Collect Jimmy Kimmel Live and Hollywood block references; skip AVIF frames in the contact sheet

MEMORY.md

@@ -18,6 +18,14 @@ Session memory for durable decisions, state, and gotchas. Keep concise, remove o
   was titled "Ramada hotel" but is actually an interior stage shot — Gemini refused it with a
   text-only message; the hotel/parking ramp reference is still missing from the local set. The
   map-recreation plan is tracked in `TODO.md` §Local map development → Comedy Store map recreation.
+- **Jimmy Kimmel Live research (2026-11-03):** three new local-only DDG sets —
+  `tmp/research/jimmy-kimmel-stage/` (15 frames, stage/audience), `tmp/research/jimmy-kimmel-entrance/`
+  (12 frames, the El Capitan entrance with the Kimmel marquee/signs) and
+  `tmp/research/hollywood-block/` (11 frames, the Masonic Temple/El Capitan block). The Kimmel
+  entrance frames confirm the starting-point building is the El Capitan Entertainment Centre with
+  "Jimmy Kimmel Live!" signage over the same six-column facade. Some DDG frames arrive as AVIF
+  mislabeled `.png`/`.jpg`; `refcollect.py sheet` now skips unreadable files and the AVIF frames
+  were converted with `ffmpeg` for the contact sheets.
 - **Local-only reference override (2026-11-03, owner decision):** for development-only photo
   research the licence gate does **not** apply. Downloads for this track live in `tmp/research/`
   (gitignored) and may come from DuckDuckGo image search, street-view frames, neighbouring

tools/refcollect.py

@@ -339,12 +339,18 @@ def cmd_sheet(args) -> int:
     images = []
     for row in rows:
         path = out_dir / row["file"]
-        if path.is_file():
+        if not path.is_file():
+            continue
+        try:
             with Image.open(path) as img:
                 img.load()
             images.append(img.convert("RGB"))
+        except Exception as exc:  # noqa: BLE001 - AVIF/misnamed or corrupt frames
+            print(f"  skip unreadable {path.name}: {exc.__class__.__name__}",
+                  file=sys.stderr)
     if not images:
-        sys.exit("error: no downloaded frames in this folder")
+        sys.exit("error: no readable frames in this folder (convert AVIF/webp "
+                 "files with ffmpeg first)")
     cell = 320
     cols = 4
     rows_count = (len(images) + cols - 1) // cols