>();
+        if (!callback["capability"].get<std::string>().empty())
+            std::cout << " capability=" << callback["capability"].get<std::string>();
+        if (!callback["detail"].get<std::string>().empty())
+            std::cout << " - " << callback["detail"].get<std::string>();
+        std::cout << "\n";
+    }
+
+    std::cout << "\nObserved audit events (" << report["observations"].size() << "):\n";
+    for (const auto& observation : report["observations"]) {
+        std::cout << "  phase=" << observation["phase"].get<std::string>() << " event=" << observation["event"].get<std::string>()
+                  << " category=" << observation["category"].get<std::string>();
+        if (!observation["capability"].get<std::string>().empty())
+            std::cout << " capability=" << observation["capability"].get<std::string>();
+        if (!observation["targets"].empty()) {
+            std::cout << " targets=";
+            bool first = true;
+            for (const auto& target : observation["targets"]) {
+                if (!first)
+                    std::cout << ",";
+                std::cout << target.get<std::string>();
+                first = false;
+            }
+        }
+        std::cout << " continued=" << (observation["continued"].get<bool>() ? "yes" : "no") << "\n";
+    }
+
+    std::cout << "\nObserved permission categories:\n";
+    for (const auto& [category, detail] : report["summary"]["categories"].items()) {
+        std::cout << "  " << category << ":";
+        for (const auto& event : detail["events"])
+            std::cout << " " << event.get<std::string>();
+        if (!detail["targets"].empty()) {
+            std::cout << " -> ";
+            bool first = true;
+            for (const auto& target : detail["targets"]) {
+                if (!first)
+                    std::cout << ", ";
+                std::cout << target.get<std::string>();
+                first = false;
+            }
+        }
+        std::cout << "\n";
+    }
+    if (report["summary"]["categories"].empty())
+        std::cout << "  (none observed)\n";
+
+    std::cout << "\nCoverage limits:\n";
+    for (const auto& note : report["coverage"]["notes"])
+        std::cout << "  - " << note.get<std::string>() << "\n";
+}
+
+} // namespace
+
+int main(int argc, char** argv)
+{
+    Options options;
+    std::string option_error;
+    if (!parse_options(argc, argv, options, option_error)) {
+        std::cerr << "orca-plugin-probe: " << option_error << "\n\n";
+        print_usage(std::cerr);
+        return 2;
+    }
+
+    boost::system::error_code ec;
+    const fs::path canonical_plugin = fs::weakly_canonical(options.plugin_path, ec);
+    if (!ec)
+        options.plugin_path = canonical_plugin;
+
+    ScopedProbeWorkspace workspace;
+    PluginProbeCollector collector;
+    ScopedObservationObserver observer(collector);
+
+    PluginDescriptor descriptor;
+    std::string descriptor_error;
+    const bool descriptor_ready = prepare_descriptor(options.plugin_path, descriptor, descriptor_error);
+
+    PythonInterpreter& interpreter = PythonInterpreter::instance();
+    bool python_initialized        = false;
+    std::string python_error;
+    if (descriptor_ready) {
+        python_initialized = interpreter.initialize();
+        if (!python_initialized)
+            python_error = interpreter.last_error();
+    }
+
+    if (python_initialized) {
+        try {
+            redirect_python_stdout();
+        } catch (const std::exception& error) {
+            python_error = std::string("Could not redirect Python stdout: ") + error.what();
+        }
+    }
+
+    bool loaded            = false;
+    std::string load_error = descriptor_error;
+    Plugin plugin;
+    std::vector<ProbeCapability> capabilities;
+
+    if (python_initialized && descriptor_ready) {
+        // The outer context covers import, registration and on_load in plugin_loader::load; the
+        // per-callback scopes below cover the follow-up calls. The production loader is unchanged.
+        ScopedPluginAuditContext audit_context(descriptor.plugin_key);
+        {
+            ScopedPluginAuditPhase load_phase(kLoadPhase);
+            loaded = plugin_loader::load(descriptor, /*skip_deps=*/true, /*capabilities_to_enable=*/{}, nullptr, plugin, load_error);
+            collector.record_callback({std::string{}, kLoadPhase, "plugin_loader::load", loaded ? "invoked" : "failed", load_error});
+            collector.record_callback({std::string{}, "callback:on_load", "on_load", loaded ? "invoked" : "skipped",
+                                       loaded ? "invoked by plugin_loader::load for each materialized capability" :
+                                                "plugin_loader::load failed before completing on_load"});
+        }
+
+        capabilities = describe_capabilities(plugin);
+
+        if (loaded)
+            exercise_callbacks(plugin, collector);
+
+        if (loaded) {
+            ScopedPluginAuditPhase unload_phase("callback:on_unload");
+            plugin_loader::unload(plugin);
+            collector.record_callback({std::string{}, "callback:on_unload", "on_unload", "invoked",
+                                       "invoked by plugin_loader::unload; per-capability failures are logged by the loader"});
+        }
+    }
+
+    if (interpreter.is_initialized())
+        interpreter.shutdown();
+
+    const nlohmann::json report = build_report(options, collector, capabilities,
+                                               descriptor.plugin_key.empty() ? make_local_plugin_key(options.plugin_path.stem().string()) :
+                                                                               descriptor.plugin_key,
+                                               python_initialized, python_error, loaded, load_error, workspace.root().string());
+
+    if (options.json)
+        std::cout << report.dump(2, ' ', false, nlohmann::json::error_handler_t::replace) << "\n";
+    else
+        print_text_report(report);
+
+    return loaded ? 0 : 1;
+}

