Add global music player, invoicing/payment system, account subpages, mail account admin, and the qualityiron.vegas Jet 2.0 port

Jet interpreter (Tag.cpp, __call.cpp, __imap*.cpp/h, __smtpsend.cpp/h,
__imapemptyfolder.cpp/h - new): assorted parser/tag fixes found across
this work - a stray literal-tag-in-comment and backslash-quote parser
corruption class, a dangling-pointer fix, a __call.cpp fd leak, IMAP
folder-management tags, multi-account/per-host IMAP support, and a
smtpsend Message-ID fix.

barant.com site (jetc/barant-site/):
- A site-wide persistent music player (header band, playlist/queue,
  stereo FFT EQ, session-persisted state) fed by new library/
  ianslibrary/music song-list subpages.
- /account split into info/phones/invoices subpages; a full invoicing
  and Square payment system (create/edit/copy/pay/email invoice);
  admin invoice management and mail-account management subpages.
- /services split into overview/hosting/siptrunking/documents
  subpages, retiring the old standalone pages.
- SIPPHONE.tag: a Jet 2.0 WebRTC softphone tag.
- main.css/spa.js/email.js: the SPA loading indicator, the music
  player band styling, and assorted fixes accumulated alongside this
  work.

qualityiron-site/: the qualityiron.vegas job/contractor/customer/
document management app, ported from its original Jet 1.4 codebase to
Jet 2.0 as barant.coms APIServers second multi-tenant site.

wcwc/wcwc.jet: the WCWC site Jet source (wcwc.jtc build output not
included).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

jetc/qualityiron-site/assets/images/main.css

@@ -0,0 +1,83 @@
+body { font-family: Arial, Helvetica, sans-serif; margin: 0; background: #eef2f5; color: #223; }
+.pageclass { display: flex; flex-direction: column; min-height: 100vh; }
+.heading { background-color: #9AB; padding: 4px 10px; display: flex; align-items: center; justify-content: space-between; }
+.menubar { background-color: #456; }
+table.menubar td { color: #def; font-size: 13px; padding: 6px 10px; }
+.baritem a, .baritemselected a { color: #def; text-decoration: none; font-weight: bold; }
+.baritemselected { background-color: #234; }
+.panel { background: #fff; }
+#content { padding: 10px; min-height: 60vh; transition: opacity 0.18s ease; opacity: 1; }
+#content.spa-fading { opacity: 0; }
+table { border-collapse: collapse; }
+table td, table th { padding: 4px 8px; }
+h1, h2 { color: #234; }
+.button, button, input[type=button] {
+  background: #345; color: #def; border: none; border-radius: 4px;
+  padding: 6px 14px; cursor: pointer; font-size: 14px;
+}
+.button:hover, button:hover { background: #456; }
+.footer { text-align: center; padding: 10px; color: #789; font-size: 12px; }
+a { color: #234; }
+
+.card { background: #f4f6f8; border: 1pt solid #ccc; border-radius: 6px; padding: 10px; margin-bottom: 10px; }
+.card table th { text-align: left; color: #567; width: 140px; }
+.sider { background: #fff; padding: 8px; margin-bottom: 8px; box-sizing: border-box; }
+.note_job { color: #567; padding-top: 6px !important; }
+
+#filemgr-panel { position: fixed; bottom: 20px; right: 20px; z-index: 9000; font-size: 9pt; }
+#filemgr-toggle {
+  width: 44px; height: 44px; border-radius: 50%;
+  display: flex; align-items: center; justify-content: center;
+  position: relative; cursor: pointer;
+  border: 1px solid #345; background: #234; color: #def;
+  box-shadow: 0 0 0.6em rgba(35, 52, 68, 0.35);
+  transition: box-shadow 0.2s ease, background 0.2s ease;
+  margin-left: auto;
+}
+#filemgr-toggle:hover { background: #345; }
+#filemgr-toggle svg { width: 20px; height: 20px; }
+#filemgr-badge {
+  position: absolute; top: -4px; right: -4px;
+  min-width: 16px; height: 16px; padding: 0 3px; border-radius: 8px;
+  background: #def; color: #234; font-size: 8pt; font-weight: bold;
+  display: flex; align-items: center; justify-content: center;
+}
+#filemgr-badge:empty { display: none; }
+#filemgr-body {
+  display: none; width: 320px; max-height: 400px; margin-bottom: 10px; margin-left: auto;
+  border-radius: 8px; border: 1px solid #ccc; background: #fff;
+  box-shadow: 0 10px 40px rgba(0,0,0,0.3); flex-direction: column;
+}
+#filemgr-panel.filemgr-expanded #filemgr-body { display: flex; }
+#filemgr-header {
+  display: flex; align-items: center; justify-content: space-between;
+  padding: 8px 12px; border-bottom: 1pt solid #eee; color: #234; font-weight: 600;
+}
+#filemgr-clear { font-weight: normal; font-size: 8pt; color: #789; cursor: pointer; }
+#filemgr-clear:hover { color: #234; }
+#filemgr-list { overflow-y: auto; padding: 6px; }
+#filemgr-empty { color: #789; padding: 10px; text-align: center; }
+.filemgr-item { padding: 8px; border-radius: 6px; margin-bottom: 4px; background: #f4f6f8; }
+.filemgr-item-row { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; }
+.filemgr-item-icon { flex-shrink: 0; width: 14px; height: 14px; color: #345; }
+.filemgr-item-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.filemgr-item-status { flex-shrink: 0; font-size: 8pt; color: #789; }
+.filemgr-item.filemgr-failed .filemgr-item-status { color: #c66; }
+.filemgr-item.filemgr-done .filemgr-item-status { color: #2a2; }
+.filemgr-progress-track { height: 4px; border-radius: 2px; background: #e5e5e5; overflow: hidden; }
+.filemgr-progress-fill { height: 100%; width: 0%; background: #345; transition: width 0.15s ease; }
+.filemgr-item.filemgr-done .filemgr-progress-fill { background: #2a2; }
+.filemgr-item.filemgr-failed .filemgr-progress-fill { background: #c66; }
+
+#jobdocs-dropzone {
+  border: 2px dashed #99a; border-radius: 8px; padding: 20px; text-align: center;
+  color: #789; margin-top: 10px; cursor: pointer;
+  transition: border-color 0.15s ease, background 0.15s ease;
+}
+#jobdocs-dropzone:hover, #jobdocs-dropzone.jobdocs-dropzone-active { border-color: #345; background: #eef2f5; }
+#jobdocs-list { width: 100%; border-collapse: collapse; margin-top: 10px; }
+#jobdocs-list th, #jobdocs-list td { padding: 5px 8px; border-bottom: 1pt solid #eee; text-align: left; }
+#jobdocs-list th { color: #789; font-weight: normal; font-size: 9pt; }
+#jobdocs-list td a, #jobdocs-list td .jobdocs-action { color: #345; cursor: pointer; text-decoration: none; }
+#jobdocs-list td a:hover, #jobdocs-list td .jobdocs-action:hover { text-decoration: underline; }
+#jobdocs-empty { color: #789; padding: 8px 0; }