docs(newos4): clear the help.html command backlog, and make it detectable

help.html had not been touched since 2026-08-02. Auditing the page against the
code found 74 commands the runtime registers but the docs never mentioned, and
4 rows documenting commands that no longer exist.

Documented (by section): terminal 11 (dashboard --watch/--stop, usage, ps, top,
df, free, history, run, sysmsg, view_module), a2a 6, AI 14 (webxai/webx/wx,
context*/smart-ask, commit-*, ai-model/ai-ignore), vaultmind 4, debug 2, filesystem 2,
sessions 1, memory-graph 3, modules 4, neural-vfs 1, agents 3, web 1, voice 3,
config 3, extras 8 (kanban, three, course, gzip, wget, gui-*), vault 2 (encrypt/decrypt),
skills 5, webdav 1, plus an alias row for h/s/ll.

Removed ghost rows: commands, check, sandbox-kill, webdav-explorer -- none are
registered anywhere in modules/; the sandbox prose no longer promises sandbox-kill.

New check: scripts/newos4-maintain.py check_help_coverage() derives the command
list from terminal.js (_baseWhitelist, internals, cmd === dispatch) plus every
commands['...'] registration in modules/ and compares it with help.html, so the
next gap shows up in the daily maintenance run instead of rotting for 11 weeks.

Verified: html.parser 0 errors (before the fix my own insertion broke the page --
a signature containing <script> opened a script element), 355/355 commands
documented, maintenance OK, 449 command rows in the DOM, 360/390 px 4/4 OK,
perms fixed (atlas.json, course.js were 664).

1 files changed, 11 insertions, 11 deletions

diff --git a/course/atlas.json b/course/atlas.json
index af43b8a..4eeeff4 100644
--- a/course/atlas.json
+++ b/course/atlas.json
@@ -1,5 +1,5 @@
 {
- "version": "2026-10-18T15:01:55Z",
+ "version": "2026-10-21T23:46:07Z",
  "source_hash": "fdf2b4d2aaf3dbc0",
  "commands": {
   "a2a-ack": {
@@ -3058,7 +3058,7 @@
    "file": "modules/core/module-world-model.js",
    "tier": "core-bundle",
    "category": "ai",
-   "desc": "world-model-ask <question> — Query the model (e.g. \"what changed since yesterday\")",
+   "desc": "world-model-ask <question> — Ask the LLM about this system (grounded in the world model; --facts for the instant keyword lookup)",
    "builtin": false,
    "example": "world-model-ask"
   },
@@ -3174,7 +3174,7 @@
    "commands": [
     "course"
    ],
-   "lines": 339
+   "lines": 342
   },
   "cron": {
    "file": "modules/ext/cron.js",
@@ -3232,7 +3232,7 @@
     "files",
     "preview"
    ],
-   "lines": 1066
+   "lines": 1151
   },
   "finder": {
    "file": "modules/ext/finder.js",
@@ -3350,7 +3350,7 @@
     "vaultmind-status",
     "wallet-lookup"
    ],
-   "lines": 4528
+   "lines": 4678
   },
   "module-chatstudio": {
    "file": "modules/core/module-chatstudio.js",
@@ -3386,7 +3386,7 @@
     "debug-sync-url",
     "debug-trends"
    ],
-   "lines": 838
+   "lines": 890
   },
   "module-fetcher": {
    "file": "modules/core/module-fetcher.js",
@@ -3439,7 +3439,7 @@
     "vfs-size",
     "wc"
    ],
-   "lines": 750
+   "lines": 823
   },
   "module-leases": {
    "file": "modules/core/module-leases.js",
@@ -3553,7 +3553,7 @@
     "orchestrator-wake",
     "pipeline"
    ],
-   "lines": 1382
+   "lines": 1442
   },
   "module-predictor": {
    "file": "modules/core/module-predictor.js",
@@ -3656,7 +3656,7 @@
     "uptime",
     "version"
    ],
-   "lines": 805
+   "lines": 815
   },
   "module-world-model": {
    "file": "modules/core/module-world-model.js",
@@ -3668,7 +3668,7 @@
     "world-model-refresh",
     "world-model-summary"
    ],
-   "lines": 502
+   "lines": 600
   },
   "secret-vault": {
    "file": "modules/core/secret-vault.js",
@@ -3770,7 +3770,7 @@
     "webdav-rm",
     "webdav-status"
    ],
-   "lines": 2346
+   "lines": 2368
   },
   "wpm": {
    "file": "modules/ext/wpm.js",