chore(release): prepare for v0.4.0 (#100)

## [0.4.0] - 2026-04-17

### 🚀 Features

- Auto-enable path-style addressing when a custom endpoint is set (#99)

<!-- generated by git-cliff -->

---

**Note:** Please use **Squash Merge** when merging this PR.

Reviewed-on: #100
Co-authored-by: Unbound Releaser <releaser@unbound.se>
Co-committed-by: Unbound Releaser <releaser@unbound.se>

.gitea/workflows/ci.yaml

@@ -0,0 +1,30 @@
+name: storage
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
+        with:
+          go-version: stable
+      - name: Run tests
+        run: go test -race -coverprofile=coverage.txt ./...
+
+  vulnerabilities:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
+        with:
+          go-version: stable
+      - name: Check vulnerabilities
+        run: |
+          go install golang.org/x/vuln/cmd/govulncheck@latest
+          govulncheck ./...

.gitea/workflows/pre-commit.yaml

@@ -0,0 +1,25 @@
+name: pre-commit
+permissions: read-all
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    env:
+      SKIP: no-commit-to-branch
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
+        with:
+          go-version: stable
+      - name: Install Go tools
+        run: go install golang.org/x/tools/cmd/goimports@latest
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.14'
+      - uses: pre-commit/action@v3.0.1

.gitea/workflows/release.yaml

@@ -0,0 +1,9 @@
+name: Release
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  release:
+    uses: unboundsoftware/shared-workflows/.gitea/workflows/Release.yml@main

.gitlab-ci.yml

@@ -1,38 +0,0 @@
-include:
-- template: 'Workflows/MergeRequest-Pipelines.gitlab-ci.yml'
-- project: unboundsoftware/ci-templates
-  file: Defaults.gitlab-ci.yml
-- project: unboundsoftware/ci-templates
-  file: Release.gitlab-ci.yml
-- project: unboundsoftware/ci-templates
-  file: Pre-Commit-Go.gitlab-ci.yml
-
-image: amd64/golang:1.25.5@sha256:ad03ba93327b8a6143b49373790b5d92c28067bdb814418509466122ee9c9e63
-
-stages:
-- deps
-- test
-
-deps:
-  stage: deps
-  script:
-  - go mod download
-
-test:
-  stage: test
-  dependencies:
-  - deps
-  script:
-  - CGO_ENABLED=1 go test -mod=readonly -race -coverprofile=coverage.txt -covermode=atomic -coverpkg=$(go list ./... | tr '\n' , | sed 's/,$//') ./...
-  - go tool cover -html=coverage.txt -o coverage.html
-  - go tool cover -func=coverage.txt
-  - curl -Os https://uploader.codecov.io/latest/linux/codecov
-  - chmod +x codecov
-  - ./codecov -t ${CODECOV_TOKEN} -R $CI_PROJECT_DIR -C $CI_COMMIT_SHA -r $CI_PROJECT_PATH
-
-vulnerabilities:
-  stage: test
-  image: amd64/golang:1.25.5@sha256:ad03ba93327b8a6143b49373790b5d92c28067bdb814418509466122ee9c9e63
-  script:
-  - go install golang.org/x/vuln/cmd/govulncheck@latest
-  - govulncheck ./...

.pre-commit-config.yaml

@@ -10,15 +10,8 @@ repos:
     args:
     - --allow-multiple-documents
   - id: check-added-large-files
-- repo: https://gitlab.com/devopshq/gitlab-ci-linter
-  rev: v1.0.6
-  hooks:
-  - id: gitlab-ci-linter
-    args:
-    - --project
-    - unboundsoftware/storage
 - repo: https://github.com/alessandrojcm/commitlint-pre-commit-hook
-  rev: v9.23.0
+  rev: v9.24.0
   hooks:
   - id: commitlint
     stages: [ commit-msg ]
@@ -30,17 +23,17 @@ repos:
   - id: go-imports
     args:
     - -local
-    - gitlab.com/unboundsoftware/storage
+    - gitea.unbound.se/unboundsoftware/storage
 - repo: https://github.com/lietu/go-pre-commit
   rev: v1.0.0
   hooks:
   - id: go-test
   - id: gofumpt
 - repo: https://github.com/golangci/golangci-lint
-  rev: v2.7.2
+  rev: v2.11.4
   hooks:
   - id: golangci-lint-full
 - repo: https://github.com/gitleaks/gitleaks
-  rev: v8.30.0
+  rev: v8.30.1
   hooks:
   - id: gitleaks

