fix: update Go version to 1.25, fix Docker build issues

- Update Dockerfile golang image from 1.23 to 1.25 (matches go.mod)
- Add tzdata package for timezone support in scratch image
- Use npm install --legacy-peer-deps for web frontend build
- Update CI/release workflows to use Go 1.25

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

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.23"
+          go-version: "1.25"
 
       - uses: golangci/golangci-lint-action@v6
         with:
@@ -27,7 +27,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.23"
+          go-version: "1.25"
 
       - uses: actions/setup-node@v4
         with:
@@ -55,7 +55,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.23"
+          go-version: "1.25"
 
       - name: Verify binary builds
         run: CGO_ENABLED=0 go build -o /dev/null ./cmd/synapbus/

.github/workflows/release.yml

@@ -34,7 +34,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.23"
+          go-version: "1.25"
 
       - uses: actions/setup-node@v4
         with:

Dockerfile

@@ -2,12 +2,13 @@
 FROM node:20-alpine AS web-builder
 WORKDIR /app/web
 COPY web/package*.json ./
-RUN npm ci
+RUN npm install --legacy-peer-deps
 COPY web/ ./
 RUN npm run build
 
 # Stage 2: Build Go binary
-FROM golang:1.23-alpine AS go-builder
+FROM golang:1.25-alpine AS go-builder
+RUN apk add --no-cache tzdata
 WORKDIR /app
 COPY go.mod go.sum ./
 RUN go mod download