fix(ai-moderation): implement prompt analysis recommendations

- Expand IMPHNEN domain rule to cover wildcard (*.imphnen.*)
- Trim redundant SARA examples from TEXT_ONLY_MODE (save ~950 tokens)
- Add debugging logs for channel culture injection into prompt
- Sync flag validation set with missing flags: potential_evasion, unclear_context

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

package.json

@@ -18,6 +18,7 @@
     "db:generate": "drizzle-kit generate",
     "db:migrate": "drizzle-kit migrate",
     "db:studio": "drizzle-kit studio",
+    "db:truncate": "psql \"$DATABASE_URL\" -f scripts/truncate-all.sql",
     "install:yt-dlp": "sh scripts/install-yt-dlp.sh"
   },
   "devDependencies": {

scripts/truncate-all.sql

@@ -0,0 +1,22 @@
+-- Truncate all tables in correct order (respecting FK dependencies)
+-- attachments FK → messages (CASCADE), others are independent
+-- Use CASCADE to handle any remaining FK chains automatically
+
+TRUNCATE TABLE
+  messages,
+  attachments,
+  ui_state,
+  ai_analysis_runs,
+  voice_recordings,
+  user_reputations,
+  channel_cultures,
+  message_reviews,
+  moderation_actions,
+  retention_policies,
+  text_analysis_cache,
+  sticker_cache,
+  corrected_moderations,
+  user_profiles,
+  mascot_chat_messages,
+  muxer_jobs
+CASCADE;

services/discord-gateway/src/modules/ai-moderation/llmClient.ts

@@ -298,6 +298,8 @@ const VALID_PRIMARY_AI_FLAGS = new Set([
   "self_promo",
   "conflict_instigation",
   "offensive_username",
+  "potential_evasion",
+  "unclear_context",
 ]);
 
 function normalizeFlag(value: string): string | null {

services/discord-gateway/src/modules/ai-moderation/llmModerationClient.ts

@@ -756,6 +756,11 @@ async function runTextOnlyBatch(
     ? channelCultureObj.culture_summary
     : undefined;
 
+  // Log channel culture & user profiles for debugging
+  if (channelCulture) {
+    log.debug({ channelId, culturePreview: channelCulture.slice(0, 120) }, "Injected channel culture into prompt");
+  }
+
   // Run sub-batches sequentially to avoid rate limits
   for (let i = 0; i < subBatches.length; i++) {
     const batch = subBatches[i];
@@ -1092,6 +1097,11 @@ async function runMediaBatch(
     ? channelCultureObj.culture_summary
     : undefined;
 
+  // Log channel culture for debugging
+  if (channelCulture) {
+    log.debug({ channelId, culturePreview: channelCulture.slice(0, 120) }, "Injected channel culture into prompt (media path)");
+  }
+
   const correctedExamples = await buildCorrectedFewShotExamples();
   const systemText = buildSystemPromptModular({
     contextText,