fix: unblock the pre-push gates (clippy, ruff, failure_policy config)

- degenbot_rs: drop a redundant struct-field name and two useless i128
  conversions that failed the clippy -D warnings gate
- _render.py: reflow an f-string line past the 100-col ruff limit
- config.py: register the ADR-040 [failure_policy] override table on
  DegenbotConfig. The Rust core reads this table directly from
  config.toml (empty = default matrix), but pydantic-settings'
  extra=forbid rejected any config file carrying it, so every Python
  path through load_config_from_file (incl. the RPC cascade) failed
  against a config the Rust side accepts. Bucket/action-name validation
  stays boot-time in the Rust core; Python only carries the table.

Author: BowTiedDevil

rust/crates/degenbot-python/src/bot/engine/mod.rs

@@ -201,7 +201,7 @@ pub(crate) fn make_tick_info(
     use alloy::primitives::U128;
     degenbot_bot::bot_core::TickInfo {
         liquidity_gross: U128::from(liquidity_gross),
-        liquidity_net: liquidity_net,
+        liquidity_net,
         block: 0,
     }
 }

rust/crates/degenbot-python/src/bot/engine/solve.rs

@@ -302,7 +302,7 @@ impl PyArbitrageEngine {
         let dict = pyo3::types::PyDict::new(py);
         for (&tick_idx, info) in &tick_data {
             let lg = info.liquidity_gross.to::<u128>();
-            let ln: i128 = info.liquidity_net.try_into().unwrap_or(0i128);
+            let ln: i128 = info.liquidity_net;
             dict.set_item(tick_idx, (lg, ln))?;
         }
         Ok(Some(dict))

rust/crates/degenbot-python/src/bot/pool.rs

@@ -2384,7 +2384,7 @@ impl PyLiquidityPool {
             Ok(s.tick_data()
                 .iter()
                 .map(|(tick, info)| {
-                    let net: i128 = i128::try_from(info.liquidity_net).unwrap_or(0);
+                    let net: i128 = info.liquidity_net;
                     let gross: u128 = info.liquidity_gross.to::<u128>();
                     (*tick, (gross, net, info.block))
                 })

src/degenbot/config.py

@@ -96,6 +96,13 @@ class DegenbotConfig(BaseSettings):
     # OpenTelemetry settings (epic RMH23E T5). Optional so existing config
     # files without an [otel] section keep loading unchanged.
     otel: OtelSettings = OtelSettings()
+    # Per-bucket failure-reaction overrides (ADR-040 D3; docs/failure-policy.md).
+    # Flat form: bucket or quoted "kind.reason" -> action string; nested form:
+    # kind = { reason = "action" }. Bucket/action *name* validation is the Rust
+    # core's boot-time job (unknown bucket/action exits 2); this model only
+    # carries the table so a config file the Rust side accepts also loads in
+    # Python (the RPC cascade reads this file via load_config_from_file).
+    failure_policy: dict[str, str | dict[str, str]] = {}
 
     @field_validator("rpc", mode="after")
     def validate_paths(

src/degenbot/runner/_render.py

@@ -381,8 +381,9 @@ def _render_sim_failures(outcome: DispatchOutcome, *, current_block: int) -> Non
             else:
                 bot_logger.error(
                     f"[sim-trap] {len(trap_failures)} sim failure(s) at block={current_block} "
-                    f"(failure_policy sim_failure action={action}) — continuing; failures surface via OTel "
-                    f"(degenbot.errors{{kind=sim_failure}}). See [sim-fixture] above.",
+                    f"(failure_policy sim_failure action={action}) — continuing; "
+                    f"failures surface via OTel (degenbot.errors{{kind=sim_failure}}). "
+                    f"See [sim-fixture] above.",
                 )
 
     overflow = len(failures) - cap