fix(newos4): one error counter for errors/dashboard/world-model (v4.6.61)

Packet 2 (three surfaces, three answers). Measured first: `errors` scanned
/logs/current.log for [ERROR] lines, but that file only ever receives explicit
terminal.log('ERROR', ...) calls -- exactly one call site in the whole app -- so it
read 0. The dashboard added DebugSupervisor._errorDB plus failed tool calls (18),
and the world model read the debug DB alone (11).

- terminal.countErrors() / countLogErrors(): the single counter, exposed on the one
  object all three surfaces already hold
- `errors` prints the canonical total with its breakdown, the entry list (hash,
  count, severity, message), and reports the log scan separately as a mirror
- dashboard health.errors and health.errorBreakdown derive from it
- world model telemetry.recentErrors derives from it, plus errorsBySource
- terminal.log('ERROR', ...) now also records into DebugSupervisor, so the log is a
  human-readable mirror of one store instead of a second store almost nobody wrote

Verified live on v4.6.61: with a seeded debug entry + failed tool call, all three
report 2; a single log('ERROR') call moves debug 1->2 and the total by exactly 1
(the mirror line is counted once, in the log, and reported separately).

1 files changed, 6 insertions, 4 deletions

diff --git a/modules/core/module-aiassist.js b/modules/core/module-aiassist.js
index 628e68a..3326483 100644
--- a/modules/core/module-aiassist.js
+++ b/modules/core/module-aiassist.js
@@ -4641,12 +4641,13 @@ buildSystemPrompt() {
                     }
 
                     // System health
-                    var totalErrors = 0;
+                    var errCounts = { total: 0, debug: 0, latency: 0, log: 0 };
                     try {
-                        var ds = mm ? mm.modules['DebugSupervisorModule'] : null;
-                        if (ds && ds._errorDB) totalErrors += Object.keys(ds._errorDB.errors).length;
-                        if (sm && sm._latencyLog) totalErrors += sm._latencyLog.filter(function(e) { return e.error; }).length;
+                        if (this.terminal && typeof this.terminal.countErrors === 'function') {
+                            errCounts = this.terminal.countErrors();
+                        }
                     } catch (e) {}
+                    var totalErrors = errCounts.total;
                     var predictor = mm ? mm.modules['PredictorModule'] : null;
                     var predictorAcc = 'n/a (no paired runs)';
                     if (predictor && predictor._accuracy && predictor._accuracy.total > 0) {
@@ -4658,6 +4659,7 @@ buildSystemPrompt() {
                         vfsSize: data.vfs ? data.vfs.size : '?',
                         online: typeof navigator !== 'undefined' ? navigator.onLine : true,
                         errors: totalErrors,
+                        errorBreakdown: errCounts,
                         predictorAccuracy: predictorAcc
                     };