- Adjusted yelling, profanity, and anguish criteria to reduce false-positive metrics.
- Implemented refined regex patterns for negation, blame, and noise reduction.
- Incremented the backfill key to v8 to accommodate updated signal definitions.
- Expanded test suite to validate new constraints for yelling, exclusion words, and sentiment triggers.
Stats tests set PI_CONFIG_DIR + setAgentDir(home/<config>/agent), which resolves equal to the default agent dir and routes stats.db through $XDG_DATA_HOME/omp/stats.db whenever an XDG var is set, leaking rows across tests. The shared installStatsTestIsolation helper now snapshots and clears XDG_*_HOME with PI_CONFIG_DIR on each test, points the agent dir at a fresh TempDir, closes the DB handle, and restores the prior env after the test.
The PR bumped USER_MESSAGES_BACKFILL_KEY to user_messages_v6, but the
behavior-backfill regression still seeded the dead user_messages_v5
sentinel, so it no longer exercised the user-messages backfill reset
path. Point both fixtures at v6.
Addresses review feedback on #2457.
can1357