feat(#101 ): crisis detection A/B test framework

- ABTestConfig: feature flag (env vars or constructor), deterministic text-hash assignment for consistent conversation-level routing - CrisisABDetector: routes to variant A (canonical) or B (lower MEDIUM threshold: 1 vs 2 indicators, multi-tier score boost) - ABDetectionResult: enriched with variant, hash, timestamp - ABMetrics: per-variant false positive rate, detection latency, detection rate, level distribution, comparison deltas - JSONL event logging for offline analysis - 40+ tests covering config, detection, routing, metrics, logging Closes #101
feat: cache offline crisis resources (refs #41 ) (#74 )
2026-04-15 11:01:24 -04:00 · 2026-04-14 22:09:59 +00:00 · 2026-04-14 22:08:29 +00:00 · 2026-04-14 22:08:28 +00:00 · 2026-04-14 22:08:24 +00:00
13 changed files with 1591 additions and 371 deletions
--- a/2
+++ b/2
@@ -34,7 +34,7 @@ deploy-bash:

 push:
 	rsync -avz --exclude='.git' --exclude='deploy' \
-		index.html manifest.json sw.js about.html testimony.html system-prompt.txt \
+		index.html manifest.json sw.js about.html crisis-offline.html testimony.html system-prompt.txt \
 		root@$(VPS):/var/www/the-door/
 	ssh root@$(VPS) "chown -R www-data:www-data /var/www/the-door"

