fix(observability-sdk): require whitespace after HTTP verb in span filter

The excludeHttpRequests preset matched any word boundary after the
HTTP verb, so user spans like 'post-process' or 'delete-account' were
silently dropped from export. Require whitespace or end-of-string
after the verb instead, matching the OTel HTTP instrumentation shape.

Fixes langwatch#7413

Author: feiiiiii5

sdks/typescript/src/observability-sdk/exporters/__tests__/trace-filters.test.ts

@@ -282,6 +282,19 @@ describe("trace-filters", () => {
       expect(isHttpRequestSpan(createMockSpan("GETAWAY", "http"))).toBe(false);
       expect(isHttpRequestSpan(createMockSpan("GETTING", "http"))).toBe(false);
     });
+
+    it("requires whitespace or end-of-string after the verb, not any word boundary", () => {
+      // Hyphen, dot, slash etc. are word boundaries but not OTel HTTP span shapes.
+      expect(isHttpRequestSpan(createMockSpan("post-process", "custom"))).toBe(false);
+      expect(isHttpRequestSpan(createMockSpan("get-user-profile", "custom"))).toBe(false);
+      expect(isHttpRequestSpan(createMockSpan("delete-account", "custom"))).toBe(false);
+      expect(isHttpRequestSpan(createMockSpan("patch-config", "custom"))).toBe(false);
+      expect(isHttpRequestSpan(createMockSpan("head-request-handler", "custom"))).toBe(false);
+      expect(isHttpRequestSpan(createMockSpan("options-resolver", "custom"))).toBe(false);
+      expect(isHttpRequestSpan(createMockSpan("put-record.v2", "custom"))).toBe(false);
+      // Bare verb at end-of-string is still a valid OTel shape.
+      expect(isHttpRequestSpan(createMockSpan("POST", "http"))).toBe(true);
+    });
   });
 
   describe("applyPreset", () => {
@@ -456,4 +469,3 @@ describe("trace-filters", () => {
     });
   });
 });
-

sdks/typescript/src/observability-sdk/exporters/trace-filters.ts

@@ -253,6 +253,8 @@ export function isVercelAiSpan(span: ReadableSpan): boolean {
  */
 export function isHttpRequestSpan(span: ReadableSpan): boolean {
   const name = span.name ?? "";
-  const verbMatch = /^(GET|POST|PUT|DELETE|PATCH|OPTIONS|HEAD)\b/i.test(name);
+  const verbMatch = /^(GET|POST|PUT|DELETE|PATCH|OPTIONS|HEAD)(\s|$)/i.test(
+    name
+  );
   return verbMatch;
 }