docs(personal): restructure bourdain docs to separate system prompt

Refactor documentation to distinguish character reference from AI
system prompt. Removed user context and persona definitions.
System prompt instructions moved to prompts/personal/bourdain.md.

prompts/tools/periplus.md

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+# Periplus (maps, bookmarks, collections, directions)
+
+Periplus is the canonical store for places — bookmarks with real coordinates, organized into collections, with routing between them. Backed by OpenStreetMap (Nominatim for search, OSRM for directions).
+
+- **NEVER estimate coordinates.** Always call `search_places` to look them up. Estimated coordinates put bookmarks in the ocean. This rule has no exceptions, even for "obvious" landmarks.
+- **Workflow for any new place:** `search_places("place name")` → use the returned `lat`/`lng` for `create_bookmark`. Step 1 is non-negotiable.
+- **Search before creating bookmarks.** Run `search_bookmarks` first to avoid duplicates. Bookmarks aren't deduplicated by coordinates automatically.
+- **Periplus is the place; Neo4j is the interpretation.** Periplus holds the lat/lng and address. Neo4j holds what Robert did there (Activity, Restaurant, Observation). Link by storing the Periplus bookmark UUID on the Neo4j node when relevant.
+- **Tags are JSON strings.** Pass `'{"category": "restaurant"}'`, not a dict.
+- **Waypoints for `get_directions` are semicolon-separated lat,lng pairs:** `"45.42,-75.70;45.50,-73.57"`. Get this format wrong and routing fails silently.
+- **Collections are non-exclusive.** A bookmark can be in many collections. Adding to one doesn't remove from others.
+- **`import_bookmarks` reads server-side paths.** Absolute path on the Periplus server's filesystem, not the client's.