Convert barant.com JET 1.4 marketing pages to jetc/.jtc (local, non-production)

Pulls .page files and shared template infrastructure (mainpagetemplate.temp,
menu.bar, barant.tag, opensource.menu, cart.menu, login.menu) read-only from
barant.com via SFTP into jetc/barant-site/src, then convert.py mechanically
flattens them into self-contained .jet files: linkbutton becomes a plain
anchor link (the old SESSIONCTL PAGE/PROCESS form-postback model has no
equivalent here - each page is its own real #api route now, not a shared
single-form state machine), sectionframe is expanded per its barant.tag
definition, /images/* references are fetched and inlined as data URIs
(APIServer has no static-file serving), and session-gated chrome (cart,
account/admin, login.menu) is resolved to its anonymous-visitor default
state, since no session/DB backend is wired into this conversion.

17 pages convert and serve cleanly end-to-end (verified via a local
apiserver-barant-site.json instance on :8081, kept separate from the
existing demo server on :8080 to avoid a /main route collision with the
earlier hand-cloned barant.jet). Two pages deliberately out of scope for
this pass: davidarant.page (whiledir filesystem iteration) and the
per-topic sub-pages of jet.page (dispatches on an ARGS query param this
conversion does not populate - only the default overview state converts).
vst.page/modular1.page/modular1_patches.page also deferred - they pull
live product rows via sql, a real backend dependency beyond "pages and
their template" scope.

Nothing was written back to barant.com - SFTP access was read-only
throughout, per explicit instruction to convert locally without touching
the original site.

jetc/barant-site/src/add_track.page

@@ -0,0 +1,52 @@
+<page template="mainpagetemplate">
+<heading>
+<title>The Digital Gods - The MP3 Music Store</title>
+</heading>
+<contents>
+
+<retain name="collection_id">
+
+<h1>Add A Track To A Collection</h1>
+<sql>select * from collections where id="$[collection_id]"</sql>
+<p>The track added on this form will be added to collection <b>$[.name]</b>.</p>
+<p>Enter the information for the track file in the form and click the <b>Add
+Track</b> button.</p>
+
+<p>
+<table class="entryform">
+ <tr>
+  <td>Name:</td><td><input type="text" name="name" size="50" maxlength="50" value="$[name:0]"></td>
+ </tr>
+ <tr>
+  <td>Artist:</td><td><input type="text" name="artist" size="50" maxlength="50" value="$[artist:0]"></td>
+ </tr>
+ <tr>
+  <td>Description:</td><td><textarea name="description" rows="10" cols="50">$[description:0]</textarea></td>
+ </tr>
+ <tr>
+  <td>Price:</td><td><input type="text" name="price" size="10" maxlength="10" value="$[price:0]"></td>
+ </tr>
+ <tr>
+  <td>File to upload:</td><td><input type="file" name="filedata" size="64" maxlength="128" value="$[filedata]"></td>
+ </tr>
+</table>
+</p>
+
+<if value1="$[message]" value2="" type="ne">
+<p class="message">$[message]</p> 
+</if>
+
+<table cellpadding="5" cellborder="0" border="0"></tr><td class="warning">
+<p><b>WARNING:</b></p>
+<p>Large files will take a while to upload. Please do not interrupt the process
+as your transaction will not complete the the track will not be added to the
+collection. Many internet connections have very slow uplink speeds. Please
+go get a cup of coffee and do something else for a while if you are
+uploading a large file to the collection.<p>
+</td></tr></table>
+
+<abutton process="add_track" multipart="yes">Add Track</abutton>
+<abutton page="musicianhome">Cancel</abutton>
+
+</contents>
+</page>