Simplify: one Lightning path, one balance, fewer features

Dropped: silent payments (feature, wallet chains, scan worker, indexer
config), Boltz submarine/reverse swaps (feature + swap.js + tools), the
third-party ark swap bridge (config, client flows, settings card — the
ASP's own Lightning send is the one path now), and the Consolidate
coins settings action.

The NWC pouch is gone with them: background answering now spends the
WHOLE ark balance. The IndexedDB record mirrors the real manager state
plus the chain-3 keys for its live coins and a change-index window; the
worker pays through the ASP exactly like the open app, and the app
folds the worker's spends, change, and key allocations back in on
connect (additive merge + reconcile against the server). A leftover
chain-6 pouch from the short-lived pouch era is swept home
automatically using the keys stored in its own record. The stated
tradeoff: same-origin script access now reaches the ark balance, not a
carve-out — the ark balance is walking-around money, the on-chain
wallet's keys are never mirrored, and per-connection NWC budgets remain
the enforced ceiling.

Bundle: 726KB -> 602KB.

Co-Authored-By: Claude Fable 5 <[email protected]>

1 files changed, 3 insertions, 4 deletions

diff --git a/src/features/index.js b/src/features/index.js
index 06d8d4d..583334f 100644
--- a/src/features/index.js
+++ b/src/features/index.js
@@ -5,17 +5,16 @@
 // bundle. See featureIndexSource() in build.js.
 
 import { giftsFeature } from './gifts.js';
-import { swapsFeature } from './swaps.js';
 import { arkFeature } from './ark.js';
 import { zapsFeature } from './zaps.js';
-import { spFeature } from './sp.js';
 import { syncFeature } from './sync.js';
 import { nwcFeature } from './nwc.js';
 
 // NB order is meaningful where hooks stack: gifts' receive takeover and
 // balance line come before ark's, matching the pre-plugin layout. zaps sits
 // after ark so an npub prefers an instant Ark zap and only falls through to a
-// Lightning zap when Ark can't serve it.
+// Lightning zap when Ark can't serve it. nwc sits after ark because it
+// drives ark's headless pay/balance seam.
 export function buildFeatures(ctx) {
-  return [giftsFeature(ctx), swapsFeature(ctx), arkFeature(ctx), zapsFeature(ctx), spFeature(ctx), nwcFeature(ctx), syncFeature(ctx)];
+  return [giftsFeature(ctx), arkFeature(ctx), zapsFeature(ctx), nwcFeature(ctx), syncFeature(ctx)];
 }