src/slic3r/plugin/PluginProbeCollector.hpp

@@ -0,0 +1,97 @@
+#ifndef slic3r_PluginProbeCollector_hpp_
+#define slic3r_PluginProbeCollector_hpp_
+
+// Record-only collection for the headless plugin permission probe. This is deliberately a plain
+// in-memory store: it has no dialog, grant or persistence path, and it never decides whether an
+// audited operation may proceed. Keeping it independent of wx/Python also makes its grouping and
+// phase attribution testable without starting the interpreter.
+
+#include "PluginAuditManager.hpp"
+
+#include <nlohmann/json.hpp>
+
+#include <map>
+#include <mutex>
+#include <set>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace Slic3r {
+
+// What the probe attempted and what came back. `status` is one of "invoked", "failed" or
+// "skipped"; a skipped callback is reported so the absence of observations is not mistaken for a
+// clean result.
+struct ProbeCallbackRecord
+{
+    std::string capability;
+    std::string phase;
+    std::string callback;
+    std::string status;
+    std::string detail;
+};
+
+class PluginProbeCollector
+{
+public:
+    void record(const AuditObservation& observation)
+    {
+        std::lock_guard<std::mutex> lock(m_mutex);
+        m_observations.push_back(observation);
+    }
+
+    void record_callback(ProbeCallbackRecord record)
+    {
+        std::lock_guard<std::mutex> lock(m_mutex);
+        m_callbacks.push_back(std::move(record));
+    }
+
+    std::vector<AuditObservation> observations() const
+    {
+        std::lock_guard<std::mutex> lock(m_mutex);
+        return m_observations;
+    }
+
+    std::vector<ProbeCallbackRecord> callbacks() const
+    {
+        std::lock_guard<std::mutex> lock(m_mutex);
+        return m_callbacks;
+    }
+
+    // Groups the run by the permission categories the audit hook already assigned, and lists the
+    // distinct targets and event names seen in each. This is a view of this run only; it says
+    // nothing about code paths the plugin did not exercise.
+    nlohmann::json summary() const
+    {
+        std::lock_guard<std::mutex> lock(m_mutex);
+
+        std::map<std::string, std::set<std::string>> events;
+        std::map<std::string, std::set<std::string>> targets;
+        for (const AuditObservation& observation : m_observations) {
+            events[observation.category].insert(observation.event_name);
+            targets[observation.category].insert(observation.targets.begin(), observation.targets.end());
+        }
+
+        nlohmann::json categories = nlohmann::json::object();
+        for (const auto& [category, category_events] : events) {
+            categories[category] = {
+                {"events", category_events},
+                {"targets", targets[category]},
+            };
+        }
+
+        return {
+            {"observed_event_count", m_observations.size()},
+            {"categories", categories},
+        };
+    }
+
+private:
+    mutable std::mutex m_mutex;
+    std::vector<AuditObservation> m_observations;
+    std::vector<ProbeCallbackRecord> m_callbacks;
+};
+
+} // namespace Slic3r
+
+#endif // slic3r_PluginProbeCollector_hpp_