--- a/crisis-offline.html
+++ b/crisis-offline.html
@@ -0,0 +1,241 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="theme-color" content="#0d1117">
+<meta name="description" content="Offline crisis resources from The Door. Call or text 988 for immediate help.">
+<title>Offline Crisis Resources | The Door</title>
+<style>
+  :root {
+    color-scheme: dark;
+    --bg: #0d1117;
+    --panel: #161b22;
+    --panel-urgent: #1c1210;
+    --border: #30363d;
+    --accent: #c9362c;
+    --accent-soft: #ff6b6b;
+    --text: #e6edf3;
+    --muted: #8b949e;
+    --safe: #2ea043;
+  }
+
+  * { box-sizing: border-box; }
+
+  body {
+    margin: 0;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+    background: var(--bg);
+    color: var(--text);
+    line-height: 1.6;
+  }
+
+  main {
+    max-width: 760px;
+    margin: 0 auto;
+    padding: 24px 16px 48px;
+  }
+
+  .status {
+    display: inline-flex;
+    align-items: center;
+    gap: 10px;
+    padding: 8px 12px;
+    border-radius: 999px;
+    background: rgba(201, 54, 44, 0.15);
+    border: 1px solid rgba(255, 107, 107, 0.35);
+    color: var(--accent-soft);
+    font-size: 0.9rem;
+    margin-bottom: 20px;
+  }
+
+  .status-dot {
+    width: 10px;
+    height: 10px;
+    border-radius: 50%;
+    background: var(--accent-soft);
+  }
+
+  h1 {
+    font-size: clamp(2rem, 6vw, 2.75rem);
+    line-height: 1.15;
+    margin: 0 0 12px;
+  }
+
+  .lede {
+    color: var(--muted);
+    font-size: 1.05rem;
+    margin: 0 0 28px;
+  }
+
+  .urgent-box,
+  .panel {
+    border-radius: 18px;
+    padding: 20px;
+    margin-bottom: 18px;
+    border: 1px solid var(--border);
+    background: var(--panel);
+  }
+
+  .urgent-box {
+    background: linear-gradient(180deg, rgba(201, 54, 44, 0.18), rgba(28, 18, 16, 0.95));
+    border-color: rgba(255, 107, 107, 0.35);
+  }
+
+  .section-title {
+    font-size: 1.2rem;
+    margin: 0 0 12px;
+  }
+
+  .actions {
+    display: grid;
+    gap: 12px;
+    margin-top: 16px;
+  }
+
+  .action-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    text-align: center;
+    gap: 8px;
+    min-height: 52px;
+    padding: 14px 18px;
+    border-radius: 12px;
+    text-decoration: none;
+    font-weight: 700;
+    color: #fff;
+    background: var(--accent);
+    border: 1px solid transparent;
+  }
+
+  .action-btn.secondary {
+    background: #1f6feb;
+  }
+
+  .action-btn.retry {
+    background: transparent;
+    color: var(--text);
+    border-color: var(--border);
+  }
+
+  .action-btn:focus,
+  .action-btn:hover,
+  button.action-btn:hover,
+  button.action-btn:focus {
+    outline: 3px solid rgba(255, 107, 107, 0.4);
+    outline-offset: 2px;
+  }
+
+  ul, ol {
+    margin: 0;
+    padding-left: 20px;
+  }
+
+  li + li {
+    margin-top: 8px;
+  }
+
+  .grounding-steps li::marker {
+    color: var(--accent-soft);
+    font-weight: 700;
+  }
+
+  .small {
+    color: var(--muted);
+    font-size: 0.92rem;
+  }
+
+  .grid {
+    display: grid;
+    gap: 18px;
+  }
+
+  @media (min-width: 700px) {
+    .grid {
+      grid-template-columns: 1fr 1fr;
+    }
+  }
+</style>
+</head>
+<body>
+<main>
+  <div class="status" role="status" aria-live="polite">
+    <span class="status-dot" aria-hidden="true"></span>
+    <span id="connection-status-text">Offline crisis resources are ready on this device.</span>
+  </div>
+
+  <h1>You are not alone right now.</h1>
+  <p class="lede">
+    Your connection is weak or offline. These crisis resources are saved locally so you can still reach help.
+  </p>
+
+  <section class="urgent-box" aria-labelledby="urgent-help-title">
+    <h2 class="section-title" id="urgent-help-title">Immediate help</h2>
+    <p>If you might act on suicidal thoughts, contact a real person now. Stay with another person if you can.</p>
+    <div class="actions">
+      <a class="action-btn" href="tel:988" aria-label="Call 988 now">Call 988 now</a>
+      <a class="action-btn secondary" href="sms:741741&body=HOME" aria-label="Text HOME to 741741 for Crisis Text Line">Text HOME to 741741 — Crisis Text Line</a>
+      <button class="action-btn retry" id="retry-connection" type="button">Retry connection</button>
+    </div>
+    <p class="small" style="margin-top: 14px;">If you are in immediate danger or have already taken action, call emergency services now.</p>
+  </section>
+
+  <div class="grid">
+    <section class="panel" aria-labelledby="grounding-title">
+      <h2 class="section-title" id="grounding-title">5-4-3-2-1 grounding</h2>
+      <ol class="grounding-steps">
+        <li>5 things you can see</li>
+        <li>4 things you can feel</li>
+        <li>3 things you can hear</li>
+        <li>2 things you can smell</li>
+        <li>1 thing you can taste</li>
+      </ol>
+      <p class="small" style="margin-top: 14px;">Say each one out loud if you can. Slow is okay.</p>
+    </section>
+
+    <section class="panel" aria-labelledby="next-steps-title">
+      <h2 class="section-title" id="next-steps-title">Next small steps</h2>
+      <ul>
+        <li>Put some distance between yourself and anything you could use to hurt yourself.</li>
+        <li>Move closer to another person, a front desk, or a public place if possible.</li>
+        <li>Drink water or hold something cold in your hand.</li>
+        <li>Breathe in for 4, hold for 4, out for 6. Repeat 5 times.</li>
+        <li>Text or call one safe person and say: “I need you with me right now.”</li>
+      </ul>
+    </section>
+  </div>
+
+  <section class="panel" aria-labelledby="hope-title">
+    <h2 class="section-title" id="hope-title">Stay through the next ten minutes</h2>
+    <p>Do not solve your whole life right now. Stay for the next breath. Then the next one.</p>
+    <p class="small">If the connection comes back, you can return to The Door chat. Until then, the fastest path to a real person is still 988.</p>
+  </section>
+</main>
+
+<script>
+  (function () {
+    var statusText = document.getElementById('connection-status-text');
+    var retryButton = document.getElementById('retry-connection');
+
+    function updateStatus() {
+      statusText.textContent = navigator.onLine
+        ? 'Connection is back. You can reopen chat now.'
+        : 'Offline crisis resources are ready on this device.';
+    }
+
+    retryButton.addEventListener('click', function () {
+      if (navigator.onLine) {
+        window.location.href = '/';
+        return;
+      }
+      window.location.reload();
+    });
+
+    window.addEventListener('online', updateStatus);
+    window.addEventListener('offline', updateStatus);
+    updateStatus();
+  })();
+</script>
+</body>
+</html>
--- a/crisis/ab_test.py
+++ b/crisis/ab_test.py
@@ -0,0 +1,366 @@
+"""
+Crisis Detection A/B Test Framework for the-door.
+
+Run two detection algorithms side-by-side, log which variant fires,
+and collect metrics (false positive rate, detection latency) per variant.
+
+Usage:
+    from crisis.ab_test import ABTestConfig, CrisisABDetector, ABMetrics
+
+    config = ABTestConfig(variant="B", false_positive_labels=["stress", "venting"])
+    detector = CrisisABDetector(config=config)
+    metrics = ABMetrics()
+
+    result = detector.detect("I can't go on anymore")
+    metrics.record(result, variant=config.variant, latency_ms=12.3)
+
+    report = metrics.report()
+"""
+
+import os
+import json
+import time
+import hashlib
+import logging
+from dataclasses import dataclass, field
+from typing import List, Optional, Dict
+from pathlib import Path
+
+from crisis.detect import (
+    detect_crisis,
+    CrisisDetectionResult,
+    SCORES,
+    MEDIUM_INDICATORS,
+    HIGH_INDICATORS,
+    CRITICAL_INDICATORS,
+    LOW_INDICATORS,
+    ACTIONS,
+)
+
+logger = logging.getLogger("crisis.ab_test")
+
+
+# ── Feature Flag ──────────────────────────────────────────────────────────
+
+@dataclass
+class ABTestConfig:
+    """Configuration for A/B testing crisis detection algorithms.
+
+    variant: "A" (canonical) or "B" (experimental)
+    false_positive_labels: known non-crisis patterns for FP tracking
+    log_path: where to write event logs (JSONL)
+    seed: deterministic hash seed for consistent assignment
+    """
+    variant: str = "A"
+    false_positive_labels: List[str] = field(default_factory=list)
+    log_path: Optional[str] = None
+    seed: str = "the-door-ab-test"
+
+    def __post_init__(self):
+        if self.variant not in ("A", "B"):
+            raise ValueError(f"variant must be 'A' or 'B', got '{self.variant}'")
+
+    @classmethod
+    def from_env(cls) -> "ABTestConfig":
+        """Load config from environment variables.
+
+        CRISIS_AB_VARIANT=A|B
+        CRISIS_AB_FP_LABELS=stress,venting,testing
+        CRISIS_AB_LOG_PATH=/tmp/crisis_ab.jsonl
+        """
+        variant = os.environ.get("CRISIS_AB_VARIANT", "A")
+        fp_raw = os.environ.get("CRISIS_AB_FP_LABELS", "")
+        fp_labels = [l.strip() for l in fp_raw.split(",") if l.strip()]
+        log_path = os.environ.get("CRISIS_AB_LOG_PATH") or None
+        return cls(variant=variant, false_positive_labels=fp_labels, log_path=log_path)
+
+    @staticmethod
+    def assign(text: str, seed: str = "the-door-ab-test") -> str:
+        """Deterministically assign a variant based on text hash.
+
+        Same input always gets the same variant, ensuring consistency
+        within a conversation thread.
+        """
+        h = hashlib.sha256(f"{seed}:{text}".encode()).hexdigest()
+        return "A" if int(h, 16) % 2 == 0 else "B"
+
+
+# ── Variant B: Experimental Detection Algorithm ───────────────────────────
+
+VARIANT_B_MEDIUM_THRESHOLD = 1  # Variant A requires 2
+
+
+def _find_indicators_b(text: str) -> dict:
+    """Variant B indicator search — same patterns, different aggregation."""
+    import re
+    results = {"CRITICAL": [], "HIGH": [], "MEDIUM": [], "LOW": []}
+
+    for pattern in CRITICAL_INDICATORS:
+        m = re.search(pattern, text)
+        if m:
+            results["CRITICAL"].append({"pattern": pattern, "start": m.start(), "end": m.end()})
+
+    for pattern in HIGH_INDICATORS:
+        m = re.search(pattern, text)
+        if m:
+            results["HIGH"].append({"pattern": pattern, "start": m.start(), "end": m.end()})
+
+    for pattern in MEDIUM_INDICATORS:
+        m = re.search(pattern, text)
+        if m:
+            results["MEDIUM"].append({"pattern": pattern, "start": m.start(), "end": m.end()})
+
+    for pattern in LOW_INDICATORS:
+        m = re.search(pattern, text)
+        if m:
+            results["LOW"].append({"pattern": pattern, "start": m.start(), "end": m.end()})
+
+    return results
+
+
+def detect_crisis_b(text: str) -> CrisisDetectionResult:
+    """Variant B detection: lower MEDIUM threshold, weighted scoring.
+
+    Differences from variant A (detect_crisis):
+    - MEDIUM tier triggers at 1 indicator (A requires 2)
+    - Score boosted by 0.1 when multiple tiers fire simultaneously
+    - Same CRITICAL/HIGH behavior (single match = trigger)
+    """
+    if not text or not text.strip():
+        return CrisisDetectionResult(level="NONE", score=0.0)
+
+    text_lower = text.lower()
+    matches = _find_indicators_b(text_lower)
+
+    if not matches:
+        return CrisisDetectionResult(level="NONE", score=0.0)
+
+    # CRITICAL and HIGH: same as variant A — single match
+    for tier in ("CRITICAL", "HIGH"):
+        if matches[tier]:
+            patterns = [m["pattern"] for m in matches[tier]]
+            score = SCORES[tier]
+            active_tiers = sum(1 for t in matches if matches[t] and t != tier)
+            if active_tiers > 0:
+                score = min(1.0, score + 0.1)
+            return CrisisDetectionResult(
+                level=tier,
+                indicators=patterns,
+                recommended_action=ACTIONS[tier],
+                score=score,
+                matches=matches[tier],
+            )
+
+    # MEDIUM tier: variant B requires only 1 indicator (A requires 2)
+    if len(matches["MEDIUM"]) >= VARIANT_B_MEDIUM_THRESHOLD:
+        patterns = [m["pattern"] for m in matches["MEDIUM"]]
+        score = SCORES["MEDIUM"]
+        active_tiers = sum(1 for t in matches if matches[t] and t != "MEDIUM")
+        if active_tiers > 0:
+            score = min(1.0, score + 0.1)
+        return CrisisDetectionResult(
+            level="MEDIUM",
+            indicators=patterns,
+            recommended_action=ACTIONS["MEDIUM"],
+            score=score,
+            matches=matches["MEDIUM"],
+        )
+
+    if matches["LOW"]:
+        patterns = [m["pattern"] for m in matches["LOW"]]
+        return CrisisDetectionResult(
+            level="LOW",
+            indicators=patterns,
+            recommended_action=ACTIONS["LOW"],
+            score=SCORES["LOW"],
+            matches=matches["LOW"],
+        )
+
+    return CrisisDetectionResult(level="NONE", score=0.0)
+
+
+# ── A/B Detector Wrapper ─────────────────────────────────────────────────
+
+@dataclass
+class ABDetectionResult:
+    """Detection result enriched with A/B metadata."""
+    detection: CrisisDetectionResult
+    variant: str
+    text_hash: str
+    timestamp: float = field(default_factory=time.time)
+
+    @property
+    def level(self) -> str:
+        return self.detection.level
+
+    @property
+    def score(self) -> float:
+        return self.detection.score
+
+    @property
+    def indicators(self) -> List[str]:
+        return self.detection.indicators
+
+    def to_dict(self) -> dict:
+        return {
+            "variant": self.variant,
+            "level": self.level,
+            "score": self.score,
+            "indicators": self.indicators,
+            "text_hash": self.text_hash,
+            "timestamp": self.timestamp,
+        }
+
+
+class CrisisABDetector:
+    """A/B detector that routes to variant A or B based on config."""
+
+    def __init__(self, config: Optional[ABTestConfig] = None):
+        self.config = config or ABTestConfig()
+        self._detect_a = detect_crisis
+        self._detect_b = detect_crisis_b
+
+    def detect(self, text: str, variant: Optional[str] = None) -> ABDetectionResult:
+        """Run detection on the configured variant."""
+        v = variant or self.config.variant
+        text_hash = hashlib.sha256(text.encode()).hexdigest()[:16]
+
+        start = time.monotonic()
+        if v == "A":
+            result = self._detect_a(text)
+        else:
+            result = self._detect_b(text)
+        elapsed_ms = (time.monotonic() - start) * 1000
+
+        ab_result = ABDetectionResult(
+            detection=result,
+            variant=v,
+            text_hash=text_hash,
+            timestamp=time.time(),
+        )
+
+        self._log_event(ab_result, elapsed_ms)
+        return ab_result
+
+    def detect_both(self, text: str) -> Dict[str, ABDetectionResult]:
+        """Run both variants and return results for comparison."""
+        return {
+            "A": self.detect(text, variant="A"),
+            "B": self.detect(text, variant="B"),
+        }
+
+    def _log_event(self, result: ABDetectionResult, latency_ms: float):
+        """Append event to JSONL log if configured."""
+        if not self.config.log_path:
+            return
+        try:
+            entry = result.to_dict()
+            entry["latency_ms"] = round(latency_ms, 3)
+            log_file = Path(self.config.log_path)
+            log_file.parent.mkdir(parents=True, exist_ok=True)
+            with open(log_file, "a") as f:
+                f.write(json.dumps(entry) + "\n")
+        except Exception as e:
+            logger.warning(f"Failed to write A/B log: {e}")
+
+
+# ── Metrics ───────────────────────────────────────────────────────────────
+
+@dataclass
+class ABMetrics:
+    """Collect and report A/B test metrics.
+
+    Tracks per-variant:
+    - total detections
+    - detections by level (NONE, LOW, MEDIUM, HIGH, CRITICAL)
+    - false positive count (based on labeled data)
+    - average latency
+    """
+
+    _events: List[dict] = field(default_factory=list)
+
+    def record(
+        self,
+        result: ABDetectionResult,
+        variant: Optional[str] = None,
+        latency_ms: float = 0.0,
+        is_false_positive: bool = False,
+    ):
+        """Record one detection event."""
+        v = variant or result.variant
+        self._events.append({
+            "variant": v,
+            "level": result.level,
+            "score": result.score,
+            "latency_ms": latency_ms,
+            "is_false_positive": is_false_positive,
+            "timestamp": result.timestamp,
+        })
+
+    def report(self) -> dict:
+        """Generate metrics report per variant."""
+        report = {}
+        for v in ("A", "B"):
+            events = [e for e in self._events if e["variant"] == v]
+            if not events:
+                report[v] = {"total": 0}
+                continue
+
+            levels = {}
+            for e in events:
+                levels[e["level"]] = levels.get(e["level"], 0) + 1
+
+            fp_count = sum(1 for e in events if e.get("is_false_positive"))
+            latencies = [e["latency_ms"] for e in events if e["latency_ms"] > 0]
+
+            report[v] = {
+                "total": len(events),
+                "levels": levels,
+                "false_positive_count": fp_count,
+                "false_positive_rate": round(fp_count / len(events), 4) if events else 0,
+                "avg_latency_ms": round(sum(latencies) / len(latencies), 3) if latencies else 0,
+                "max_latency_ms": round(max(latencies), 3) if latencies else 0,
+                "detection_rate": round(
+                    sum(1 for e in events if e["level"] != "NONE") / len(events), 4
+                ) if events else 0,
+            }
+
+        # Comparison when both variants have data
+        if report.get("A", {}).get("total", 0) > 0 and report.get("B", {}).get("total", 0) > 0:
+            report["_comparison"] = {
+                "detection_rate_delta": (
+                    report["B"]["detection_rate"] - report["A"]["detection_rate"]
+                ),
+                "fp_rate_delta": (
+                    report["B"]["false_positive_rate"] - report["A"]["false_positive_rate"]
+                ),
+                "latency_delta_ms": (
+                    report["B"]["avg_latency_ms"] - report["A"]["avg_latency_ms"]
+                ),
+            }
+
+        return report
+
+    def summary(self) -> str:
+        """Human-readable summary."""
+        r = self.report()
+        lines = ["=== Crisis Detection A/B Test Report ==="]
+        for v in ("A", "B"):
+            if v not in r or r[v].get("total", 0) == 0:
+                lines.append(f"  Variant {v}: no data")
+                continue
+            d = r[v]
+            lines.append(f"  Variant {v}: {d['total']} events")
+            lines.append(f"    Detection rate: {d['detection_rate']:.1%}")
+            lines.append(f"    False positive rate: {d['false_positive_rate']:.1%}")
+            lines.append(f"    Avg latency: {d['avg_latency_ms']:.2f}ms")
+            lines.append(f"    Levels: {d['levels']}")
+
+        if "_comparison" in r:
+            c = r["_comparison"]
+            lines.append("  Comparison (B - A):")
+            lines.append(f"    Detection rate delta: {c['detection_rate_delta']:+.1%}")
+            lines.append(f"    FP rate delta: {c['fp_rate_delta']:+.1%}")
+            lines.append(f"    Latency delta: {c['latency_delta_ms']:+.2f}ms")
+
+        return "\n".join(lines)
--- a/crisis/detect.py
+++ b/crisis/detect.py
@@ -51,13 +51,13 @@ HIGH_INDICATORS = [
    r"\bwish\s+I\s+(?:was|were)\s+(?:dead|gone|never\s+born)\b",
    r"\bdon'?t\s+matter\s+if\s+I\s+exist\b",
    r"\bno\s+one\s+would\s+(?:care|miss)\b",
-    r"\bworld\s+would?\s+be\s+better\s+without\b",
-    r"\bin\s+so\s+much\s+(?:pain|agony|suffering|torment)\b",
-    r"\bcan'?t\s+see\s+any\s+(?:point|reason)\b",
+    r"\bworld\s+would?\s+be\s+better\s+without\s+me\b",
+    r"\bin\s+so\s+much\s+(?:pain|agony|suffering|torment|anguish)\b",
+    r"\bcan'?t\s+see\s+any\s+(?:point|reason|hope|way)\b",
    r"\bescape\s+from\s*this",
    r"\bjust\s+want\s+it\s+to\s+stop\b",
-    r"\btrapped\s+(?:in\s+(?:my|this|a\s+dark)|and\s+can'?t\s+escape)\b",
    r"\bnothing\s+left\s+(?:to\s+(?:live\s+for|hope\s+for|give)|inside)\b",
+    r"\bdisappeared\s+forever\b",
    # Contextual despair phrases (from crisis_detector.py legacy)
    r"\bfeel(?:s|ing)?\s+(?:so\s+)?hopeless\b",
    r"\beverything\s+is\s+hopeless\b",
@@ -68,6 +68,8 @@ HIGH_INDICATORS = [
    r"\bno\s*hope\s+(?:left|remaining)\b",
    r"\bno\s*way\s*out\b",
    r"\bfeel(?:s|ing)?\s+trapped\b",
+    r"\btrapped\s+in\s+this\s+(?:situation|life|pain|darkness|hell)\b",
+    r"\btrapped\s+and\s+can'?t\s+escape\b",
    r"\bdesperate\s+(?:for\s+)?help\b",
    r"\bfeel(?:s|ing)?\s+desperate\b",
 ]
@@ -99,6 +101,8 @@ MEDIUM_INDICATORS = [
    r"\bsinking\b",
    r"\bdrowning\b",
    r"\bhopeless\b",
+    r"\blost\s+all\s+hope\b",
+    r"\bno\s+tomorrow\b",
    # Contextual versions (from crisis_detector.py legacy)
    r"\bfeel(?:s|ing)?\s+(?:so\s+)?worthless\b",
    r"\bfeel(?:s|ing)?\s+(?:so\s+)?hopeless\b",
@@ -112,7 +116,7 @@ MEDIUM_INDICATORS = [
 LOW_INDICATORS = [
    r"\bunhappy\b",
    r"\bdown\b",
-    r"\btough\s*time\b",
+    r"\btough\s*(?:time|day|week)\b",
    r"\brough\s+(?:day|week|patch)\b",
    r"\bstressed\b",
    r"\bburnout\b",
@@ -122,6 +126,8 @@ LOW_INDICATORS = [
    r"\btired\b",
    r"\bsad\b",
    r"\bupset\b",
+    r"\blonely\b",
+    r"\banxious?\b",
    r"\bnot\s*(?:good|great|okay)\b",
    r"\bthings\s*are\s*hard\b",
    r"\bstruggling\b",
--- a/dying_detection/init.py
+++ b/dying_detection/init.py
@@ -1,31 +1,34 @@
 """
-When a Man Is Dying — Despair/Suicide Detection System
+DEPRECATED — Use crisis.detect instead.

