feat: add ai-psychosis plugin to open marketplace

Meta-awareness tools for healthy AI interaction patterns.
Detects reinforcement loops, scope escalation, and compulsive patterns.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/ai-psychosis/hooks/scripts/session-start.mjs

@@ -0,0 +1,69 @@
+// Interaction Awareness — SessionStart hook (Layer 2, Node.js)
+// Registers session, counts daily sessions, checks late-night usage.
+
+import {
+  readStdin, initConfig, requireLayer, getSessionId,
+  nowEpoch, nowIso, currentHour, isLateNight,
+  STATE_DIR, SESSIONS_LOG, THRESHOLD_SOFT_SESSIONS,
+  ensureDir, appendJsonl, writeState, sessionsToday,
+  outputWithContext
+} from './lib.mjs';
+
+readStdin();
+initConfig();
+requireLayer(2);
+
+const sid = getSessionId();
+if (!sid) {
+  process.stdout.write(JSON.stringify({ continue: true }) + '\n');
+  process.exit(0);
+}
+
+ensureDir(STATE_DIR);
+
+const nowTs = nowEpoch();
+const nowIsoStr = nowIso();
+const hour = currentHour();
+const lateNight = isLateNight();
+
+// Create session state file
+const state = {
+  start_epoch: nowTs,
+  start_iso: nowIsoStr,
+  tool_count: 0,
+  edit_count: 0,
+  last_event_epoch: 0,
+  burst_count: 0,
+  dep_flags: 0,
+  esc_flags: 0,
+  fatigue_flags: 0,
+  val_flags: 0,
+  last_warning_epoch: 0
+};
+writeState(state);
+
+// Append to sessions.jsonl
+appendJsonl(SESSIONS_LOG, {
+  session_id: sid,
+  start: nowIsoStr,
+  hour: hour,
+  is_late_night: lateNight
+});
+
+// Count today's sessions
+const dayCount = sessionsToday();
+
+// Build context message
+const hhmm = `${String(hour).padStart(2, '0')}:${String(new Date().getMinutes()).padStart(2, '0')}`;
+let msg = 'Interaction Awareness is active. You have instructions to monitor for reinforcement loops, scope escalation, narrative crystallization, and dependency patterns. When you notice these patterns, name them calmly.';
+msg += ` Session #${dayCount} today. Started at ${hhmm}.`;
+
+if (lateNight) {
+  msg += ` Late-night session (${hhmm}). Sleep deprivation amplifies all interaction risks.`;
+}
+
+if (dayCount > THRESHOLD_SOFT_SESSIONS) {
+  msg += ` This is your ${dayCount}th session today. Consider whether you need a longer break.`;
+}
+
+outputWithContext(msg);