src/slic3r/plugin/PluginText.hpp

@@ -0,0 +1,44 @@
+#pragma once
+
+// User-facing plugin messages are translated in the GUI build. The headless probe links neither
+// libslic3r_gui nor wx, so it formats the same English text without wxGetTranslation. The GUI path
+// expands to exactly the calls the plugin sources used before this header existed.
+
+#if defined(ORCA_PLUGIN_PROBE_BUILD)
+
+#include "libslic3r/format.hpp"
+
+#include <string>
+#include <utility>
+
+namespace Slic3r::plugin_text {
+
+inline std::string translate_utf8(const char* text) { return text == nullptr ? std::string{} : std::string(text); }
+inline std::string translate_utf8(const std::string& text) { return text; }
+
+template<typename... TArgs>
+inline std::string format(const char* fmt, TArgs&&... args)
+{
+    return Slic3r::format(fmt, std::forward<TArgs>(args)...);
+}
+
+template<typename... TArgs>
+inline std::string format(const std::string& fmt, TArgs&&... args)
+{
+    return Slic3r::format(fmt, std::forward<TArgs>(args)...);
+}
+
+} // namespace Slic3r::plugin_text
+
+#define PLUGIN_U8L(text) ::Slic3r::plugin_text::translate_utf8(text)
+#define PLUGIN_FORMAT(...) ::Slic3r::plugin_text::format(__VA_ARGS__)
+
+#else
+
+#include "slic3r/GUI/I18N.hpp"
+#include "slic3r/GUI/format.hpp"
+
+#define PLUGIN_U8L(text) _u8L(text)
+#define PLUGIN_FORMAT(...) GUI::format(__VA_ARGS__)
+
+#endif

src/slic3r/plugin/PythonPluginBridge.cpp

@@ -30,7 +30,7 @@
 #include "pluginTypes/slicingPipeline/SlicingPipelinePluginCapability.hpp"
 #include <pybind11/pytypes.h>
 #include <pybind11/gil.h>
-#include "slic3r/GUI/I18N.hpp"
+#include "PluginText.hpp"
 
 namespace py = pybind11;
 
@@ -50,7 +50,6 @@ std::mutex g_registry_mutex;
 std::unordered_map<std::string, std::vector<py::object>> g_pending_capabilities;
 std::unordered_map<std::string, py::object> g_pending_package;
 std::unordered_map<std::string, std::vector<std::string>> g_pending_fs_read_permissions;
-std::unordered_map<std::string, std::vector<std::string>> g_pending_network_permissions;
 struct PluginInstanceHandle
 {
     // The C++ plugin interface points into a Python object. Keep both alive through one
@@ -90,7 +89,6 @@ void discard_pending_capture_without_python(const std::string& plugin_key)
     }
 
     g_pending_fs_read_permissions.erase(plugin_key);
-    g_pending_network_permissions.erase(plugin_key);
 }
 
 } // namespace
@@ -116,7 +114,6 @@ void PythonPluginBridge::begin_plugin_capture(const std::string& plugin_key)
         g_pending_capabilities.erase(plugin_key);
         g_pending_package.erase(plugin_key);
         g_pending_fs_read_permissions.erase(plugin_key);
-        g_pending_network_permissions.erase(plugin_key);
     }
     // From now until finalize/cancel, @orca.plugin and register_capability() calls made by
     // Python code on this thread are attributed to this plugin.
@@ -148,7 +145,6 @@ std::vector<CapturedCapability> PythonPluginBridge::finalize_plugin_capture(cons
             g_pending_capabilities.erase(capture_key);
             g_pending_package.erase(capture_key);
             g_pending_fs_read_permissions.erase(capture_key);
-            g_pending_network_permissions.erase(capture_key);
         };
 
         try {
@@ -197,31 +193,7 @@ std::vector<CapturedCapability> PythonPluginBridge::finalize_plugin_capture(cons
                     granted = PluginAuditManager::instance().request_filesystem_read_permissions(plugin_key, fs_read_permissions);
                 }
                 if (!granted) {
-                    error = _u8L("Plugin filesystem read permission request denied");
-                    BOOST_LOG_TRIVIAL(warning) << error << " for key " << plugin_key;
-                    discard_pending_for_key();
-                    clear_active_key();
-                    return {};
-                }
-            }
-
-            std::vector<std::string> network_permissions;
-            {
-                std::lock_guard<std::mutex> lock(g_registry_mutex);
-                auto it = g_pending_network_permissions.find(capture_key);
-                if (it != g_pending_network_permissions.end()) {
-                    network_permissions = std::move(it->second);
-                    g_pending_network_permissions.erase(it);
-                }
-            }
-            if (!network_permissions.empty()) {
-                bool granted = false;
-                {
-                    py::gil_scoped_release release;
-                    granted = PluginAuditManager::instance().request_network_permissions(plugin_key, network_permissions);
-                }
-                if (!granted) {
-                    error = _u8L("Plugin network permission request denied");
+                    error = PLUGIN_U8L("Plugin filesystem read permission request denied");
                     BOOST_LOG_TRIVIAL(warning) << error << " for key " << plugin_key;
                     discard_pending_for_key();
                     clear_active_key();
@@ -351,7 +323,6 @@ void PythonPluginBridge::cancel_plugin_capture(const std::string& plugin_key)
         g_pending_capabilities.erase(plugin_key);
         g_pending_package.erase(plugin_key);
         g_pending_fs_read_permissions.erase(plugin_key);
-        g_pending_network_permissions.erase(plugin_key);
     }
 
