chore: improve linting configuration and dev tooling

.devcontainer/post_create.sh

@@ -9,5 +9,7 @@ mise trust .
 
 mise install
 
+mise exec -- go mod download
+
 mise exec -- go install -v golang.org/x/tools/gopls@latest
 mise exec -- go install -v github.com/go-delve/delve/cmd/dlv@latest

.github/workflows/pr-check.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   check:
-    name: Lint & Test
+    name: Check
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -21,5 +21,5 @@ jobs:
       - name: Download Go dependencies
         run: go mod download
 
-      - name: Run check (lint + test)
-        run: make check
+      - name: Run check
+        run: make check NEW_FROM_REV=origin/${{ github.base_ref }}

.golangci.yaml

@@ -5,9 +5,7 @@ run:
   timeout: 5m
 
 issues:
-  new: true
   whole-files: true
-  new-from-rev: HEAD~
   max-same-issues: 50
 
 severity:

AGENTS.md

@@ -26,7 +26,7 @@ make lint
 make fix
 # golangci-lint run -v --fix ./...
 
-# Run lint + test together
+# Run all checks
 make check
 ```
 

Makefile

@@ -1,10 +1,16 @@
+NEW_FROM_REV ?= HEAD
+
 fix:
-	golangci-lint run -v --fix ./...
+	go mod tidy
+	golangci-lint run -v --new-from-rev=$(NEW_FROM_REV) --fix ./...
 
 lint:
-	golangci-lint run -v ./...
+	golangci-lint run -v --new-from-rev=$(NEW_FROM_REV) ./...
 
 test:
 	go test -v -race -failfast ./...
 
-check: lint test
+check-tidy:
+	go mod tidy -diff
+
+check: check-tidy lint test