v4 Schritt 4: News-Board

- routers/news.py: aggregiert kuratierte RSS/Atom-Feeds (HuggingFace, llama.cpp, Ollama,
  r/LocalLLaMA, Simon Willison) via httpx + stdlib xml.etree, In-memory-Cache 30 min,
  Hardware-relevante Beitraege (rocm/gfx1151/...) markiert. Degradiert pro Feed sauber.
- news.js: Beitragsliste (Quelle, Titel-Link, relatives Datum) + Aktualisieren.
- Nav 'News' + View + main.js.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

routers/news.py

@@ -0,0 +1,98 @@
+"""
+News-Router: aggregiert kuratierte RSS/Atom-Feeds rund um lokale LLMs.
+Serverseitig geholt (httpx) + mit stdlib geparst (kein neuer Dep), In-memory-Cache (30 min).
+Degradiert sauber: einzelne Feeds dürfen fehlschlagen, der Rest kommt trotzdem.
+"""
+
+import time
+import xml.etree.ElementTree as ET
+from datetime import datetime
+from email.utils import parsedate_to_datetime
+
+import httpx
+from fastapi import APIRouter, Depends
+
+from auth import auth
+
+router = APIRouter(prefix="/api", dependencies=[Depends(auth)])
+
+FEEDS = [
+    ("HuggingFace", "https://huggingface.co/blog/feed.xml"),
+    ("llama.cpp", "https://github.com/ggml-org/llama.cpp/releases.atom"),
+    ("Ollama", "https://github.com/ollama/ollama/releases.atom"),
+    ("r/LocalLLaMA", "https://www.reddit.com/r/LocalLLaMA/.rss"),
+    ("Simon Willison", "https://simonwillison.net/atom/everything/"),
+]
+_UA = {"User-Agent": "Mozilla/5.0 (MissionControl NewsBot)"}
+_TTL = 1800  # 30 min
+_CACHE = {"ts": 0.0, "items": []}
+_RELEVANT = ("rocm", "gfx1151", "strix", "amd", "vulkan", "llama.cpp", "gguf", "quant")
+
+
+def _tag(t):
+    return t.split("}")[-1]
+
+
+def _epoch(s):
+    if not s:
+        return 0.0
+    try:
+        return parsedate_to_datetime(s).timestamp()
+    except Exception:  # noqa: BLE001
+        pass
+    try:
+        return datetime.fromisoformat(s.replace("Z", "+00:00")).timestamp()
+    except Exception:  # noqa: BLE001
+        return 0.0
+
+
+def _parse(source, xml_text):
+    out = []
+    try:
+        root = ET.fromstring(xml_text)
+    except Exception:  # noqa: BLE001
+        return out
+    for el in root.iter():
+        if _tag(el.tag) not in ("item", "entry"):
+            continue
+        title = link = date = ""
+        for ch in el:
+            t = _tag(ch.tag)
+            if t == "title":
+                title = (ch.text or "").strip()
+            elif t == "link":
+                link = ch.get("href") or (ch.text or "").strip() or link
+            elif t in ("pubDate", "published", "updated") and not date:
+                date = (ch.text or "").strip()
+        if title:
+            low = title.lower()
+            out.append({
+                "source": source, "title": title, "link": link,
+                "ts": _epoch(date),
+                "relevant": any(k in low for k in _RELEVANT),
+            })
+    return out[:8]
+
+
+def get_news():
+    now = time.time()
+    if now - _CACHE["ts"] < _TTL and _CACHE["items"]:
+        return _CACHE["items"]
+    items = []
+    with httpx.Client(timeout=8.0, headers=_UA, follow_redirects=True) as c:
+        for source, url in FEEDS:
+            try:
+                r = c.get(url)
+                r.raise_for_status()
+                items += _parse(source, r.text)
+            except Exception:  # noqa: BLE001
+                continue
+    items.sort(key=lambda x: x["ts"], reverse=True)
+    items = items[:24]
+    _CACHE.update(ts=now, items=items)
+    return items
+
+
+@router.get("/news")
+def news():
+    return {"items": get_news()}