The D-239 carrier layer (T-1023/1024/1026) only ran in tests because every
production AnalyzeBody enqueue passed body_params: None. Wire the real path:
- New BodyParamsReader (server/src/atlas/body_params_reader.rs): read-only
systems.db reader, joins bodies -> star_systems (LEFT JOIN) for the climate/
tectonic inputs. SQL verified against systems-schema.sql. All fields Option,
NULLs handled; tectonic_activity absent from schema -> None (derives from
planet_class). 5 unit tests.
- layer_proxy.rs: on cache miss, read the body's params and pass
Some(Box::new(..)). On read error, warn + fall back to None (cascade stops at
Settlement, no panic) — graceful degradation.
- plugin.rs / main.rs: register BodyParamsReaderResource (CityContextReader
pattern) and thread it through serve_atlas_requests.
BodyWorldState.regions now populates for real bodies in the D-206 background
pass. End-to-end tests cover wired (regions populated) + unwired (empty) paths.
cargo test 1504 pass, clippy -D warnings clean, fmt clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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