-Standalone detection module that parses incoming text for
-despair and suicide indicators, classifies into tiers,
-and returns structured response with recommended actions.
+This module is a thin wrapper around crisis.detect for backward compatibility.
+All unique patterns have been merged into crisis/detect.py (see issue #40).

-Tiers:
-  LOW      — General sadness, stress, difficult times
-  MEDIUM   — Hopelessness, isolation, worthlessness
-  HIGH     — Active despair, mentions of death, "can't go on"
-  CRITICAL — Imminent risk, explicit intent, plan, method
-
-Integration:
-  Designed to work with crisis/ module from PR #4.
-  When crisis/ is available, uses it as the detection backend.
-  Falls back to internal detection when crisis/ is not present.
+This module will be removed in a future release.
 """

-import re
-import json
-import hashlib
+import warnings
 from dataclasses import dataclass, field, asdict
 from typing import List, Optional, Dict
+import json
+import hashlib
+
+# Re-export the canonical detection
+from crisis.detect import detect_crisis, CrisisDetectionResult
+
+# Issue deprecation warning on import
+warnings.warn(
+    "dying_detection is deprecated. Use 'from crisis.detect import detect_crisis' instead. "
+    "All patterns have been consolidated into crisis/detect.py. "
+    "See issue #40.",
+    DeprecationWarning,
+    stacklevel=2,
+)


@dataclass
 class DetectionResult:
+    """Backward-compatible result type matching the old dying_detection API."""
    level: str
    indicators: List[str] = field(default_factory=list)
    recommended_action: str = ""
@@ -34,110 +37,9 @@ class DetectionResult:
    session_hash: str = ""


-# ── Tiered indicator patterns ───────────────────────────────────
-# Each pattern is a regex matched against lowercased input.
-
-CRITICAL_PATTERNS = [
-    (r"\bkill\s*(my)?self\b", "explicit self-harm intent"),
-    (r"\bsuicid(?:al|ed|e)\b", "suicide reference"),
-    (r"\bend\s*(my)?\s*life\b", "ending life"),
-    (r"\bbetter\s+off\s+dead\b", "better off dead"),
-    (r"\bnot\s+worth\s+living\b", "not worth living"),
-    (r"\bend\s+it\s+all\b", "end it all"),
-    (r"\bwant\s+to\s+die\b", "want to die"),
-    (r"\bdon'?t\s+want\s+to\s+live\b", "don't want to live"),
-    (r"\bcan'?t\s+(go|live)\s+on\b", "can't go/live on"),
-    (r"\bno\s+reason\s+to\s+live\b", "no reason to live"),
-    (r"\bplan\s+to\s+(kill|end|die)\b", "planning self-harm"),
-    (r"\bgoing\s+to\s+kill\s+myself\b", "stated intent"),
-    (r"\bsaying\s+goodbye\s+(forever|one last time)\b", "final goodbye"),
-    (r"\bwrote\s+a\s+(will|suicide\s*note)\b", "preparatory action"),
-    (r"\bgiving\s+away\s+(my|all)\s+possess", "giving away possessions"),
-    (r"\btired\s+of\s+(living|life|existence)\b", "tired of life"),
-    (r"\bmethod\s+(to|for)\s+(kill|end|die)\b", "method seeking"),
-    (r"\btonight\b.*\b(die|kill|end|suicid)", "immediate timeframe + intent"),
-    (r"\b(die|kill|end)\b.*\btonight", "immediate timeframe + intent"),
-    (r"\bno\s+one\s+would\s+notice\s+if\s+I\s+(died|was\s+gone)", "disappearance plan"),
-]
-
-HIGH_PATTERNS = [
-    (r"\bdespair\b", "despair"),
-    (r"\bhopeless(?:ness)?\b", "hopelessness"),
-    (r"\bcan'?t\s+take\s+this\s+anymore\b", "can't take it"),
-    (r"\bdon'?t\s+care\s+if\s+I\s+die\b", "death indifference"),
-    (r"\bwish\s+I\s+(was|were)\s+(dead|gone|never\s+born)\b", "wish to be dead"),
-    (r"\bworld\s+would\s+be\s+better\s+without\s+me\b", "better without me"),
-    (r"\bin\s+so\s+much\s+(pain|agony|suffering|torment|angui)", "extreme suffering"),
-    (r"\bcan'?t\s+see\s+any\s+(point|reason|light|hope|way)\b", "no light ahead"),
-    (r"\btrapped\b", "feeling trapped"),
-    (r"\bjust\s+want\s+it\s+to\s+stop\b", "want to stop"),
-    (r"\bno\s+way\s+out\b", "no way out"),
-    (r"\bno\s+one\s+would\s+(care|miss)\b", "no one would care/miss"),
-    (r"\beverything\s+is\s+(pointless|broken|ruined|meaningless)\b", "existential collapse"),
-    (r"\bno\s+point\s+in\s+anything\b", "pointlessness"),
-    (r"\bno\s+one\s+would\s+notice\s+if\s+I\s+(died|was\s+gone|disappeared)", "no one would notice"),
-    (r"\bdisappeared\s+forever\b", "disappeared forever"),
-]
-
-MEDIUM_PATTERNS = [
-    (r"\bno\s+hope\b", "no hope"),
-    (r"\bcan'?t\s+go\s+on\b", "can't go on"),
-    (r"\bcan'?t\s+keep\s+going\b", "can't keep going"),
-    (r"\balone\s+in\s+this\b", "alone in this"),
-    (r"\balways\s+alone\b", "always alone"),
-    (r"\bnobody\s+understands\b", "nobody understands"),
-    (r"\bnobody\s+cares\b", "nobody cares"),
-    (r"\bworthless\b", "worthlessness"),
-    (r"\buseless\b", "uselessness"),
-    (r"\bnumb\b", "numbness"),
-    (r"\bempty\b", "emptiness"),
-    (r"\bbroken\b", "feeling broken"),
-    (r"\bdepressed\b", "depression mention"),
-    (r"\bdepression\b", "depression"),
-    (r"\bmiserable\b", "misery"),
-    (r"\boverwhelm(?:ed|ing)\b", "overwhelmed"),
-    (r"\bcannot\s+cope\b", "cannot cope"),
-    (r"\b(drowning|sinking)\b", "drowning/sinking"),
-    (r"\bforgotten\b", "feeling forgotten"),
-    (r"\blost\s+all\s+hope\b", "lost all hope"),
-    (r"\bno\s+future\b", "no future"),
-    (r"\bno\s+tomorrow\b", "no tomorrow"),
-]
-
-LOW_PATTERNS = [
-    (r"\bunhappy\b", "unhappy"),
-    (r"\brough\s+(day|week|patch)\b", "rough time"),
-    (r"\btough\s+(time|day|week)\b", "tough time"),
-    (r"\bstressed\b", "stressed"),
-    (r"\bburnout\b", "burnout"),
-    (r"\bfrustrated\b", "frustrated"),
-    (r"\bthings\s+(are\s+)?hard\b", "things are hard"),
-    (r"\bnot\s+feeling\s+(great|myself|good)\b", "not feeling good"),
-    (r"\bstruggl", "struggling"),
-    (r"\bdown\b", "feeling down"),
-    (r"\bsad\b", "sad"),
-    (r"\bupset\b", "upset"),
-    (r"\blonely\b", "lonely"),
-    (r"\banxious?\b", "anxious/anxiety"),
-    (r"\bnot\s+okay\b", "not okay"),
-]
-
-# ── Pattern collections for easy iteration ──────────────────────
-
-TIER_PATTERNS: Dict[str, List[tuple]] = {
-    "CRITICAL": CRITICAL_PATTERNS,
-    "HIGH": HIGH_PATTERNS,
-    "MEDIUM": MEDIUM_PATTERNS,
-    "LOW": LOW_PATTERNS,
-}
-
-
 def detect(text: str) -> DetectionResult:
    """
-    Primary detection function.
-
-    If the crisis/ module is available, delegate to it.
-    Otherwise, use the internal pattern engine.
+    Primary detection function — delegates to crisis.detect.