.version

@@ -1 +1,3 @@
-{"version":"v0.0.3"}
+{
+  "version": "v0.4.0"
+}

CHANGELOG.md

@@ -2,6 +2,130 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.4.0] - 2026-04-17
+
+### 🚀 Features
+
+- Auto-enable path-style addressing when a custom endpoint is set (#99)
+
+## [0.3.0] - 2026-04-16
+
+### 🚀 Features
+
+- Add PresignInlineURL method for inline content display (#97)
+
+## [0.2.0] - 2026-04-16
+
+### 🚀 Features
+
+- Add PresignURL method for existing objects (#95)
+
+### 🐛 Bug Fixes
+
+- *(deps)* Update aws-sdk-go-v2 monorepo (#92)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#93)
+
+## [0.1.4] - 2026-04-02
+
+### 🐛 Bug Fixes
+
+- *(deps)* Update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.97.0 (#80)
+- *(deps)* Update module github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager to v0.1.9 (#82)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#83)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#87)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#88)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#90)
+
+### ⚙️ Miscellaneous Tasks
+
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.11.2 (#74)
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.11.3 (#76)
+- *(deps)* Update pre-commit hook gitleaks/gitleaks to v8.30.1 (#78)
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.11.4 (#85)
+
+## [0.1.3] - 2026-03-06
+
+### 🐛 Bug Fixes
+
+- *(deps)* Update aws-sdk-go-v2 monorepo (#60)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#62)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#64)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#66)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#68)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#70)
+
+### ⚙️ Miscellaneous Tasks
+
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.9.0 (#56)
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.10.1 (#58)
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.11.1 (#72)
+
+## [0.1.2] - 2026-02-06
+
+### 🐛 Bug Fixes
+
+- *(deps)* Update aws-sdk-go-v2 monorepo (#49)
+- *(deps)* Update module github.com/aws/aws-sdk-go-v2/feature/s3/manager to v1.21.0 (#51)
+- *(deps)* Update aws-sdk-go-v2 monorepo (#53)
+- *(deps)* Update module github.com/aws/aws-sdk-go-v2/feature/s3/manager to v1.22.0 (#54)
+
+### 🚜 Refactor
+
+- Migrate from deprecated s3/manager to s3/transfermanager
+
+### ⚙️ Miscellaneous Tasks
+
+- *(deps)* Update pre-commit hook alessandrojcm/commitlint-pre-commit-hook to v9.24.0 (#50)
+
+## [0.1.1] - 2026-01-09
+
+### ⚙️ Miscellaneous Tasks
+
+- *(deps)* Update actions/setup-python action to v6
+- Migrate module path to gitea.unbound.se
+
+## [0.1.0] - 2026-01-09
+
+### 🚀 Features
+
+- Add Gitea Actions workflow
+
+### 🐛 Bug Fixes
+
+- *(deps)* Update aws-sdk-go-v2 monorepo
+- *(deps)* Update aws-sdk-go-v2 monorepo
+- *(deps)* Update module github.com/aws/aws-sdk-go-v2/feature/s3/manager to v1.20.10
+- *(deps)* Update aws-sdk-go-v2 monorepo
+- *(deps)* Update aws-sdk-go-v2 monorepo
+- *(deps)* Update aws-sdk-go-v2 monorepo
+- *(deps)* Update aws-sdk-go-v2 monorepo
+- *(deps)* Update aws-sdk-go-v2 monorepo
+- *(deps)* Update aws-sdk-go-v2 monorepo
+- *(deps)* Update module github.com/aws/aws-sdk-go-v2/feature/s3/manager to v1.20.17
+- *(deps)* Update module github.com/aws/aws-sdk-go-v2/feature/s3/manager to v1.20.18
+
+### 📚 Documentation
+
+- Add CLAUDE.md for Claude Code integration
+
+### ⚙️ Miscellaneous Tasks
+
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.6.2
+- *(deps)* Update golang:1.25.4 docker digest to efe81fa
+- *(deps)* Update pre-commit hook gitleaks/gitleaks to v8.29.1
+- *(deps)* Update pre-commit hook gitleaks/gitleaks to v8.30.0
+- *(deps)* Update golang docker tag to v1.25.5
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.7.0
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.7.1
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.7.2
+- *(deps)* Update golang:1.25.5 docker digest to 0c27bcf
+- *(deps)* Update golang:1.25.5 docker digest to ad03ba9
+- *(deps)* Update actions/checkout action to v6
+- *(deps)* Update actions/setup-go action to v6
+- *(deps)* Update pre-commit hook golangci/golangci-lint to v2.8.0
+- Migrate from GitLab to Gitea
+- Add pre-commit and release workflows
+
 ## [0.0.3] - 2025-11-13
 
 ### 🐛 Bug Fixes

CLAUDE.md

@@ -1,41 +1,43 @@
 # storage
 
-Shared Go library for AWS S3 storage operations.
+Standalone Go library for AWS S3 storage operations.
 
