docs(gmail): Add search tips and common gotchas to SKILL.md

Learned from real usage session where email search was inefficient:
- Document that `to:` only matches To header, not CC
- Warn that `list` message_id is the latest in thread (may not be user's)
- Add strategy for finding specific person's emails using thread view
- Bump version to 1.1.0

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

Author: omriariav

skills/gmail/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: gws-gmail
-version: 1.0.0
+version: 1.1.0
 description: "Google Gmail CLI operations via gws. Use when users need to list emails, read messages, send email, manage labels, archive, or trash messages. Triggers: gmail, email, inbox, send email, mail, labels, archive, trash."
 metadata:
   short-description: Google Gmail CLI operations
@@ -165,6 +165,9 @@ gws gmail list --format text    # Human-readable text
 
 ## Tips for AI Agents
 
+- `list` returns the latest `message_id` per thread — reading it may show someone else's reply. To find a specific person's message, use `gws gmail thread <thread-id>` and scan all messages
+- When searching for emails involving a person, use the bare email as a search term (`from:me user@domain.com`) rather than `to:user@domain.com` — the `to:` operator only matches the To header, not CC recipients
+- If using employee lookup tools to get someone's email, use the exact returned address — don't guess the format (e.g., `lior.g@` not `lior.golan@`)
 - Always use `--format json` (the default) for programmatic parsing
 - Use `gws gmail list` to get IDs: `message_id` for `read`/`label`/`archive`/`trash`, `thread_id` for `thread`
 - Use `gws gmail thread <thread-id>` to view full conversations with all messages