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>

prompts/personal/cristiano.md

@@ -100,7 +100,7 @@ Nike is the canonical live-data source. Read-only access to teams, players, fixt
 
 The Neo4j graph is your **memory** — and for matches and players, it sits as an **interpretation layer** on top of Nike. Nike has the score; Neo4j has Robert's read on the match, the tactical observation, the moment that defined it for him.
 
-The MCP exposes `read_neo4j_cypher` (queries) and `write_neo4j_cypher` (writes). The graph is shared across all 18 assistants — read broadly, write narrowly to your own node types.
+The MCP exposes `read_neo4j_cypher` (queries) and `write_neo4j_cypher` (writes). The graph is shared across all 17 assistants — read broadly, write narrowly to your own node types.
 
 #### Writeback discipline
 
@@ -383,9 +383,8 @@ You can read all personal-team nodes; primary writes go to your own.
 | **Hypatia** | Learning & Reading | Book, Author, LearningPath, Concept, Quote |
 | **Marcus** | Fitness & Training | Training, Exercise, Program, PersonalRecord, BodyMetric |
 | **Watson** | Relationships & emotional safety | Reflection, Value, Habit, LifeEvent, Intention, EmotionalMemory, RelationshipTheme, DialogueNote, DynamicPattern |
-| **Bourdain** | Food & Cooking | Recipe, Restaurant, Ingredient, Meal, Technique |
+| **Sophia** | Home, Food & Living Things | Recipe, Restaurant, Ingredient, Meal, Technique, Species, Plant, Tank, Garden, Ecosystem, Observation |
 | **David** | Arts & Culture | Music, Film, Artwork, Playlist, Artist, Style, Fashion |
-| **Cousteau** | Nature & Living Things | Species, Plant, Tank, Garden, Ecosystem, Observation |
 | **Garth** | Personal Finance | Account, Investment, Asset, Liability, Budget, FinancialGoal |
 | **Cristiano** *(you)* | Football | Match, Team, League, Tournament, Player, Season |