watcher.py: exclude 3 image-only pptx files from ingestion

Three files in the original ingest_failures cohort have been
characterized via direct OCR and confirmed to lack ingestible text:

- Presentations/Renders.pptx — 35 PICTURE-shape renders, 33/35 zero-char
  on OCR, 2 with noise (20 and 29 chars).
- Presentations/Ribbon Cutting Slideshow.pptx — 10-slide event photo
  deck, 9/10 zero-char, 1 with 17 chars of noise.
- Academic/DDF555 3D Computational/GH Slicer Notes [Autosaved].pptx —
  Office autosave duplicate of GH Slicer Notes.pptx; first 9 images
  byte-identical (sha256) to the canonical file. 2 net-new images
  contribute 36 noisy chars. Excluding to prevent double-embedding the
  same content under two source filenames.

Pattern matches f18fb64 (path.parts membership). Folder-level globs
were considered and rejected: /Presentations/ contains successfully
embedded text-bearing decks (aaronnelson_3D 4D.pptx,
aaronnelson_slideslam.pptx). Exact-name + parent-folder membership
applied in both watcher filter sites (get_changed_files and
IngestHandler._should_ignore).

The fourth file in the cohort, GH Slicer Notes.pptx (the canonical
non-autosave version), was confirmed to carry 379 chars of real text
(Grasshopper UI / code samples) across 6/9 images. It remains in
ingest_failures unresolved, awaiting the eventual ocrmypdf backlog
pass.

Cleanup: 3 ingest_failures rows resolved (the excluded files).
Unresolved count: 94 → 91.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/watcher.py

@@ -207,6 +207,12 @@ def get_changed_files(state: dict) -> list:
             continue
         if "Computational Design 2017" in path.parts and "Student Work" in path.parts:
             continue
+        if path.name in ("Renders.pptx", "Ribbon Cutting Slideshow.pptx") \
+                and "Presentations" in path.parts:
+            continue
+        if path.name == "GH Slicer Notes [Autosaved].pptx" \
+                and "DDF555 3D Computational" in path.parts:
+            continue
         if path.stat().st_size == 0:
             continue
         if state.get(str(path)) != str(path.stat().st_mtime):
@@ -297,6 +303,12 @@ class IngestHandler(FileSystemEventHandler):
             return True
         if "Computational Design 2017" in path.parts and "Student Work" in path.parts:
             return True
+        if path.name in ("Renders.pptx", "Ribbon Cutting Slideshow.pptx") \
+                and "Presentations" in path.parts:
+            return True
+        if path.name == "GH Slicer Notes [Autosaved].pptx" \
+                and "DDF555 3D Computational" in path.parts:
+            return True
         return False
 
     def on_created(self, event):