-## Shared Documentation
+**Note:** This is an independent library, not part of the Shiny ecosystem, though it is currently only used by Shiny services.
 
-@../docs/claude/architecture.md
+## Purpose
-@../docs/claude/go-services.md
-@../docs/claude/conventions.md
-
-## Library Information
-
-### Purpose
 
 Provides standardized S3 object storage utilities with presigned URL generation. Used by services that need to store and serve files (PDFs, images, etc.).
 
-### Usage
+## Usage
 
 ```go
-import "gitlab.com/unboundsoftware/shiny/storage"
+import "gitea.unbound.se/unboundsoftware/storage"
 
-// Create storage with automatic AWS config
+// Option 1: Managed uploads (multipart, 5MB part size) - loads AWS config automatically
 s3Storage, err := storage.New("my-bucket")
 
+// Option 2: Direct uploads with custom AWS config
+cfg, _ := config.LoadDefaultConfig(context.Background())
+s3Storage := storage.NewS3(cfg, "my-bucket")
+
 // Upload and get presigned URL (15-minute expiration)
 url, err := s3Storage.Store("path/to/file.pdf", reader, "application/pdf")
 ```
 
-### Features
+## Features
 
-- **Managed uploads** - For large files with multipart upload
+- **Managed uploads** (`New`) - Uses upload manager with 5MB multipart chunks for large files
-- **Direct uploads** - For smaller files or custom config
+- **Direct uploads** (`NewS3`) - Uses PutObject directly, allows custom AWS config
 - **Presigned URLs** - 15-minute expiration for secure access
-- **Configurable part size** - For multipart upload optimization
 
-### Configuration
+## Configuration
 
 Uses AWS SDK v2, loading config from:
 - Environment variables (`AWS_REGION`, `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`)
 - Shared config files (`~/.aws/config`, `~/.aws/credentials`)
 - IAM roles (on AWS infrastructure)
+
+## Development
+
+- Go 1.23+
+- Run tests: `go test ./...`

README.md

@@ -14,7 +14,7 @@ Shared storage utilities for AWS S3.
 ### Using the Upload Manager (recommended for large files)
 
 ```go
-import "gitlab.com/unboundsoftware/storage"
+import "gitea.unbound.se/unboundsoftware/storage"
 
 // Create storage with automatic AWS config loading
 s3Storage, err := storage.New("my-bucket")
@@ -31,7 +31,7 @@ url, err := s3Storage.Store("path/to/file.pdf", fileReader, "application/pdf")
 ```go
 import (
     "github.com/aws/aws-sdk-go-v2/config"
-    "gitlab.com/unboundsoftware/storage"
+    "git.unbound.se/unboundsoftware/storage"
 )
 
 // Load custom AWS config

go.mod

@@ -1,29 +1,29 @@
-module gitlab.com/unboundsoftware/storage
+module gitea.unbound.se/unboundsoftware/storage
 
-go 1.23
+go 1.24
 
 require (
-	github.com/aws/aws-sdk-go-v2 v1.41.0
+	github.com/aws/aws-sdk-go-v2 v1.41.5
-	github.com/aws/aws-sdk-go-v2/config v1.32.6
+	github.com/aws/aws-sdk-go-v2/config v1.32.14
-	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.20.18
+	github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager v0.1.15
-	github.com/aws/aws-sdk-go-v2/service/s3 v1.95.0
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.99.0
 )
 
 require (
-	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.4 // indirect
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.8 // indirect
-	github.com/aws/aws-sdk-go-v2/credentials v1.19.6 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.19.14 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.16 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.21 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.16 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.21 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.16 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.21 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.4 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.6 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.16 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.22 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.7 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.7 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.13 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.16 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.21 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.16 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.21 // indirect
-	github.com/aws/aws-sdk-go-v2/service/signin v1.0.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/signin v1.0.9 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.30.8 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.30.15 // indirect
-	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.12 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.19 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.41.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.41.10 // indirect
-	github.com/aws/smithy-go v1.24.0 // indirect
+	github.com/aws/smithy-go v1.24.2 // indirect
 )

