feat: consolidate schema changes from crew directories

Merges schema additions from crew/fang, crew/giles, crew/grip, and crew/wolf:

- crystallizes: bool field for work economics (compounds vs evaporates)
- work_type: WorkType field for assignment model (mutex vs open_competition)
- source_system: string field for federation adapter tracking
- quality_score: *float32 for aggregate quality (0.0-1.0)
- delegated-from: new dependency type for work delegation chains

Migrations properly sequenced as 037-040 (after existing 036 owner_column).

Also fixes test compilation errors for removed TypeRig and IsBuiltIn references.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Executed-By: beads/crew/dave
Rig: beads
Role: crew

internal/storage/sqlite/migrations.go

@@ -53,6 +53,10 @@ var migrationsList = []Migration{
 	{"closed_by_session_column", migrations.MigrateClosedBySessionColumn},
 	{"due_defer_columns", migrations.MigrateDueDeferColumns},
 	{"owner_column", migrations.MigrateOwnerColumn},
+	{"crystallizes_column", migrations.MigrateCrystallizesColumn},
+	{"work_type_column", migrations.MigrateWorkTypeColumn},
+	{"source_system_column", migrations.MigrateSourceSystemColumn},
+	{"quality_score_column", migrations.MigrateQualityScoreColumn},
 }
 
 // MigrationInfo contains metadata about a migration for inspection
@@ -113,6 +117,10 @@ func getMigrationDescription(name string) string {
 		"closed_by_session_column":     "Adds closed_by_session column for tracking which Claude Code session closed an issue",
 		"due_defer_columns":            "Adds due_at and defer_until columns for time-based task scheduling (GH#820)",
 		"owner_column":                 "Adds owner column for human attribution in HOP CV chains (Decision 008)",
+		"crystallizes_column":          "Adds crystallizes column for work economics (compounds vs evaporates) per Decision 006",
+		"work_type_column":             "Adds work_type column for work assignment model (mutex vs open_competition per Decision 006)",
+		"source_system_column":         "Adds source_system column for federation adapter tracking",
+		"quality_score_column":         "Adds quality_score column for aggregate quality (0.0-1.0) set by Refineries",
 	}
 
 	if desc, ok := descriptions[name]; ok {