Durable image quality: stop trusting feed thumbnails; cycle enriches Latest

Make "no blurry images" sustainable, not a one-off cleanup. RSS feed thumbnails
(~44% were ~90px) were stored at ingest and upscaled to mush, so new articles
would reintroduce them. Now image_url is filled ONLY by the quality-gated
og:image enrichment:

* insert_article no longer stores the feed image (was canonicalize_url(item...)).
* enrich_recent_images(): the cycle fetches a quality og:image for the newest
  accepted, imageless articles each run (bounded), keeping Latest photo-rich.
* Brief + on-open enrichment unchanged.

Net: every stored image is a validated, ≥450px og:image; the rest are clean
placeholders.

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

goodnews/cli.py

@@ -9,7 +9,7 @@ from .briefs import build_daily_brief, show_brief
 from .db import connect, init_db
 from .localtime import local_today
 from .dedup import DEFAULT_THRESHOLD, DEFAULT_WINDOW_DAYS, dedup as run_dedup
-from .enrich import enrich_brief_images, enrich_summarized_images
+from .enrich import enrich_brief_images, enrich_recent_images, enrich_summarized_images
 from .summarize import generate_summary, get_summary
 from .feeds import (
     fetch_feed,
@@ -461,6 +461,15 @@ def _run_cycle_locked(conn: sqlite3.Connection, args: argparse.Namespace) -> Non
         except Exception as exc:
             print(f"brief: skipped ({exc})")
 
+        # Keep the Latest feed photo-rich: fetch quality og:images for the newest
+        # accepted articles that lack one (bounded per cycle).
+        try:
+            recent = enrich_recent_images(conn)
+            if recent:
+                print(f"recent images: {recent} enriched")
+        except Exception as exc:
+            print(f"recent images: skipped ({exc})")
+
         # Pre-warm summaries for today's brief so Today reads as a calm briefing.
         # Idempotent: cached items are skipped, so this only hits the LLM for new ones.
         try: