fix(notion-search): correct --filter example syntax in docs

Final review caught that both --filter example locations used simplified
JSON ({"Status": "Done"}) that Notion's data_sources.query API rejects
with a 400. The script passes --filter verbatim, so users copy-pasting
the example would hit a confusing error.

Replace with Notion's actual filter shape:
  {"property": "Status", "status": {"equals": "Done"}}

Also added a compound (and/or) example in CLAUDE.md so users have a
reference for combining filters.

30/30 tests still pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

custom-skills/31-notion-organizer/commands/notion-search.md

@@ -19,7 +19,7 @@ python3 notion_search.py "$ARGUMENTS"
 - **Default browse mode** (terminal table): `notion-search "AI agents in 2026"`
 - **JSON for piping** (e.g. into the future notion-to-notebooklm push skill): `notion-search "AI agents" --json | jq '.[].id'`
 - **Constrain to specific databases**: `notion-search "MCP" --databases f8f19ede-32bd-43ac-9f60-0651f6f40afe`
-- **Property filter** (per-database mode): `notion-search "MCP" --databases ID --filter '{"Status": "Done"}'`
+- **Property filter** (per-database mode, Notion's native filter shape): `notion-search "MCP" --databases ID --filter '{"property": "Status", "status": {"equals": "Done"}}'`
 - **Fast mode (no LLM)**: `notion-search "exact phrase" --no-rerank --no-expand`
 
 ## Requirements