     if (g_active_plugin_key == plugin_key)
@@ -379,7 +350,6 @@ void PythonPluginBridge::clear_pending_captures()
         }
         g_pending_package.clear();
         g_pending_fs_read_permissions.clear();
-        g_pending_network_permissions.clear();
         g_active_plugin_key.clear();
         return;
     }
@@ -389,7 +359,6 @@ void PythonPluginBridge::clear_pending_captures()
     g_pending_capabilities.clear();
     g_pending_package.clear();
     g_pending_fs_read_permissions.clear();
-    g_pending_network_permissions.clear();
     g_active_plugin_key.clear();
 }
 
@@ -589,50 +558,24 @@ void bind_python_api(pybind11::module_& m)
 
     m.def(
         "request_permissions",
-        [](const std::vector<std::string>& fs_read, const std::vector<std::string>& network) {
+        [](const std::vector<std::string>& fs_read) {
             if (g_active_plugin_key.empty())
                 throw py::value_error("request_permissions() called outside plugin discovery context");
 
-            // Validate and canonicalize everything before touching the pending registry, so a
-            // partially invalid call cannot leave a half-recorded request behind.
-            std::vector<std::string> normalized_network;
-            normalized_network.reserve(network.size());
-            for (const std::string& url : network) {
-                const std::string normalized = PluginAuditManager::normalize_network_url(url);
-                if (normalized.empty())
-                    throw py::value_error(
-                        "request_permissions(network=...) requires an http:// or https:// URL with a host");
-                if (std::find(normalized_network.begin(), normalized_network.end(), normalized) == normalized_network.end())
-                    normalized_network.push_back(normalized);
-            }
-
+            std::lock_guard<std::mutex> lock(g_registry_mutex);
+            auto& requested = g_pending_fs_read_permissions[g_active_plugin_key];
             for (const std::string& path : fs_read) {
                 if (path.empty())
                     throw py::value_error("request_permissions(fs_read=...) does not accept empty paths");
-            }
-
-            std::lock_guard<std::mutex> lock(g_registry_mutex);
-            auto& requested_fs = g_pending_fs_read_permissions[g_active_plugin_key];
-            for (const std::string& path : fs_read) {
-                if (std::find(requested_fs.begin(), requested_fs.end(), path) == requested_fs.end())
-                    requested_fs.push_back(path);
-            }
-
-            if (!normalized_network.empty()) {
-                auto& requested_network = g_pending_network_permissions[g_active_plugin_key];
-                for (const std::string& entry : normalized_network) {
-                    if (std::find(requested_network.begin(), requested_network.end(), entry) == requested_network.end())
-                        requested_network.push_back(entry);
-                }
+                if (std::find(requested.begin(), requested.end(), path) == requested.end())
+                    requested.push_back(path);
             }
         },
-        py::arg("fs_read") = std::vector<std::string>{}, py::arg("network") = std::vector<std::string>{},
-        R"pbdoc(Request permissions while OrcaSlicer loads your module.
+        py::arg("fs_read") = std::vector<std::string>{},
+        R"pbdoc(Request filesystem read permissions while OrcaSlicer loads your module.
 
-`fs_read` lists filesystem paths to read. `network` lists http(s) URLs; each is reduced to its
-scheme and host, so one grant covers every path, query and port on that host. The host presents
-the requests to the user after register_capabilities() returns. Denying a request aborts the
-plugin load.)pbdoc");
+The host presents the request to the user after register_capabilities() returns. Denying the
+request aborts the plugin load.)pbdoc");
 
     m.def("plugin", [](py::object cls) {
         if (g_active_plugin_key.empty())

src/slic3r/plugin/probe/NanoSvgImplementation.cpp

@@ -0,0 +1,4 @@
+// libslic3r references NanoSVG without carrying its header-only implementation. This probe links
+// libslic3r without the GUI BitmapCache.cpp that supplies the implementation in the application.
+#define NANOSVG_IMPLEMENTATION
+#include "nanosvg/nanosvg.h"

