diff --git a/AGENTS.md b/AGENTS.md
index 0f8ef13..a876ff7 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -56,6 +56,8 @@ Determine the task type and apply the corresponding format:
 
 - [Critical defaults](guides/critical-defaults.md) - mandatory rules for every
   repository task.
+- [Git workflow](guides/git-workflow.md) - branch policy, PR-only workflow,
+  branch naming, and rules for AI agents before editing.
 - [Coding agent workflow](.claude/rules/delegation.md) - default workflow for
   all file-editing tasks (delegation, model routing, verification).
 - [Project overview](guides/project-overview.md) - domain model, public API
@@ -73,6 +75,7 @@ Determine the task type and apply the corresponding format:
 
 See [guides/critical-defaults.md](guides/critical-defaults.md) for the full
 list of mandatory pre-edit, compatibility, testing, and git rules.
+For branch and PR policy, also see [guides/git-workflow.md](guides/git-workflow.md).
 
 ## Provenance and Honesty
 
diff --git a/guides/critical-defaults.md b/guides/critical-defaults.md
index e8dc73d..b13ed1d 100644
--- a/guides/critical-defaults.md
+++ b/guides/critical-defaults.md
@@ -28,4 +28,4 @@ Mandatory rules for every repository task.
 
 ## Git
 
-- All changes reach `main` through PRs; do not push directly to `main` unless the user explicitly overrides this rule.
+See [Git workflow](git-workflow.md) for the full branch and PR policy.
diff --git a/include/kurlyk/http/HttpClient.hpp b/include/kurlyk/http/HttpClient.hpp
index c8b6db6..e199522 100644
--- a/include/kurlyk/http/HttpClient.hpp
+++ b/include/kurlyk/http/HttpClient.hpp
@@ -200,6 +200,21 @@ namespace kurlyk {
         void set_auth_provider(std::shared_ptr<http::auth::IAuthProvider> provider) {
             m_auth_provider = provider;
         }
+
+        /// \brief Removes the current authentication provider from this client.
+        void clear_auth_provider() {
+            m_auth_provider.reset();
+        }
+
+        /// \brief Returns whether this client has an active authentication provider.
+        bool has_auth_provider() const {
+            return m_auth_provider != nullptr;
+        }
+
+        /// \brief Returns the current authentication provider, or nullptr if none is set.
+        std::shared_ptr<http::auth::IAuthProvider> auth_provider() const {
+            return m_auth_provider;
+        }
 #endif
 
         /// \brief Assigns an existing rate limit to future requests by ID.
diff --git a/include/kurlyk/http/HttpRequestManager.hpp b/include/kurlyk/http/HttpRequestManager.hpp
index 68aa7f6..ebad7b5 100644
--- a/include/kurlyk/http/HttpRequestManager.hpp
+++ b/include/kurlyk/http/HttpRequestManager.hpp
@@ -239,8 +239,18 @@ namespace kurlyk {
                 if (callback) callback();
                 return;
             }
-            std::lock_guard<std::mutex> lock(m_mutex);
-            m_groups_to_cancel[group_id].push_back(std::move(callback));
+            bool invoke_now = false;
+            {
+                std::lock_guard<std::mutex> lock(m_mutex);
+                if (group_request_count_unlocked(group_id) == 0) {
+                    invoke_now = true;
+                } else {
+                    m_groups_to_cancel[group_id].push_back(std::move(callback));
+                }
+            }
+            if (invoke_now && callback) {
+                callback();
+            }
         }
 
         /// \brief Processes all requests in the manager.
diff --git a/tests/integration/http_client_wait_requests_main.cpp b/tests/integration/http_client_wait_requests_main.cpp
index 4413177..017ebce 100644
--- a/tests/integration/http_client_wait_requests_main.cpp
+++ b/tests/integration/http_client_wait_requests_main.cpp
@@ -321,6 +321,26 @@ int main() {
         client.reset();
     }
 
+    // --- Test 9: wait_requests() on empty group returns immediately ---
+    {
+        ProcessorGuard pg;
+        auto client = std::make_unique<kurlyk::HttpClient>(base_url);
+        auto t0 = std::chrono::steady_clock::now();
+        client->wait_requests();
+        auto dt = std::chrono::steady_clock::now() - t0;
+        require(dt < std::chrono::milliseconds(50),
+                "wait_requests() on empty group must return immediately");
+        client.reset();
+    }
+
+    // --- Test 10: wait_requests_for() on empty group returns true immediately ---
+    {
+        auto client = std::make_unique<kurlyk::HttpClient>(base_url);
+        bool done = client->wait_requests_for(std::chrono::milliseconds(10));
+        require(done, "wait_requests_for() on empty group must return true immediately");
+        client.reset();
+    }
+
     server.stop();
     server_thread.join();