Honors Claude Code's CLAUDE_CONFIG_DIR config-dir override, including locations outside $HOME (containers, CI, relocated config volumes), so those users no longer get session scans / trends DB / dashboard pinned to a stale ~/.claude. Fixes the consent gate's sibling-prefix path check. Adds regression tests.
Lands #69 by @neilinger (cherry-picked) plus the two review fixes + tests.
Co-authored with @neilinger.