feat(core): node veth idempotency, multi-node cdp ports, brain last ids persistence, and pulse interval variable

bin/self_main_loop.py

@@ -574,9 +574,10 @@ def read_brain_messages(agent, sidechat_name, since_ts):
 
     Resolves sidechat_name -> UUID via dm (never hardcoded; UUIDs rotate),
     reads via the same muse_hybrid primitive the loop uses, returns
-    [{"sender", "text", "ts"}]. Tracks last message_id per (agent, name);
-    first run anchors at newest with no backfill (same policy as
-    new_messages for main chat).
+    [{"sender", "text", "ts"}]. Tracks last message_id per (agent, name)
+    in the module cache, which do_check() persists to the watermark JSON
+    (brain.brain_last_ids) across ticks. First run anchors at newest with
+    no backfill (same policy as new_messages for main chat).
     """
     try:
         import dm
@@ -635,6 +636,14 @@ def do_check(only_agent=None):
     try:
         from brain import BrainWorkspace
         brain = BrainWorkspace(STATE_FILE, read_fn=read_brain_messages)
+        # Restore persisted brain message IDs so !loop commands posted
+        # between ticks are not missed (module cache is per-process).
+        for k, v in (brain.state.get("brain_last_ids") or {}).items():
+            try:
+                ag, nm = k.split("|", 1)
+                _BRAIN_LAST_IDS[(ag, nm)] = v
+            except ValueError:
+                pass
         intake = brain.intake()
         if intake.get("commands"):
             log("brain: %d commands, %d acks, %d ignored-senders" % (
@@ -787,6 +796,13 @@ def do_check(only_agent=None):
                 watermarks=wm_epochs,
                 health=health,
             )
+            # Persist brain message IDs for the next tick.
+            try:
+                brain.state["brain_last_ids"] = {
+                    "%s|%s" % k: v for k, v in _BRAIN_LAST_IDS.items()
+                    if v is not None}
+            except Exception:
+                pass
             brain.save()
         except Exception as e:
             log("brain post_thinking failed (non-fatal): %r" % e)