feat(resolution): Gin/chi routes on group vars (any receiver, not just r/router)

The route regex matched only `(router|r|mux|app|e).METHOD(...)`, but real Gin/chi
apps route on GROUP variables — `v1.GET`, `PublicGroup.GET`, `userRouter.POST` —
so group-routed apps connected almost nothing: gin-vue-admin had 4 routes for 625
files. Broaden the receiver to ANY identifier; the verb + string-path + handler-arg
gates keep it route-specific (e.g. `http.Get(url)` has no handler arg, so it's
excluded).

Validated: gin-vue-admin 4→259 routes, 257 resolve precisely (POST createInfo→
CreateInfo, GET getInfoList→GetInfoList); realworld stable 24→25 (no regression);
no garbage (257/259 resolve, not false positives), node count proportional. gitness
(chi, custom handlers) is a residual (26/321). Inline `func(c *gin.Context){...}`
handlers still lose their body (anonymous, like Express was) — separate residual.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/resolution/frameworks/go.ts

@@ -87,9 +87,12 @@ export const goResolver: FrameworkResolver = {
     const now = Date.now();
     const safe = stripCommentsForRegex(content, 'go');
 
-    // (router|r|mux|app).METHOD("/path", handler)
-    // Handles Gin (GET/POST/...), Chi (Get/Post/...), net/http (HandleFunc/Handle).
-    const routeRegex = /\b(?:router|r|mux|app|e)\.(GET|POST|PUT|PATCH|DELETE|OPTIONS|HEAD|Get|Post|Put|Patch|Delete|Handle|HandleFunc)\s*\(\s*"([^"]+)"\s*,\s*([^)]+)\)/g;
+    // <anyVar>.METHOD("/path", handler) — Gin (GET/POST/...), Chi (Get/Post/...),
+    // net/http (HandleFunc/Handle). The receiver is ANY identifier, not just
+    // router|r|mux|app|e: real apps route on GROUP vars (`v1.GET`, `PublicGroup.GET`,
+    // `userRouter.POST`), which the fixed name list missed (gin-vue-admin: 4 routes
+    // for 625 files). The verb + string-path + handler-arg gates keep it route-specific.
+    const routeRegex = /\b\w+\.(GET|POST|PUT|PATCH|DELETE|OPTIONS|HEAD|Get|Post|Put|Patch|Delete|Handle|HandleFunc)\s*\(\s*"([^"]+)"\s*,\s*([^)]+)\)/g;
     let match: RegExpExecArray | null;
     while ((match = routeRegex.exec(safe)) !== null) {
       const [, rawMethod, routePath, handlerExpr] = match;