go.sum

@@ -1,40 +1,40 @@
-github.com/aws/aws-sdk-go-v2 v1.41.0 h1:tNvqh1s+v0vFYdA1xq0aOJH+Y5cRyZ5upu6roPgPKd4=
+github.com/aws/aws-sdk-go-v2 v1.41.5 h1:dj5kopbwUsVUVFgO4Fi5BIT3t4WyqIDjGKCangnV/yY=
-github.com/aws/aws-sdk-go-v2 v1.41.0/go.mod h1:MayyLB8y+buD9hZqkCW3kX1AKq07Y5pXxtgB+rRFhz0=
+github.com/aws/aws-sdk-go-v2 v1.41.5/go.mod h1:mwsPRE8ceUUpiTgF7QmQIJ7lgsKUPQOUl3o72QBrE1o=
-github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.4 h1:489krEF9xIGkOaaX3CE/Be2uWjiXrkCH6gUX+bZA/BU=
+github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.8 h1:eBMB84YGghSocM7PsjmmPffTa+1FBUeNvGvFou6V/4o=
-github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.4/go.mod h1:IOAPF6oT9KCsceNTvvYMNHy0+kMF8akOjeDvPENWxp4=
+github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.8/go.mod h1:lyw7GFp3qENLh7kwzf7iMzAxDn+NzjXEAGjKS2UOKqI=
-github.com/aws/aws-sdk-go-v2/config v1.32.6 h1:hFLBGUKjmLAekvi1evLi5hVvFQtSo3GYwi+Bx4lpJf8=
+github.com/aws/aws-sdk-go-v2/config v1.32.14 h1:opVIRo/ZbbI8OIqSOKmpFaY7IwfFUOCCXBsUpJOwDdI=
-github.com/aws/aws-sdk-go-v2/config v1.32.6/go.mod h1:lcUL/gcd8WyjCrMnxez5OXkO3/rwcNmvfno62tnXNcI=
+github.com/aws/aws-sdk-go-v2/config v1.32.14/go.mod h1:U4/V0uKxh0Tl5sxmCBZ3AecYny4UNlVmObYjKuuaiOo=
-github.com/aws/aws-sdk-go-v2/credentials v1.19.6 h1:F9vWao2TwjV2MyiyVS+duza0NIRtAslgLUM0vTA1ZaE=
+github.com/aws/aws-sdk-go-v2/credentials v1.19.14 h1:n+UcGWAIZHkXzYt87uMFBv/l8THYELoX6gVcUvgl6fI=
-github.com/aws/aws-sdk-go-v2/credentials v1.19.6/go.mod h1:SgHzKjEVsdQr6Opor0ihgWtkWdfRAIwxYzSJ8O85VHY=
+github.com/aws/aws-sdk-go-v2/credentials v1.19.14/go.mod h1:cJKuyWB59Mqi0jM3nFYQRmnHVQIcgoxjEMAbLkpr62w=
-github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.16 h1:80+uETIWS1BqjnN9uJ0dBUaETh+P1XwFy5vwHwK5r9k=
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-github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.16/go.mod h1:wOOsYuxYuB/7FlnVtzeBYRcjSRtQpAW0hCP7tIULMwo=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.21/go.mod h1:YWNWJQNjKigKY1RHVJCuupeWDrrHjRqHm0N9rdrWzYI=
-github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.20.18 h1:9vWXHtaepwoAl/UuKzxwgOoJDXPCC3hvgNMfcmdS2Tk=
+github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager v0.1.15 h1:92MfpwB6KjsPIEq9g3DniRPxOe92ew5hUz1h8W8cX7E=
-github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.20.18/go.mod h1:sKuUZ+MwUTuJbYvZ8pK0x10LvgcJK3Y4rmh63YBekwk=
+github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager v0.1.15/go.mod h1:7O129SmOn4acM++3oVfTLAeHmNOsj0y7AA7zmbgnGOk=
-github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.16 h1:rgGwPzb82iBYSvHMHXc8h9mRoOUBZIGFgKb9qniaZZc=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.21 h1:Rgg6wvjjtX8bNHcvi9OnXWwcE0a2vGpbwmtICOsvcf4=
-github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.16/go.mod h1:L/UxsGeKpGoIj6DxfhOWHWQ/kGKcd4I1VncE4++IyKA=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.21/go.mod h1:A/kJFst/nm//cyqonihbdpQZwiUhhzpqTsdbhDdRF9c=
-github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.16 h1:1jtGzuV7c82xnqOVfx2F0xmJcOw5374L7N6juGW6x6U=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.21 h1:PEgGVtPoB6NTpPrBgqSE5hE/o47Ij9qk/SEZFbUOe9A=
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s3.go

