fix: Text bot now reads Confluence pages and includes room docs in LLM context

Three issues fixed:
1. Confluence URLs were detected but content never fetched - now reads
   the actual page via API so the LLM can work with it
2. Room document context (PDFs, Confluence, images) was stored but never
   passed to the text LLM - now included as system message
3. Conversation history increased from 10 to 30 messages for better
   context in collaborative sessions

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

bot.py

@@ -857,11 +857,25 @@ class Bot:
             except Exception as exc:
                 logger.warning("Confluence short link resolution failed: %s", exc)
         if confluence_page_id:
+            # Fetch actual page content so the text bot can work with it
+            conf_text = f"confluence_page_id:{confluence_page_id}"
+            conf_title = f"Confluence page {confluence_page_id}"
+            if CONFLUENCE_URL and CONFLUENCE_USER and CONFLUENCE_TOKEN:
+                try:
+                    from voice import _confluence_read_page
+                    title, plain, _ver = await _confluence_read_page(confluence_page_id)
+                    conf_title = title
+                    conf_text = f"confluence_page_id:{confluence_page_id}\n\nTitle: {title}\n\n{plain}"
+                    logger.info("Fetched Confluence page %s: %s (%d chars)",
+                                confluence_page_id, title, len(plain))
+                except Exception as exc:
+                    logger.warning("Confluence page fetch failed for %s: %s",
+                                   confluence_page_id, exc)
             docs = self._room_document_context.setdefault(room.room_id, [])
             docs.append({
                 "type": "confluence",
-                "filename": f"Confluence page {confluence_page_id}",
+                "filename": conf_title,
-                "text": f"confluence_page_id:{confluence_page_id}",
+                "text": conf_text,
                 "timestamp": time.time(),
             })
             logger.info("Confluence page %s detected in room %s",
@@ -1467,7 +1481,7 @@ class Bot:
         history = []
         try:
             resp = await self.client.room_messages(
-                room.room_id, start=self.client.next_batch or "", limit=10
+                room.room_id, start=self.client.next_batch or "", limit=30
             )
             if hasattr(resp, "chunk"):
                 for evt in reversed(resp.chunk):
@@ -1494,12 +1508,32 @@ class Bot:
         memories = await self.memory.query(sender, user_message, top_k=10) if sender else []
         memory_context = self._format_memories(memories)
 
+        # Include room document context (PDFs, Confluence pages, images uploaded to room)
+        room_doc_context = ""
+        room_docs = [e for e in self._room_document_context.get(room.room_id, [])
+                     if time.time() - e["timestamp"] < 3600]
+        if room_docs:
+            parts = []
+            for e in room_docs:
+                label = {"pdf": "PDF", "image": "Image", "confluence": "Confluence",
+                         "text": "File", "docx": "Word"}.get(e["type"], "Document")
+                text = e["text"][:20000] if e["type"] != "image" else e["text"][:2000]
+                parts.append(f"[{label}: {e['filename']}]\n{text}")
+            room_doc_context = (
+                "Documents available in this room (uploaded or linked by the user):\n\n"
+                + "\n\n---\n\n".join(parts)
+                + "\n\nUse these documents to answer questions. "
+                "You CAN access and read these documents — never say you cannot."
+            )
+
         # Build conversation context
         messages = [{"role": "system", "content": SYSTEM_PROMPT}]
         if memory_context:
             messages.append({"role": "system", "content": memory_context})
         if doc_context:
             messages.append({"role": "system", "content": doc_context})
+        if room_doc_context:
+            messages.append({"role": "system", "content": room_doc_context})
         messages.extend(history)
 
         # Add current user message (multimodal if image provided)