fix(ci): remove weekly MSRV release run

docs/dependency-policy.md

@@ -14,11 +14,9 @@ missing, or the dependency lacks an implemented responsibility in
 consumer and dependency scope, all approved duplicate sets, native direct
 dependencies, review dates, and the resolved external package count.
 
-The policy intentionally distinguishes Rust 1.96.0, the minimum supported Rust
-version, from current stable Rust used for development and release validation.
-The release matrix checks both. Raising the MSRV requires an explicit policy,
-matrix, documentation, and changelog review; ordinary dependency updates may
-not raise it accidentally.
+Development and release validation use the current stable Rust toolchain pinned
+by the workflows. Dependency review records compiler requirements without
+installing or testing an additional historical toolchain.
 
 ## Automated gates
 
@@ -67,7 +65,7 @@ The graph is reviewed at least quarterly using `reviewed_on` and `review_by`.
 RustSec advisories are reviewed immediately. For every update:
 
 1. identify the implemented caller and confirm the dependency remains needed;
-2. inspect release notes, maintenance state, license, MSRV, enabled features,
+2. inspect release notes, maintenance state, license, compiler requirements, enabled features,
    native code, and target-specific build behavior;
 3. update one crate deliberately with `cargo update -p NAME --precise VERSION`;
 4. rerun the dependency audit, `cargo-deny`, `cargo-machete`, and the affected