feat(SwingSet): Echo kernel console output to the slog (#10925)

Fixes #10776

## Description
After a lot of refactoring, makes the relatively simple change of endowing the compartment in which the kernel runs with a console whose methods are augmented to write slog entries. Best reviewed by commit.

### Security Considerations
Security posture should not be affected.

### Scaling Considerations
The slog will gain new entries, but kernel logging tends to be reasonably small AFAIK.

### Documentation Considerations
Anything consuming slogfiles (such as for telemetry reporting) should be prepared to encounter entries with type "console" and source "kernel".

### Testing Considerations
Manual confirmation per #10776:

<details><summary>slog excerpts</summary>

```json
{"type":"terminate","vatID":"v12","shouldReject":false,"info":{"body":"#\"payment retrieved\"","slots":[]},"time":1738358161.052329,"monotime":71.14055863702298}
{"type":"console","source":"kernel","args":["kernel terminating vat v12 (failure=false)"],"time":1738358161.052675,"monotime":71.14090518701076}
{"type":"crank-finish","crankNum":407,"crankhash":"38659f7b8b9b1628e74ca7fdd0fef9d8a4706ddf6cd78e8698aae891c558ffb2","activityhash":"b5bb680d4f6641fa9256fb68672d1fd0644462930576b0b08f4f8ba6ed80dcd9","time":1738358161.059831,"monotime":71.14806092399358}
{"type":"crank-start","crankType":"routing","crankNum":408,"message":{"type":"send","target":"ko107","msg":{"methargs":{"body":"#[\"exitAllSeats\",[\"payment retrieved\"]]","slots":[]},"result":"kp140"}},"time":1738358161.06028,"monotime":71.14851041698456}
{"type":"crank-finish","crankNum":408,"crankhash":"994c78a3c5c6cecd51f656cf7202b7ee7e1d594e0c8bf5440b0b5d3d2ddffeb3","activityhash":"12eabf17b96cd47b11554750cc910e01110fbb33e40ba7fa8d63f0d120946ecf","time":1738358161.060456,"monotime":71.1486860319972}
{"type":"crank-start","crankType":"routing","crankNum":409,"message":{"type":"notify","vatID":"v1","kpid":"kp139"},"time":1738358161.060624,"monotime":71.14885371297598}
```
```json
{"type":"crank-finish","crankNum":5051,"crankhash":"c541bb4757bf6a14f5f889d1d1d1864a4aa0c4cc69f64463c10c6827b6a1d7aa","activityhash":"dc641db0486240e2a15f86f88ee8caa9440803b4f818f9b262f4204d763f6594","time":1738358367.758784,"monotime":277.8470162190199}
{"type":"crank-start","crankType":"delivery","crankNum":5052,"message":{"type":"send","target":"ko349","msg":{"methargs":{"body":"#[\"update\",[\"osmosis-1_shido__9008-1\",{\"client_id\":\"07-tendermint-3198\",\"counterparty\":{\"client_id\":\"07-tendermint-0\",\"connection_id\":\"connection-0\"},\"id\":\"connection-2654\",\"state\":3,\"transferChannel\":{\"channelId\":\"channel-73755\",\"counterPartyChannelId\":\"channel-0\",\"counterPartyPortId\":\"transfer\",\"ordering\":0,\"portId\":\"transfer\",\"state\":3,\"version\":\"ics20-1\"}}]]","slots":[]},"result":"kp1257"}},"time":1738358367.7592,"monotime":277.8474297670126}
{"type":"clist","crankNum":5052,"mode":"import","vatID":"v6","kobj":"kp1257","vobj":"p-394","time":1738358367.759473,"monotime":277.84770355999467}
{"type":"deliver","crankNum":5052,"vatID":"v6","deliveryNum":599,"replay":false,"kd":["message","ko349",{"methargs":{"body":"#[\"update\",[\"osmosis-1_shido__9008-1\",{\"client_id\":\"07-tendermint-3198\",\"counterparty\":{\"client_id\":\"07-tendermint-0\",\"connection_id\":\"connection-0\"},\"id\":\"connection-2654\",\"state\":3,\"transferChannel\":{\"channelId\":\"channel-73755\",\"counterPartyChannelId\":\"channel-0\",\"counterPartyPortId\":\"transfer\",\"ordering\":0,\"portId\":\"transfer\",\"state\":3,\"version\":\"ics20-1\"}}]]","slots":[]},"result":"kp1257"}],"vd":["message","o+d10/10:0",{"methargs":{"body":"#[\"update\",[\"osmosis-1_shido__9008-1\",{\"client_id\":\"07-tendermint-3198\",\"counterparty\":{\"client_id\":\"07-tendermint-0\",\"connection_id\":\"connection-0\"},\"id\":\"connection-2654\",\"state\":3,\"transferChannel\":{\"channelId\":\"channel-73755\",\"counterPartyChannelId\":\"channel-0\",\"counterPartyPortId\":\"transfer\",\"ordering\":0,\"portId\":\"transfer\",\"state\":3,\"version\":\"ics20-1\"}}]]","slots":[]},"result":"p-394"}],"time":1738358367.759596,"monotime":277.8478261709809}
{"type":"console","source":"kernel","args":["error in kernel.deliver:",{"name":"ExitSignal","code":"SIGINT"}],"time":1738358367.780067,"monotime":277.86829756200314}
```

</details>

### Upgrade Considerations
This tweaks some typing in packages/swingset-liveslots/src/liveslots.js and adds some utilities to package "internal", but everything else is kernel code that is not subject to and does not affect consensus.

