feedback7 dober: a boss field's perfect-payout card is paid only where the client's result agrees with its own b.progress (b.progress.leaksBy splits the field's LP per player); golden: unchanged

Seen (review of this branch): the Final Assault / Hidden Core path trusts a client's b.result — validateClientResult skips
the leak multiset for boss fields and nothing re-simulates — while the team LP a field costs arrives through b.progress.leaks.
Commit 05eb2b80 paid the perfect-payout cards from the result's leaked list, so a modified authority could have the server
charge a leak and then report two empty lists (LP 58 -> 57 charged, both seats +2: FORGE_BOTH_EMPTY) or pin the leak on the
partner's list (the forger +2, the partner 0: FORGE_PAY).
Now: b.progress carries `leaksBy` (shared/protocol.js, optional; spec.js battleProgress for a boss / hidden field): per
player, the LP of the leak entries the result will show (compactResult's list, lpr clamped as on the wire); `leaks` minus its
sum is the leader's own "扣除目标生命" effects (boss "Doom" / 斥退 / 萨米 Doom), which are no leak and must not cost a perfect
seat its card. The browser runner and the test SimClient send it; the server keeps the highest value per player (f.leaksBy).
Match._bossLeaksAgree (called by _finishFinal) pays a seat of a client-reported field only when (a) the LP the authority
reported was split at all (leaksBy seen whenever lpReported > 0 — a report without the split explains nothing) and (b) the
seat's leaked list shows at least the leak LP reported for it. A server-run field (no client, a takeover) is the truth itself.
Not stopped, and said so in the docs: an authority that lies consistently (a split that blames the partner, a leak labelled as
the leader's effect) — the boss path has no second source; what is caught is a result that contradicts its own progress.
Tests (test first; the three forge tests failed on the parent with [2, 2] / [2, 0] paid, the runner test on the missing field):
clientCombat.test.js — charged leak + two empty lists -> 0 / 0; the leak moved to the partner -> 0 / 0 (with and without a
split); honest split -> the clean seat paid, the leaker not, a leader's effect LP costs nobody; two honest SimClients end to
end; the protocol field; runner.test.js — the browser runner's boss progress carries leaksBy; docs-consistency pins the
b.progress signature. Grok's two repro scripts now print +0 / +0.
Golden: unchanged (matches 18 / full 283 scenarios match; every golden boss field is server-run).

test/match/runner.test.js

@@ -217,6 +217,12 @@ test('boss field: the local pool follows b.pool (server hp − unacknowledged lo
   assert.ok(last.bossDmg <= pool.cum);
   assert.ok(last.by && typeof last.by === 'object');
   assert.equal(typeof last.leaks, 'number');
+  // the per-player split of the leak LP (the server holds the result's leaked lists to it, Match._bossLeaksAgree): the
+  // leaks of every player of the field, never more than the field's LP cost (leader effects make up the rest)
+  assert.ok(last.leaksBy && typeof last.leaksBy === 'object', 'boss progress carries leaksBy');
+  assert.deepEqual(Object.keys(last.leaksBy).sort(), start.spec.players.map((p) => p.playerId).sort());
+  assert.ok(Object.values(last.leaksBy).every((n) => Number.isFinite(n) && n >= 0));
+  assert.ok(Object.values(last.leaksBy).reduce((a, b) => a + b, 0) <= last.leaks + 1e-9);
   r.net.emit('b.pool', { hp: pool.maxHp * 0.5, max: pool.maxHp, teamLp: 20, acked: { [start.fieldId]: pool.cum } });
   assert.ok(Math.abs(pool.hp - pool.maxHp * 0.5) < 1e-6, 'server hp when everything is acknowledged');
   r.runner.dispose();