refactor: add to template agent roles

sources/agents/AgentFactory.cpp

@@ -248,6 +248,15 @@ void AgentFactory::setModelOverride(const QString &agentName, const QString &mod
     saveModelOverrides();
 }
 
+QString AgentFactory::effectiveModel(const QString &agentName) const
+{
+    const QString ov = m_modelOverrides.value(agentName);
+    if (!ov.isEmpty())
+        return ov;
+    const AgentConfig *cfg = configByName(agentName);
+    return cfg ? cfg->model : QString();
+}
+
 namespace {
 QString modelOverridesPath()
 {

sources/agents/AgentFactory.hpp

@@ -59,6 +59,10 @@ public:
     [[nodiscard]] QString modelOverride(const QString &agentName) const;
     void setModelOverride(const QString &agentName, const QString &model);
 
+    // The model that will actually be sent for this agent: the settings
+    // override if set, otherwise the agent TOML's default `model`.
+    [[nodiscard]] QString effectiveModel(const QString &agentName) const;
+
     [[nodiscard]] Providers::ProviderInstanceFactory *instanceFactory() const noexcept;
     [[nodiscard]] Providers::ProviderSecretsStore *secretsStore() const noexcept;
 

sources/agents/ContextRenderer.cpp

@@ -8,8 +8,12 @@
 #include <QDir>
 #include <QFile>
 #include <QFileInfo>
+#include <QJsonDocument>
+#include <QJsonObject>
 #include <QStringList>
 
+#include <coreplugin/icore.h>
+
 #include <filesystem>
 
 #include <inja/inja.hpp>
@@ -155,6 +159,45 @@ void registerStringHelpers(inja::Environment &env)
     });
 }
 
+// Read a role's system prompt from the role JSON written by the settings Roles
+// UI (AgentRolesManager). Returns "" if the role doesn't exist.
+std::string roleSystemPrompt(const QString &id)
+{
+    if (id.isEmpty())
+        return {};
+    const QString path
+        = Core::ICore::userResourcePath(
+              QStringLiteral("qodeassist/agent_roles/%1.json").arg(id))
+              .toFSPathString();
+    QFile f(path);
+    if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        qWarning("[QodeAssist] agent_role: role '%s' not found at %s",
+                 qUtf8Printable(id), qUtf8Printable(path));
+        return {};
+    }
+    return QJsonDocument::fromJson(f.readAll())
+        .object()
+        .value("systemPrompt")
+        .toString()
+        .toStdString();
+}
+
+// Building blocks for composing a profile's `system_prompt` (alongside
+// read_file/file_exists):
+//   {{ agent_role() }}      — the runtime-selected role (Bindings.roleId, which
+//                             the chat sets; falls back to "developer")
+//   {{ agent_role("<id>") }} — a specific role by id
+void registerAgentRole(inja::Environment &env, const Bindings &b)
+{
+    const QString runtimeRole = b.roleId.isEmpty() ? QStringLiteral("developer") : b.roleId;
+    env.add_callback("agent_role", 0, [runtimeRole](inja::Arguments &) -> nlohmann::json {
+        return roleSystemPrompt(runtimeRole);
+    });
+    env.add_callback("agent_role", 1, [](inja::Arguments &args) -> nlohmann::json {
+        return roleSystemPrompt(QString::fromStdString(args.at(0)->get<std::string>()));
+    });
+}
+
 void registerSandbox(inja::Environment &env)
 {
     
@@ -183,6 +226,7 @@ QString render(const QString &templateSource, const Bindings &bindings, QString
     registerFileExists(env, bindings);
     registerReadDir(env, bindings);
     registerStringHelpers(env);
+    registerAgentRole(env, bindings);
 
     inja::Template tpl;
     try {

sources/agents/ContextRenderer.hpp

@@ -12,6 +12,9 @@ struct Bindings
 {
     QString projectDir;
     QString homeDir;
+    // Role id selected at runtime (e.g. in the chat). Used by the no-arg
+    // `{{ agent_role() }}` template callback; empty falls back to "developer".
+    QString roleId;
 };
 
 QString render(const QString &templateSource, const Bindings &bindings,

sources/agents/agents.qrc

@@ -12,7 +12,6 @@
         <file>partials/google_part.jinja</file>
         <file>partials/ollama_messages.jinja</file>
 
