feat: expand threads and npcs schema with deeper tracking fields

Adds detailed tracking columns to threads (stakes, origin, next beat,
etc.) and npcs (appearance, personality, secrets, disposition, etc.),
plus a migration script to add the columns to existing databases.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CLAUDE.md

@@ -130,22 +130,51 @@ CREATE TABLE campaigns (
 --- Trackers ---
 
 CREATE TABLE threads (
-  id          INTEGER PRIMARY KEY,
-  campaign_id INTEGER NOT NULL REFERENCES campaigns(id),
-  title       TEXT NOT NULL,
-  status      TEXT NOT NULL DEFAULT 'active',
-  notes       TEXT,
-  created_at  TEXT NOT NULL DEFAULT (datetime('now'))
+  id                    INTEGER PRIMARY KEY,
+  campaign_id           INTEGER NOT NULL REFERENCES campaigns(id),
+  title                 TEXT NOT NULL,
+  status                TEXT NOT NULL DEFAULT 'active',
+  notes                 TEXT,
+  related_npcs          TEXT,
+  related_location      TEXT,
+  origin                TEXT,
+  stakes                TEXT,
+  last_development      TEXT,
+  next_beat             TEXT,
+  suspected_resolution  TEXT,
+  created_at            TEXT NOT NULL DEFAULT (datetime('now'))
 );
 
 CREATE TABLE npcs (
-  id          INTEGER PRIMARY KEY,
-  campaign_id INTEGER NOT NULL REFERENCES campaigns(id),
-  name        TEXT NOT NULL,
-  description TEXT,
-  notes       TEXT,
-  motivations TEXT,
-  created_at  TEXT NOT NULL DEFAULT (datetime('now'))
+  id                        INTEGER PRIMARY KEY,
+  campaign_id               INTEGER NOT NULL REFERENCES campaigns(id),
+  name                      TEXT NOT NULL,
+  description               TEXT,
+  notes                     TEXT,
+  motivations               TEXT,
+  appearance                TEXT,
+  age                       TEXT,
+  gender                    TEXT,
+  pronouns                  TEXT,
+  voice                     TEXT,
+  distinguishing_features   TEXT,
+  faction                   TEXT,
+  occupation                TEXT,
+  social_status             TEXT,
+  relationship_to_pc        TEXT,
+  loyalty                   TEXT,
+  personality_traits        TEXT,
+  fears                     TEXT,
+  desires                   TEXT,
+  secrets                   TEXT,
+  first_encountered         TEXT,
+  last_seen                 TEXT,
+  current_location          TEXT,
+  current_goal              TEXT,
+  role_in_threads           TEXT,
+  alive_status              TEXT DEFAULT 'alive',
+  disposition               TEXT DEFAULT 'unknown',
+  created_at                TEXT NOT NULL DEFAULT (datetime('now'))
 );
 
 --- Notes ---