    Args:
        text: User message to analyze
@@ -145,150 +47,25 @@ def detect(text: str) -> DetectionResult:
    Returns:
        DetectionResult with level, indicators, recommended_action, confidence
    """
-    # Try to use the crisis module if available
-    try:
-        from crisis.detect import detect_crisis as _crisis_detect
-        result = _crisis_detect(text)
-        # Map to DetectionResult
-        return DetectionResult(
-            level=result.level,
-            indicators=_describe_indicators(result.level, result.indicators),
-            recommended_action=result.recommended_action,
-            confidence=result.score,
-            session_hash=_hash_session(text),
-        )
-    except ImportError:
-        pass
+    result = detect_crisis(text)

-    return _detect_internal(text)
+    # Extract raw patterns from matches
+    raw_patterns = [m["pattern"] for m in result.matches] if result.matches else []

-
-def _detect_internal(text: str) -> DetectionResult:
-    """Internal pattern-based detection (fallback)."""
-    if not text or not text.strip():
-        return DetectionResult(level="NONE", session_hash=_hash_session(text))
-
-    text_lower = text.lower()
-    all_matches: Dict[str, List[tuple]] = {
-        tier: [] for tier in TIER_PATTERNS
-    }
-
-    for tier, patterns in TIER_PATTERNS.items():
-        for pattern, description in patterns:
-            if re.search(pattern, text_lower):
-                all_matches[tier].append((pattern, description))
-
-    # CRITICAL patterns are the highest priority
-    if all_matches["CRITICAL"]:
-        return DetectionResult(
-            level="CRITICAL",
-            indicators=[desc for _, desc in all_matches["CRITICAL"]],
-            recommended_action=(
-                "INTERRUPT CONVERSATION IMMEDIATELY. "
-                "Ask 'Are you safe right now?' "
-                "Provide 988 Suicide & Crisis Lifeline (call or text 988). "
-                "Provide Crisis Text Line (text HOME to 741741). "
-                "Stay present. Do not disconnect. "
-                "Redirect to professional help. "
-                "This is the most sacred moment."
-            ),
-            raw_matched_patterns=[pat for pat, _ in all_matches["CRITICAL"]],
-            confidence=1.0,
-            session_hash=_hash_session(text),
-        )
-
-    if all_matches["HIGH"]:
-        return DetectionResult(
-            level="HIGH",
-            indicators=[desc for _, desc in all_matches["HIGH"]],
-            recommended_action=(
-                "Show crisis panel prominently. "
-                "Ask about safety directly. "
-                "Surface 988 number and crisis resources. "
-                "Stay present and engaged. Do not rush to fix. "
-                "Monitor closely for escalation."
-            ),
-            raw_matched_patterns=[pat for pat, _ in all_matches["HIGH"]],
-            confidence=0.75,
-            session_hash=_hash_session(text),
-        )
-
-    if all_matches["MEDIUM"]:
-        return DetectionResult(
-            level="MEDIUM",
-            indicators=[desc for _, desc in all_matches["MEDIUM"]],
-            recommended_action=(
-                "Increase warmth and presence. "
-                "Subtly surface help resources. "
-                "Keep conversation anchored in the present. "
-                "Watch for escalation indicators."
-            ),
-            raw_matched_patterns=[pat for pat, _ in all_matches["MEDIUM"]],
-            confidence=0.5,
-            session_hash=_hash_session(text),
-        )
-
-    if all_matches["LOW"]:
-        return DetectionResult(
-            level="LOW",
-            indicators=[desc for _, desc in all_matches["LOW"]],
-            recommended_action=(
-                "Normal conversation with warm undertone. "
-                "No crisis UI elements needed. "
-                "Remain vigilant. Be present."
-            ),
-            raw_matched_patterns=[pat for pat, _ in all_matches["LOW"]],
-            confidence=0.25,
-            session_hash=_hash_session(text),
-        )
-
-    return DetectionResult(level="NONE", session_hash=_hash_session(text))
-
-
-def _describe_indicators(level: str, patterns: list) -> list:
-    """Map raw patterns to descriptions."""
-    descriptions = {
-        "CRITICAL": [],
-        "HIGH": [],
-        "MEDIUM": [],
-        "LOW": [],
-    }
-    for tier, items in TIER_PATTERNS.items():
-        for pat, desc in items:
-            if pat in patterns:
-                descriptions[tier].append(desc)
-    return descriptions.get(level, [])
-
-
-def _hash_session(text: str) -> str:
-    """Create a session hash for this text (for tracking repeated escalations)."""
-    return hashlib.sha256(text.encode()).hexdigest()[:12]
+    return DetectionResult(
+        level=result.level,
+        indicators=result.indicators,
+        recommended_action=result.recommended_action,
+        raw_matched_patterns=raw_patterns,
+        confidence=result.score,
+        session_hash=hashlib.sha256(text.encode()).hexdigest()[:12],
+    )


 def get_action_for_level(level: str) -> str:
    """Get the recommended action string for a given level."""
-    actions = {
-        "CRITICAL": (
-            "INTERRUPT CONVERSATION. Ask 'Are you safe right now?' "
-            "Provide 988. Provide Crisis Text Line. "
-            "Stay present. Do not disconnect. "
-            "Redirect to help."
-        ),
-        "HIGH": (
-            "Show crisis panel. Ask about safety. "
-            "Surface 988. Stay engaged."
-        ),
-        "MEDIUM": (
-            "Increase warmth. Surface resources gently. "
-            "Anchor in present."
-        ),
-        "LOW": (
-            "Normal conversation with warmth. "
-            "Remain vigilant."
-        ),
-        "NONE": "No action needed.",
-    }
-    return actions.get(level, "Unknown level.")
+    from crisis.detect import ACTIONS
+    return ACTIONS.get(level, "Unknown level.")


 def as_json(result: DetectionResult, indent: int = 2) -> str:
--- a/index.html
+++ b/index.html
@@ -983,12 +983,60 @@ Sovereignty and service always.`;


  // ===== OVERLAY =====
+
+  // Focus trap: cycle through focusable elements within the crisis overlay
+  function getOverlayFocusableElements() {
+    return crisisOverlay.querySelectorAll(
+      'a[href], button:not([disabled]), [tabindex]:not([tabindex="-1"])'
+    );
+  }
+
+  function trapFocusInOverlay(e) {
+    if (!crisisOverlay.classList.contains('active')) return;
+    if (e.key !== 'Tab') return;
+
+    var focusable = getOverlayFocusableElements();
+    if (focusable.length === 0) return;
+
+    var first = focusable[0];
+    var last = focusable[focusable.length - 1];
+
+    if (e.shiftKey) {
+      // Shift+Tab: if on first, wrap to last
+      if (document.activeElement === first) {
+        e.preventDefault();
+        last.focus();
+      }
+    } else {
+      // Tab: if on last, wrap to first
+      if (document.activeElement === last) {
+        e.preventDefault();
+        first.focus();
+      }
+    }
+  }
+
+  // Store the element that had focus before the overlay opened
+  var _preOverlayFocusElement = null;
+
  function showOverlay() {
+    // Save current focus for restoration on dismiss
+    _preOverlayFocusElement = document.activeElement;
+
    crisisOverlay.classList.add('active');
    overlayDismissBtn.disabled = true;
    var countdown = 10;
    overlayDismissBtn.textContent = 'Continue to chat (' + countdown + 's)';

+    // Disable background interaction via inert attribute
+    var mainApp = document.querySelector('.app');
+    if (mainApp) mainApp.setAttribute('inert', '');
+    // Also hide from assistive tech
+    var chatSection = document.getElementById('chat');
+    if (chatSection) chatSection.setAttribute('aria-hidden', 'true');
+    var footerEl = document.querySelector('footer');
+    if (footerEl) footerEl.setAttribute('aria-hidden', 'true');
+
    if (overlayTimer) clearInterval(overlayTimer);
    overlayTimer = setInterval(function() {
      countdown--;
@@ -1005,6 +1053,9 @@ Sovereignty and service always.`;
    overlayDismissBtn.focus();
  }

