feat(logs): Improve logs streaming and backlog delivery; add CLI filters and ndjson output

ts/daemon/tspm.daemon.ts

@@ -298,6 +298,54 @@ export class TspmDaemon {
       },
     );
 
+    // Stream backlog logs and let client subscribe to live topic separately
+    this.ipcServer.onMessage(
+      'logs:subscribe',
+      async (
+        request: RequestForMethod<'logs:subscribe'>,
+        clientId: string,
+      ) => {
+        const id = toProcessId(request.id);
+        // Determine backlog set
+        const allLogs = await this.tspmInstance.getLogs(id);
+        let filtered = allLogs;
+        if (request.types && request.types.length) {
+          filtered = filtered.filter((l) => request.types!.includes(l.type));
+        }
+        if (request.sinceTime && request.sinceTime > 0) {
+          filtered = filtered.filter(
+            (l) => new Date(l.timestamp).getTime() >= request.sinceTime!,
+          );
+        }
+        const lines = request.lines && request.lines > 0 ? request.lines : 0;
+        if (lines > 0 && filtered.length > lines) {
+          filtered = filtered.slice(-lines);
+        }
+
+        // Send backlog entries directly to the requesting client as topic messages
+        // in small batches to avoid overwhelming the transport or client.
+        const chunkSize = 200;
+        for (let i = 0; i < filtered.length; i += chunkSize) {
+          const chunk = filtered.slice(i, i + chunkSize);
+          await Promise.allSettled(
+            chunk.map((entry) =>
+              this.ipcServer.sendToClient(
+                clientId,
+                `topic:logs.backlog.${id}`,
+                {
+                  ...entry,
+                  timestamp: new Date(entry.timestamp).getTime(),
+                },
+              ),
+            ),
+          );
+          // Yield a bit between chunks
+          await new Promise((r) => setTimeout(r, 5));
+        }
+        return { ok: true } as any;
+      },
+    );
+
     // Resolve target (id:n | name:foo | numeric string) to ProcessId
     this.ipcServer.onMessage(
       'resolveTarget',