refactor(simulation): strip archetype trace + HeritageRoot per cascade (#877, #878)

Sprint 37 dead-code sweep closing out two stale supersession chains:

#877 (D-167, 2026-03-24): Removes HeritageRoot type alias and
ZonePaletteModifier::Heritage variant from server/src/simulation/
generator.rs. The 7 abstract heritage roots were retired in favour of
the corridor cultural system; these two stubs were the only remaining
references.

#878 (D-032 + cascade rule): Strips the entire CharacterArchetype
(Smuggler/Detective) trace from the server. Per lead direction
2026-04-21 and the development cascade (CLAUDE.md), character/NPC/
verb-differentiation/monologue code is Phase 6 detail that should
not exist in code yet. The running archetype trace was pre-cascade
filler, not production — production is only the client's character-
creation UI and insert screens (client follow-up in #882).

Deleted:
- CharacterArchetype enum + StartupMessage.character_archetype field
- archetype_verb_label() + archetype branch of apply_phase2_verb_filter
  (D-057 character-verb differentiation — marked superseded)
- MonologueState.character partitioning
- Gauntlet archetype plumbing (setup_gauntlet no longer takes an archetype)
- server/content/schemas/drama_module.schema.yaml (zero Rust consumers)
- server/content/modules/tier1/smuggling_ring_v0_1.yaml
- server/tests/archetype_monologue.rs (regression guard for the removed system)
- server/tests/v01_integration_playthrough.rs (archetype-dependent)

Decision updates:
- decisions/content.md D-032 supersession rewritten to cite the cascade
  (v0.2 drop invalidated the prior D-117 framing).
- decisions/content.md D-035 tag taxonomy: `character` enum footnote
  updated; field noted as unused, do not reintroduce without a
  confirmed Phase 6 design.
- decisions/perception.md D-057: archetype-verb differentiation marked
  superseded.

Also bundles the types.rs version-field removal from #874 since the
file was already touched here.

Full trace audit in docs/architecture/sprint-37-878-audit.md.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/perception/observer/tests.rs

@@ -59,7 +59,6 @@ fn player_always_visible_in_snapshot() {
 
     let buffer = world.resource::<SnapshotBuffer>();
     let snapshot = buffer.snapshot.as_ref().expect("snapshot should exist");
-    assert_eq!(snapshot.version, PROTOCOL_VERSION);
     assert_eq!(snapshot.entities.len(), 1);
     assert!(matches!(snapshot.entities[0].kind, EntityKind::Player));
     assert_eq!(snapshot.entities[0].observation, EntityVisibility::Visible);
@@ -679,10 +678,6 @@ fn snapshot_v6_fields_default_through_pipeline() {
     let buffer = world.resource::<SnapshotBuffer>();
     let snapshot = buffer.snapshot.as_ref().expect("snapshot should exist");
 
-    assert_eq!(
-        snapshot.version, PROTOCOL_VERSION,
-        "should be current protocol version"
-    );
     assert_eq!(
         snapshot.player_stance,
         MovementStance::Walk,
@@ -694,29 +689,6 @@ fn snapshot_v6_fields_default_through_pipeline() {
     );
 }
 
-#[test]
-fn snapshot_v6_version_is_protocol_version() {
-    let mut world = setup_world(32, 32);
-    world.spawn((
-        PlayerCharacter,
-        TilePosition::new(16, 16, 0),
-        Facing::default(),
-        KnowledgeGraph::new(),
-        NearbyInteractionBuffer::default(),
-        MonologueBuffer::default(),
-    ));
-
-    run_observer_pipeline(&mut world);
-
-    let buffer = world.resource::<SnapshotBuffer>();
-    let snapshot = buffer.snapshot.as_ref().unwrap();
-    assert_eq!(
-        snapshot.version,
-        crate::bridge::types::PROTOCOL_VERSION,
-        "snapshot version must match PROTOCOL_VERSION constant"
-    );
-}
-
 // -----------------------------------------------------------------------
 // Phase 2 verb filter tests (#422, D-057)
 // -----------------------------------------------------------------------
@@ -967,148 +939,9 @@ fn phase2_no_contradiction_for_active_knowledge() {
     );
 }
 
