output: the abstraction artefacts live with the pod

pod/ holds all document source representations:
  pod/<doc>/                             source tree
  pod/<doc>/media/abstraction/<uid>.ssp  abstraction, as text
  pod/<doc>.zip                          tree, zipped, .ssp included
  pod/<doc>.digests.txt                  sha256s of what is in them
  pod/<uid>.ocda.db                      abstraction, as sqlite db

<lang>/abstraction/ is gone.
pod/<doc>/media/abstraction/<uid>.ssp preferred as having the
images (found within the pod tree) which .ssp needs to reproduce a
document but does not carry on its own.

The .ocda.db sits carries the images as well and (like the
pod.zip) can be used to reproduce a document directly.

digests.txt now covers the database as well as the zip, the source
and the .ssp; (as does the metadata html page).

Two ordering issues addressed:
- the pod builder clean-slates pod/<doc>/ before regenerating it,
  and the .ssp is now written before that runs. The clean slate
  now leaves media/abstraction/ alone, and the .ssp writer clears
  that directory itself on the first language of a run, so a .ssp
  for a language the document no longer is removed and cannot be
  bundled.
- for a multi-language document the .ssp files accumulate one
  language at a time and are bundled on the last, which is why the
  directory cannot simply be emptied by whichever (language) gets
  there first.

(assisted by Claude-Code)

1 files changed, 17 insertions, 0 deletions

diff --git a/org/out_metadata.org b/org/out_metadata.org
index 8606c69..71bfe9f 100644
--- a/org/out_metadata.org
+++ b/org/out_metadata.org
@@ -195,6 +195,23 @@ if (doc_matters.opt.action.html_link_markup_source) {
       writeln("WARNING, source doc_matters.src.filename_base not found: ", doc_matters.src.filename_base, ".zip\n  ", fn_pod);
     }
   }
+  if (doc_matters.opt.action.show_abstraction_db) {
+    try { // sha digest and size for the abstraction database, beside the pod
+      string _db_fn = pths_pod.pod_dir_() ~ "/"
+        ~ doc_matters.src.doc_uid_out ~ ".ocda.db";
+      if (_db_fn.exists) {
+        auto data = (cast(byte[]) (_db_fn).read);
+        metadata_ ~= "<p class=\"lev2\">";
+        metadata_ ~= "<tt>" ~ data.sha256Of.toHexString ~ "::"
+          ~ data.length.to!string ~ "</tt> - "
+          ~ doc_matters.src.doc_uid_out ~ ".ocda.db";
+        metadata_ ~= "</p>";
+      }
+    } catch (Exception ex) {
+      writeln("WARNING, abstraction db not read for metadata page: ",
+        doc_matters.src.doc_uid_out, ".ocda.db");
+    }
+  }
 }
 if (doc_matters.conf_make_meta.meta.classify_topic_register_arr.length > 0) {
   metadata_ ~= "<hr /><p class=\"lev0\">Topics:</p>";