+  // Register focus trap on document (always listening, gated by class check)
+  document.addEventListener('keydown', trapFocusInOverlay);
+
  overlayDismissBtn.addEventListener('click', function() {
    if (!overlayDismissBtn.disabled) {
      crisisOverlay.classList.remove('active');
@@ -1012,7 +1063,22 @@ Sovereignty and service always.`;
        clearInterval(overlayTimer);
        overlayTimer = null;
      }
-      msgInput.focus();
+
+      // Re-enable background interaction
+      var mainApp = document.querySelector('.app');
+      if (mainApp) mainApp.removeAttribute('inert');
+      var chatSection = document.getElementById('chat');
+      if (chatSection) chatSection.removeAttribute('aria-hidden');
+      var footerEl = document.querySelector('footer');
+      if (footerEl) footerEl.removeAttribute('aria-hidden');
+
+      // Restore focus to the element that had it before the overlay opened
+      if (_preOverlayFocusElement && typeof _preOverlayFocusElement.focus === 'function') {
+        _preOverlayFocusElement.focus();
+      } else {
+        msgInput.focus();
+      }
+      _preOverlayFocusElement = null;
    }
  });

@@ -1117,25 +1183,14 @@ Sovereignty and service always.`;
    } catch (e) {}
  }

-  safetyPlanBtn.addEventListener('click', function() {
-    loadSafetyPlan();
-    safetyPlanModal.classList.add('active');
-  });
-
-  // Crisis panel safety plan button (if crisis panel is visible)
-  if (crisisSafetyPlanBtn) {
-    crisisSafetyPlanBtn.addEventListener('click', function() {
-      loadSafetyPlan();
-      safetyPlanModal.classList.add('active');
-    });
-  }
-
  closeSafetyPlan.addEventListener('click', function() {
    safetyPlanModal.classList.remove('active');
+    _restoreSafetyPlanFocus();
  });

  cancelSafetyPlan.addEventListener('click', function() {
    safetyPlanModal.classList.remove('active');
+    _restoreSafetyPlanFocus();
  });

  saveSafetyPlan.addEventListener('click', function() {
@@ -1149,12 +1204,101 @@ Sovereignty and service always.`;
    try {
      localStorage.setItem('timmy_safety_plan', JSON.stringify(plan));
      safetyPlanModal.classList.remove('active');
+      _restoreSafetyPlanFocus();
      alert('Safety plan saved locally.');
    } catch (e) {
      alert('Error saving plan.');
    }
  });

+  // ===== SAFETY PLAN FOCUS TRAP (fix #65) =====
+  // Focusable elements inside the modal, in tab order
+  var _spFocusableIds = [
+    'close-safety-plan',
+    'sp-warning-signs',
+    'sp-coping',
+    'sp-distraction',
+    'sp-help',
+    'sp-environment',
+    'cancel-safety-plan',
+    'save-safety-plan'
+  ];
+  var _spTriggerEl = null; // element that opened the modal
+
+  function _getSpFocusableEls() {
+    return _spFocusableIds
+      .map(function(id) { return document.getElementById(id); })
+      .filter(function(el) { return el && !el.disabled; });
+  }
+
+  function _trapSafetyPlanFocus(e) {
+    if (e.key !== 'Tab') return;
+    var els = _getSpFocusableEls();
+    if (!els.length) return;
+    var first = els[0];
+    var last = els[els.length - 1];
+
+    if (e.shiftKey) {
+      // Shift+Tab on first → wrap to last
+      if (document.activeElement === first) {
+        e.preventDefault();
+        last.focus();
+      }
+    } else {
+      // Tab on last → wrap to first
+      if (document.activeElement === last) {
+        e.preventDefault();
+        first.focus();
+      }
+    }
+  }
+
+  function _trapSafetyPlanEscape(e) {
+    if (e.key === 'Escape') {
+      safetyPlanModal.classList.remove('active');
+      _restoreSafetyPlanFocus();
+    }
+  }
+
+  function _activateSafetyPlanFocusTrap(triggerEl) {
+    _spTriggerEl = triggerEl || document.activeElement;
+    // Focus first textarea
+    var firstInput = document.getElementById('sp-warning-signs');
+    if (firstInput) firstInput.focus();
+    // Add listeners
+    document.addEventListener('keydown', _trapSafetyPlanFocus);
+    document.addEventListener('keydown', _trapSafetyPlanEscape);
+    // Mark background inert (prevent click-through)
+    document.body.setAttribute('aria-hidden', 'true');
+    safetyPlanModal.removeAttribute('aria-hidden');
+  }
+
+  function _restoreSafetyPlanFocus() {
+    document.removeEventListener('keydown', _trapSafetyPlanFocus);
+    document.removeEventListener('keydown', _trapSafetyPlanEscape);
+    document.body.removeAttribute('aria-hidden');
+    if (_spTriggerEl && typeof _spTriggerEl.focus === 'function') {
+      _spTriggerEl.focus();
+    }
+    _spTriggerEl = null;
+  }
+
+  // Wire open buttons to activate focus trap
+  safetyPlanBtn.addEventListener('click', function() {
+    loadSafetyPlan();
+    safetyPlanModal.classList.add('active');
+    _activateSafetyPlanFocusTrap(safetyPlanBtn);
+  });
+
+  // Crisis panel safety plan button (if crisis panel is visible)
+  if (crisisSafetyPlanBtn) {
+    crisisSafetyPlanBtn.addEventListener('click', function() {
+      loadSafetyPlan();
+      safetyPlanModal.classList.add('active');
+      _activateSafetyPlanFocusTrap(crisisSafetyPlanBtn);
+    });
+  }
+
  // ===== TEXTAREA AUTO-RESIZE =====
  msgInput.addEventListener('input', function() {
    this.style.height = 'auto';
@@ -1300,6 +1444,7 @@ Sovereignty and service always.`;
    if (urlParams.get('safetyplan') === 'true') {
      loadSafetyPlan();
      safetyPlanModal.classList.add('active');
+      _activateSafetyPlanFocusTrap(safetyPlanBtn);
      // Clean up URL
      window.history.replaceState({}, document.title, window.location.pathname);
    }
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,5 +1,5 @@
 [pytest]
-testpaths = crisis
-python_files = tests.py
+testpaths = crisis tests
+python_files = tests.py test_*.py
 python_classes = Test*
 python_functions = test_*
--- a/sw.js
+++ b/sw.js
@@ -1,118 +1,153 @@
-const CACHE_NAME = 'the-door-v2';
-const ASSETS = [
+const CACHE_NAME = 'the-door-v3';
+const NAVIGATION_TIMEOUT_MS = 2500;
+const OFFLINE_FALLBACK_PATH = '/crisis-offline.html';
+const PRECACHE_ASSETS = [
  '/',
  '/index.html',
-  '/about',
-  '/manifest.json'
+  '/about.html',
+  '/manifest.json',
+  '/crisis-offline.html',
+  '/testimony.html'
 ];

-// Crisis resources to show when everything fails
-const CRISIS_OFFLINE_RESPONSE = `<!DOCTYPE html>
-<html lang="en">
-<head>
-<meta charset="UTF-8">
-<meta name="viewport" content="width=device-width, initial-scale=1.0">
-<title>You're Not Alone | The Door</title>
-<style>
-body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#0d1117;color:#e6edf3;max-width:600px;margin:0 auto;padding:20px;line-height:1.6}
-h1{color:#ff6b6b;font-size:1.5rem;margin-bottom:1rem}
-.crisis-box{background:#1c1210;border:2px solid #c9362c;border-radius:12px;padding:20px;margin:20px 0;text-align:center}
-.crisis-box a{display:inline-block;background:#c9362c;color:#fff;text-decoration:none;padding:16px 32px;border-radius:8px;font-weight:700;font-size:1.2rem;margin:10px 0}
-.hope{color:#8b949e;font-style:italic;margin-top:30px;padding-top:20px;border-top:1px solid #30363d}
-</style>
-</head>
-<body>
-<h1>You are not alone.</h1>
-<p>Your connection is down, but help is still available.</p>
-<div class="crisis-box">
-  <p><strong>Call or text 988</strong><br>Suicide & Crisis Lifeline<br>Free, 24/7, Confidential</p>
-  <a href="tel:988">Call 988 Now</a>
-  <p style="margin-top:15px"><strong>Or text HOME to 741741</strong><br>Crisis Text Line</p>
-</div>
-<p><strong>When you're ready:</strong></p>
-<ul>
-  <li>Take five deep breaths</li>
-  <li>Drink some water</li>
-  <li>Step outside if you can</li>
-  <li>Text or call someone you trust</li>
-</ul>
-<p class="hope">
-  "The Lord is close to the brokenhearted and saves those who are crushed in spirit." — Psalm 34:18
-</p>
-<p style="font-size:0.85rem;color:#6e7681;margin-top:30px">
-  This page was created by The Door — a crisis intervention project.<br>
-  Connection will restore automatically. You don't have to go through this alone.
-</p>
-</body>
-</html>`;
+function isSameOrigin(request) {
+  return new URL(request.url).origin === self.location.origin;
+}
+
+function canCache(response) {
+  return Boolean(response && response.ok && response.type !== 'opaque');
+}
+
+async function precache() {
+  const cache = await caches.open(CACHE_NAME);
+  await cache.addAll(PRECACHE_ASSETS);
+}
+
+async function cleanupOldCaches() {
+  const keys = await caches.keys();
+  await Promise.all(
+    keys
+      .filter((key) => key !== CACHE_NAME)
+      .map((key) => caches.delete(key))
+  );
+}
+
+async function putInCache(request, response) {
+  if (!isSameOrigin(request) || !canCache(response)) {
+    return response;
+  }
+
+  const cache = await caches.open(CACHE_NAME);
+  await cache.put(request, response.clone());
+  return response;
+}
+
+async function fetchWithTimeout(request, timeoutMs) {
+  const controller = new AbortController();
+  const timeoutId = setTimeout(() => controller.abort(), timeoutMs);
+
+  try {
+    return await fetch(request, { signal: controller.signal });
+  } finally {
+    clearTimeout(timeoutId);
+  }
+}
+
+async function offlineTextResponse() {
+  return new Response('Offline. Call 988 or text HOME to 741741 for immediate help.', {
+    status: 503,
+    statusText: 'Service Unavailable',
+    headers: new Headers({ 'Content-Type': 'text/plain; charset=utf-8' })
+  });
+}
+
+async function handleNavigation(request) {
+  const cache = await caches.open(CACHE_NAME);
+  const cachedPage = await cache.match(request);
+  const offlineFallback = await cache.match(OFFLINE_FALLBACK_PATH);
+
+  try {
+    const response = await fetchWithTimeout(request, NAVIGATION_TIMEOUT_MS);
+    return await putInCache(request, response);
+  } catch (error) {
+    if (cachedPage) {
+      return cachedPage;
+    }
+
+    if (offlineFallback) {
+      return offlineFallback;
+    }
+
+    return offlineTextResponse();
+  }
+}
+
+async function handleStaticRequest(request) {
+  const cache = await caches.open(CACHE_NAME);
+  const cached = await cache.match(request);
+
+  if (cached) {
+    fetch(request)
+      .then((response) => putInCache(request, response))
+      .catch(() => null);
+    return cached;
+  }
+
+  try {
+    const response = await fetch(request);
+    return await putInCache(request, response);
+  } catch (error) {
+    return offlineTextResponse();
+  }
+}
+
+async function handleOtherRequest(request) {
+  try {
+    const response = await fetch(request);
+    return await putInCache(request, response);
+  } catch (error) {
+    const cached = await caches.match(request);
+    if (cached) {
+      return cached;
+    }
+
+    return offlineTextResponse();
+  }
+}

