docs: improve README clarity and add project roadmap

"we never used to have like so many emojis earlier and the look of the readme on github was really professional. can you please fix that"
"can you critique the readme"

- Remove emojis from features list and code examples for professional appearance
- Fix error handling in Quick Start example
- Add proper error checks for io.ReadAll
- Fix escaped newlines in printf statements (\\n to \n)
- Remove confusing SetEndpoint line from Quick Start
- Add ROADMAP.md with planned features through v1.0.0
- Update Contributing section to reference ROADMAP.md

Author: rhnvrm

README.md

@@ -7,16 +7,16 @@ in S3 buckets using REST API calls or Presigned URLs signed
 using AWS Signature Version 4.
 
 **Features:**
-- 🚀 **Simple, intuitive API** following Go idioms
-- 🪣 **Complete S3 operations** - Upload, Download, Delete, List, Details
-- 🔐 **AWS Signature Version 4** signing
-- 🌐 **Custom endpoint support** (MinIO, DigitalOcean Spaces, etc.)
-- 📋 **Simple List API** with pagination, prefix filtering, and delimiter grouping
-- 🔄 **Iterator-based ListAll** for memory-efficient large bucket iteration (Go 1.23+)
-- 🔗 **Presigned URL generation** for secure browser uploads/downloads
-- 🪪 **IAM credential support** for EC2 instances
-- ✅ **Comprehensive test coverage**
-- 🎯 **Zero dependencies** - uses only Go standard library
+- **Simple, intuitive API** following Go idioms
+- **Complete S3 operations** - Upload, Download, Delete, List, Details
+- **AWS Signature Version 4** signing
+- **Custom endpoint support** (MinIO, DigitalOcean Spaces, etc.)
+- **Simple List API** with pagination, prefix filtering, and delimiter grouping
+- **Iterator-based ListAll** for memory-efficient large bucket iteration (Go 1.23+)
+- **Presigned URL generation** for secure browser uploads/downloads
+- **IAM credential support** for EC2 instances
+- **Comprehensive test coverage**
+- **Zero dependencies** - uses only Go standard library
 
 ## Install
 
@@ -39,11 +39,11 @@ func main() {
     // Initialize S3 client
     s3 := simples3.New("us-east-1", "your-access-key", "your-secret-key")
 
-    // Use MinIO or other S3-compatible services
-    s3.SetEndpoint("https://s3.amazonaws.com")
-
     // Upload a file
-    file, _ := os.Open("my-file.txt")
+    file, err := os.Open("my-file.txt")
+    if err != nil {
+        log.Fatal(err)
+    }
     defer file.Close()
 
     resp, err := s3.FileUpload(simples3.UploadInput{
@@ -99,6 +99,9 @@ defer file.Close()
 
 // Read the content
 data, err := io.ReadAll(file)
+if err != nil {
+    log.Fatal(err)
+}
 ```
 
 #### Delete Files
@@ -159,12 +162,12 @@ if err != nil {
 
 // Process objects
 for _, obj := range result.Objects {
-    fmt.Printf("📄 %s (%d bytes)\n", obj.Key, obj.Size)
+    fmt.Printf("%s (%d bytes)\n", obj.Key, obj.Size)
 }
 
 // Process "directories" (common prefixes)
 for _, prefix := range result.CommonPrefixes {
-    fmt.Printf("📁 %s/\n", prefix)
+    fmt.Printf("%s/\n", prefix)
 }
 ```
 
@@ -180,7 +183,7 @@ seq, finish := s3.ListAll(simples3.ListInput{
 })
 
 for obj := range seq {
-    fmt.Printf("📄 %s (%d bytes)\n", obj.Key, obj.Size)
+    fmt.Printf("%s (%d bytes)\n", obj.Key, obj.Size)
 }
 
 // Check for any errors that occurred during iteration
@@ -231,9 +234,9 @@ func main() {
         log.Fatal(err)
     }
 
