refactor(javascript): break the semantic analysis import cycle (#8063)

* refactor(javascript): break the semantic analysis import cycle

Split shared semantic facts out of the analysis hub so projectors of
effects, evaluation, and identity no longer import one another in a cycle.

* refactor(javascript): share the import specifier reader

Read static imports in one module used by the boundary checker and both
cycle guards, so those rules cannot drift apart.

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Co-authored-by: Cursor Agent <cursoragent@cursor.com>

src/domain/javascript/javascriptRpcEndpoint.ts

@@ -0,0 +1,15 @@
+import type * as t from "@babel/types";
+
+/** One RPC operation or transport URL recovered from client-side syntax. */
+export interface JavaScriptRpcEndpoint {
+  readonly value: string;
+  readonly mechanism: string;
+}
+
+/** Feed every AST node in pre-order, then drain finish() for Source findings. */
+export interface JavaScriptRpcScan {
+  inspect(node: t.Node): JavaScriptRpcEndpoint | undefined;
+  finish(): Iterable<
+    (JavaScriptRpcEndpoint & { readonly node: t.Node }) | void
+  >;
+}