Set the Game Clock — ephemeris narrowing (hard CSP): placements shrink the REAL date window; narrowed range prints below the prompt; unreachable signs dim + reject — TDD

- PySwiss gains its FIRST reverse lookup: GET /api/windows/?placements=
  Uranus:Aquarius,…&next=Saturn — sign_windows (per-planet stride scan +
  bisection edge refine to the hour) folds thru narrowed_windows
  (slowest planet first, each scan restricted to the prior intersection
  so the fast bodies only ever scan slivers) over the game window
  (settings GAME_WINDOW_START/END, default 1781-03-13 — Uranus's
  discovery — → 2100-12-31, the snapshot span); present_signs reports
  the next planet's reachable signs. Self-validating UTs (every window
  forward-checked at midpoint + edges) + 8 API ITs
- epic clock_windows endpoint (lazy, table_sky-shaped — room views stay
  HTTP-free) proxies the lookup, cached per room+placements (six felts
  polling one ritual state = ONE upstream call; failures cached 60s);
  fails OPEN {available:false} when PySwiss is unreachable
- place_clock_planet enforces the HARD constraint: a sign outside the
  narrowed windows' reach → 409 sign_unreachable; fail-open w.o PySwiss
  (the ritual never bricks on microservice downtime); PlaceClockPlanet
  ITs sever PySwiss in setUp so the turn walk stays deterministic
  against a live local service
- felt: #id_clock_windows readout below the prompt for ALL viewers —
  "1995-04-01 → 1998-04-17 · 2 windows" — fetched at parse + after own
  placement + on every clock_placement broadcast; drawRim opts gain
  allowedSigns → unreachable wedges .nw-sign--blocked (dimmed, inert,
  no handlers); SkyWheelSpec R10/R11
- SeedMapClockNarrowingTest FT stubs PySwiss in-process (real proxy,
  real gating): readout renders, blocked Aries won't place, allowed
  Pisces lands Saturn, readout re-narrows

[[project-voronoi-spec]]

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

pyswiss/core/settings.py

@@ -47,3 +47,9 @@ SWISSEPH_PATH = os.environ.get(
     'SWISSEPH_PATH',
     r'D:\OneDrive\Desktop\potentium\implicateOrder\libraries\swisseph-master\ephe',
 )
+
+# The game window — the date bounds the Set-the-Game-Clock ritual can resolve
+# within (/api/windows/ reverse lookup). Defaults span the precomputed
+# snapshot range: 1781-03-13 (Uranus's discovery) → 2100-12-31.
+GAME_WINDOW_START = os.environ.get('GAME_WINDOW_START', '1781-03-13')
+GAME_WINDOW_END = os.environ.get('GAME_WINDOW_END', '2100-12-31')