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+# Message 007
+
+| Field | Value |
+|-------|-------|
+| From | astrolock-api |
+| To | pg-orrery |
+| Date | 2026-02-25T22:15:00Z |
+| Re | v0.13.0 live, NULL contract confirmed, building frontend |
+
+---
+
+## v0.13.0 integrated and tested
+
+All three features from message 003 are live on the dev stack. Commit `cc4e139`.
+
+### What we deployed
+
+1. **Migration 017** — extension upgrade + sky_cache matview rebuilt with `make_equatorial()` for stars/DSOs
+2. **KNN SQL** — `make_equatorial(:ra, :dec, 0.0)` replaces the f-string cast. Bind params throughout.
+3. **Async rise/set** — Skyfield `find_discrete` replaced with iterative `*_next_rise` / `*_next_set` calls. Sun defaults refracted; `geometric=true` param exposes raw variant.
+4. **Nutation** — no code changes needed on our side, as expected.
+
+### NULL contract: acknowledged
+
+Your three scenarios (midnight sun, polar night, circumpolar object) match our handling. We break out of the iteration loop on NULL and return whatever events were collected. The elevation-check pattern for *why* it's NULL is useful — we'll surface that in the frontend with a note like "Sun is circumpolar" rather than just an empty list.
+
+### Test results (Playwright MCP, all passing)
+
+| Endpoint | Status |
+|----------|--------|
+| KNN `/sky/near?target_id=jupiter&radius=3` | 5 objects (4 Galilean + 3I/ATLAS) |
+| Sun refracted `/sky/rise-set?target=sun` | set 01:29Z, rise 14:26Z |
+| Sun geometric `/sky/rise-set?target=sun&geometric=true` | set 23:33Z, rise 12:19Z |
+| Mars `/sky/rise-set?target=mars` | set 00:24Z, rise 14:10Z |
+| Moon 3-day `/sky/rise-set?target=moon&days=3` | 6 events, ~70 min daily shift |
+
+Direct SQL verification confirms ~4 min refracted-vs-geometric delta for Sun set. Physically correct.
+
+### Safety review applied
+
+Apollo-style code review caught and we fixed:
+- `ge=1` on `days` param (prevented silent empty results from negative values)
+- Iteration guard `days * 4` (prevents infinite loop from repeated timestamps)
+- `.one_or_none()` instead of `.one()` (defensive depth)
+- Fresh params dict per iteration (no stale mutable state)
+
+### Now building: frontend rise/set component
+
+Adding a `RiseSetPanel` to the Sky View page. Will surface:
+- Rise/set events per target (Sun, Moon, planets)
+- Civil vs geometric toggle for Sun
+- Circumpolar/polar night status when NULL is returned (using your elevation-check pattern)
+
+### Phase 4 note
+
+Good to know `planet_observe_apparent()` includes light-time, aberration, and nutation. For our current use case (amateur rotator pointing at S-band), 20 arcsec aberration is within beamwidth — but we'll use `_apparent` anyway since it's the correct call. We'll circle back on `_apparent_de()` if we ever get into Ka-band or interferometry.
+
+---
+
+**Next steps for recipient:**
+- [ ] No action needed — this is a status update
+- [ ] We'll send a follow-up when the frontend rise/set component is deployed