-    fmt.Printf("Total objects: %d\\n", len(allObjects))
+    fmt.Printf("Total objects: %d\n", len(allObjects))
     for _, obj := range allObjects {
-        fmt.Printf("- %s (%d bytes)\\n", obj.Key, obj.Size)
+        fmt.Printf("- %s (%d bytes)\n", obj.Key, obj.Size)
     }
 }
 ```
@@ -344,13 +347,7 @@ export AWS_S3_BUCKET="testbucket"
 
 ## Contributing
 
-We welcome contributions! Please:
-
-1. Fork the repository
-2. Create a feature branch
-3. Add tests for new functionality
-4. Ensure all tests pass: `just test-local`
-5. Submit a pull request
+Contributions welcome! Check [ROADMAP.md](ROADMAP.md) for planned features. Please add tests and ensure `just test-local` passes before submitting PRs.
 
 ## Author
 

ROADMAP.md

@@ -0,0 +1,195 @@
+# Project Roadmap
+
+## Current: v0.x (Pre-Stable)
+
+### Completed Features
+- File Upload (PUT via FilePut, POST multipart via FileUpload)
+- File Download (GetObject)
+- File Delete (DeleteObject)
+- File Details (HeadObject)
+- List Objects (ListObjectsV2) with pagination
+- ListAll iterator (Go 1.23+) for memory-efficient iteration
+- Presigned URLs (GET/PUT with expiry)
+- Upload policies for browser POST uploads
+- IAM Role Support (EC2 instances with IMDSv2)
+- IAM token auto-renewal
+- Custom Metadata
+- Custom Endpoints (MinIO, DigitalOcean Spaces, etc.)
+- Content-Disposition and ACL support
+- Zero dependencies (stdlib only)
+
+## v0.10.2 - Code Organization (Refactor)
+**Scope**: Internal restructuring, no API changes
+**Size**: Medium (refactor ~1064 LOC)
+
+Split simples3.go into logical modules:
+- [ ] `simples3.go` - Core (S3 struct, New(), config methods: SetEndpoint/SetToken/SetClient)
+- [ ] `iam.go` - IAM (fetchIMDSToken, fetchIAMData, NewUsingIAM, renewIAMToken, SetIAMData)
+- [ ] `object.go` - Object ops (FileUpload, FilePut, FileDownload, FileDelete, FileDetails)
+- [ ] `list.go` - List ops (List, ListAll)
+- [ ] `helpers.go` - Utils (encodePath, detectFileSize, getFirstString, getURL)
+- [ ] Ensure all tests pass after refactor
+
+**Why**: 1064-line file hard to navigate. Clean foundation before adding features.
+
+---
+
+## v0.11.0 - Bucket Operations
+**Scope**: Essential bucket management for CLI
+**Size**: Small (3 APIs, ~200 LOC)
+
+- [ ] ListBuckets
+- [ ] CreateBucket (with region support)
+- [ ] DeleteBucket
+
+**Why**: These 3 operations unblock CLI development. Minimal but complete.
+
+---
+
+## v0.12.0 - Object Operations (Copy & Batch Delete)
+**Scope**: Object manipulation for CLI mv/sync
+**Size**: Small (2 APIs, ~150 LOC)
+
+- [ ] CopyObject (within/across buckets)
+- [ ] DeleteObjects (batch delete up to 1000 objects)
+
+**Why**: CopyObject enables `mv` command. Batch delete improves performance.
+
+---
+
+## v0.13.0 - Multipart Upload
+**Scope**: Large file support
+**Size**: Large (5 APIs, ~400 LOC)
+
+- [ ] InitiateMultipartUpload
+- [ ] UploadPart (with retry logic)
+- [ ] CompleteMultipartUpload
+- [ ] AbortMultipartUpload
+- [ ] ListParts
+
+**Why**: Critical for large files. Enables resumable uploads.
+
+---
+
+## v0.14.0 - Server-Side Encryption
+**Scope**: Security basics
+**Size**: Small (~150 LOC)