@@ -3,18 +3,32 @@ package storage
 import (
 	"context"
 	"io"
+	"os"
 	"time"
 
 	"github.com/aws/aws-sdk-go-v2/aws"
 	v4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
 	"github.com/aws/aws-sdk-go-v2/config"
-	"github.com/aws/aws-sdk-go-v2/feature/s3/manager"
+	"github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
 )
 
-// Uploader is the interface for uploading objects to S3 using the upload manager
+// s3ClientOptions returns the per-client overrides applied to every S3 client
+// constructed by this package. When the AWS_ENDPOINT_URL_S3 (or
+// AWS_ENDPOINT_URL) env var is set — typically because the runtime is
+// pointing at a local MinIO/S3-compatible endpoint — path-style addressing
+// is enabled so requests look like `http://host:9000/bucket/key` instead of
+// `http://bucket.host:9000/key`. Production deployments leave those vars
+// unset and continue talking to real S3 with virtual-hosted style.
+func s3ClientOptions(o *s3.Options) {
+	if os.Getenv("AWS_ENDPOINT_URL_S3") != "" || os.Getenv("AWS_ENDPOINT_URL") != "" {
+		o.UsePathStyle = true
+	}
+}
+
+// Uploader is the interface for uploading objects to S3 using the transfer manager
 type Uploader interface {
-	Upload(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error)
+	UploadObject(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error)
 }
 
 // DirectUploader is the interface for uploading objects directly to S3
@@ -45,7 +59,7 @@ func (s *S3) Store(path string, content io.Reader, contentType string) (string,
 }
 
 func (s *S3) storeWithManager(path string, content io.Reader, contentType string) (string, error) {
-	out, err := s.svc.Upload(context.Background(), &s3.PutObjectInput{
+	out, err := s.svc.UploadObject(context.Background(), &transfermanager.UploadObjectInput{
 		Bucket: aws.String(s.bucket),
 		Key:    aws.String(path),
 		Body:   content,
@@ -92,6 +106,38 @@ func (s *S3) storeWithDirectUpload(path string, content io.Reader, contentType s
 	return req.URL, nil
 }
 
+// PresignURL generates a presigned download URL for an existing object.
+// The URL is valid for 15 minutes.
+func (s *S3) PresignURL(ctx context.Context, key string) (string, error) {
+	req, err := s.presigner.PresignGetObject(ctx, &s3.GetObjectInput{
+		Bucket: aws.String(s.bucket),
+		Key:    aws.String(key),
+	}, s3.WithPresignExpires(15*time.Minute))
+	if err != nil {
+		return "", err
+	}
+	return req.URL, nil
+}
+
+// PresignInlineURL generates a presigned URL that tells the browser to display
+// the content inline rather than triggering a download. The URL is valid for
+// 15 minutes.
+func (s *S3) PresignInlineURL(ctx context.Context, key string, contentType string) (string, error) {
+	input := &s3.GetObjectInput{
+		Bucket:                     aws.String(s.bucket),
+		Key:                        aws.String(key),
+		ResponseContentDisposition: aws.String("inline"),
+	}
+	if contentType != "" {
+		input.ResponseContentType = aws.String(contentType)
+	}
+	req, err := s.presigner.PresignGetObject(ctx, input, s3.WithPresignExpires(15*time.Minute))
+	if err != nil {
+		return "", err
+	}
+	return req.URL, nil
+}
+
 // New creates a new S3 storage instance using the upload manager
 // This loads AWS config from the default locations and is suitable for most use cases
 func New(bucket string) (*S3, error) {
@@ -99,9 +145,9 @@ func New(bucket string) (*S3, error) {
 	if err != nil {
 		return nil, err
 	}
-	client := s3.NewFromConfig(cfg)
+	client := s3.NewFromConfig(cfg, s3ClientOptions)
-	uploader := manager.NewUploader(client, func(u *manager.Uploader) {
+	uploader := transfermanager.New(client, func(o *transfermanager.Options) {
-		u.PartSize = 5 * 1024 * 1024
+		o.PartSizeBytes = 5 * 1024 * 1024
 	})
 	presignClient := s3.NewPresignClient(client)
 	return &S3{
@@ -115,7 +161,7 @@ func New(bucket string) (*S3, error) {
 // NewS3 creates a new S3 storage instance using direct PutObject
 // This is useful when you want more control over the AWS configuration
 func NewS3(cfg aws.Config, bucket string) *S3 {
-	client := s3.NewFromConfig(cfg)
+	client := s3.NewFromConfig(cfg, s3ClientOptions)
 	return &S3{
 		bucket:          bucket,
 		directSvc:       client,