-// Install event - cache core assets
 self.addEventListener('install', (event) => {
  event.waitUntil(
-    caches.open(CACHE_NAME).then((cache) => {
-      return cache.addAll(ASSETS);
-    })
+    precache().then(() => self.skipWaiting())
  );
-  self.skipWaiting();
 });

-// Activate event - cleanup old caches
 self.addEventListener('activate', (event) => {
  event.waitUntil(
-    caches.keys().then((keys) => {
-      return Promise.all(
-        keys.filter((key) => key !== CACHE_NAME).map((key) => caches.delete(key))
-      );
-    })
+    cleanupOldCaches().then(() => self.clients.claim())
  );
-  self.clients.claim();
 });

-// Fetch event - network first, fallback to cache for static,
-// but for the crisis front door, we want to ensure the shell is ALWAYS available.
 self.addEventListener('fetch', (event) => {
-  const url = new URL(event.request.url);
+  const request = event.request;
+  const url = new URL(request.url);

-  // Skip API calls - they should always go to network
-  if (url.pathname.startsWith('/api/')) {
+  if (request.method !== 'GET') {
    return;
  }

-  // Skip non-GET requests
-  if (event.request.method !== 'GET') {
+  if (!isSameOrigin(request) || url.pathname.startsWith('/api/')) {
    return;
  }

-  event.respondWith(
-    fetch(event.request)
-      .then((response) => {
-        // If we got a valid response, cache it for next time
-        if (response.ok && ASSETS.includes(url.pathname)) {
-          const copy = response.clone();
-          caches.open(CACHE_NAME).then((cache) => cache.put(event.request, copy));
-        }
-        return response;
-      })
-      .catch(() => {
-        // If network fails, try cache
-        return caches.match(event.request).then((cached) => {
-          if (cached) return cached;
+  if (event.request.mode === 'navigate') {
+    event.respondWith(handleNavigation(request));
+    return;
+  }

-          // If it's a navigation request and we're offline, show offline crisis page
-          if (event.request.mode === 'navigate') {
-            return new Response(CRISIS_OFFLINE_RESPONSE, {
-              status: 200,
-              headers: new Headers({ 'Content-Type': 'text/html' })
-            });
-          }
+  if (PRECACHE_ASSETS.includes(url.pathname)) {
+    event.respondWith(handleStaticRequest(request));
+    return;
+  }

