feat(minio): initial stable release v1.0.0 — Client interface, xerrors, GetObject, doc examples

Add Client interface with PutObject, GetObject, RemoveObject, PresignedGetObject, and
HandleError; Component now embeds Client with Native() as escape hatch for operations
not covered by the interface. Add xerrors dependency: HandleError maps minio-go error
codes to portable typed codes (NoSuchKey → ErrNotFound, AccessDenied →
ErrPermissionDenied, BucketAlreadyExists → ErrAlreadyExists, etc.). OnStop sets
c.mc = nil for lifecycle consistency. doc.go updated with launcher wiring, upload,
presigned URL, GetObject, and HandleError usage examples. API committed as stable.

What's included:
- Config with Endpoint, AccessKey, SecretKey, UseSSL, Bucket, Region (env-driven, embeddable)
- Transport field in Config for test injection (env:"-", nil uses minio-go default)
- Client interface: PutObject, GetObject, RemoveObject, PresignedGetObject, HandleError
- Component interface: launcher.Component + health.Checkable + Client + Native()
- New(logger, cfg) constructor for lifecycle registration via lc.Append
- Automatic bucket creation on OnStart if bucket does not exist
- Health check via BucketExists at LevelCritical priority
- HandleError: maps minio-go ErrorResponse codes to xerrors typed errors
- 21 unit tests using mock HTTP transport; no live server required

go.mod

@@ -0,0 +1,35 @@
+module code.nochebuena.dev/go/minio
+
+go 1.26.3
+
+require (
+	code.nochebuena.dev/go/health v1.0.1
+	code.nochebuena.dev/go/launcher v1.0.1
+	code.nochebuena.dev/go/logz v1.0.1
+	code.nochebuena.dev/go/xerrors v1.0.0
+	github.com/minio/minio-go/v7 v7.1.0
+)
+
+require (
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/go-ini/ini v1.67.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/klauspost/compress v1.18.2 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.11 // indirect
+	github.com/klauspost/crc32 v1.3.0 // indirect
+	github.com/minio/crc64nvme v1.1.1 // indirect
+	github.com/minio/md5-simd v1.1.2 // indirect
+	github.com/philhofer/fwd v1.2.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rs/xid v1.6.0 // indirect
+	github.com/tinylib/msgp v1.6.1 // indirect
+	github.com/zeebo/xxh3 v1.1.0 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/crypto v0.46.0 // indirect
+	golang.org/x/net v0.48.0 // indirect
+	golang.org/x/sys v0.39.0 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)