+
+- [ ] SSE-S3 support (AES256)
+- [ ] SSE-KMS support (key ARN)
+- [ ] Encryption headers in Put/Upload/Copy
+
+**Why**: Security is table stakes. Simple to add to existing operations.
+
+---
+
+## v0.15.0 - Object Tagging
+**Scope**: Metadata management
+**Size**: Small (4 APIs, ~200 LOC)
+
+- [ ] PutObjectTagging
+- [ ] GetObjectTagging
+- [ ] DeleteObjectTagging
+- [ ] Tagging support in Put/Upload/Copy
+
+**Why**: Common requirement for organization/billing. Simple XML operations.
+
+---
+
+## v0.16.0 - Object Versioning
+**Scope**: Version control
+**Size**: Medium (5 APIs, ~300 LOC)
+
+- [ ] PutBucketVersioning
+- [ ] GetBucketVersioning
+- [ ] ListObjectVersions
+- [ ] GetObjectVersion
+- [ ] DeleteObjectVersion (with version ID)
+
+**Why**: Important for data safety. More complex due to version handling.
+
+---
+
+## v0.17.0 - ACLs & Lifecycle
+**Scope**: Advanced management
+**Size**: Medium (9 APIs, ~500 LOC)
+
+ACLs:
+- [ ] PutObjectAcl
+- [ ] GetObjectAcl
+- [ ] PutBucketAcl
+- [ ] GetBucketAcl
+
+Lifecycle:
+- [ ] PutBucketLifecycle
+- [ ] GetBucketLifecycle
+- [ ] DeleteBucketLifecycle
+
+**Why**: Grouped advanced features. Completes library API surface.
+
+---
+
+## v0.18.0 - CLI Complete
+**Scope**: Full-featured CLI with all library features
+**Size**: Large (~2000 LOC)
+
+CLI (`cmd/simples3/`):
+- [ ] Project structure (cobra or custom parser)
+- [ ] S3 URI parsing (`s3://bucket/key`)
+- [ ] Config (env vars: AWS_*, flags: --region/--profile)
+- [ ] AWS credentials file support (~/.aws/credentials)
+- [ ] Basic commands:
+  - [ ] ls (list buckets/objects)
+  - [ ] cp (upload/download, with multipart for large files)
+  - [ ] rm (delete single/batch)
+  - [ ] mb (make bucket)
+  - [ ] rb (remove bucket)
+  - [ ] mv (move/rename using copy+delete)
+  - [ ] presign (generate URL)
+  - [ ] sync (local ↔ S3 with diff algorithm)
+- [ ] Flags:
+  - [ ] --recursive (cp/rm)
+  - [ ] --sse/--sse-kms-key-id (encryption)
+  - [ ] --tags (tagging)
+  - [ ] --version-id (versioning)
+  - [ ] --acl (canned ACLs)
+  - [ ] --delete (sync)
+  - [ ] --exclude/--include (patterns)
+  - [ ] --json (output mode)
+  - [ ] --dry-run
+- [ ] Features:
+  - [ ] Progress indicators
+  - [ ] Parallel transfers
+  - [ ] Better error messages
+- [ ] Subcommands:
+  - [ ] acl get/set
+  - [ ] lifecycle get/set/delete
+  - [ ] tags get/set/delete
+
+**Why**: Library complete. Build full-featured CLI supporting all operations.
+
+---
+
+## v1.0.0 - Stable Release
+**Focus**: Production-ready stability
+**Size**: Documentation, tests, polish
+
+Library:
+- [ ] All tests passing with 80%+ coverage
+- [ ] API documentation complete
+- [ ] Performance benchmarks
+- [ ] Security audit of signing/crypto code
+
+CLI:
+- [ ] CLI tests with real/mocked S3
+- [ ] CLI documentation (man pages, --help)
+- [ ] Installation guides (brew, apt, etc.)
+- [ ] Shell completions (bash, zsh, fish)
+
+Release:
+- [ ] CHANGELOG.md complete
+- [ ] Migration guide from v0.x
+- [ ] Examples for all features
+- [ ] API stability guarantee
+
+**Why**: v1.0 = stability commitment. Library + CLI production-ready.