docs(sprints): mark Track D (West Reach) done in copy briefing

Also includes star_type DB fixes and proposal file updates from
the west_reach authoring session.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/atlas/proposals/GJ208.json

@@ -39,7 +39,7 @@
       "orbit_index": 2,
       "parent_body_id": null,
       "inhabited": true,
-      "population": 42000,
+      "population": 800,
       "mass_class": "terrestrial",
       "surface_gravity": 0.84,
       "orbital_period_days": 100.0,

docs/atlas/proposals/GJ231.json

@@ -144,7 +144,7 @@
       "surface_gravity": 0.13,
       "orbital_period_days": 6.4,
       "rotation_period_hours": 153.6,
-      "atmosphere": "trace",
+      "atmosphere": null,
       "biome_summary": "frozen",
       "hydrosphere": null,
       "economic_role": null,

docs/atlas/proposals/GJ320.json

@@ -124,7 +124,7 @@
       "surface_gravity": 0.12,
       "orbital_period_days": 5.6,
       "rotation_period_hours": 134.4,
-      "atmosphere": "trace",
+      "atmosphere": null,
       "biome_summary": "frozen",
       "hydrosphere": null,
       "economic_role": null,

docs/atlas/proposals/GJ453.json

@@ -124,7 +124,7 @@
       "surface_gravity": 0.12,
       "orbital_period_days": 5.6,
       "rotation_period_hours": 134.4,
-      "atmosphere": "trace",
+      "atmosphere": null,
       "biome_summary": "frozen",
       "hydrosphere": null,
       "economic_role": null,

docs/sprints/sprint-29/copy.md

@@ -30,6 +30,18 @@ contexts (shutdown + respawn, or user-initiated context clear) to prevent
 accumulated review data from prior systems causing bleed or context
 pressure in the next review cycle.
 
+**Agent spawn requirements:**
+- All spawned agents (Miri, Paula, Ozzie) must be instructed to read
+  `.claude/skills/atlas/SKILL.md` and the relevant review reference
+  (e.g. `references/review-ozzie.md`) on first activation.
+- Inhabited planets should have their OWN name, distinct from the system
+  name. Only match when the wiki explicitly uses the same name for both.
+- Secondary stations (commercial, research, agricultural, industrial)
+  must reflect institutions described in the wiki — not every system
+  is horizon-only.
+- Occasional rural moons (small, single-function: mining, fungi growing,
+  ore processing — a few hundred to ~1K people) add variety.
+
 ## Work Order
 
 Process by corridor, hop-order within each corridor (closest to Gateway first).
@@ -40,7 +52,7 @@ All tracks run in series on the `copy` branch (parallel worktree approach supers
 | A | #739 | North Reach | 43 | 4-12 | done |
 | B | #740 | South Reach | 47 | 4-10 | done |
 | C | #741 | East Reach | 47 | 4-9 | done |
-| D | #742 | West Reach | 48 | 4-11 | |
+| D | #742 | West Reach | 50 | 4-17 | done |
 | E | #743 | Deep Frontier | 73 | 5-12 | |
 
 Use `tooling/atlas next {hop}` to get the system list per hop.