s3_test.go

@@ -10,17 +10,17 @@ import (
 
 	"github.com/aws/aws-sdk-go-v2/aws"
 	v4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
-	"github.com/aws/aws-sdk-go-v2/feature/s3/manager"
+	"github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
 )
 
 // Mock implementations for testing
 
 type mockUploader struct {
-	uploadFunc func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error)
+	uploadFunc func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error)
 }
 
-func (m *mockUploader) Upload(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
+func (m *mockUploader) UploadObject(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
 	return m.uploadFunc(ctx, input, opts...)
 }
 
@@ -40,6 +40,35 @@ func (m *mockPresigner) PresignGetObject(ctx context.Context, params *s3.GetObje
 	return m.presignFunc(ctx, params, optFns...)
 }
 
+// Test path-style toggle
+
+func TestS3ClientOptions_PathStyleTogglesOnCustomEndpoint(t *testing.T) {
+	cases := []struct {
+		name     string
+		envVar   string
+		value    string
+		expected bool
+	}{
+		{name: "no env var → virtual-hosted", envVar: "", expected: false},
+		{name: "AWS_ENDPOINT_URL_S3 set → path-style", envVar: "AWS_ENDPOINT_URL_S3", value: "http://minio:9000", expected: true},
+		{name: "AWS_ENDPOINT_URL set → path-style", envVar: "AWS_ENDPOINT_URL", value: "http://minio:9000", expected: true},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Setenv("AWS_ENDPOINT_URL", "")
+			t.Setenv("AWS_ENDPOINT_URL_S3", "")
+			if tc.envVar != "" {
+				t.Setenv(tc.envVar, tc.value)
+			}
+			opts := s3.Options{}
+			s3ClientOptions(&opts)
+			if opts.UsePathStyle != tc.expected {
+				t.Fatalf("UsePathStyle = %v, want %v", opts.UsePathStyle, tc.expected)
+			}
+		})
+	}
+}
+
 // Test NewS3 constructor
 
 func TestNewS3(t *testing.T) {
@@ -81,7 +110,7 @@ func TestStore_WithUploadManager_Success(t *testing.T) {
 	expectedURL := "https://s3.amazonaws.com/test-bucket/path/to/file.pdf?presigned=true"
 
 	mockUploader := &mockUploader{
-		uploadFunc: func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
+		uploadFunc: func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
 			// Verify input parameters
 			if *input.Bucket != testBucket {
 				t.Errorf("Expected bucket %s, got %s", testBucket, *input.Bucket)
@@ -99,7 +128,7 @@ func TestStore_WithUploadManager_Success(t *testing.T) {
 				t.Errorf("Expected content %s, got %s", testContent, string(body))
 			}
 
-			return &manager.UploadOutput{
+			return &transfermanager.UploadObjectOutput{
 				Key: aws.String(testPath),
 			}, nil
 		},
@@ -149,7 +178,7 @@ func TestStore_WithUploadManager_UploadError(t *testing.T) {
 	expectedError := errors.New("upload failed")
 
 	mockUploader := &mockUploader{
-		uploadFunc: func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
+		uploadFunc: func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
 			return nil, expectedError
 		},
 	}
@@ -191,8 +220,8 @@ func TestStore_WithUploadManager_PresignError(t *testing.T) {
 	expectedError := errors.New("presign failed")
 
 	mockUploader := &mockUploader{
-		uploadFunc: func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
+		uploadFunc: func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
-			return &manager.UploadOutput{
+			return &transfermanager.UploadObjectOutput{
 				Key: aws.String(testPath),
 			}, nil
 		},
@@ -390,8 +419,8 @@ func TestStore_PresignExpiry(t *testing.T) {
 	var capturedExpiry time.Duration
 
 	mockUploader := &mockUploader{
-		uploadFunc: func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
+		uploadFunc: func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
-			return &manager.UploadOutput{Key: aws.String(testPath)}, nil
+			return &transfermanager.UploadObjectOutput{Key: aws.String(testPath)}, nil
 		},
 	}