src/slic3r/plugin/probe/PluginAuditManagerHeadless.cpp

@@ -0,0 +1,32 @@
+// Headless replacement for the GUI permission front end. The probe installs an observation
+// observer, so the audit hook records and returns before reaching this seam. If that observer is
+// ever absent, permission decisions fail closed instead of consulting GUI or install state.
+
+#include "slic3r/plugin/PluginAuditManagerInternal.hpp"
+
+#include <boost/log/trivial.hpp>
+
+#include <string>
+#include <vector>
+
+namespace Slic3r::plugin_audit {
+
+bool request_filesystem_read_permissions(const std::string&              plugin_key,
+                                         const std::vector<std::string>& paths)
+{
+    BOOST_LOG_TRIVIAL(warning) << "[PROBE] Refusing filesystem read permission request for " << plugin_key
+                               << " (" << paths.size() << " path(s)): the headless probe does not evaluate grants";
+    return false;
+}
+
+int decide_event(PluginAuditManager&             mgr,
+                 const std::string&              event_name,
+                 AuditEventCategory              category,
+                 const std::vector<std::string>& targets)
+{
+    (void) category;
+    (void) targets;
+    return report_denied(mgr, event_name, {false, "permission decisions are unavailable in the headless probe"});
+}
+
+} // namespace Slic3r::plugin_audit

src/slic3r/plugin/probe/PluginHostProbe.cpp

@@ -0,0 +1,75 @@
+// Probe-only `orca.host` registration. The GUI-free domains use the production bindings; the
+// domains that need a live GUI application, main window or preset bundle are exposed as explicit
+// unsupported submodules instead of being compiled (and linked) into the probe.
+//
+// A plugin that touches one of those domains fails its own callback with a clear message; the
+// failure is recorded by the probe's callback report rather than becoming a link dependency.
+
+#include "slic3r/plugin/host/PluginHost.hpp"
+#include "slic3r/plugin/host/PluginHostBindings.hpp"
+
+#include <pybind11/pybind11.h>
+#include <pybind11/pytypes.h>
+
+#include <stdexcept>
+#include <string>
+
+namespace py = pybind11;
+
+namespace Slic3r {
+namespace {
+
+void add_unavailable_domain(py::module_& host, const char* name, const char* description)
+{
+    py::module_ domain = host.def_submodule(name, description);
+    const std::string prefix = std::string("orca.host.") + name + ".";
+    domain.attr("__getattr__") = py::cpp_function([prefix](const std::string& attribute) -> py::object {
+        throw std::runtime_error(prefix + attribute +
+                                 " is not available in the headless plugin permission probe because it needs the GUI application");
+    });
+}
+
+void add_unavailable_function(py::module_& host, const char* name)
+{
+    // Production registers these in PluginHostApp::register_app(). Do not overwrite a slot that
+    // another registrar already claimed (the model domain binds the Model class through
+    // register_model); the probe only fills the GUI-backed accessors that are absent here.
+    if (py::hasattr(host, name))
+        return;
+
+    const std::string detail = std::string("orca.host.") + name +
+                               " is not available in the headless plugin permission probe because it needs the GUI application";
+    host.def(name, [detail](py::args, py::kwargs) -> py::object { throw std::runtime_error(detail); }, detail.c_str());
+}
+
+} // namespace
+
+void PluginHost::RegisterBindings(py::module_& module)
+{
+    auto host = module.def_submodule("host", "Host application API");
+
+    // Value types first so the docstring signatures of later registrars resolve to the bound names.
+    host_bindings::register_geometry(host);
+    host_bindings::register_mesh(host);
+    host_bindings::register_model(host);
+    host_bindings::register_slicing(host);
+
+    // These domains are backed by the live GUI, its Plater/MainFrame and the preset bundle.
+    add_unavailable_domain(host, "presets", "Preset bundle access (headless probe: unavailable)");
+    add_unavailable_domain(host, "app", "Live application and Plater access (headless probe: unavailable)");
+    add_unavailable_domain(host, "ui", "Native dialogs and HTML windows (headless probe: unavailable)");
+    for (const char* name : {"plater", "model", "preset_bundle", "app_info", "gl_info", "selected_printer"})
+        add_unavailable_function(host, name);
+
+    // Storage needs the PluginManager registry, which is not part of the headless probe.
+    auto plugin_host = host.def_submodule("plugin", "Plugin host API (headless probe: storage unavailable)");
+    plugin_host.def("storage", []() -> std::string {
+        throw std::runtime_error("orca.host.plugin.storage() is not available in the headless plugin permission probe");
+    }, "Return the installed folder of the current plugin.");
+    plugin_host.attr("__getattr__") = py::cpp_function([](const std::string& attribute) -> py::object {
+        throw std::runtime_error("orca.host.plugin." + attribute +
+                                 " is not available in the headless plugin permission probe");
+    });
+}
+
+} // namespace Slic3r