-#[test]
-fn phase2_smuggler_relabels_container_verbs() {
-    let mut world = setup_world(32, 32);
-    let mut registry = EntityRegistry::new(0);
-
-    // Container at close range, north of player
-    let container = world
-        .spawn((
-            TilePosition::new(16, 15, 0),
-            crate::simulation::interaction::Interactable,
-            ObjectType::Container,
-        ))
-        .id();
-    registry.register(container);
-
-    // Smuggler player
-    let player = world
-        .spawn((
-            PlayerCharacter,
-            TilePosition::new(16, 16, 0),
-            Facing(FacingDirection::North),
-            KnowledgeGraph::new(),
-            NearbyInteractionBuffer::default(),
-            MonologueBuffer::default(),
-            CharacterArchetype::Smuggler,
-        ))
-        .id();
-    registry.register(player);
-    world.insert_resource(registry);
-
-    run_full_pipeline(&mut world);
-
-    let buffer = world.resource::<SnapshotBuffer>();
-    let snapshot = buffer.snapshot.as_ref().unwrap();
-    assert_eq!(snapshot.nearby_interactions.len(), 1);
-    let interaction = &snapshot.nearby_interactions[0];
-    // Container at close range: Open→"Move", Search→"Stash", Observe stays "Observe"
-    let open_verb = interaction.verbs.iter().find(|v| v.kind == VerbKind::Open);
-    let search_verb = interaction
-        .verbs
-        .iter()
-        .find(|v| v.kind == VerbKind::Search);
-    let observe_verb = interaction
-        .verbs
-        .iter()
-        .find(|v| v.kind == VerbKind::Observe);
-    assert_eq!(open_verb.unwrap().label, "Move", "smuggler Open→Move");
-    assert_eq!(search_verb.unwrap().label, "Stash", "smuggler Search→Stash");
-    assert_eq!(observe_verb.unwrap().label, "Observe", "Observe unchanged");
-}
-
-#[test]
-fn phase2_detective_relabels_container_verbs() {
-    let mut world = setup_world(32, 32);
-    let mut registry = EntityRegistry::new(0);
-
-    let container = world
-        .spawn((
-            TilePosition::new(16, 15, 0),
-            crate::simulation::interaction::Interactable,
-            ObjectType::Container,
-        ))
-        .id();
-    registry.register(container);
-
-    // Detective player (explicit)
-    let player = world
-        .spawn((
-            PlayerCharacter,
-            TilePosition::new(16, 16, 0),
-            Facing(FacingDirection::North),
-            KnowledgeGraph::new(),
-            NearbyInteractionBuffer::default(),
-            MonologueBuffer::default(),
-            CharacterArchetype::Detective,
-        ))
-        .id();
-    registry.register(player);
-    world.insert_resource(registry);
-
-    run_full_pipeline(&mut world);
-
-    let buffer = world.resource::<SnapshotBuffer>();
-    let snapshot = buffer.snapshot.as_ref().unwrap();
-    assert_eq!(snapshot.nearby_interactions.len(), 1);
-    let interaction = &snapshot.nearby_interactions[0];
-    let open_verb = interaction.verbs.iter().find(|v| v.kind == VerbKind::Open);
-    let search_verb = interaction
-        .verbs
-        .iter()
-        .find(|v| v.kind == VerbKind::Search);
-    assert_eq!(open_verb.unwrap().label, "Scan", "detective Open→Scan");
-    assert_eq!(search_verb.unwrap().label, "Flag", "detective Search→Flag");
-}
-
-#[test]
-fn phase2_default_archetype_is_detective() {
-    // When no CharacterArchetype component attached, defaults to Detective
-    let mut world = setup_world(32, 32);
-    let mut registry = EntityRegistry::new(0);
-
-    let container = world
-        .spawn((
-            TilePosition::new(16, 15, 0),
-            crate::simulation::interaction::Interactable,
-            ObjectType::Container,
-        ))
-        .id();
-    registry.register(container);
-
-    // Player WITHOUT CharacterArchetype component
-    let player = world
-        .spawn((
-            PlayerCharacter,
-            TilePosition::new(16, 16, 0),
-            Facing(FacingDirection::North),
-            KnowledgeGraph::new(),
-            NearbyInteractionBuffer::default(),
-            MonologueBuffer::default(),
-        ))
-        .id();
-    registry.register(player);
-    world.insert_resource(registry);
-
-    run_full_pipeline(&mut world);
-
-    let buffer = world.resource::<SnapshotBuffer>();
-    let snapshot = buffer.snapshot.as_ref().unwrap();
-    assert_eq!(snapshot.nearby_interactions.len(), 1);
-    let interaction = &snapshot.nearby_interactions[0];
-    // Default = Detective labels
-    let open_verb = interaction.verbs.iter().find(|v| v.kind == VerbKind::Open);
-    assert_eq!(
-        open_verb.unwrap().label,
-        "Scan",
-        "default archetype should use Detective labels"
-    );
-}
-
 #[test]
 fn phase2_non_container_keeps_default_labels() {
-    // Readable objects should keep their default labels regardless of archetype
+    // Readable objects keep their default labels (post-archetype cleanup, D-032 SUPERSEDED).
     let mut world = setup_world(32, 32);
     let mut registry = EntityRegistry::new(0);
 
@@ -1129,7 +962,6 @@ fn phase2_non_container_keeps_default_labels() {
             KnowledgeGraph::new(),
             NearbyInteractionBuffer::default(),
             MonologueBuffer::default(),
-            CharacterArchetype::Smuggler,
         ))
         .id();
     registry.register(player);
@@ -1145,7 +977,7 @@ fn phase2_non_container_keeps_default_labels() {
     assert_eq!(
         read_verb.unwrap().label,
         "Read",
-        "Readable labels unchanged for smuggler"
+        "Readable labels unchanged"
     );
 }