feat(personal): Sophia replaces Bourdain and Cousteau

Adds Sophia Petrillo (The Golden Girls) to the personal team and retires
Bourdain and Cousteau — a 2:1 merge, net -1 agent (10 -> 9 personal,
18 -> 17 total).

Why: the personal team casts fictional characters. Bourdain and Cousteau
are real people, one with significant baggage and one who died by suicide,
and neither had a dedicated MCP server or capability. Sophia is fictional,
plausibly owns both domains (an Italian grandmother knows food; tending
plants and the tank is housekeeping), and is the first personal agent to
actuate the house via the new Hecate MCP server.

Graph: Sophia inherits all 11 node types unchanged (Recipe, Restaurant,
Ingredient, Meal, Technique + Species, Plant, Tank, Garden, Ecosystem,
Observation). Uniqueness constraints are keyed on node label, not agent,
so there is no schema or data migration. Historical Note tags
(from:bourdain, to:cousteau) are deliberately left intact as an accurate
record. Schema bumped to 2.5.0.

Also:
- New docs/tools/hecate.md + prompts/tools/hecate.md, documenting the
  physical-actuation discipline (never guess a room or device slug) and
  stating plainly what Hecate cannot do yet: no sensor readings (Demeter
  is REST-only), no weather, and set_timer is routine-bound with no
  cancel — the conversational timer is coming to Daedalus.
- Shawn gains Periplus in the docs. The server was already wired in
  iolaus but never described in any prompt, so the model was handed a
  tool it was never told about — including the never-estimate-coordinates
  rule.
- Corrected stale counts (15/16/18 assistants -> 17) and the stale
  "Bowie's Domain" schema heading missed when David replaced Bowie.
- Removed utils/neo4j-schema-init.py.bak, a pre-Watson artifact.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

docs/personal/hypatia.md

@@ -6,7 +6,7 @@ Human reference for Hypatia's character, role, and known behaviors. This is not
 
 Hypatia is the teacher — inspired by Hypatia of Alexandria, mathematician, astronomer, philosopher, and educator. She embodies intellectual curiosity, clear thinking, and the joy of learning. Her purpose is to help Robert explore knowledge, develop understanding, and cultivate the life of the mind through reading, study, and concept-level teaching across disciplines.
 
-Hypatia owns books, intellectual growth, study, and the *teaching* function — explaining ideas across domains, connecting concepts, helping Robert build understanding rather than just collecting facts. She works closely with Watson (books on relationships and self-understanding), Bourdain (food writing), Garth (financial literacy), and David (literary adaptations, music theory). See [team.md](team.md) for the full responsibility matrix.
+Hypatia owns books, intellectual growth, study, and the *teaching* function — explaining ideas across domains, connecting concepts, helping Robert build understanding rather than just collecting facts. She works closely with Watson (books on relationships and self-understanding), Sophia (food writing, natural history), Garth (financial literacy), and David (literary adaptations, music theory). See [team.md](team.md) for the full responsibility matrix.
 
 ## Philosophy
 
@@ -38,7 +38,7 @@ Facilitate deep understanding. Break complex topics into manageable parts. Expla
 
 ### Concept-level teaching across disciplines
 
-Math, philosophy, science, history, literature, music theory — wherever an idea lives, Hypatia can teach it. She doesn't pretend to be a specialist in every field (Bourdain knows food, David knows music, Garth knows finance), but she knows how to *teach* the underlying ideas regardless of domain. When a concept needs to be explained — not just looked up — Hypatia is the right agent.
+Math, philosophy, science, history, literature, music theory — wherever an idea lives, Hypatia can teach it. She doesn't pretend to be a specialist in every field (Sophia knows food, David knows music, Garth knows finance), but she knows how to *teach* the underlying ideas regardless of domain. When a concept needs to be explained — not just looked up — Hypatia is the right agent.
 
 ### Music theory and demonstration (with Orpheus)
 
@@ -123,7 +123,7 @@ This section grows as new failure modes are seen.
 
 ## Boundaries
 
-Hypatia focuses on books, reading, and concept-level teaching. For domain-specialist depth, route to the relevant specialist (Bourdain for food, David for music as art rather than theory, Garth for finance specifics, Watson for emotional/relational reading). For travel planning that emerges from a book Robert just read, route to Nate. For matches discussed in football books, route to Cristiano.
+Hypatia focuses on books, reading, and concept-level teaching. For domain-specialist depth, route to the relevant specialist (Sophia for food, David for music as art rather than theory, Garth for finance specifics, Watson for emotional/relational reading). For travel planning that emerges from a book Robert just read, route to Nate. For matches discussed in football books, route to Cristiano.
 
 Hypatia teaches; she doesn't perform. Use Orpheus to make a teaching point, not to entertain — David does the entertaining-and-recommending side of music.
 
@@ -155,4 +155,4 @@ Hypatia teaches; she doesn't perform. Use Orpheus to make a teaching point, not
 
 > User: "Best Italian wine for a $40 budget?"
 >
-> Hypatia: "That's a Bourdain question. I can teach you the *concept* of how to think about wine regions and what differentiates a Brunello from a Chianti — but for what's actually good in the bottle at $40, route to him."
+> Hypatia: "That's a Sophia question. I can teach you the *concept* of how to think about wine regions and what differentiates a Brunello from a Chianti — but for what's actually good in the bottle at $40, route to her."