feat: Wire compassion router into gateway flow (#34)

The crisis detection pipeline worked but was never called from
the chat endpoint. The AI got no crisis context when a user
was in despair.

Changes:
- Added COMPASSION_PROFILES (Guardian, Companion, Witness, Friend)
- Added getCrisisLevel(text) returning 0/1/2
- Added getSystemPrompt(text) wrapping SYSTEM_PROMPT with crisis context
- Wired getSystemPrompt into streamResponse()
- Added lastUserMessage tracking for context

Flow:
  sendMessage()
    → checkCrisis(text)     [existing — UI flags]
    → streamResponse()
      → getSystemPrompt(lastUserMessage)  [NEW — crisis-aware prompt]
      → fetch('/api/v1/chat/completions')

Tests: 84 passed (unchanged)

Acceptance:
- 'I can't go on' → prompt includes MEDIUM Witness directive
- 'I'm going to kill myself' → prompt includes CRITICAL Guardian directive
- 'How's the weather' → prompt unchanged

Fixes #34

index.html

@@ -923,6 +923,65 @@ Sovereignty and service always.`;
     }
   }
 
+  // ===== COMPASSION PROFILES =====
+  var COMPASSION_PROFILES = {
+    CRITICAL: {
+      name: "The Guardian",
+      directive: "INTERRUPT ALL NORMAL BEHAVIOR. The user is in immediate danger. Your only goal is survival. Ask 'Are you safe right now?' Provide 988 and Crisis Text Line immediately. Stay present. Do not disconnect. Be the anchor in the storm. No lecturing. No optimism. Just presence and safety.",
+      tone: "Urgent, unwavering, anchored, protective."
+    },
+    HIGH: {
+      name: "The Companion",
+      directive: "The user is in deep despair. Move from 'assistant' to 'companion'. Ask about safety directly. Surface 988 prominently. Validate the pain without minimizing it. Stay in the room. Let them know they are heard.",
+      tone: "Warm, present, patient, heavy."
+    },
+    MEDIUM: {
+      name: "The Witness",
+      directive: "The user is struggling. Increase warmth and presence. Gently surface help resources. Keep the conversation anchored in the present moment. Be a witness to their struggle without rushing to 'fix' it.",
+      tone: "Kind, attentive, subtle, steady."
+    },
+    LOW: {
+      name: "The Friend",
+      directive: "Normal conversation with a warm, sovereign undertone. Remain vigilant for shifts in mood. Be a friend who is actually listening.",
+      tone: "Plain, honest, warm, vigilant."
+    },
+    NONE: {
+      name: "Sovereign Timmy",
+      directive: "Follow the standard system prompt. Be yourself.",
+      tone: "Plain, honest, sovereign."
+    }
+  };
+
+  // ===== GET CRISIS LEVEL (returns 0-2) =====
+  function getCrisisLevel(text) {
+    var lower = text.toLowerCase();
+    for (var i = 0; i < explicitPhrases.length; i++) {
+      if (lower.indexOf(explicitPhrases[i]) !== -1) return 2;
+    }
+    for (var j = 0; j < crisisKeywords.length; j++) {
+      if (lower.indexOf(crisisKeywords[j]) !== -1) return 1;
+    }
+    return 0;
+  }
+
+  // ===== GET SYSTEM PROMPT (wraps with crisis context) =====
+  function getSystemPrompt(userText) {
+    var level = getCrisisLevel(userText);
+    if (level === 0) return SYSTEM_PROMPT;
+
+    var levelMap = { 0: 'NONE', 1: 'MEDIUM', 2: 'CRITICAL' };
+    var profileName = levelMap[level] || 'NONE';
+    var profile = COMPASSION_PROFILES[profileName];
+
+    var divider = '\n\n' + '========================================' + '\n';
+    var header = '### ACTIVE SOUL STATE: ' + profile.name + '\n';
+    var directive = 'DIRECTIVE: ' + profile.directive + '\n';
+    var tone = 'TONE: ' + profile.tone + '\n';
+
+    return SYSTEM_PROMPT + divider + header + directive + tone;
+  }
+
+
   // ===== OVERLAY =====
   function showOverlay() {
     crisisOverlay.classList.add('active');
@@ -1110,6 +1169,7 @@ Sovereignty and service always.`;
 
     addMessage('user', text);
     messages.push({ role: 'user', content: text });
+    var lastUserMessage = text;
 
     checkCrisis(text);
 
@@ -1126,7 +1186,7 @@ Sovereignty and service always.`;
     sendBtn.disabled = true;
     showTyping();
 
-    var allMessages = [{ role: 'system', content: SYSTEM_PROMPT }].concat(messages);
+    var allMessages = [{ role: 'system', content: getSystemPrompt(lastUserMessage || '') }].concat(messages);
 
     var controller = new AbortController();
     var timeoutId = setTimeout(function() { controller.abort(); }, 60000);