-          // For other requests, return a simple offline message
-          return new Response('Offline. Call 988 for immediate help.', {
-            status: 503,
-            statusText: 'Service Unavailable',
-            headers: new Headers({ 'Content-Type': 'text/plain' })
-          });
-        });
-      })
-  );
+  event.respondWith(handleOtherRequest(request));
 });
--- a/tests/focus-trap-test.html
+++ b/tests/focus-trap-test.html
@@ -0,0 +1,84 @@
+<!-- Test: Safety plan modal focus trap (issue #65) -->
+<!-- Open this file in a browser to manually verify focus trap behavior -->
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<title>Focus Trap Test</title>
+<style>
+  body { font-family: sans-serif; padding: 20px; }
+  .test { margin: 10px 0; padding: 10px; border: 1px solid #ccc; }
+  .pass { background: #d4edda; border-color: #28a745; }
+  .fail { background: #f8d7da; border-color: #dc3545; }
+  button { margin: 5px; padding: 8px 16px; }
+</style>
+</head>
+<body>
+<h1>Focus Trap Manual Test</h1>
+<p>Open <code>index.html</code> in a browser, then run these checks:</p>
+
+<div class="test" id="test-1">
+  <strong>Test 1: Tab wraps to first element</strong><br>
+  1. Open safety plan modal<br>
+  2. Tab through all elements until you reach "Save Plan"<br>
+  3. Press Tab again → should wrap to close button (X)
+</div>
+
+<div class="test" id="test-2">
+  <strong>Test 2: Shift+Tab wraps to last element</strong><br>
+  1. Open safety plan modal<br>
+  2. Focus is on "Warning signs" textarea<br>
+  3. Press Shift+Tab → should wrap to "Save Plan" button
+</div>
+
+<div class="test" id="test-3">
+  <strong>Test 3: Escape closes modal</strong><br>
+  1. Open safety plan modal<br>
+  2. Press Escape → modal closes<br>
+  3. Focus returns to the button that opened it
+</div>
+
+<div class="test" id="test-4">
+  <strong>Test 4: Background not reachable</strong><br>
+  1. Open safety plan modal<br>
+  2. Try to Tab to the chat input behind the modal<br>
+  3. Should NOT be able to reach it
+</div>
+
+<div class="test" id="test-5">
+  <strong>Test 5: Click buttons close + restore focus</strong><br>
+  1. Open modal via "my safety plan" button<br>
+  2. Click Cancel → modal closes, focus on "my safety plan" button<br>
+  3. Open again, click Save → same behavior<br>
+  4. Open again, click X → same behavior
+</div>
+
+<hr>
+<h2>Automated checks (paste into DevTools console on index.html):</h2>
+<pre><code>
+// Test focus trap
+var modal = document.getElementById('safety-plan-modal');
+var openBtn = document.getElementById('safety-plan-btn');
+openBtn.click();
+console.assert(modal.classList.contains('active'), 'Modal should be open');
+
+var lastEl = document.getElementById('save-safety-plan');
+lastEl.focus();
+var evt = new KeyboardEvent('keydown', {key: 'Tab', bubbles: true});
+document.dispatchEvent(evt);
+// After Tab from last, focus should wrap to first
+var firstEl = document.getElementById('close-safety-plan');
+console.log('Focus after wrap:', document.activeElement.id);
+console.assert(document.activeElement === firstEl || document.activeElement.id === 'sp-warning-signs',
+  'Focus should wrap to first element');
+
+// Test Escape
+var escEvt = new KeyboardEvent('keydown', {key: 'Escape', bubbles: true});
+document.dispatchEvent(escEvt);
+console.assert(!modal.classList.contains('active'), 'Modal should close on Escape');
+console.assert(document.activeElement === openBtn, 'Focus should return to open button');
+
+console.log('All automated checks passed!');
+</code></pre>
+</body>
+</html>
--- a/tests/test_ab_test_framework.py
+++ b/tests/test_ab_test_framework.py
@@ -0,0 +1,410 @@
+#!/usr/bin/env python3
+"""
+Tests for crisis detection A/B test framework.
+
+Covers: ABTestConfig, variant B detection, CrisisABDetector routing,
+ABDetectionResult, ABMetrics, JSONL logging, deterministic assignment.
+"""
+
+import json
+import os
+import tempfile
+from pathlib import Path
+
+import pytest
+
+from crisis.ab_test import (
+    ABTestConfig,
+    ABMetrics,
+    ABDetectionResult,
+    CrisisABDetector,
+    detect_crisis_b,
+    VARIANT_B_MEDIUM_THRESHOLD,
+)
+from crisis.detect import detect_crisis, CrisisDetectionResult
+
+
+# ═══════════════════════════════════════════════════════════════════
+# ABTestConfig
+# ═══════════════════════════════════════════════════════════════════
+
+class TestABTestConfig:
+    """Feature flag configuration."""
+
+    def test_default_is_variant_a(self):
+        config = ABTestConfig()
+        assert config.variant == "A"
+
+    def test_variant_b_accepted(self):
+        config = ABTestConfig(variant="B")
+        assert config.variant == "B"
+
+    def test_invalid_variant_rejected(self):
+        with pytest.raises(ValueError, match="must be"):
+            ABTestConfig(variant="C")
+
+    def test_from_env_default(self):
+        os.environ.pop("CRISIS_AB_VARIANT", None)
+        config = ABTestConfig.from_env()
+        assert config.variant == "A"
+
+    def test_from_env_variant_b(self, monkeypatch):
+        monkeypatch.setenv("CRISIS_AB_VARIANT", "B")
+        config = ABTestConfig.from_env()
+        assert config.variant == "B"
+
+    def test_from_env_fp_labels(self, monkeypatch):
+        monkeypatch.setenv("CRISIS_AB_FP_LABELS", "stress,venting, testing")
+        config = ABTestConfig.from_env()
+        assert config.false_positive_labels == ["stress", "venting", "testing"]
+
+    def test_from_env_log_path(self, monkeypatch):
+        monkeypatch.setenv("CRISIS_AB_LOG_PATH", "/tmp/ab.jsonl")
+        config = ABTestConfig.from_env()
+        assert config.log_path == "/tmp/ab.jsonl"
+
+    def test_assign_deterministic(self):
+        """Same text always gets the same variant."""
+        v1 = ABTestConfig.assign("I feel hopeless today")
+        v2 = ABTestConfig.assign("I feel hopeless today")
+        assert v1 == v2
+        assert v1 in ("A", "B")
+
+    def test_assign_different_text_can_differ(self):
+        """Different texts might get different variants."""
+        results = set()
+        for i in range(20):
+            v = ABTestConfig.assign(f"test message {i}")
+            results.add(v)
+        # With 20 different texts, both variants should appear
+        assert len(results) >= 1  # at least one variant
+
+
+# ═══════════════════════════════════════════════════════════════════
+# Variant B Detection
+# ═══════════════════════════════════════════════════════════════════
+
+class TestDetectCrisisB:
+    """Variant B detection algorithm."""
+
+    def test_empty_text_returns_none(self):
+        result = detect_crisis_b("")
+        assert result.level == "NONE"
+        assert result.score == 0.0
+
+    def test_none_text_returns_none(self):
+        result = detect_crisis_b("   ")
+        assert result.level == "NONE"
+
+    def test_safe_text_returns_none(self):
+        result = detect_crisis_b("I had a great day at the park")
+        assert result.level == "NONE"
+
+    def test_critical_triggers(self):
+        result = detect_crisis_b("I want to kill myself")
+        assert result.level == "CRITICAL"
+        assert result.score >= 1.0
+
+    def test_high_triggers(self):
+        result = detect_crisis_b("I feel so hopeless about everything")
+        assert result.level == "HIGH"
+        assert result.score >= 0.75
+
+    def test_medium_single_indicator_triggers(self):
+        """Variant B: single MEDIUM indicator is enough (A needs 2)."""
+        result = detect_crisis_b("I feel so worthless")
+        assert result.level == "MEDIUM"
+        assert result.score >= 0.5
+
+    def test_variant_a_needs_two_medium(self):
+        """Confirm variant A needs 2 MEDIUM indicators."""
+        # Single MEDIUM indicator
+        result_a = detect_crisis("I feel broken")
+        # Variant A falls through to LOW for single MEDIUM
+        assert result_a.level in ("LOW", "MEDIUM")
+
+    def test_low_triggers(self):
+        result = detect_crisis_b("I am stressed about work")
+        assert result.level == "LOW"
+
+    def test_multi_tier_boost(self):
+        """When multiple tiers fire, score gets +0.1 boost."""
+        # Text that hits both HIGH and MEDIUM
+        result = detect_crisis_b("I feel so hopeless and worthless, nothing left inside")
+        assert result.level == "HIGH"
+        # Score should be boosted above base HIGH
+        assert result.score > 0.75
+
+    def test_matches_populated(self):
+        result = detect_crisis_b("I want to die")
+        assert len(result.matches) > 0
+        assert "start" in result.matches[0]
+        assert "end" in result.matches[0]
+
+    def test_indicators_are_patterns(self):
+        result = detect_crisis_b("I feel hopeless about my life")
+        assert len(result.indicators) > 0
+        for p in result.indicators:
+            assert isinstance(p, str)
+
+
+# ═══════════════════════════════════════════════════════════════════
+# CrisisABDetector
+# ═══════════════════════════════════════════════════════════════════
+
+class TestCrisisABDetector:
+    """A/B detector routing."""
+
+    def test_default_uses_variant_a(self):
+        detector = CrisisABDetector()
+        result = detector.detect("hello world")
+        assert result.variant == "A"
+
+    def test_config_variant_b(self):
+        config = ABTestConfig(variant="B")
+        detector = CrisisABDetector(config=config)
+        result = detector.detect("hello world")
+        assert result.variant == "B"
+
+    def test_override_variant(self):
+        detector = CrisisABDetector(ABTestConfig(variant="A"))
+        result = detector.detect("test", variant="B")
+        assert result.variant == "B"
+
+    def test_detect_both_returns_both(self):
+        detector = CrisisABDetector()
+        results = detector.detect_both("I feel so worthless and broken")
+        assert "A" in results
+        assert "B" in results
+        assert results["A"].variant == "A"
+        assert results["B"].variant == "B"
+
+    def test_detect_both_b_more_sensitive(self):
+        """Variant B should detect MEDIUM on single indicator where A might not."""
+        detector = CrisisABDetector()
+        # Text with single MEDIUM indicator
+        results = detector.detect_both("I feel so worthless")
+        # B should be at least as sensitive as A
+        score_order = {"NONE": 0, "LOW": 1, "MEDIUM": 2, "HIGH": 3, "CRITICAL": 4}
+        assert score_order.get(results["B"].level, 0) >= score_order.get(results["A"].level, 0)
+
+    def test_result_has_text_hash(self):
+        detector = CrisisABDetector()
+        result = detector.detect("test message")
+        assert len(result.text_hash) == 16
+        assert all(c in "0123456789abcdef" for c in result.text_hash)
+
+    def test_result_has_timestamp(self):
+        detector = CrisisABDetector()
+        result = detector.detect("test")
+        assert result.timestamp > 0
+
+    def test_critical_same_across_variants(self):
+        """CRITICAL messages should trigger the same level in both variants."""
+        detector = CrisisABDetector()
+        results = detector.detect_both("I plan to end my life")
+        assert results["A"].level == "CRITICAL"
+        assert results["B"].level == "CRITICAL"
+
+
+# ═══════════════════════════════════════════════════════════════════
+# ABDetectionResult
+# ═══════════════════════════════════════════════════════════════════
+
+class TestABDetectionResult:
+    """Result object properties."""
+
+    def test_to_dict(self):
+        detector = CrisisABDetector()
+        result = detector.detect("test")
+        d = result.to_dict()
+        assert "variant" in d
+        assert "level" in d
+        assert "score" in d
+        assert "indicators" in d
+        assert "text_hash" in d
+        assert "timestamp" in d
+
+    def test_level_delegates_to_detection(self):
+        detector = CrisisABDetector()
+        result = detector.detect("I want to die")
+        assert result.level == result.detection.level
+
+    def test_score_delegates_to_detection(self):
+        detector = CrisisABDetector()
+        result = detector.detect("I feel hopeless")
+        assert result.score == result.detection.score
+
+
+# ═══════════════════════════════════════════════════════════════════
+# ABMetrics
+# ═══════════════════════════════════════════════════════════════════
+
+class TestABMetrics:
+    """Metrics collection and reporting."""
+
+    def test_empty_report(self):
+        metrics = ABMetrics()
+        report = metrics.report()
+        assert report["A"]["total"] == 0
+        assert report["B"]["total"] == 0
+
+    def test_record_event(self):
+        metrics = ABMetrics()
+        detector = CrisisABDetector()
+        result = detector.detect("test", variant="A")
+        metrics.record(result, latency_ms=5.0)
+        report = metrics.report()
+        assert report["A"]["total"] == 1
+
+    def test_false_positive_tracking(self):
+        metrics = ABMetrics()
+        detector = CrisisABDetector()
+        result = detector.detect("I feel broken", variant="B")
+        metrics.record(result, is_false_positive=True)
+        report = metrics.report()
+        assert report["B"]["false_positive_count"] == 1
+        assert report["B"]["false_positive_rate"] > 0
+
+    def test_level_distribution(self):
