chore(source): scope private policy observer and remove redundant import

crates/oa-core/src/language/analysis_source/budget.rs

@@ -221,6 +221,7 @@ impl Budget {
         Ok(value)
     }
     /// Immutable exact policy snapshot for private deliberate-snapshot continuation.
+    #[cfg(test)]
     pub(super) fn limits(&self) -> Limits {
         self.limits
     }

crates/oa-core/tests/mixed_source8_read.rs

@@ -2,7 +2,7 @@
 //! Expected models use authored public values, never a parser or formatter oracle.
 use oa_core::analysis as a;
 use oa_core::analysis_numeric::Exact;
-use oa_core::language::{self, ParseLimits, Span};
+use oa_core::language::{ParseLimits, Span};
 use oa_core::source_project::{ProjectLimits, SourceBundle, SourceDiagnostic};
 pub use oa_core::*;
 use std::collections::BTreeMap;

harness/analysis-public-read-implementation-20260925.md

@@ -49,4 +49,15 @@ That initializer now supplies None in production too, preserving its ordinary
 facet-reading behavior. Source inventory found the other shared Parser initializers
 in language.rs and mixed.rs already coherent; language::legacy uses its own
 separate Parser type. No API, test or runtime policy changed. The failed build
-record remains preserved; no compiler was run for this repair by the worker.
+record remains preserved; no compiler was run for this repair by the worker.
+## Non-test integration result and warning cleanup
+
+Parent's actual non-test integration suite at 8555e417 passed all ten tests with
+the independent complete-model and diagnostic assertions unchanged. Compilation
+reported an unused Budget::limits observer and a redundant private language self
+import shadowing the integration helper's public glob export. The observer is
+now cfg(test), matching all real callers; the integration import drops only self.
+No semantic implementation, policy, fixture or expected result changed. Parent
+explicitly authorized that one test import-line edit after its independent worker
+finished. This is warning cleanup, not a claim that later lint/full/doctest gates
+already passed. No compiler was run by this worker.