fix: add tools.go for goimports dependency and update Dockerfile to Go 1.26

- Add tools.go with //go:build tools tag to keep golang.org/x/telemetry
  in go.sum (prevents go mod tidy from pruning goimports's dependencies)
- Update Dockerfile-build from golang:1.24 to golang:1.26 to match
  the go directive in go.mod

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: aeneasr

.docker/Dockerfile-build

@@ -1,4 +1,4 @@
-FROM golang:1.24-alpine3.22 AS builder
+FROM golang:1.26-alpine3.22 AS builder
 
 RUN apk -U --no-cache add build-base git gcc bash
 

go.mod

@@ -44,6 +44,7 @@ require (
 	github.com/urfave/negroni v1.0.0
 	golang.org/x/oauth2 v0.35.0
 	golang.org/x/text v0.31.0
+	golang.org/x/tools v0.38.0
 	gopkg.in/yaml.v2 v2.4.0
 )
 
@@ -293,7 +294,7 @@ require (
 	golang.org/x/net v0.47.0 // indirect
 	golang.org/x/sync v0.18.0 // indirect
 	golang.org/x/sys v0.40.0 // indirect
-	golang.org/x/tools v0.38.0 // indirect
+	golang.org/x/telemetry v0.0.0-20251008203120-078029d740a8 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20251007200510-49b9836ed3ff // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20251007200510-49b9836ed3ff // indirect
 	google.golang.org/grpc v1.75.0 // indirect

go.sum

@@ -968,6 +968,8 @@ golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
 golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/telemetry v0.0.0-20251008203120-078029d740a8 h1:LvzTn0GQhWuvKH/kVRS3R3bVAsdQWI7hvfLHGgh9+lU=
+golang.org/x/telemetry v0.0.0-20251008203120-078029d740a8/go.mod h1:Pi4ztBfryZoJEkyFTI5/Ocsu2jXyDr6iSdgJiYE/uwE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=

tools.go

@@ -0,0 +1,7 @@
+//go:build tools
+
+package main
+
+import (
+	_ "golang.org/x/tools/cmd/goimports"
+)