src/slic3r/plugin/probe/PluginProbeConfig.cpp

@@ -0,0 +1,32 @@
+// Minimal replacement for the config API PythonPluginBridge binds into `orca`.
+//
+// The production implementation (PluginConfig.cpp) resolves presets, reads the sidebar's effective
+// config and writes config.json through PluginManager, all of which pull in the GUI and the
+// registry. The probe has neither: a capability reports an empty config, an empty version and a
+// refused save. That keeps the bridge's Python surface intact without pretending to reproduce
+// application state the probe does not have.
+
+#include "slic3r/plugin/PluginConfig.hpp"
+#include "slic3r/plugin/PythonPluginInterface.hpp"
+
+#include <nlohmann/json.hpp>
+
+#include <string>
+
+namespace Slic3r {
+
+nlohmann::json capability_get_config(const PluginCapabilityInterface&)
+{
+    return nlohmann::json::object();
+}
+
+std::string capability_get_config_version(const PluginCapabilityInterface&) { return {}; }
+
+bool capability_save_config(const PluginCapabilityInterface&, const nlohmann::json&) { return false; }
+
+std::string PluginConfig::capability_type_label(PluginCapabilityType type)
+{
+    return plugin_capability_type_display_name(type);
+}
+
+} // namespace Slic3r

tests/slic3rutils/test_plugin_audit.cpp

@@ -3,11 +3,13 @@
 #include <boost/system/error_code.hpp>
 #include <catch2/catch_all.hpp>
 
+#include <cstddef>
 #include <libslic3r/Utils.hpp>
 #include <libslic3r/libslic3r.h>         // GCODEVIEWER_APP_KEY, SLIC3R_APP_KEY (via libslic3r_version.h)
 #include <slic3r/plugin/PluginAuditManager.hpp>
 #include <slic3r/plugin/PluginFsUtils.hpp>
 #include <slic3r/plugin/PluginManager.hpp>
+#include <slic3r/plugin/PluginProbeCollector.hpp>
 #include <slic3r/plugin/PythonInterpreter.hpp>
 #include <slic3r/plugin/PythonPluginBridge.hpp>
 #include <slic3r/plugin/PythonPluginInterface.hpp>
@@ -32,6 +34,7 @@
 #include <pybind11/pytypes.h>
 #include <pybind11/stl.h>
 
+#include <algorithm>
 #include <fstream>
 #include <functional>
 #include <ios>
@@ -67,9 +70,29 @@ void seed_denied_keywords()
         mgr.add_denied_path_keyword(keyword);
 }
 
+// Installs the record-only observer for a test and always clears it, so a failed CHECK cannot
+// leave a callback pointing at a destroyed collector for the next test in this process.
+struct ScopedTestObservationObserver
+{
+    explicit ScopedTestObservationObserver(PluginProbeCollector& collector)
+        : m_collector(collector)
+    {
+        PluginAuditManager::instance().set_observation_observer(
+            [this](const AuditObservation& observation) { m_collector.record(observation); });
+    }
+
+    ~ScopedTestObservationObserver() { PluginAuditManager::instance().clear_observation_observer(); }
+
+    ScopedTestObservationObserver(const ScopedTestObservationObserver&)            = delete;
+    ScopedTestObservationObserver& operator=(const ScopedTestObservationObserver&) = delete;
+
+private:
+    PluginProbeCollector& m_collector;
+};
+
 } // namespace
 
-TEST_CASE("Plugin audit denies app config and token filenames anywhere", "[audit]")
+TEST_CASE("Plugin audit denies host-managed filenames anywhere", "[audit]")
 {
     seed_denied_names();
     const PluginAuditManager& mgr = PluginAuditManager::instance();
@@ -81,6 +104,7 @@ TEST_CASE("Plugin audit denies app config and token filenames anywhere", "[audit
         CHECK(mgr.is_denied_filename(fs::path(SLIC3R_APP_KEY ".ini")));
         CHECK(mgr.is_denied_filename(fs::path(GCODEVIEWER_APP_KEY ".ini")));
         CHECK(mgr.is_denied_filename(fs::path(secret_constants::USER_SECRET_FILENAME)));
+        CHECK(mgr.is_denied_filename(fs::path(".install_state.json")));
     }
 
