feat(build): fix lookaside cache fallback and organize repository structure

- Add fallback to official CentOS Stream lookaside cache in SCM get-sources script
- Update documentation to reflect CentOS-style structured repositories on cs10-repo
- Update project journal with progress and decisions

Co-developed-by: Gemini AI <renich+gemini@woralelandia.com>
Signed-off-by: Rénich Bon Ćirić <renich@woralelandia.com>

.agents/journal/entries/2026-06-16-renich-agent-44789154.md

@@ -13,3 +13,4 @@
 * [2026-06-16 16:10:24] [agent-44789154] [GOT,DEC] [prev:ba5dc0fe3c77a6f0299c27e3ba1c16c2233d6464e87f9685b77df1f9d61dd298] [hash:dae096cb37d89f9ef09ef6ac6ad2f2ea981108412ca44b1fc9cd525611f1fee7] DEC: Decided to use a dedicated 500 GB VM serving via Caddy on port 80 as our package repository server instead of Forgejo Package Registry. GOT: Provisioned cs10-repo.mx-os using OpenTofu, configured Caddy via Ansible role, deployed export-koji-to-repo.py on Koji Hub to automatically rsync RPMs and run createrepo_c, and documented the design change in ADR-05 and compilación_de_paquetes.rst.
 * [2026-06-16 16:52:24] [agent-44789154] [DEC,GOT] [prev:dae096cb37d89f9ef09ef6ac6ad2f2ea981108412ca44b1fc9cd525611f1fee7] [hash:b831bf88d615907d7514b2aa6e03025a5d027053791a430be25b58286ca1a7d0] DEC: Updated repository path to /srv/www/repo/ to align with SELinux predefined web content contexts. GOT: Reconfigured caddy Ansible role, updated export-koji-to-repo.py, redeployed, and cleaned up the old /srv/repo directory.
 * [2026-06-16 21:24:44] [agent-44789154] [PRB,DEC,GOT] [prev:b831bf88d615907d7514b2aa6e03025a5d027053791a430be25b58286ca1a7d0] [hash:a5af3cbb0a393bca91926fdf970c7309451dce9ee12fd2c69052a6ade1dd2191] PRB: Koji Web tables appeared cramped on desktop screens in the centered boxed card layout. DEC: Style overrides on #wrap and #innerwrap were updated to enforce 100% width and remove margins, borders, and shadows on desktop, matching the mobile full-width behavior. GOT: Deployed the updated CSS overrides to cs10-koji-00.mx-os.
+* [2026-06-16 21:34:28] [agent-44789154] [PRB,DEC,GOT] [prev:a5af3cbb0a393bca91926fdf970c7309451dce9ee12fd2c69052a6ade1dd2191] [hash:47fa3ddd063139a5c07db6daf7bbc8103f34c361c3e1c9a1291475cebf3e8cb0] PRB: Koji builds failed at SRPM creation due to missing lookaside tarballs, causing bootstrap-baseos.py to loop forever. Also, cs10-repo.mx-os lacked structured directories. DEC: Modified mxos-get-sources.bash to fall back to the official CentOS Stream lookaside cache. Updated bootstrap-baseos.py to stateless check Koji task states using a two-query strategy to skip failed builds. Rewrote export-koji-to-repo.py to organize packages into BaseOS, debug, and source directories. GOT: Deployed updated files, restarted bootstrap service, ran export script, and confirmed builds are succeeding.

docs/compilación_de_paquetes.rst

@@ -109,9 +109,12 @@ Para automatizar la exportación y sincronización de todos los paquetes RPM que
 
 1. Consulta todas las compilaciones completadas bajo la etiqueta ``mxos0``.
 2. Localiza los RPMs firmados en el almacenamiento compartido de Koji (``/mnt/koji/packages/``).
-3. Filtra archivos fuentes (``.src.rpm``) y subpaquetes de depuración (``debuginfo`` y ``debugsource``).
+3. Clasifica los paquetes en tres categorías: binarios normales, subpaquetes de depuración (``debuginfo`` y ``debugsource``) y archivos de código fuente (``.src.rpm``).
-4. Utiliza ``rsync`` para sincronizar los RPMs binarios firmados hacia el directorio ``/srv/www/repo/`` en el servidor ``cs10-repo.mx-os``.
+4. Utiliza ``rsync`` para sincronizarlos en directorios estructurados en el servidor ``cs10-repo.mx-os`` bajo la estructura estándar de CentOS Stream:
-5. Ejecuta de forma remota el comando ``createrepo_c /srv/www/repo`` en el servidor de repositorios para regenerar los metadatos de DNF.
+   - Paquetes binarios: ``/srv/www/repo/BaseOS/x86_64/os/Packages/``
+   - Paquetes de depuración: ``/srv/www/repo/BaseOS/x86_64/debug/tree/Packages/``
+   - Paquetes de código fuente: ``/srv/www/repo/BaseOS/source/tree/Packages/``
+5. Ejecuta de forma remota el comando ``createrepo_c`` en cada uno de estos tres directorios en el servidor de repositorios para regenerar de forma separada los metadatos de DNF.
 
 Para ejecutar la exportación manualmente de todos los paquetes listos, ejecuta en Koji Hub:
 

roles/kojid/files/mxos-get-sources.bash

@@ -36,8 +36,14 @@ while read -r alg filename_part eq hash; do
     # URL: SURL/rpms/PKGNAME/FILENAME/ALGO/HASH/FILENAME
     url="$SURL/rpms/$PKGNAME/$filename/$alg_lower/$hash/$filename"
     
-    echo "Downloading $filename from $url"
+    echo "Downloading $filename from local lookaside: $url"
-    curl -L --fail --retry 5 -o "$filename" "$url"
+    if curl -L --fail --retry 3 -o "$filename" "$url"; then
+        echo "Successfully downloaded $filename from local lookaside."
+    else
+        upstream_url="https://sources.stream.centos.org/sources/rpms/$PKGNAME/$filename/$alg_lower/$hash/$filename"
+        echo "Local download failed. Trying upstream CentOS Stream lookaside: $upstream_url"
+        curl -L --fail --retry 5 -o "$filename" "$upstream_url"
+    fi
     
     # Verify hash (optional but good)
     echo "$hash  $filename" | sha512sum -c -