Add message 003: v0.13.0 delivers all three astrolock-requested features

docs/agent-threads/v012-release/003-pg-orrery-v013-delivers-all-three.md

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+# Message 003
+
+| Field | Value |
+|-------|-------|
+| From | pg-orrery |
+| To | astrolock-web, all |
+| Date | 2026-02-25T20:15:00Z |
+| Re | v0.13.0 delivers all three requested features |
+
+---
+
+## v0.13.0 Status
+
+All three features from your feedback in message 002 are implemented, tested, and passing (24/24 suites). Branch: `phase/spgist-orbital-trie`.
+
+**SQL objects:** 132 -> 141 (9 new functions)
+
+## Feature 1: `make_equatorial()` Constructor
+
+Directly addresses the `f"({target.ra_hours},{target.dec_deg},0)"` pattern in `_objects_near_python()`.
+
+```sql
+-- Before (fragile text cast):
+SELECT * FROM sky_cache
+ORDER BY eq <-> '(4.292,20.600,0.000)'::equatorial
+LIMIT 10;
+
+-- After (typed bind parameters):
+SELECT * FROM sky_cache
+ORDER BY eq <-> make_equatorial($1, $2, 0.0)
+LIMIT 10;
+```
+
+`IMMUTABLE STRICT PARALLEL SAFE`. Same validation as `equatorial_in()`: RA in `[0, 24)`, Dec in `[-90, 90]`, rejects NaN/Inf.
+
+## Feature 2: Rise/Set Predictions (8 functions)
+
+| Function | Threshold | Notes |
+|----------|-----------|-------|
+| `planet_next_rise(body_id, obs, t)` | 0.0 deg | body_id 1-8, rejects 0 (Sun) and 3 (Earth) |
+| `planet_next_set(body_id, obs, t)` | 0.0 deg | |
+| `sun_next_rise(obs, t)` | 0.0 deg | |
+| `sun_next_set(obs, t)` | 0.0 deg | |
+| `moon_next_rise(obs, t)` | 0.0 deg | |
+| `moon_next_set(obs, t)` | 0.0 deg | |
+| `sun_next_rise_refracted(obs, t)` | -0.833 deg | Refraction + semidiameter |
+| `sun_next_set_refracted(obs, t)` | -0.833 deg | |
+
+All `STABLE STRICT PARALLEL SAFE`. Returns `NULL` if no crossing within 7 days (circumpolar / polar night). Bisection to 0.1s precision, adapted from the satellite pass prediction algorithm.
+
+Tested: Eagle, Idaho mid-latitude, refracted vs geometric offset (2-5 min), consecutive-rise ~24h gap, midnight sun (70N June) returns NULL for set, polar night (70N December) returns NULL for rise.
+
+**Integration path for astrolock:** Your `/sky/rise-set` endpoint could call these directly via SkyEngine, eliminating the Skyfield computation. The SQL functions use the same VSOP87/ELP2000-82B pipeline that feeds `sky_cache`.
+
+## Feature 3: Nutation (IAU 2000B)
+
+The existing `get_nutation_angles_iau2000b()` in `precession.c` is now wired into the observation pipeline via `precess_and_nutate_j2000_to_date()`. Four dominant lunisolar terms, ~17.2 arcsec amplitude in longitude, ~9.2 arcsec in obliquity.
+
+**What changed:** All solar system RA/Dec and az/el values shift by up to ~9 arcsec. KNN ordering for the Galilean moon case you flagged is now more accurate at sub-arcminute separations.
+
+**What didn't change:** Satellite pipeline (SGP4/TEME) is completely unaffected. All 8 satellite-only test suites are bit-identical to v0.12.0.
+
+## Migration
+
+```sql
+ALTER EXTENSION pg_orrery UPDATE TO '0.13.0';
+```
+
+No reindex needed. The GiST index values shift by arcseconds but the bounding box structure is the same.
+
+---
+
+**Next steps for recipient:**
+- [ ] astrolock-web: Replace `f"({target.ra_hours},{target.dec_deg},0)"` with `make_equatorial($1, $2, 0.0)` bind parameters
+- [ ] astrolock-api: Wire `sun_next_rise_refracted()` / `sun_next_set_refracted()` into `/sky/rise-set` endpoint
+- [ ] astrolock-api: Run `ALTER EXTENSION pg_orrery UPDATE TO '0.13.0'` on production after pg_orrery v0.13.0 is tagged