fix: remove 'bridge' false-positive from MODERATE_KEYWORDS

'bridge' is a common English word that triggers MODERATE crisis alerts
for any message mentioning it. The newer crisis/detect.py does not
include this keyword.

Fixes #28

crisis_detector.py

@@ -87,7 +87,6 @@ MODERATE_KEYWORDS = {
     "afraid": r"\bafraid\b",
     "pain": r"\b(?:in\s*)?pain\b",
     "dying": r"\bdying\b",
-    "bridge": r"\bbridge\b",  # context-dependent, flagged for review
     "help me": r"\bhelp\s*me\b",
     "crisis": r"\bcrisis\b",
     "overwhelmed": r"\boverwhelm(?:ed|ing)\b",