Introduce context compaction: optimize conversation context persistence, reduce redundant tokens, and enhance summary handling.

test/app.test.js

@@ -754,10 +754,10 @@ test("chat context summary rolls up older messages into future payloads", async
     let latestPayload = [];
     let summaryModel = null;
     const modelService = {
-        async generateReply(model, messagesPayload) {
-            if (messagesPayload.some((message) => message.content.includes("Merge the previous summary"))) {
+        async generateReply(model, messagesPayload, options = {}) {
+            if (options.format && messagesPayload.some((message) => message.content.includes("Newly expired conversation records"))) {
                 summaryModel = model;
-                return "Summary: user greeted the assistant and asked for continuity.";
+                return JSON.stringify({summary: "user greeted the assistant and asked for continuity.", current_goals: [], important_facts: ["user greeted the assistant"], decisions: [], constraints: [], technical_state: [], open_tasks: [], problems_and_solutions: [], user_preferences: [], important_exact_values: []});
             }
             latestPayload = messagesPayload;
             replyCount += 1;
@@ -781,7 +781,7 @@ test("chat context summary rolls up older messages into future payloads", async
     };
     const server = await startTestServer({
         modelService,
-        config: {chatHistoryLimit: 2, chatSummaryUpdateEveryMessages: 2}
+        config: {chatHistoryLimit: 2, chatSummaryUpdateEveryMessages: 2, contextModel: "configured:context", contextCompactionTriggerTokens: 1, contextCompactionRecentTokens: 1, contextCompactionMinMessages: 2}
     });
     const jar = new CookieJar();
 
@@ -812,7 +812,7 @@ test("chat context summary rolls up older messages into future payloads", async
 
     assert.ok(latestPayload.some((message) => message.role === "system" && message.content.includes("CONVERSATION SUMMARY")));
     assert.ok(latestPayload.some((message) => message.content.includes("user greeted the assistant")));
-    assert.equal(summaryModel, "nomic-embed-text:latest");
+    assert.equal(summaryModel, "configured:context");
 
     await server.close();
 });