feat(runtime): v0.0.21 — Fees pallet wired runtime composition Index 8

Phase 2.4 FEES pallet wired canonical en `frame_support::runtime` macro como
Index 8 (post-Provenance Index 7). 8 → 9 pallets composed canonical. Config
trait RuntimeEvent association wired canonical en configs.rs (pattern Provenance
Phase 2.1 mirror).

## Changes

- crates/origin-chain-runtime/src/lib.rs:285 — Index 8 pub type Fees = origin_chain_fees::Pallet<Runtime>
- crates/origin-chain-runtime/src/configs.rs:347 — impl origin_chain_fees::Config for Runtime { type RuntimeEvent = RuntimeEvent }
- crates/origin-chain-runtime/Cargo.toml — origin-chain-fees workspace dep + std feature
- Cargo.toml — origin-chain-fees workspace dependency
- crates/origin-chain-node/src/main.rs — 8 → 9 pallets listed + Fees Index 8 highlighted + Provenance status updated v0.0.15 → v0.0.17

## Verification

- cargo build -p origin-chain-runtime 13.63s clean
- cargo test --workspace — 123 tests passing, 0 failures
- cargo build --release -p origin-chain-node 4.39s clean
- origin-chain-node info muestra 9 pallets canonical

🔌 Phase 2.4 wired canonical. Real impl v0.0.22 next.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/origin-chain-runtime/src/lib.rs

@@ -280,6 +280,21 @@ mod runtime {
     #[runtime::pallet_index(7)]
     pub type Provenance = origin_chain_provenance::Pallet<Runtime>;
 
+    /// Fees pallet canonical (Phase 2.4 v0.0.21 wired canonical per OCAFB-1..6 +
+    /// DC `origin_chain_amis_fee_bridge_v1` 6/7 firmas sesión 3+ Charon ratified).
+    /// Cross-pillar fee economy consumer Mathi `OitFeeSchedule` trait (commit
+    /// `ce4fafb` 2026-05-24 `arkhe-amis-server/src/fee_schedule.rs`) via vendor
+    /// copy interim Option B (swap canonical post-OCAFB ratify o post Mathi
+    /// sub-crate ship). Scaffold-level v0.0.21: dispatchable
+    /// `compute_fee_for_action` placeholder, real impl v0.0.22 + Runtime API
+    /// v0.0.23.
+    ///
+    /// Naming canonical: alias `Fees` (NO `OriginFees` que conflictaría con
+    /// el trait existente del mismo nombre en `origin_chain_types::pallets`,
+    /// pattern análogo Provenance Index 7).
+    #[runtime::pallet_index(8)]
+    pub type Fees = origin_chain_fees::Pallet<Runtime>;
+
     // Identity pallet DEFERRED a Phase 2.7 (canonical decision empírica
     // 2026-05-21 documentada en configs.rs). pallet-identity 41.0.0 ReservableCurrency
     // compat work canonical hereda al custom `pallet_agent_identity` Phase 2.7