Declarative extractors in separate .toml files under .aphoria/extractors/ were
silently ignored because config loading only parsed the main config.toml. Now
from_file() scans the extractors directory after loading the main config and
merges any [[extractors.declarative]] definitions found in .toml files. Invalid
files produce warnings but don't fail the load. Also includes show_observations
field additions to scan args and removes unused import.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
089992993f