feat(FN-4393): docs, changeset, and verification fixes

Commits merged:
- feat(FN-4393): complete Step 6 — docs, changeset, and verification fixes

Files changed:
packages/core/src/types.ts             | 12 ++++++------
 packages/engine/src/agent-heartbeat.ts |  5 ++++-
 2 files changed, 10 insertions(+), 7 deletions(-)

Fusion-Task-Id: FN-4393

Fusion-Task-Lineage: 3615215d-9caa-4402-9258-a5a5de137dd6

packages/core/src/types.ts

@@ -1976,6 +1976,12 @@ export interface GlobalSettings {
   researchGlobalFetchTimeoutMs?: number;
   /** User-Agent header for HTTP requests made by research providers. Default: "FusionResearchBot/1.0". */
   researchGlobalUserAgent?: string;
+  /** Agent memory prompt inclusion mode baseline for all projects/agents.
+   *  - "full": inline full curated memory content into prompts (default)
+   *  - "index": include only a compact memory index, then fetch on demand via memory tools
+   *  - "off": omit agent-memory prompt sections entirely
+   */
+  agentMemoryInclusionMode?: AgentMemoryInclusionMode;
   /** Global-scoped remote access configuration persisted in `~/.fusion/settings.json`.
    *  Stores both provider configs, active provider selection, token strategy,
    *  and lifecycle restart metadata for remote tunnel orchestration. */
@@ -2517,12 +2523,6 @@ export interface ProjectSettings {
   /** Reference to a named script in the scripts map that runs before task execution.
    *  Used for pre-task setup like environment preparation. */
   setupScript?: string;
-  /** Agent memory prompt inclusion mode baseline for all projects/agents.
-   *  - "full": inline full curated memory content into prompts (default)
-   *  - "index": include only a compact memory index, then fetch on demand via memory tools
-   *  - "off": omit agent-memory prompt sections entirely
-   */
-  agentMemoryInclusionMode?: AgentMemoryInclusionMode;
   /** When true, enables periodic AI-powered extraction of insights from working memory
    *  into a distilled long-term memory file. Creates an automation schedule that reads
    *  `.fusion/memory/MEMORY.md`, identifies patterns/principles/pitfalls, and writes to

packages/engine/src/agent-heartbeat.ts

@@ -2048,10 +2048,13 @@ export class HeartbeatMonitor {
 
         if (priorMemoryMode !== resolvedMemoryMode.mode) {
           const from = priorMemoryMode ? priorMemoryMode : "(initial)";
+          const runContextTaskId = typeof run.contextSnapshot?.taskId === "string"
+            ? run.contextSnapshot.taskId
+            : undefined;
           try {
             await this.store.appendRunLog(agentId, run.id, {
               timestamp: new Date().toISOString(),
-              taskId: taskId ?? run.taskId ?? "heartbeat",
+              taskId: taskId ?? runContextTaskId ?? "heartbeat",
               type: "text",
               text: `Agent memory inclusion mode: ${from} → ${resolvedMemoryMode.mode} (source: ${resolvedMemoryMode.source})`,
             });