Q54: later sessions see what earlier ones already did and where they failed

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/main/services/agent-run-loop.ts

@@ -4,7 +4,7 @@ import { completeGoalTool } from "./agent-goal-tools";
 import { executeWebTool, isWebTool, WEB_TOOLS } from "./agent-web-tools";
 import { executeWorkspaceTool, isWorkspaceTool, WORKSPACE_TOOLS } from "./agent-workspace-tools";
 import { canonicalMentionHandle } from "../../shared/mention-handles";
-import type { AgentTurnMessage, ToolDefinition } from "./provider-tool-turn";
+import type { AgentTurnMessage, ToolCall, ToolDefinition } from "./provider-tool-turn";
 import { isComposioTool, executeComposioTool } from "./composio/composio-tool-bridge";
 import { capToolOutput, compactToolHistory } from "./run-context-compaction";
 import { fitContextBudget } from "./context-budget";
@@ -23,6 +23,8 @@ export interface AgentRunLoopInput {
   pollNewMessages?: () => string | null;
   /** Called after each model turn the provider answered. */
   onModelTurn?: () => void;
+  /** Called with every executed tool call and its full output. */
+  onToolCompleted?: (call: ToolCall, output: string) => void;
   /** Input tokens the provider's context window leaves after the output reserve. */
   inputBudgetTokens: number;
 }
@@ -119,6 +121,7 @@ export async function runAgentLoop(deps: AgentRunLoopDeps, input: AgentRunLoopIn
           announceTaskAssignments: shouldAnnounceTaskAssignment(call, turn.toolCalls),
         });
       }
+      input.onToolCompleted?.(call, output);
       results.push({ toolCallId: call.id, toolName: call.name, output: capToolOutput(call.name, output) });
     }
     const followUp = input.pollNewMessages?.();

src/main/services/run-journal.ts

@@ -0,0 +1,46 @@
+import type { DatabaseSync } from "node:sqlite";
+import { createId } from "../../shared/ids";
+import type { ToolCall } from "./provider-tool-turn";
+
+/** Tools that only look; everything else changes the company or the world and is journaled. */
+const READ_ONLY_TOOLS = new Set([
+  "company_status", "fetch_url", "list_connectors", "list_documents", "list_files", "list_skills",
+  "read_attachment", "read_document", "read_file", "read_messages", "search_knowledge", "web_search",
+]);
+const JOURNAL_LINES = 40;
+const FIELD_CHARS = 160;
+
+/** Records a call that tried to change something, with its result, so later sessions build on it instead of repeating it. */
+export function recordRunAction(db: DatabaseSync, input: { orgId: string; runId: string; taskId: string; call: ToolCall; output: string }): void {
+  if (READ_ONLY_TOOLS.has(input.call.name)) return;
+  db.prepare(`
+    insert into run_actions(id, org_id, run_id, task_id, tool_name, arguments_excerpt, result_excerpt, created_at)
+    values (?, ?, ?, ?, ?, ?, ?, ?)
+  `).run(createId("rac"), input.orgId, input.runId, input.taskId, input.call.name,
+    clip(JSON.stringify(input.call.arguments)), clip(input.output.split("\n")[0] ?? ""), new Date().toISOString());
+}
+
+/** What earlier sessions (including an interrupted attempt of this run) already did on the task, and where the last one failed. */
+export function runJournalLines(db: DatabaseSync, taskId: string): string[] {
+  const actions = db.prepare(`
+    select tool_name, arguments_excerpt, result_excerpt from (
+      select tool_name, arguments_excerpt, result_excerpt, rowid as seq from run_actions where task_id = ? order by rowid desc limit ?
+    ) order by seq asc
+  `).all(taskId, JOURNAL_LINES) as Array<{ tool_name: string; arguments_excerpt: string; result_excerpt: string }>;
+  const lastFailure = db.prepare(`
+    select error_message from task_runs where task_id = ? and state in ('completed', 'failed') order by rowid desc limit 1
+  `).get(taskId) as { error_message: string | null } | undefined;
+  const lines: string[] = [];
+  if (actions.length > 0) {
+    lines.push("", "Earlier sessions on this task already made these calls; each shows its result. Do not redo the ones that succeeded; retry or fix only what failed:");
+    for (const action of actions) lines.push(`- ${action.tool_name}(${action.arguments_excerpt}) -> ${action.result_excerpt}`);
+  }
+  if (lastFailure?.error_message) {
+    lines.push("", `The last session on this task failed with: ${lastFailure.error_message}. Pick up from there instead of starting over.`);
+  }
+  return lines;
+}
+
+function clip(text: string): string {
+  return text.length > FIELD_CHARS ? `${text.slice(0, FIELD_CHARS)}...` : text;
+}

src/main/services/task-execution-service.ts

@@ -12,6 +12,7 @@ import { SkillService } from "./skill-service";
 import { runAgentLoop, runTools } from "./agent-run-loop";
 import type { RunModel } from "./skill-runtime";
 import { combineMidRunPolls, createGoalChangePoller } from "./goal-change-poller";
+import { recordRunAction, runJournalLines } from "./run-journal";
 import type { AgentToolContext } from "./agent-tools";
 import {
   buildAgentInstructions,
@@ -222,6 +223,7 @@ export class TaskExecutionService {
             handoffLines: renderTaskHandoff(this.db, orgId, task.handoff_json),
             knowledgeLines: relevantKnowledgeLines(this.db, { orgId, agentId: agent.id, projectId: task.project_id, goalId: task.goal_id, taskId: task.id }, `${task.title}\n${task.description}`),
             priorCompletedRuns: this.completedRunCount(task.id, runId),
+            journalLines: runJournalLines(this.db, task.id),
             subtasks: (this.db.prepare("select title, status = 'done' as done from tasks where parent_task_id = ? order by created_at").all(task.id) as Array<{ title: string; done: number }>)
               .map((row) => ({ title: row.title, done: row.done === 1 })),
             availableToolNames: runTools(externalTools).map((tool) => tool.name),
@@ -229,6 +231,7 @@ export class TaskExecutionService {
           toolContext,
           externalTools,
           onModelTurn: contextRecorder.commit,
+          onToolCompleted: (call, output) => recordRunAction(this.db, { orgId, runId, taskId: task.id, call, output }),
           inputBudgetTokens: inputBudgetTokens(provider.context_window_tokens),
           pollNewMessages: combineMidRunPolls(
             goalChanges,

src/main/services/task-prompts.ts

@@ -201,6 +201,8 @@ export function buildTaskPrompt(input: {
   knowledgeLines: string[];
   /** Completed runs this task already spent without reaching done. */
   priorCompletedRuns: number;
+  /** What earlier sessions on this task already did, and where the last one failed. */
+  journalLines: string[];
   /** Names of the tools the model can call this run. */
   availableToolNames: string[];
   /** Subtasks this task delegated; autonomously it only runs again once they are all done. */
@@ -277,6 +279,7 @@ export function buildTaskPrompt(input: {
       `The subtasks you delegated from this task are all done: ${input.subtasks.map((subtask) => subtask.title).join(", ")}. Check their results (read_messages, list_files, list_documents) against what this task needs, then close it, or create the follow-up work that is still missing.`,
     );
   }
+  lines.push(...input.journalLines);
   if (input.priorCompletedRuns > 0) {
     lines.push(
       "",