feat: flyt sitet fra Astro til Zola

Samme indhold, URL'er og udseende, bygget af en enkelt zola-binær og Tailwind
standalone-CLI uden Node. Kanonisk domæne er asger.weirsoe.dk.

Blogindlæg ligger som page bundles med frontmatter Zola forstår, så de gamle
stempler er ugyldige, indtil scripts/omstempl.py er kørt med PUBLISH_KEY.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/postbuild.py

@@ -0,0 +1,157 @@
+#!/usr/bin/env python3
+"""Efterbehandling af Zolas output i public/:
+
+- overskrift-id'er som på den gamle side (bevarer æøå, så gamle #ankre stadig virker)
+- sitemap-index.xml + sitemap-0.xml med lastmod fra git og frontmatter
+- sw.js med precache-liste
+- PW_PREVIEW=1: hele sitet flyttes ind under /udkast, uden sitemap og service worker
+"""
+import hashlib
+import html
+import json
+import os
+import pathlib
+import re
+import subprocess
+
+OUT = pathlib.Path("public")
+SITE = "https://asger.weirsoe.dk"
+PREVIEW = os.environ.get("PW_PREVIEW") == "1"
+BASE = "/udkast"
+
+
+def pages():
+    return sorted(OUT.rglob("*.html"))
+
+
+def slug(text):
+    """Samme regler som github-slugger, som den gamle build brugte."""
+    s = html.unescape(re.sub(r"<[^>]+>", "", text)).strip().lower()
+    s = re.sub(r"[^\w\- ]", "", s)
+    return s.replace(" ", "-")
+
+
+def heading_ids():
+    for f in pages():
+        src = f.read_text()
+        if 'class="prose' not in src:
+            continue
+        seen = {}
+
+        def fix(m):
+            s = slug(m[3])
+            n = seen.get(s, 0)
+            seen[s] = n + 1
+            return f'<h{m[1]} id="{s}-{n}"{m[2]}>' if n else f'<h{m[1]} id="{s}"{m[2]}>'
+
+        f.write_text(re.sub(r'<h([1-6]) id="[^"]*"([^>]*)>(.*?)(?=</h\1>)',
+                            lambda m: fix(m) + m[3], src, flags=re.S))
+
+
+def git_date(*files):
+    if int(subprocess.run(["git", "rev-list", "--count", "HEAD"], capture_output=True, text=True).stdout or 0) < 2:
+        return None
+    out = subprocess.run(["git", "log", "-1", "--format=%cI", "--", *files], capture_output=True, text=True).stdout
+    return out.strip() or None
+
+
+def frontmatter(path):
+    text = path.read_text()
+    head = text.split("---\n", 2)[1]
+    return {k: v.strip().strip("'\"") for k, v in re.findall(r"^\s*(\w+):(.*)$", head, re.M)}
+
+
+def iso(date):
+    return f"{date}T00:00:00.000Z"
+
+
+def lastmods():
+    """Rute -> lastmod: sidste commit for statiske sider, frontmatter for blogindlæg."""
+    routes = {}
+    for md in pathlib.Path("content").rglob("*.md"):
+        fm = frontmatter(md)
+        if "blog" in md.parts or md.parts[1] == "projekter" or "projects" in md.parts:
+            continue
+        route = "/" + str(md.relative_to("content").with_suffix("")).removesuffix("_index")
+        route = route.rstrip("/") or "/"
+        tpl = fm.get("template")
+        d = git_date(str(md), f"templates/{tpl}") if tpl else git_date(str(md))
+        if d:
+            routes[route] = d
+    posts = []
+    for md in pathlib.Path("content/blog").glob("*/index.md"):
+        fm = frontmatter(md)
+        d = iso(fm.get("updated") or fm["date"])
+        routes[f"/blog/{md.parent.name}"] = d
+        posts.append(d)
+    if posts:
+        routes["/blog"] = max(posts)
+    return routes
+
+
+def sitemap():
+    skip = ("/tags", "/peppol")
+    skip_exact = ("/cookies", "/status", "/chat")
+    routes = []
+    for f in pages():
+        rel = f.relative_to(OUT)
+        if rel.name != "index.html":
+            continue
+        r = "/" + str(rel.parent).replace(".", "", 1) if str(rel.parent) == "." else f"/{rel.parent}"
+        if r.startswith(skip) or r in skip_exact:
+            continue
+        routes.append(r)
+    routes.append("/tarballz/")
+    mods = lastmods()
+    urls = []
+    for r in sorted(routes):
+        mod = mods.get(r)
+        urls.append(f"<url><loc>{SITE}{r}</loc>" + (f"<lastmod>{mod}</lastmod>" if mod else "")
+                    + f"<changefreq>weekly</changefreq><priority>{'1.0' if r == '/' else '0.7'}</priority></url>")
+    ns = 'xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"'
+    (OUT / "sitemap-0.xml").write_text(f'<?xml version="1.0" encoding="UTF-8"?><urlset {ns}>{"".join(urls)}</urlset>')
+    newest = max(mods.values(), default=None)
+    (OUT / "sitemap-index.xml").write_text(
+        f'<?xml version="1.0" encoding="UTF-8"?><sitemapindex {ns}><sitemap><loc>{SITE}/sitemap-0.xml</loc>'
+        + (f"<lastmod>{newest}</lastmod>" if newest else "") + "</sitemap></sitemapindex>")
+
+
+def service_worker():
+    """Precache-listen afhænger af buildet, resten af sw.js ligger i scripts/sw.js."""
+    exts = {".html", ".css", ".js", ".svg", ".png", ".woff2", ".xml", ".txt", ".webmanifest"}
+    files = sorted(p for p in OUT.rglob("*") if p.is_file() and p.suffix in exts
+                   and p.name not in ("sw.js", "mermaid.min.js"))
+    h = hashlib.sha256()
+    for p in files:
+        h.update(p.read_bytes())
+    urls = ["/" + str(p.relative_to(OUT)) for p in files]
+    src = pathlib.Path("scripts/sw.js").read_text()
+    src = src.replace("__VERSION__", h.hexdigest()[:12]).replace("__URLS__", json.dumps(urls, ensure_ascii=False))
+    (OUT / "sw.js").write_text(src)
+
+
+def rebase():
+    """Rod-relative links og billeder i HTML peger ind under /udkast."""
+    attr = re.compile(r'\b(href|src|action)="/(?!/|udkast)')
+    srcset = re.compile(r'\bsrcset="([^"]*)"')
+
+    def fix_set(m):
+        return 'srcset="' + re.sub(r"(^|, )/(?!/)", rf"\1{BASE}/", m[1]) + '"'
+
+    for f in pages():
+        src = f.read_text()
+        f.write_text(srcset.sub(fix_set, attr.sub(rf'\1="{BASE}/', src)))
+
+
+def main():
+    (OUT / "sitemap.xml").unlink(missing_ok=True)
+    heading_ids()
+    if PREVIEW:
+        rebase()
+    else:
+        sitemap()
+        service_worker()
+
+
+if __name__ == "__main__":
+    main()