fix(newos4): predictor arithmetic, deployed-source viewer, ls text output (v4.6.57)

Acting on the "Request to the newOS4 team" packet (spaces/agando/guides/,
re-verified by its author on 4.6.56). Three verified defects fixed:

Packet 5 (predictor arithmetic) - module-predictor.js
- the persisted field named mape held a SUM while predictor-status divided by the
  paired count: renamed to errorSum, older payloads read through
- errorPct is stored raw; the 500% clamp is now render-only, so a 475x miss stays
  visible instead of being flattened to the ceiling
- predictions are floored at 1 s and marked floored; a floored prediction is
  consumed but never scored as 100% error (a 0 s prediction is not a prediction)
- observations shorter than 1.5 s (aborted/instant runs) are marked unusable and
  no longer train _findSimilar - one 0.079 s run was rounding the next prediction
  to 0 s
- status prints an unpaired and an unscored count alongside the mean

Packet 10 (verification cannot see its own fixes) - module-aiassist.js
- view_module now returns the DEPLOYED source, prefixed with file and version,
  and only falls back to the _mods copy with a "may be stale" banner. The
  unversioned _mods/<Class>.js edit cache used to shadow the deployed file
  forever, so the viewer showed pre-fix code while the bundle was new.
  Proven by seeding a stale _mods/PredictorModule.js and calling the tool.

Packet 1b (ls exits clean with no output) - module-fs.js
- ls rendered only via printClickable(), which writes straight to the DOM, so any
  capture (AI run_command, diagnostics) saw an empty result and reported "empty
  directory". It now always prints a text line and keeps the clickable chips when
  nothing is capturing.

Test: modules/test/test-predictor-accuracy.js 34/34 (new cases Q, R, S).

1 files changed, 7 insertions, 1 deletions

diff --git a/modules/core/module-fs.js b/modules/core/module-fs.js
index 686a1a6..03c3733 100644
--- a/modules/core/module-fs.js
+++ b/modules/core/module-fs.js
@@ -63,7 +63,13 @@ class FileSystemModule {
                 const total = filtered.reduce((s, f) => s + (f.size || 0), 0);
                 this.terminal.print('total ' + filtered.length + ' (' + total + ' bytes)', 'text-muted');
             } else {
-                this.terminal.printClickable(filtered);
+                // v4.6.57: printClickable() writes straight to the DOM, so anything that
+                // captures output (the AI run_command tool, the diagnostics sweep) saw nothing
+                // and reported "directory empty" (packet §1b). Always emit a text line.
+                const names = filtered.map(f => f.name + (f.type === 'dir' ? '/' : '')).join('  ');
+                this.terminal.print(names);
+                const capturing = !!(this.terminal._printCaptureStack && this.terminal._printCaptureStack.length);
+                if (!capturing && typeof this.terminal.printClickable === 'function') this.terminal.printClickable(filtered);
             }
         };
         this.commands['cat'] = (args) => {