     SECTION("companions holding the same secrets are denied by the prefix rule")
@@ -136,6 +160,7 @@ TEST_CASE("Plugin audit deny beats allowed roots", "[audit]")
 
     const fs::path conf  = fs::path(data_dir()) / (SLIC3R_APP_KEY ".conf");
     const fs::path token = fs::path(data_dir()) / secret_constants::USER_SECRET_FILENAME;
+    const fs::path install_state = fs::path(data_dir()) / "plugins" / "example" / ".install_state.json";
 
     SECTION("a non-denied file inside the allowed root is writable (root really grants writes)")
     {
@@ -176,6 +201,17 @@ TEST_CASE("Plugin audit deny beats allowed roots", "[audit]")
         CHECK_FALSE(decision.allowed);
     }
 
+    SECTION("plugin install state is blocked for reads and writes despite the allowed root")
+    {
+        AuditDecision read_decision = mgr.check_open(install_state.string(), "r");
+        CHECK_FALSE(read_decision.allowed);
+        CHECK(read_decision.reason == "denied filename");
+
+        AuditDecision write_decision = mgr.check_open(install_state.string(), "w");
+        CHECK_FALSE(write_decision.allowed);
+        CHECK(write_decision.reason == "denied filename");
+    }
+
     SECTION("a traversal path resolving to the config is blocked")
     {
         const fs::path traversal = fs::path(data_dir()) / "plugins" / ".." / (SLIC3R_APP_KEY ".conf");
@@ -351,93 +387,6 @@ TEST_CASE("Plugin audit a read-only allowed root blocks writes but not reads", "
     }
 }
 
-TEST_CASE("Plugin audit network permissions match by scheme and host", "[audit]")
-{
-    SECTION("a URL is reduced to its scheme and host")
-    {
-        CHECK(PluginAuditManager::normalize_network_url("https://API.Example.com:8443/v1/items?page=2#top") ==
-              "https://api.example.com");
-        CHECK(PluginAuditManager::normalize_network_url("http://example.com") == "http://example.com");
-        CHECK(PluginAuditManager::normalize_network_url("https://[2001:db8::1]:443/path") == "https://[2001:db8::1]");
-    }
-
-    SECTION("non-http schemes and targets without a scheme are not network URLs")
-    {
-        CHECK(PluginAuditManager::normalize_network_url("ftp://example.com").empty());
-        CHECK(PluginAuditManager::normalize_network_url("api.example.com").empty());
-        CHECK(PluginAuditManager::normalize_network_url("https://").empty());
-    }
-
-    SECTION("a URL target matches the same scheme and host regardless of path and port")
-    {
-        const std::vector<std::string> granted{"https://api.example.com"};
-        CHECK(PluginAuditManager::network_permission_matches(granted, "https://api.example.com/v1/items?page=2"));
-        CHECK(PluginAuditManager::network_permission_matches(granted, "https://api.example.com:8443/upload"));
-    }
-
-    SECTION("canonical host grants are broad but persisted full-URL grants stay exact")
-    {
-        const std::vector<std::string> declared_host{"https://api.example.com"};
-        CHECK(PluginAuditManager::network_permission_matches(declared_host, "https://api.example.com/v1"));
-
-        const std::vector<std::string> saved_url{"https://api.example.com/v1"};
-        CHECK(PluginAuditManager::network_permission_matches(saved_url, "https://api.example.com/v1"));
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(saved_url, "https://api.example.com/v2"));
-    }
-
-    SECTION("a URL target does not match a different host or a different scheme")
-    {
-        const std::vector<std::string> granted{"https://api.example.com"};
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(granted, "https://evil.example.com/v1"));
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(granted, "http://api.example.com/v1"));
-    }
-
-    SECTION("a bare host target matches the host of a grant")
-    {
-        const std::vector<std::string> granted{"https://api.example.com"};
-        CHECK(PluginAuditManager::network_permission_matches(granted, "api.example.com"));
-        CHECK(PluginAuditManager::network_permission_matches(granted, "api.example.com:443"));
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(granted, "other.example.com"));
-    }
-
-    SECTION("legacy persisted address tuples keep matching their host")
-    {
-        const std::vector<std::string> legacy_granted{"('api.example.com', 443)"};
-        CHECK(PluginAuditManager::network_permission_matches(legacy_granted, "api.example.com"));
-
-        const std::vector<std::string> granted{"https://api.example.com"};
-        CHECK(PluginAuditManager::network_permission_matches(granted, "('api.example.com', 443)"));
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(granted, "('93.184.216.34', 443)"));
-    }
-
-    SECTION("an IPv6 literal matches across bracketed and bare forms")
-    {
-        const std::vector<std::string> granted{"https://[2001:db8::1]"};
-        CHECK(PluginAuditManager::network_permission_matches(granted, "2001:db8::1"));
-        CHECK(PluginAuditManager::network_permission_matches(granted, "[2001:db8::1]:443"));
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(granted, "2001:db8::2"));
-    }
-
-    SECTION("a non-http URL only matches an exact grant")
-    {
-        const std::vector<std::string> granted{"ftp://example.com/file"};
-        CHECK(PluginAuditManager::network_permission_matches(granted, "ftp://example.com/file"));
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(granted, "ftp://example.com/other"));
-
-        const std::vector<std::string> https{"https://api.example.com"};
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(https, "ftp://api.example.com/file"));
-    }
-
-    SECTION("an empty grant list or an empty target never matches")
-    {
-        const std::vector<std::string> granted{};
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(granted, "https://api.example.com"));
-
-        const std::vector<std::string> any{"https://api.example.com"};
-        CHECK_FALSE(PluginAuditManager::network_permission_matches(any, ""));
-    }
-}
-
 TEST_CASE("Plugin audit a scoped root can also be registered read-only", "[audit]")
 {
     ScopedDataDir data_dir_guard("plugin-audit-scoped-readonly");
@@ -741,6 +690,71 @@ const char* const PLUGIN = "AuditPlugin";
 
