replace goweb with go-swagger for API

[wgerlach]

goweb is not maintained, go-swagger has some nice features

[wilke]

Goweb → Chi Router Migration Complete

The Goweb framework has been replaced with Chi (github.com/go-chi/chi/v5), a lightweight, stdlib-compatible router. Chi was chosen over go-swagger because the project needs a simple router replacement, not a full OpenAPI framework.

What Changed

Phase 1: Foundation Layer

• shock-server/responder/responder.go — All 5 response functions changed from (ctx context.Context) to (w http.ResponseWriter, r *http.Request). Replaced goweb codec with encoding/json.
• shock-server/util/util.go — ApiUrl() now takes *http.Request instead of goweb context.
• shock-server/request/request.go — AuthError() now takes (err, w, r) instead of goweb context.

Phase 2: Handler Conversion (15 files)
All handlers converted from goweb context signatures to standard (w http.ResponseWriter, r *http.Request):

• controller/node/ — node.go, single.go, multi.go, create.go, update.go, delete.go
• controller/node/acl/acl.go, controller/node/index/index.go, controller/preauth/preauth.go
• node/locations.go, node/restore.go, node/index.go
• location/location.go, types/types.go

Key conversions: ctx.PathValue("nid") → chi.URLParam(r, "nid"), ctx.HttpRequest() → r, ctx.HttpResponseWriter() → w

Phase 3: Router Setup

• Replaced mapRoutes() + goweb.DefaultHttpHandler() with newRouter() chi.Router
• Route registration via chi.HandleFunc, chi.Get, chi.Route, etc.
• Node CRUD via router.Route("/node", ...) with explicit method registration

Phase 4: Middleware

• requestLogger middleware replaces goweb.MapBefore/goweb.MapAfter
• corsMiddleware handles CORS headers globally and OPTIONS preflight, replacing ~10 scattered checks

Phase 5: Tests

• Rewrote responder and controller tests using httptest.NewRecorder and Chi test routers

Phase 6: Verification

• ✅ Binary compiles successfully (CGO_ENABLED=0)
• ✅ Zero goweb imports remain in shock-server/
• ✅ All 20 tests pass (responder: 9, controller/node: 3, util: 8)
• ✅ vendor/modules.txt generated for Go modules compatibility

Branch

feature/cache-s3-upload-ttl