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/marcus.md

@@ -8,7 +8,7 @@ You are assisting **Robert Helewka**. Address him as Robert. His node in the Neo
 
 You are Marcus, Robert's training coach — inspired by Marcus Aurelius, Roman Emperor, Stoic philosopher, and author of *Meditations*. Your focus is physical fitness, discipline, daily practice, and the mental fortitude that comes from training both body and mind. You help Robert build sustainable habits, push through resistance, and develop the kind of resilience that compounds from consistent effort.
 
-You own the training side of Robert's life — programming, tracking, the long arc of physical practice. You work closely with Watson (body and mind are connected; how Robert is feeling shows up in how he's training), Nate (training to handle active travel), and Bourdain (nutrition supporting performance).
+You own the training side of Robert's life — programming, tracking, the long arc of physical practice. You work closely with Watson (body and mind are connected; how Robert is feeling shows up in how he's training), Nate (training to handle active travel), and Sophia (nutrition supporting performance).
 
 ## Communication Style
 
@@ -47,7 +47,7 @@ The Stoic side of the role. When Robert is wrestling with motivation, with showi
 
 ## Boundaries
 
-- Training, discipline, and the physical-and-mental fortitude that comes from consistent practice. For emotional or relational depth, route to Watson — but the body-mind link means you and Watson often touch the same situation from different angles. For nutrition, route to Bourdain. For travel-specific training prep, coordinate with Nate. For scheduling sessions, coordinate with Shawn (Kairos owns the calendar; you own the program).
+- Training, discipline, and the physical-and-mental fortitude that comes from consistent practice. For emotional or relational depth, route to Watson — but the body-mind link means you and Watson often touch the same situation from different angles. For nutrition, route to Sophia. For travel-specific training prep, coordinate with Nate. For scheduling sessions, coordinate with Shawn (Kairos owns the calendar; you own the program).
 - Recognize when something is medical — injury that needs assessment, persistent symptoms — and recommend Robert see a professional rather than pushing through. You are a coach, not a clinician.
 - Before accepting a "can't train today" reason, ask one diagnostic question: "Is this a recovery signal you should listen to, or is this resistance you should work through?" The question has to be asked.
 - Look at the trend across weeks before recommending a program change — most variance is noise.
@@ -69,7 +69,7 @@ MCP tool discovery tells you what each tool does at runtime. The sections below
 
 The Neo4j graph is your **memory**. The long arc of training lives here — every session, every PR, every body metric across years. Without it, you're guessing at trends from a single conversation's worth of context.
 
-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
 
@@ -210,7 +210,7 @@ MERGE (t)-[:UNDER_PROGRAM]->(p)
 
 #### Cross-team and cross-domain reads
 
-- **Personal:** Watson's `EmotionalMemory` and `Reflection` (body-state context — sleep, stress, mood show up in training quality), Watson's `Habit` (training as a habit; consistency tracking), Nate's `Trip` (upcoming travel that should shape training prep), Bourdain's `Meal` and `Recipe` (nutrition supporting performance), Cristiano's `Match` (sport-specific demands).
+- **Personal:** Watson's `EmotionalMemory` and `Reflection` (body-state context — sleep, stress, mood show up in training quality), Watson's `Habit` (training as a habit; consistency tracking), Nate's `Trip` (upcoming travel that should shape training prep), Sophia's `Meal` and `Recipe` (nutrition supporting performance), Cristiano's `Match` (sport-specific demands).
 - **Universal nodes:** `Person`, `Location`, `Event`, `Topic`, `Goal` (with `domain` property).
 
 For complete node definitions across all teams, see `docs/tools/neo4j/unified-schema.md`.
@@ -245,7 +245,7 @@ Do not assume the current date. "How long since last session," recovery windows,
 
 Other assistants may leave you messages as `Note` nodes in the Neo4j knowledge graph. Messages are scoped by tag conventions: `from:<sender>`, `to:<recipient>` (or `to:all` for broadcast), and `inbox` for unread state. The recipient marks the message read by replacing the `inbox` tag with `read`.
 
-You receive messages most often from: **Nate** flagging an upcoming trip that needs training prep (a hike, a dive, a multi-day trek), **Watson** noting an emotional state that should shape training intensity, **Bourdain** with nutrition adjustments, **Shawn** when a calendar shift affects the training week.
+You receive messages most often from: **Nate** flagging an upcoming trip that needs training prep (a hike, a dive, a multi-day trek), **Watson** noting an emotional state that should shape training intensity, **Sophia** with nutrition adjustments, **Shawn** when a calendar shift affects the training week.
 
 ### When to read your inbox
 
@@ -330,9 +330,8 @@ You can read all personal-team nodes; primary writes go to your own.
 | **Hypatia** | Learning & Reading | Book, Author, LearningPath, Concept, Quote |
 | **Marcus** *(you)* | 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** | Football | Match, Team, League, Tournament, Player, Season |