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  (D-057 character-verb differentiation — marked superseded)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  superseded.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>

decisions/content.md

@@ -46,7 +46,7 @@ How narrative, NPCs, and world content are created: content tiers, NPC generatio
 
 ### D-032: Separate monologue pools per character [SUPERSEDED]
 - **Date:** 2026-02-11
-- **Superseded by:** [D-117](scope.md#d-117-tycoon-is-the-v02-bookmark--zero-investigation-content) (single tycoon character in v0.2 eliminates the smuggler/detective hard partition). The principle of character-specific monologue pools survives — the tycoon has their own monologue pool. The hard partition between smuggler and detective does not apply when there is only one playable character. Per [D-127](#d-127-player-choices-are-the-content--rimworld-model-job-as-rails), the player's monologue reflects their character background. The partition design is preserved as a pattern for when multiple playable characters are reintroduced.
+- **Superseded by:** Development cascade (CLAUDE.md) — character/NPC monologue content is Phase 6 detail-coloring, below the current Phase 1 (wiki content). The smuggler/detective archetype enum and its hard-partitioned monologue pools were pre-cascade scaffolding and have been fully stripped from the server codebase (Sprint 37, #878). The original D-117 supersession framing (single tycoon character in v0.2) is itself obsolete now that v0.2 is dropped (CLAUDE.md: "v0.2 target is dropped"). The partition *design pattern* is preserved in this record for when culture-driven / generator-produced monologue is reintroduced in Phase 6, but no corresponding code or content exists today. Amendment (2026-04-21, Sprint 37): enum + content scaffolding deleted from `server/src/bridge/types.rs`, `server/src/simulation/monologue.rs`, observer relabeling logic, and `server/content/modules/tier1/smuggling_ring_v0_1.yaml`.
 - **Decision:** Internal monologue content is hard-partitioned by playable character. The smuggler and detective have completely separate monologue pools — no shared lines. The `character` tag on monologue lines is a hard partition, not a filter. File structure uses separate files per character per location (e.g., `monologue-smuggler.yaml`, `monologue-detective.yaml`).
 - **Rationale:** Shared monologue would dilute character voice and undermine the dual-lens experience. Each character's internal voice must be independently coherent. Same trigger, different pool — this is how mirror moments work without either pool knowing about the other.
 - **Cross-reference:** Dialogue lines remain character-agnostic — the access tier system (D-028 Layer 1) handles per-character filtering without separate pools.
@@ -80,7 +80,7 @@ How narrative, NPCs, and world content are created: content tiers, NPC generatio
   - `mood` (list\<enum\>): 8 moods for v0.1 — D-028 Layer 4 weighted selection
   - `tags` (list\<string\>): freeform escape hatch for author intent
 - **Monologue-specific additions:**
-  - `character` (enum): `smuggler`, `detective` — hard partition per D-032 **[Obsolete post-D-117: smuggler/detective eliminated. v0.2 uses culture-driven voice per D-121; this enum is unused.]**
+  - `character` (enum): historically `smuggler`, `detective` — removed. Per [D-032 SUPERSEDED] and the development cascade (CLAUDE.md), character-partitioned monologue is Phase 6 and has been stripped from the codebase (Sprint 37, #878). Field is unused; do not reintroduce without a confirmed Phase 6 design.
   - `trigger` (enum): 9 trigger types (enter_location, observe_npc, hear_sound, observe_anomaly, post_conversation, discover_evidence, witness_interaction, time_idle, return_visit)
   - `prerequisite` (map or null): knowledge state gate
 - **Authoring-only tags (not consumed by engine):** `dual_lens` (map, per-character notes), `notes` (string)