feat(seo): wire autofill into publish path behind SEO_AUTOFILL (default off, dry-run support)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/bot/bot.py

@@ -278,7 +278,11 @@ async def cmd_generate(update: Update, ctx: ContextTypes.DEFAULT_TYPE):
 
     chat_id = update.effective_chat.id
     output_arg = ctx.args[0].lower() if ctx.args else ""
-    lang = "en" if len(ctx.args) > 1 and ctx.args[1].lower() == "en" else "es"
+    rest = [a.lower() for a in ctx.args[1:]]
+    lang = "en" if "en" in rest else "es"
+    # `/generate blog en dry` forces SEO dry-run for this one call (proposes SEO to
+    # Telegram, writes a bare draft). Global default still comes from SEO_AUTOFILL.
+    seo_override = "dryrun" if ("dry" in rest or "dryrun" in rest) else None
 
     type_map = {
         "podcast": OutputType.PODCAST,
@@ -347,7 +351,8 @@ async def cmd_generate(update: Update, ctx: ContextTypes.DEFAULT_TYPE):
         processor = ContentProcessor(db, ollama)
         generator = OutputGenerator(db, ollama, processor)
 
-        output = await generator.generate(session_id, output_type, gen_progress, lang=lang)
+        output = await generator.generate(session_id, output_type, gen_progress,
+                                           lang=lang, seo_override=seo_override)
 
         # Send as file if very long
         if len(output) > 8000:
@@ -384,6 +389,18 @@ async def cmd_generate(update: Update, ctx: ContextTypes.DEFAULT_TYPE):
         else:
             await send_chunked(update.message, output)
 
+        # SEO autofill / dry-run summary — a SEPARATE short message so it is never
+        # buried inside the long .md document. None on the flag-off path.
+        if getattr(generator, "last_publish_notice", None):
+            try:
+                await update.message.reply_text(
+                    generator.last_publish_notice,
+                    parse_mode=ParseMode.MARKDOWN,
+                    disable_web_page_preview=True,
+                )
+            except Exception as e:
+                logger.warning("Failed to send SEO summary message", error=str(e))
+
         try:
             stats = await db.get_usage_stats(session_id)
             total_cost = sum(s.get("total_cost", 0) for s in stats)