Give spoken words a memory with an instant attached

An audio file used to produce no memory at all: _ingest_file returned an empty
batch for any suffix it did not know, with no log and no reason. It now raises
UnsupportedFile when you name the file and records a SkippedFile when it was a
directory walk, so a refusal is visible either way.

Speech is measured, not promised. Over 210.5 seconds of real Video-MME audio,
faster-whisper-tiny on CPU int8 transcribed at 51x realtime and reached word
error rate 0.242 against community subtitles nobody here wrote (a caption track
drops words a transcript keeps, so that is an upper bound). 66 speech atoms now
carry 550 word-level timestamps, 0 words out of order and 0 starting before
their own segment. The snapshot is 78.2 MB, under the 500 MB cap, and the report
is bench/reports/ASR.md.

Two library facts were measured rather than assumed. faster-whisper's own audio
loader is broken against PyAV 19 (av.open got an unexpected keyword
'metadata_errors') and it declares av with no version bound, so asr.decode_audio
decodes with PyAV directly and hands the model a float32 array instead of
pinning an old av with no cp314 wheel. And av.Error does not exist on PyAV 19 -
the real base is av.error.FFmpegError - so that is the only thing caught and my
own ValueErrors keep their messages.

Files over the 500-line rule were split rather than excused: ingestion.py (748)
into ingestion_common / ingestion_media / ingestion_repository / ingestion, and
cli.py (544) into cli_senses plus cli_common, following the cli_transactive
register pattern. MediaIngest declares _source_record abstract, so a half-wired
host fails at construction instead of returning None.

Verification: 207 tests pass; ruff clean on the 13 touched files; mypy clean on
them, and repo-wide mypy fell from 29 errors to 24 (5 fixed, none added);
pyright reports 0 errors on the touched files.

bench/visual_recall.py

@@ -19,15 +19,12 @@ import json
 import re
 import statistics
 import subprocess
-import sys
 import time
 from dataclasses import dataclass
 from datetime import datetime, timezone
 from pathlib import Path
 from typing import Any
 
-sys.path.insert(0, str(Path(__file__).resolve().parent))
-
 from ely_eye.config import Settings
 from ely_eye.db import Database
 from ely_eye.ocr import read_text_from_image
@@ -44,8 +41,9 @@ from ely_eye.storage import (
     visual_token_equivalent,
 )
 from ely_eye.visual_index import VisualIndex
-from metrics import aggregate, chance_recall_at_k, score_query
-from systems import machine_facts
+
+from bench.metrics import aggregate, chance_recall_at_k, score_query
+from bench.systems import machine_facts
 
 ROOT = Path(__file__).resolve().parent
 CORPUS = ROOT / "corpus" / "OS-Copilot" / "ScreenSpot-v2"