 } // namespace
 
+TEST_CASE("Probe phase scope restores the previous phase", "[audit]")
+{
+    PluginAuditManager& mgr = PluginAuditManager::instance();
+    mgr.set_current_audit_phase("outer");
+    {
+        ScopedPluginAuditPhase inner("inner");
+        CHECK(mgr.current_audit_phase() == "inner");
+    }
+    CHECK(mgr.current_audit_phase() == "outer");
+    mgr.clear_current_audit_phase();
+    CHECK(mgr.current_audit_phase().empty());
+}
+
+TEST_CASE("Record-only probe observations bypass prompts and retain phase attribution", "[audit][Python]")
+{
+    AuditHarness harness;
+    if (!harness.initialized)
+        SKIP("Bundled Python interpreter unavailable: " + PythonInterpreter::instance().last_error());
+    harness.add_plugin(PLUGIN);
+    py::gil_scoped_acquire gil;
+    PythonSide              python(harness);
+
+    PluginProbeCollector          collector;
+    ScopedTestObservationObserver observer(collector);
+
+    // A declared read permission is recorded and allowed, but must not be written to the sidecar.
+    {
+        ScopedPluginAuditContext context(PLUGIN);
+        CHECK(PluginAuditManager::instance().request_filesystem_read_permissions(PLUGIN, {"/tmp/probe-declared"}));
+    }
+
+    {
+        ScopedPluginAuditPhase phase("probe:callback");
+        python.run_as(PLUGIN, "outcome = attempt(lambda: open(PRIVATE).close())");
+    }
+
+    CHECK(python.str("outcome") == "ok");
+    CHECK(harness.prompts.empty());
+    CHECK(harness.saved_permissions(PLUGIN).fs_read.empty());
+
+    const std::vector<AuditObservation> observations = collector.observations();
+    const auto                          open_event   = std::find_if(
+        observations.begin(), observations.end(), [](const AuditObservation& observation) {
+            return observation.event_name == "open";
+        });
+    REQUIRE(open_event != observations.end());
+    CHECK(open_event->plugin_key == PLUGIN);
+    CHECK(open_event->phase == "probe:callback");
+    CHECK(open_event->category == "FsRead");
+    CHECK(open_event->continued);
+    CHECK(std::find(open_event->targets.begin(), open_event->targets.end(), python.str("PRIVATE")) !=
+          open_event->targets.end());
+
+    const auto declared = std::find_if(observations.begin(), observations.end(), [](const AuditObservation& observation) {
+        return observation.event_name == "orca.request_permissions";
+    });
+    REQUIRE(declared != observations.end());
+    CHECK(declared->category == "FsRead");
+    CHECK(std::find(declared->targets.begin(), declared->targets.end(), "/tmp/probe-declared") != declared->targets.end());
+
+    const nlohmann::json summary = collector.summary();
+    CHECK(summary["categories"].contains("FsRead"));
+    CHECK(summary["observed_event_count"].get<std::size_t>() == observations.size());
+}
+
 TEST_CASE("A saved request grant covers the request's own connection in a later session", "[audit][Python]")
 {
     AuditHarness harness;