Release verification should look for slog entries like the above (type "console" and source "kernel").

packages/SwingSet/src/controller/controller.js

@@ -16,6 +16,7 @@ import { initSwingStore } from '@agoric/swing-store';
 import { mustMatch, M } from '@endo/patterns';
 import { checkBundle } from '@endo/check-bundle/lite.js';
 import { deepCopyJsonable } from '@agoric/internal/src/js-utils.js';
+import { makeLimitedConsole } from '@agoric/internal/src/ses-utils.js';
 import engineGC from '@agoric/internal/src/lib-nodejs/engine-gc.js';
 import { startSubprocessWorker } from '@agoric/internal/src/lib-nodejs/spawnSubprocessWorker.js';
 import { waitUntilQuiescent } from '@agoric/internal/src/lib-nodejs/waitUntilQuiescent.js';
@@ -56,34 +57,32 @@ export function computeSha512(bytes) {
   return hash.digest().toString('hex');
 }
 
-/** @param {string | ((args: unknown[]) => string)} tagOrTagCreator */
-function makeConsole(tagOrTagCreator) {
-  /** @type {(level: string) => (args: unknown[]) => void} */
-  let makeLoggerForLevel;
-  if (typeof tagOrTagCreator === 'function') {
-    const tagToLogger = new Map();
-    makeLoggerForLevel =
-      level =>
-      (...args) => {
-        // Retrieve the logger from cache.
-        const tag = tagOrTagCreator(args);
-        let logger = tagToLogger.get(tag);
-        if (!logger) {
-          logger = anylogger(tag);
-          tagToLogger.set(tag, logger);
-        }
-        // Actually log the message.
-        return logger[level](...args);
-      };
-  } else {
-    const logger = anylogger(tagOrTagCreator);
-    makeLoggerForLevel = level => logger[level];
-  }
-  const cons = {};
-  for (const level of ['debug', 'log', 'info', 'warn', 'error']) {
-    cons[level] = makeLoggerForLevel(level);
+/**
+ * Make logger functions from either a prefix string or a function that receives
+ * the first argument of a log-method invocation and returns a replacement that
+ * provides more detail for source identification.
+ *
+ * @param {string | ((originalSource: unknown) => string)} prefixer
+ */
+function makeConsole(prefixer) {
+  if (typeof prefixer !== 'function') {
+    const logger = anylogger(prefixer);
+    return makeLimitedConsole(level => logger[level]);
   }
-  return harden(cons);
+
+  const prefixToLogger = new Map();
+  return makeLimitedConsole(level => {
+    return (source, ...args) => {
+      const prefix = prefixer(source);
+      let logger = prefixToLogger.get(prefix);
+      if (!logger) {
+        logger = anylogger(prefix);
+        prefixToLogger.set(prefix, logger);
+      }
+
+      return logger[level](...args);
+    };
+  });
 }
 
 /**
@@ -213,17 +212,23 @@ export async function makeSwingsetController(
     process.on('unhandledRejection', unhandledRejectionHandler);
   }
 
-  function kernelRequire(what) {
-    Fail`kernelRequire unprepared to satisfy require(${what})`;
-  }
+  const kernelConsole = makeConsole(`${debugPrefix}SwingSet:kernel`);
+  const sloggingKernelConsole = makeLimitedConsole(level => {
+    return (...args) => {
+      kernelConsole[level](...args);
+      writeSlogObject({ type: 'console', source: 'kernel', args });
+    };
+  });
   writeSlogObject({ type: 'import-kernel-start' });
   const kernelNS = await importBundle(kernelBundle, {
     filePrefix: 'kernel/...',
     endowments: {
-      console: makeConsole(`${debugPrefix}SwingSet:kernel`),
+      console: sloggingKernelConsole,
       // See https://github.com/Agoric/agoric-sdk/issues/9515
       assert: globalThis.assert,
-      require: kernelRequire,
+      require: harden(
+        what => Fail`kernelRequire unprepared to satisfy require(${what})`,
+      ),
       URL: globalThis.Base64, // Unavailable only on XSnap
       Base64: globalThis.Base64, // Available only on XSnap
     },

packages/SwingSet/src/kernel/kernel.js

@@ -110,11 +110,10 @@ export default function buildKernel(
     warehousePolicy,
     overrideVatManagerOptions = {},
   } = kernelRuntimeOptions;
-  const logStartup = verbose ? console.debug : () => 0;
+  const logStartup = verbose ? console.debug : () => {};
 
   const vatAdminRootKref = kernelStorage.kvStore.get('vatAdminRootKref');
 
-  /** @type { KernelSlog } */
   const kernelSlog = writeSlogObject
     ? makeSlogger(slogCallbacks, writeSlogObject)
     : makeDummySlogger(slogCallbacks, makeConsole('disabled slogger'));
@@ -167,10 +166,9 @@ export default function buildKernel(
   harden(testLog);
 
   function makeSourcedConsole(vatID) {
-    const origConsole = makeConsole(args => {
-      const source = args.shift();
-      return `${debugPrefix}SwingSet:${source}:${vatID}`;
-    });
+    const origConsole = makeConsole(
+      source => `${debugPrefix}SwingSet:${source}:${vatID}`,
+    );
     return kernelSlog.vatConsole(vatID, origConsole);
   }