MannaLedger: real anti-hoarding enforcement — d'var yom b'yomo (Step 26)

Shemot 16:4 — d'var yom b'yomo — the day's matter in its day.
Shemot 16:19 — al yoter mimenu ad boker — do not leave surplus.
Shemot 16:20 — vayotiru... vayarum tola'im vayiv'ash — hoarded manna rots.

- MannaLedger GenServer tracks consumption against daily provision
- load_provision/0 reads manna file, resets consumption to zero
- consume/2 deducts from allocated resource, rejects when exhausted
- remaining/1 and available?/2 for balance queries
- enforce_cycle_boundary/0 zeroes out all allocation, returns released amounts
- Chatzotzrot assembly_leaders signal when provision runs low (< 10%)
- Manna.enforce_anti_hoarding/0 now delegates to MannaLedger
- Added to supervision tree in application.ex
- 17 new tests with proper isolation (reset between tests)
- All 177 Elixir tests pass, 0 failures

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vav_pipeline/lib/vav_pipeline/application.ex

@@ -8,6 +8,7 @@ defmodule VavPipeline.Application do
   - AreiMiklat (cities of refuge — protection protocol)
   - EglahArufah (accountability for unknown harm)
   - Bikurim (first fruits — release protocol)
+  - MannaLedger (consumption tracking and anti-hoarding enforcement)
   - ShabbatTimer (mandatory cessation monitor)
   - ShoreshEnginePort (Erlang Port to Haskell engine, if binary found)
   - TalmudicEngineSocket (Unix socket to Prolog engine)
@@ -33,6 +34,7 @@ defmodule VavPipeline.Application do
         {VavPipeline.AreiMiklat, []},
         {VavPipeline.EglahArufah, []},
         {VavPipeline.Bikurim, []},
+        {VavPipeline.MannaLedger, []},
         {VavPipeline.ShabbatTimer, []}
       ]
       |> maybe_add_repo()