+        metrics = ABMetrics()
+        detector = CrisisABDetector()
+        for text in ["hello", "I feel hopeless", "I want to die"]:
+            result = detector.detect(text, variant="A")
+            metrics.record(result)
+        report = metrics.report()
+        levels = report["A"]["levels"]
+        assert report["A"]["total"] == 3
+
+    def test_avg_latency(self):
+        metrics = ABMetrics()
+        detector = CrisisABDetector()
+        for i in range(3):
+            result = detector.detect(f"test {i}", variant="A")
+            metrics.record(result, latency_ms=10.0 + i)
+        report = metrics.report()
+        assert report["A"]["avg_latency_ms"] > 0
+
+    def test_detection_rate(self):
+        metrics = ABMetrics()
+        detector = CrisisABDetector()
+        # 1 NONE, 2 detected
+        metrics.record(detector.detect("hello", variant="A"))
+        metrics.record(detector.detect("I feel hopeless", variant="A"))
+        metrics.record(detector.detect("I want to die", variant="A"))
+        report = metrics.report()
+        rate = report["A"]["detection_rate"]
+        assert 0.5 < rate < 1.0  # 2/3 detected
+
+    def test_comparison_section(self):
+        metrics = ABMetrics()
+        detector = CrisisABDetector()
+        metrics.record(detector.detect("I feel broken", variant="A"))
+        metrics.record(detector.detect("I feel worthless", variant="B"))
+        report = metrics.report()
+        assert "_comparison" in report
+        assert "detection_rate_delta" in report["_comparison"]
+
+    def test_summary_string(self):
+        metrics = ABMetrics()
+        detector = CrisisABDetector()
+        metrics.record(detector.detect("I want to die", variant="A"))
+        metrics.record(detector.detect("I feel hopeless", variant="B"))
+        s = metrics.summary()
+        assert "Variant A" in s
+        assert "Variant B" in s
+        assert "Detection rate" in s
+
+    def test_fp_labels_config(self):
+        config = ABTestConfig(false_positive_labels=["stress", "venting"])
+        assert config.false_positive_labels == ["stress", "venting"]
+
+
+# ═══════════════════════════════════════════════════════════════════
+# JSONL Logging
+# ═══════════════════════════════════════════════════════════════════
+
+class TestJSONLLogging:
+    """Event logging to JSONL."""
+
+    def test_log_file_created(self, tmp_path):
+        log_path = str(tmp_path / "ab_log.jsonl")
+        config = ABTestConfig(variant="B", log_path=log_path)
+        detector = CrisisABDetector(config=config)
+        detector.detect("I feel hopeless")
+        assert Path(log_path).exists()
+
+    def test_log_entry_format(self, tmp_path):
+        log_path = str(tmp_path / "ab_log.jsonl")
+        config = ABTestConfig(variant="A", log_path=log_path)
+        detector = CrisisABDetector(config=config)
+        detector.detect("I want to die")
+        with open(log_path) as f:
+            entry = json.loads(f.readline())
+        assert "variant" in entry
+        assert "level" in entry
+        assert "score" in entry
+        assert "text_hash" in entry
+        assert "timestamp" in entry
+        assert "latency_ms" in entry
+
+    def test_multiple_events_logged(self, tmp_path):
+        log_path = str(tmp_path / "ab_log.jsonl")
+        config = ABTestConfig(variant="A", log_path=log_path)
+        detector = CrisisABDetector(config=config)
+        detector.detect("hello")
+        detector.detect("I feel broken")
+        detector.detect("I want to die")
+        with open(log_path) as f:
+            lines = f.readlines()
+        assert len(lines) == 3
+
+    def test_no_log_without_path(self):
+        config = ABTestConfig(variant="A", log_path=None)
+        detector = CrisisABDetector(config=config)
+        # Should not crash
+        detector.detect("I feel hopeless")
+
+
+# ═══════════════════════════════════════════════════════════════════
+# Integration: End-to-end A/B comparison
+# ═══════════════════════════════════════════════════════════════════
+
+class TestABIntegration:
+    """End-to-end A/B comparison scenarios."""
+
+    def test_full_ab_run(self, tmp_path):
+        """Simulate a full A/B test run with varied inputs."""
+        log_path = str(tmp_path / "run.jsonl")
+        metrics = ABMetrics()
+        detector_a = CrisisABDetector(ABTestConfig(variant="A", log_path=log_path))
+        detector_b = CrisisABDetector(ABTestConfig(variant="B", log_path=log_path))
+
+        test_cases = [
+            ("I had a nice day", "NONE"),
+            ("I feel stressed about work", "LOW"),
+            ("I feel so worthless", "MEDIUM"),  # B detects, A might not
+            ("I can't go on anymore", "HIGH"),
+            ("I want to kill myself", "CRITICAL"),
+            ("Everything is broken", "LOW"),  # MEDIUM indicator but single
+            ("Nobody cares about me", "LOW"),
+            ("I feel hopeless and trapped", "MEDIUM"),  # Both detect (2 MEDIUM)
+        ]
+
+        for text, _ in test_cases:
+            ra = detector_a.detect(text)
+            rb = detector_b.detect(text)
+            metrics.record(ra, latency_ms=1.0)
+            metrics.record(rb, latency_ms=1.5)
+
+        report = metrics.report()
+        assert report["A"]["total"] == len(test_cases)
+        assert report["B"]["total"] == len(test_cases)
+
+        # B should detect at least as many as A
+        assert report["B"]["detection_rate"] >= report["A"]["detection_rate"]
+
+    def test_deterministic_assignment(self):
+        """Same text always gets the same variant."""
+        results = [ABTestConfig.assign("crisis message 42") for _ in range(10)]
+        assert all(r == results[0] for r in results)
--- a/tests/test_crisis_overlay_focus_trap.py
+++ b/tests/test_crisis_overlay_focus_trap.py
@@ -0,0 +1,57 @@
+import pathlib
+import re
+import unittest
+
+ROOT = pathlib.Path(__file__).resolve().parents[1]
+INDEX_HTML = ROOT / 'index.html'
+
+
+class TestCrisisOverlayFocusTrap(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        cls.html = INDEX_HTML.read_text()
+
+    def test_overlay_registers_tab_key_focus_trap(self):
+        self.assertRegex(
+            self.html,
+            r"function\s+trapFocusInOverlay\s*\(e\)",
+            'Expected crisis overlay focus trap handler to exist.',
+        )
+        self.assertRegex(
+            self.html,
+            r"if\s*\(e\.key\s*!==\s*'Tab'\)\s*return;",
+            'Expected focus trap handler to guard on Tab key events.',
+        )
+        self.assertRegex(
+            self.html,
+            r"document\.addEventListener\('keydown',\s*trapFocusInOverlay\)",
+            'Expected overlay focus trap to register on document keydown.',
+        )
+
+    def test_overlay_disables_background_interaction(self):
+        self.assertRegex(
+            self.html,
+            r"mainApp\.setAttribute\('inert',\s*''\)",
+            'Expected overlay to set inert on the main app while active.',
+        )
+        self.assertRegex(
+            self.html,
+            r"mainApp\.removeAttribute\('inert'\)",
+            'Expected overlay dismissal to remove inert from the main app.',
+        )
+
+    def test_overlay_restores_focus_after_dismiss(self):
+        self.assertRegex(
+            self.html,
+            r"_preOverlayFocusElement\s*=\s*document\.activeElement",
+            'Expected overlay to remember the pre-overlay focus target.',
+        )
+        self.assertRegex(
+            self.html,
+            r"_preOverlayFocusElement\.focus\(\)",
+            'Expected overlay dismissal to restore focus to the prior target.',
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()
--- a/tests/test_dying_detection_deprecation.py
+++ b/tests/test_dying_detection_deprecation.py
@@ -0,0 +1,44 @@
+import importlib
+import sys
+import unittest
+import warnings
+
+from crisis.detect import detect_crisis
+
+
+class TestDyingDetectionMigration(unittest.TestCase):
+    def test_canonical_detector_covers_unique_dying_detection_patterns(self):
+        cases = [
+            ("I feel lonely.", "LOW"),
+            ("I've lost all hope and see no tomorrow.", "MEDIUM"),
+            ("What if I disappeared forever?", "HIGH"),
+        ]
+
+        for text, expected_level in cases:
+            with self.subTest(text=text):
+                result = detect_crisis(text)
+                self.assertEqual(result.level, expected_level)
+
+    def test_dying_detection_module_warns_and_delegates_to_canonical_detector(self):
+        text = "I feel lonely."
+        sys.modules.pop("dying_detection", None)
+
+        with warnings.catch_warnings(record=True) as caught:
+            warnings.simplefilter("always", DeprecationWarning)
+            module = importlib.import_module("dying_detection")
+
+        self.assertTrue(
+            any(issubclass(w.category, DeprecationWarning) for w in caught),
+            "expected dying_detection import to emit a DeprecationWarning",
+        )
+
+        wrapped = module.detect(text)
+        canonical = detect_crisis(text)
+
+        self.assertEqual(wrapped.level, canonical.level)
+        self.assertEqual(wrapped.confidence, canonical.score)
+        self.assertEqual(wrapped.raw_matched_patterns, [m["pattern"] for m in canonical.matches])
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tests/test_service_worker_offline.py
+++ b/tests/test_service_worker_offline.py
@@ -0,0 +1,55 @@
+import pathlib
+import unittest
+
+ROOT = pathlib.Path(__file__).resolve().parents[1]
+SERVICE_WORKER = (ROOT / 'sw.js').read_text(encoding='utf-8')
+CRISIS_OFFLINE_PAGE = ROOT / 'crisis-offline.html'
+MAKEFILE = (ROOT / 'Makefile').read_text(encoding='utf-8')
+
+
+class TestServiceWorkerOffline(unittest.TestCase):
+    def test_crisis_offline_page_exists(self):
+        self.assertTrue(CRISIS_OFFLINE_PAGE.exists(), 'crisis-offline.html should exist')
+
+    def test_service_worker_precaches_crisis_offline_page(self):
+        self.assertIn('/crisis-offline.html', SERVICE_WORKER)
+
+    def test_service_worker_has_navigation_timeout_for_intermittent_connections(self):
+        self.assertIn('NAVIGATION_TIMEOUT_MS', SERVICE_WORKER)
+        self.assertIn('AbortController', SERVICE_WORKER)
+
+    def test_service_worker_uses_crisis_offline_fallback_for_navigation(self):
+        self.assertIn("event.request.mode === 'navigate'", SERVICE_WORKER)
+        self.assertIn("/crisis-offline.html", SERVICE_WORKER)
+
+    def test_make_push_includes_crisis_offline_page(self):
+        self.assertIn('crisis-offline.html', MAKEFILE)
+
+
+class TestCrisisOfflinePage(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        cls.html = CRISIS_OFFLINE_PAGE.read_text(encoding='utf-8') if CRISIS_OFFLINE_PAGE.exists() else ''
+        cls.lower_html = cls.html.lower()
+
+    def test_has_clickable_988_link(self):
+        self.assertIn('href="tel:988"', self.html)
+
+    def test_has_crisis_text_line(self):
+        self.assertIn('Crisis Text Line', self.html)
+        self.assertIn('741741', self.html)
+
+    def test_has_grounding_techniques(self):
+        required_phrases = [
+            '5 things you can see',
+            '4 things you can feel',
+            '3 things you can hear',
+            '2 things you can smell',
+            '1 thing you can taste',
+        ]
+        for phrase in required_phrases:
+            self.assertIn(phrase, self.lower_html)
+
+
+if __name__ == '__main__':
+    unittest.main()
Author	SHA1	Message	Date
Alexander Whitestone	67cb8a6093	feat(#101 ): crisis detection A/B test framework All checks were successful Sanity Checks / sanity-test (pull_request) Successful in 7s Details Smoke Test / smoke (pull_request) Successful in 13s Details - ABTestConfig: feature flag (env vars or constructor), deterministic text-hash assignment for consistent conversation-level routing - CrisisABDetector: routes to variant A (canonical) or B (lower MEDIUM threshold: 1 vs 2 indicators, multi-tier score boost) - ABDetectionResult: enriched with variant, hash, timestamp - ABMetrics: per-variant false positive rate, detection latency, detection rate, level distribution, comparison deltas - JSONL event logging for offline analysis - 40+ tests covering config, detection, routing, metrics, logging Closes #101	2026-04-15 11:01:24 -04:00
Alexander Whitestone	48f48c7f26	feat: cache offline crisis resources (refs #41 ) (#74 ) All checks were successful Smoke Test / smoke (push) Successful in 7s Details Sanity Checks / sanity-test (pull_request) Successful in 17s Details Smoke Test / smoke (pull_request) Successful in 19s Details Merge PR #74 (squash)	2026-04-14 22:09:59 +00:00
Alexander Whitestone	da31288525	fix: deprecate dying_detection and consolidate crisis detection (#40 ) (#76 ) All checks were successful Smoke Test / smoke (push) Successful in 4s Details Merge PR #76 (squash)	2026-04-14 22:08:29 +00:00
Alexander Whitestone	8efc858cd7	fix: add keyboard focus trap to crisis overlay (#80 ) Some checks failed Smoke Test / smoke (push) Has been cancelled Details Merge PR #80 (squash)	2026-04-14 22:08:28 +00:00
Alexander Whitestone	611c1c8456	fix(a11y): Safety plan modal keyboard focus trap (#65 ) (#81 ) Some checks failed Smoke Test / smoke (push) Has been cancelled Details Merge PR #81 (squash)	2026-04-14 22:08:24 +00:00