feat(cms): U1 content model + migration scaffold for blog/news/events

Establish content/ as the source of truth for editable content and
back-fill it from the existing detail pages, per U1 of the no-code CMS
plan.

- docs/content-model.md: front-matter schema (EN/MK/SI), body_format
  html-vs-markdown, content/events -> projects/ output mapping.
- tools/migrate_pages_to_content.py: bs4/yaml extractor; pulls title,
  subtitle, category, ISO date (from ARTICLE_DATES), hero image+caption;
  preserves the article body PLUS trailing sibling sections (event
  galleries) verbatim as body_format: html. Reports unparseable pages
  instead of emitting half-formed files.
- content/**: 51 files (17 entries x EN/MK/SI), 0 skips.
- tools/tests/test_migrate_roundtrip.py: 12 characterization tests
  (structured fields, news-has-no-subtitle, event gallery/lightbox
  preserved, Cyrillic UTF-8 round-trip, every page parses).
- .gitignore: ignore __pycache__/ and *.pyc.

U1 is unblocked and standalone. U2 (render content -> pages) is next;
U5/U6 remain blocked on Open Question Q1 (Gitea<->GitHub topology).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

content/news/proof-of-means-updated-2026/si.md

@@ -0,0 +1,26 @@
+---
+type: news
+slug: proof-of-means-updated-2026
+lang: si
+source_folder: news
+title: Znesek dokazila o sredstvih posodobljen na 507,43 € na mesec
+date: '2026-08-01'
+date_line: Objavljeno 1 avgust 2026
+hero:
+  src: /images/news-proof-of-means.webp
+  alt: Blagajna, polna evrskih kovancev in bankovcev
+  width: '1600'
+  height: '1067'
+  caption_html: <span class="fig-illustrative"><i aria-hidden="true" class="fas fa-circle-info"></i> Ilustrativna slika</span> · Image by <a href="https://pixabay.com/users/alexas_fotos-686414/?utm_source=link-attribution&amp;utm_medium=referral&amp;utm_campaign=image&amp;utm_content=1642989" rel="noopener" target="_blank">Alexa</a> from <a href="https://pixabay.com/?utm_source=link-attribution&amp;utm_medium=referral&amp;utm_campaign=image&amp;utm_content=1642989" rel="noopener" target="_blank">Pixabay</a>
+body_format: html
+---
+<div class="news-article-body">
+<p>Če zaprošate za študentsko dovoljenje za prebivanje v Sloveniji ali ga podaljšujete, morate dokazati, da imate dovolj sredstev za preživljanje. Ta pogoj je vezan na slovenski osnovni znesek minimalnega dohodka.</p>
+<p>Od 1. aprila 2026 ta osnovni znesek minimalnega dohodka znaša 507,43 € na mesec. To je znesek, ki ga morate biti pripravljeni izkazati za celotno študijsko leto, najpogosteje s pisno izjavo staršev o podpori ali z drugimi sprejetimi dokazili, kot so štipendija, bančna sredstva ali zaslužek od študentskega dela.</p>
+<p>Ker znesek sledi minimalnemu dohodku, se lahko znova spremeni. Aktualni uradni znesek pred oddajo vedno preverite pri svoji upravni enoti in vprašajte, kako izračunajo obdobje in katera dokazila sprejmejo.</p>
+</div>
+<div class="news-source">
+<span class="news-source-label"><i aria-hidden="true" class="fas fa-up-right-from-square"></i> Uradni vir</span>
+<a href="https://www.gov.si/teme/denarna-socialna-pomoc/" rel="noopener" target="_blank">gov.si, Denarna socialna pomoč</a>
+</div>
+<a class="btn btn-secondary news-article-cta" href="../../student-welcome-guide/student-residence-permit/">Preberi vodnik o dovoljenju za prebivanje</a>