chore(meta): update changelog for sprint 37 server

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

CHANGELOG.md

@@ -6,6 +6,25 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+### Added
+- **Atlas determinism smoke test** (#847) — `make test-atlas-determinism` runs `generate_atlas.process_body()` twice with a fixed seed and diffs the output to catch determinism regressions in terrain analysis, city placement, A* routing, and naming
+- **SelectedBookmark save/load** (#863) — bookmark and starting-location choice now persist across save/load; replaces the v0.2-deferred TODO on `SelectedBookmark`
+- **`BookmarkPlugin::new(registry)` injection** (#862) — test-friendly plugin construction for future TOML bookmark loading; default constructor still wires the canonical tycoon registry
+- **Six new corporation wiki pages** (#860) — Arbour Aggregates, Earth Standard Group, Rush Mining, Scapa Flow Industries, Sede Chemical Works, Threshold Fuel Syndicate
+- **Atlas naming corridor-scoped dedup, compass-direction filter, river vocab filter, infra pair-naming** (#853) — city and mountain names deduplicate across bodies within a corridor; compass-direction defaults blocked in the few-shot prompt; navigational vocabulary (`Flow`, `Current`) rejected for rivers; unnamed roads and railroads receive deterministic `{CityA}–{CityB} {corridor_suffix}` names
+
+### Changed
+- **Economy coverage gate** (#860) now passes end-to-end — closes the 21 raw-commodity / system gaps that blocked Phase 2 demand simulation
+- Tag updates on 15 existing corporation wiki pages to match commodity coverage needs
+
+### Fixed
+- Storyteller `activation_pass` "no Simmering triangles — holding" no longer fires as `warn` during normal early-game state — downgraded to `debug` (#789)
+
+### Removed
+- **`PROTOCOL_VERSION` lockstep handshake** (#874, D-192) — `HandshakeMessage` is now empty; schema drift surfaces as MessagePack missing-field errors downstream, which is the intended signal
+- **`HeritageRoot` type alias and `ZonePaletteModifier::Heritage` variant** (#877, D-167) — last stubs of the abstract heritage-root system retired in favour of the corridor cultural framework
+- **`CharacterArchetype` (Smuggler/Detective) trace from server** (#878) — enum, IPC field, verb-differentiation branch in the observer Phase 2 filter (D-057 superseded), monologue pool partitioning, Gauntlet plumbing, drama-module schema, archetype-dependent integration tests. Per the development cascade, character/NPC differentiation is Phase 6 work and the running trace was pre-cascade filler, not production. Client-side cleanup tracked in #882.
+
 ## [v0.1.36] — 2026-04-21
 
 ### Added