feat: RSO observation system, child safety, Discord adapter, Telegram watchdog, email attachments

Core agent improvements:
- RSO (Relevance Scoring & Observation) system: interaction_logger, memory_scorer, signal_detector
- Memory access logging (memory_access_log table) for relevance scoring; high-signal turn detection
- Rich conversation storage for notable turns; compact_conversation truncates long user messages
- Task-type classifier (query/action/analysis/creative) for observation tagging
- Nested sub-agent visibility: deep delegations now register against the main agent's manager

Child safety (Gabriel profile):
- child_safety.py: filtering, audit logging, prompt constants for restricted sessions
- .kiro/specs/child-safety-profile: requirements, design, tasks specs
- GABRIEL_BOT_PROPOSAL.md: initial proposal doc
- Reduced context window (10 msgs) and tutor-mode identity for restricted users

Telegram adapter:
- Polling watchdog: auto-restarts updater if polling drops unexpectedly
- get_me() with exponential-backoff retry on NetworkError at startup
- Correct stop() ordering: signal watchdog before cancelling tasks

Email / Gmail:
- send_email: supports file attachments (attachments list param)
- get_email: surfaces attachment metadata in response

Scheduled tasks / weather:
- Remove OpenWeatherMap API calls from morning-weather task; use wttr.in exclusively
- New scheduled tasks and scheduler state persistence

Discord:
- adapters/discord/__init__.py scaffold
- discord-plugin: MCP plugin for Claude Code Discord integration (server.ts, skills, config)

Infrastructure:
- n8n workflow exports (garvis_webhook, content_pipeline variants)
- memory_workspace: context, homelab-repo-updates, weekly observation summaries, error logs
- UCS C240 migration plan doc
- requirements.txt: new deps
- .claude/settings.json, fix_hooks.py: hook/permission tuning

google_tools/utils.py

@@ -1,10 +1,14 @@
 """Utility functions for Gmail/Calendar tools."""
 
 import base64
+import mimetypes
 import re
+from email.mime.base import MIMEBase
 from email.mime.multipart import MIMEMultipart
 from email.mime.text import MIMEText
+from email import encoders
 from html.parser import HTMLParser
+from pathlib import Path
 from typing import Dict, List, Optional
 
 
@@ -59,6 +63,7 @@ def create_mime_message(
     from_email: str = "me",
     cc: Optional[List[str]] = None,
     reply_to_message_id: Optional[str] = None,
+    attachments: Optional[List[str]] = None,
 ) -> Dict:
     """Create a MIME message for Gmail API.
 
@@ -69,11 +74,22 @@ def create_mime_message(
         from_email: Sender email (default: "me")
         cc: Optional list of CC recipients
         reply_to_message_id: Optional message ID to reply to
+        attachments: Optional list of file paths to attach
 
     Returns:
         Dict with 'raw' key containing base64url-encoded message
     """
-    message = MIMEMultipart("alternative")
+    is_html = bool(re.search(r"<[a-z][\s\S]*>", body, re.IGNORECASE))
+
+    # Build the body part first
+    if attachments:
+        # mixed wraps body alternative + file parts
+        message = MIMEMultipart("mixed")
+        body_part = MIMEMultipart("alternative")
+    else:
+        message = MIMEMultipart("alternative")
+        body_part = message
+
     message["To"] = to
     message["From"] = from_email
     message["Subject"] = subject
@@ -85,21 +101,25 @@ def create_mime_message(
         message["In-Reply-To"] = reply_to_message_id
         message["References"] = reply_to_message_id
 
-    # Try to detect if body is HTML
-    is_html = bool(re.search(r"<[a-z][\s\S]*>", body, re.IGNORECASE))
-
     if is_html:
-        # Add both plain text and HTML versions
-        text_part = MIMEText(html_to_text(body), "plain")
-        html_part = MIMEText(body, "html")
-        message.attach(text_part)
-        message.attach(html_part)
+        body_part.attach(MIMEText(html_to_text(body), "plain"))
+        body_part.attach(MIMEText(body, "html"))
     else:
-        # Plain text only
-        text_part = MIMEText(body, "plain")
-        message.attach(text_part)
+        body_part.attach(MIMEText(body, "plain"))
+
+    if attachments:
+        message.attach(body_part)
+        for file_path in attachments:
+            path = Path(file_path)
+            mime_type, _ = mimetypes.guess_type(str(path))
+            main_type, sub_type = (mime_type or "application/octet-stream").split("/", 1)
+            with open(path, "rb") as f:
+                part = MIMEBase(main_type, sub_type)
+                part.set_payload(f.read())
+            encoders.encode_base64(part)
+            part.add_header("Content-Disposition", "attachment", filename=path.name)
+            message.attach(part)
 
-    # Encode as base64url
     raw_message = base64.urlsafe_b64encode(message.as_bytes()).decode()
     return {"raw": raw_message}