-        <file>chat_base.toml</file>
         <file>openai_base_chat.toml</file>
         <file>openai_responses_base.toml</file>
         <file>anthropic_base_chat.toml</file>

sources/agents/anthropic_base_chat.toml

@@ -3,16 +3,18 @@ schema_version = 1
 name        = "Anthropic Base Chat"
 description = "Anthropic Messages API request body (/v1/messages). Abstract — extend it and set model."
 abstract    = true
-extends     = "Chat Base"
 
 provider_instance = "Claude"
 endpoint          = "/v1/messages"
 enable_tools      = true
 tags = ["chat", "claude", "anthropic", "cloud"]
 
+system_prompt = """{{ agent_role() }}"""
+
 [body]
 max_tokens  = 8192
 temperature = 1
+stream      = true
 system   = """{% if existsIn(ctx, "system_prompt") %}{{ tojson(ctx.system_prompt) }}{% endif %}"""
 messages = """
 [ {% include "partials/anthropic_messages.jinja" %} ]

sources/agents/chat_base.toml

@@ -1,16 +0,0 @@
-schema_version = 1
-
-name        = "Chat Base"
-description = "Shared system prompt for coding-chat agents. Abstract — not selectable."
-abstract    = true
-
-system_prompt = """
-You are a helpful coding assistant integrated into Qt Creator.
-Answer concisely. Prefer concrete diffs or minimal patches over rewriting
-whole files. Use markdown code blocks with language tags.
-
-{% if file_exists("${PROJECT_DIR}/README.md") %}
-## Project README.md
-{{ read_file("${PROJECT_DIR}/README.md") }}
-{% endif %}
-"""

sources/agents/google_base_chat.toml

@@ -3,12 +3,13 @@ schema_version = 1
 name        = "Google Base Chat"
 description = "Google Gemini generateContent request body. Abstract — extend it and set model/endpoint."
 abstract    = true
-extends     = "Chat Base"
 
 provider_instance = "Google AI"
 enable_tools      = true
 tags = ["chat", "gemini", "google", "cloud"]
 
+system_prompt = """{{ agent_role() }}"""
+
 [body]
 system_instruction = """{% if existsIn(ctx, "system_prompt") %}{ "parts": [ { "text": {{ tojson(ctx.system_prompt) }} } ] }{% endif %}"""
 contents = """

sources/agents/google_gemini_chat.toml

@@ -4,7 +4,7 @@ extends     = "Google Base Chat"
 name        = "Gemini Chat"
 description = "Google Gemini 2.5 Flash (generateContent API) — coding chat with thinking."
 
-endpoint = "/models/gemini-2.5-flash:streamGenerateContent?alt=sse"
+endpoint = "/models/${MODEL}:streamGenerateContent?alt=sse"
 model    = "gemini-2.5-flash"
 
 enable_thinking = true

sources/agents/ollama_base_chat.toml

@@ -3,12 +3,13 @@ schema_version = 1
 name        = "Ollama Base Chat"
 description = "Ollama native /api/chat request body. Abstract — extend it and set model/options."
 abstract    = true
-extends     = "Chat Base"
 
 provider_instance = "Ollama (Native)"
 endpoint          = "/api/chat"
 tags = ["ollama", "local"]
 
+system_prompt = """{{ agent_role() }}"""
+
 [body]
 stream   = true
 messages = """

sources/agents/openai_base_chat.toml

@@ -3,16 +3,18 @@ schema_version = 1
 name        = "OpenAI Base Chat"
 description = "OpenAI Chat Completions request body. Abstract — extend it and set provider/endpoint/model."
 abstract    = true
-extends     = "Chat Base"
 
 provider_instance = "OpenAI (Chat Completions)"
 endpoint          = "/chat/completions"
 enable_tools      = true
 tags = ["chat", "openai", "cloud"]
 
+system_prompt = """{{ agent_role() }}"""
+
 [body]
 max_tokens  = 8192
 temperature = 0.7
+stream      = true
 messages    = """
 [ {% include "partials/openai_messages.jinja" %} ]
 """

sources/agents/openai_responses_base.toml

@@ -3,16 +3,18 @@ schema_version = 1
 name        = "OpenAI Responses Base"
 description = "OpenAI Responses API request body (/responses). Abstract — extend it and set provider/endpoint/model."
 abstract    = true
-extends     = "Chat Base"
 
 provider_instance = "OpenAI (Responses API)"
 endpoint          = "/responses"
 enable_tools      = true
 tags = ["chat", "openai", "responses", "cloud"]
 
+system_prompt = """{{ agent_role() }}"""
+
 [body]
 max_output_tokens = 8192
 temperature       = 0.7
+stream            = true
 instructions = """{% if existsIn(ctx, "system_prompt") %}{{ tojson(ctx.system_prompt) }}{% endif %}"""
 input = """
 [ {% include "partials/openai_responses_input.jinja" %} ]