docs(events): mark hot-reloadable inference rules done

Author: Nigel Tatschner

docs/superpowers/follow-ups/2026-05-17-event-handling.md

@@ -18,9 +18,6 @@ Plan: `docs/superpowers/plans/2026-05-17-event-handling-improvements.md`
 - **Learned / auto-tuned inference confidence.** Currently hand-picked
   per rule. Could be tuned by tracking how often each rule is
   superseded by an observed event.
-- **Hot-reloadable inference rules via remote manifest.** The
-  infrastructure exists (`parser_defs.rs` ed25519 + manifest); needs an
-  inference-rule schema.
 - **Sidebar-style entity rail UI variant.** Considered during
   brainstorming; deferred to keep tray UI single-column.
 
@@ -106,6 +103,36 @@ Plan: `docs/superpowers/plans/2026-05-17-event-handling-improvements.md`
 
 ## Done
 
+- **Hot-reloadable inference rules via the remote-manifest path.**
+  The inference engine now walks a runtime `&[CompiledInferenceRule]`
+  rather than hardcoded free functions, and the parser-definition
+  manifest carries a new additive `inference_rules` field. **Done in
+  a510abf + b5977c3 + 293bf99 + a041e4f.** `a510abf` introduces
+  `CompiledInferenceRule` + `InferenceMatch` and refactors
+  `infer()` to delegate to `infer_with_rules`; the three built-ins
+  move into `built_in_inference_rules()` (location-change keeps
+  stateful Mutex-backed state). `b5977c3` adds
+  `inference_defs.rs` with `RemoteInferenceRule` / `EventPattern` /
+  `EventTemplate` / `compile_inference_rules` plus
+  `${trigger.<field>}` + `${trigger.idempotency_key}` substitution;
+  extends `Manifest` with the additive `inference_rules` field
+  (`#[serde(default, skip_serializing_if = "Vec::is_empty")]` for v1
+  back-compat). `293bf99` wires the new field through the server's
+  `/v1/parser-definitions` handler and the utoipa doc shapes.
+  `a041e4f` extends `RuleCache` to compile + cache inference rules
+  alongside the regex rules; `CompiledInferenceRule.apply` moves
+  from `Box<dyn Fn>` to `Arc<dyn Fn>` so the rule is `Clone` and
+  the cache can hand out fresh `Vec`s cheaply. The actual call
+  site (`infer_with_rules` inside the ingest pipeline) remains
+  tracked under "Inference engine not wired into client ingest"
+  above — this commit only lands the schema + compile + cache.
+
+  Note: the manifest's `signature` field is still a passthrough
+  `Option<String>` with no in-tree signing logic, so inference
+  rules currently ride on TLS trust alongside the parser rules.
+  When trust comes online the signed payload must include
+  `inference_rules`.
+
 - **`inference.rs` `reconcile_supersedes` doc-comment vs behaviour mismatch.**
   Doc said scan is bounded by `window_size`, code scans full slice.
   Behaviour was correct (it `break`s on first match) but the comment