fix(javascript): bound semantic unknown retention at projection

Admit unknowns before canonical construction and provenance interning. Offer independent per-file and application capacities through CLI, Evidence and the owned analysis worker, and reject over-allocation during streamed decoding.

Report examined omitted emission occurrences by family and reason without retaining discarded identities. Preserve omission-free graph identities and distinguish node truncation from overall partial coverage.

Fixes #4797

src/domain/javascript/javascriptSemanticFileProjection.ts

@@ -4,6 +4,7 @@ import type {
   JavaScriptSemanticGraphNode,
   JavaScriptSemanticGraphRelation,
   JavaScriptSemanticGraphUnknown,
+  JavaScriptSemanticUnknownOmission,
 } from "./javascriptSemanticGraphSchemas.js";
 
 /** File-local facts transported before binding them to the containing application graph. */
@@ -13,6 +14,13 @@ export interface JavaScriptSemanticFileProjection {
   readonly nodes: readonly JavaScriptSemanticGraphNode[];
   readonly relations: readonly JavaScriptSemanticGraphRelation[];
   readonly unknowns: readonly JavaScriptSemanticGraphUnknown[];
+  readonly omittedUnknownOccurrences?: readonly JavaScriptSemanticUnknownOmission[];
   readonly fingerprints: readonly JavaScriptSemanticFingerprint[];
-  readonly truncated: boolean;
+  readonly nodesTruncated: boolean;
+}
+
+/** Independent retained capacities offered to one source projection. */
+export interface JavaScriptSemanticProjectionCapacity {
+  readonly nodes: number;
+  readonly unknowns: number;
 }