Update all documentation and CI to Go 1.25

Author: MimoJanra

.github/ISSUE_TEMPLATE/bug_report.md

@@ -38,7 +38,7 @@ Invalid configuration:
 
 ## Environment
 
-- Go version: (e.g., 1.24)
+- Go version: (e.g., 1.25)
 - confkit version: (e.g., v0.5.0)
 - Sources used: (e.g., FromEnv, FromYAML, FromVault)
 - OS: (Linux, macOS, Windows)

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: ["1.24", "1.25", "1.26"]
+        go-version: ["1.25", "1.26"]
     steps:
       - name: Checkout code
         uses: actions/checkout@v4

CONTRIBUTING.md

@@ -55,7 +55,7 @@ confkit/
 
 2. **Set up development environment**:
    ```bash
-   # Install required Go version (1.24+)
+   # Install required Go version (1.25+)
    go version
 
    # Install security tools (optional but recommended)

README.md

@@ -1,6 +1,6 @@
 # confkit
 
-[![Go Version](https://img.shields.io/badge/go-1.24%2B-blue)](https://golang.org/doc/devel/release)
+[![Go Version](https://img.shields.io/badge/go-1.25%2B-blue)](https://golang.org/doc/devel/release)
 [![Go Reference](https://pkg.go.dev/badge/github.com/MimoJanra/confkit.svg)](https://pkg.go.dev/github.com/MimoJanra/confkit)
 [![Tests](https://github.com/MimoJanra/confkit/actions/workflows/test.yml/badge.svg)](https://github.com/MimoJanra/confkit/actions/workflows/test.yml)
 [![codecov](https://codecov.io/gh/MimoJanra/confkit/branch/main/graph/badge.svg)](https://codecov.io/gh/MimoJanra/confkit)
@@ -77,7 +77,7 @@ if err != nil {
 }
 ```
 
-**Go 1.24.0+ · zero mandatory dependencies beyond yaml.v3 and go-toml/v2 · MIT**
+**Go 1.25.0+ · zero mandatory dependencies beyond yaml.v3 and go-toml/v2 · MIT**
 
 ---
 

docs/docs/getting-started.md

@@ -13,7 +13,7 @@ Install confkit and load your first configuration in 5 minutes.
 go get github.com/MimoJanra/confkit@latest
 ```
 
-**Requirements:** Go 1.24.0 or later
+**Requirements:** Go 1.25.0 or later
 
 ## Your First Config
 

docs/docs/installation.md

@@ -73,9 +73,9 @@ import "github.com/MimoJanra/confkit/aws"
 
 ## Minimum Go Version
 
-confkit requires **Go 1.24.0 or later**.
+confkit requires **Go 1.25.0 or later**.
 
-**Why Go 1.24.0?**
+**Why Go 1.25.0?**
 - Generics for type-safe `Load[T]` API
 - Improved `range` statement (iterate over integers and slices with range-only syntax)
 - Enhanced iteration semantics
@@ -89,8 +89,8 @@ go version
 If you have an older version, update it:
 
 ```bash
-go install golang.org/dl/go1.24@latest
-go1.24 download
+go install golang.org/dl/go1.25@latest
+go1.25 download
 ```
 
 ## Dependencies

docs/docs/migration-v0.10.md

@@ -166,7 +166,7 @@ Invalid configuration:
 
 ## Compatibility Notes
 
-- **Go version:** Requires Go 1.24.0+
+- **Go version:** Requires Go 1.25.0+
 - **Dependencies:** No new dependencies
 - **Submodules:** All submodules (Vault, Consul, AWS, etc.) updated to match
 - **Core API:** Only the return type changed; all methods remain the same

docs/recipes/env-only.md

@@ -105,7 +105,7 @@ go run main.go
 ### Dockerfile
 
 ```dockerfile
-FROM golang:1.24 AS builder
+FROM golang:1.25 AS builder
 WORKDIR /app
 COPY . .
 RUN go build -o app main.go

docs/recipes/yaml-env-overrides.md

@@ -132,7 +132,7 @@ go run main.go
 In a Dockerfile:
 
 ```dockerfile
-FROM golang:1.24 AS builder
+FROM golang:1.25 AS builder
 WORKDIR /app
 COPY . .
 RUN go build -o app main.go

llms-full.txt

@@ -22,7 +22,7 @@ confkit is a **production-ready typed configuration loader for Go services**. It
 
 - **v0.1–v0.5:** Feature-complete, stable, production-tested
 - **v0.6+:** Planned (config composition, advanced validation, Prometheus integration)
-- **Go version required:** 1.24.0+ (for generics)
+- **Go version required:** 1.25.0+ (for generics)
 - **License:** MIT
 
 ### 1.3 Getting Started with Examples
@@ -1154,7 +1154,7 @@ go get github.com/MimoJanra/confkit@latest
 **Dependencies:**
 - `gopkg.in/yaml.v3` — YAML parsing
 - `github.com/pelletier/go-toml/v2` — TOML parsing
-- Go 1.24.0+ (for generics)
+- Go 1.25.0+ (for generics)
 
 Binary size impact: ~15KB core library