fix: update Go version to 1.26.1 in multiple workflow files for consistency and security improvements

.github/skills/examples/gorm-scanner-ci-workflow.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.23'
+          go-version: "1.26.1"
 
       - name: Run GORM Security Scanner
         id: gorm-scan

.github/workflows/benchmark.yml

@@ -37,7 +37,8 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "1.26.1"
+
           cache-dependency-path: backend/go.sum
 
       - name: Run Benchmark

.github/workflows/codecov-upload.yml

@@ -47,7 +47,8 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "1.26.1"
+
           cache-dependency-path: backend/go.sum
 
       # SECURITY: Keep pull_request (not pull_request_target) for secret-bearing backend tests.

.github/workflows/e2e-tests-split.yml

@@ -144,7 +144,8 @@ jobs:
         if: steps.resolve-image.outputs.image_source == 'build'
         uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "1.26.1"
+
           cache: true
           cache-dependency-path: backend/go.sum
 

.github/workflows/quality-checks.yml

@@ -33,7 +33,8 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "1.26.1"
+
           cache-dependency-path: backend/go.sum
 
       - name: Run auth protection contract tests
@@ -139,7 +140,8 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "1.26.1"
+
           cache-dependency-path: backend/go.sum
 
       - name: Repo health check

.github/workflows/release-goreleaser.yml

@@ -47,7 +47,8 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6
         with:
-          go-version: ${{ env.GO_VERSION }}
+          go-version: "1.26.1"
+
           cache-dependency-path: backend/go.sum
 
       - name: Set up Node.js

docs/plans/archive/go_version_management_strategy.md

@@ -174,7 +174,8 @@ golangci-lint has version 2.8.1 built with go1.26.0
 ```yaml
 - uses: actions/setup-go@v6
   with:
-    go-version: ${{ env.GO_VERSION }}
+    go-version: "1.26.1"
+
     cache: true  # Caches Go modules and build artifacts
 ```
 

docs/plans/archive/nightly_branch_implementation.md

@@ -442,7 +442,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.23'
+          go-version: "1.26.1"
 
       - name: Set up Node.js
         uses: actions/setup-node@v4

docs/plans/proof-of-concept/test-backend-coverage.SKILL.md

@@ -364,7 +364,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: '1.23'
+          go-version: "1.26.1"
       - name: Run Backend Tests with Coverage
         run: .github/skills/scripts/skill-runner.sh test-backend-coverage
 ```