feat(router): truly uncap the mux standby pool, filled in the background - #4202
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Operator direction: set up every disjoint route the topology offers, held in warm standby, ready to switch in at a moment's notice — not a small reserve. - adaptStandbyMax 60 -> 512 so Mux (= adaptRevActive + adaptStandbyMax) is 513; 512 sits above any realistic single-exit disjoint count (~480 for a warm visor), so the binding limit is the topology, not the constant. - Decouple foreground from background so the uncap is not a connect-time storm: establishMuxRoutes caps its SYNCHRONOUS initial dial at initialForegroundMux (16) — a lean mux that returns fast — and the background self-heal fills the rest of the disjoint pool one leg at a time. - Self-heal no-progress backoff: once N consecutive dials fail to grow the degree (the disjoint set is exhausted for now), settle at the achievable degree and stop instead of hammering the setup node toward an unreachable 513. A later leg death or newly-online transport re-triggers the heal, so the target is a ceiling the fill tracks the topology up to, never a storm. bundle.wasm regenerated (TinyGo); parity_test (wazero) green; the adaptive Mux assertion updated 61 -> 513.
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Operator direction: set up every disjoint route the topology offers, held in warm standby, ready to switch in at a moment's notice.
adaptStandbyMax60 → 512 (Mux = 513); 512 sits above any realistic single-exit disjoint count (~480 for a warm visor), so the binding limit is the topology, discovered by the self-heal backoff — not the constant.establishMuxRoutescaps its synchronous initial dial atinitialForegroundMux(16) — a lean mux that returns fast — and the background self-heal fills the rest one leg at a time.bundle.wasmregenerated (TinyGo);parity_testgreen; adaptive Mux assertion 61 → 513.