diff --git a/docs/GIT_PROTOCOL_GUIDE.md b/docs/GIT_PROTOCOL_GUIDE.md
new file mode 100644
index 00000000..40264aa6
--- /dev/null
+++ b/docs/GIT_PROTOCOL_GUIDE.md
@@ -0,0 +1,199 @@
+# Git Protocol Abstraction Design and Implementation
+
+## 1. Project Overview
+
+The git-internal library implements a transport layer abstraction for the Git smart protocol, separating HTTP and SSH protocol handling from monorepo business code and adapting to any business system through Trait interfaces.
+
+## 2. Architecture Design
+
+### 2.1 Layered Architecture
+
+```
+┌─────────────────────────────────────┐
+│     Business System Integration     │  ← Implement Trait interfaces
+├─────────────────────────────────────┤
+│     Transport Protocol Adapters     │  ← HTTP/SSH handlers
+├─────────────────────────────────────┤
+│     Git Smart Protocol Core         │  ← Protocol logic implementation
+├─────────────────────────────────────┤
+│     Pack File Processing Layer      │  ← Object packing/unpacking
+└─────────────────────────────────────┘
+```
+
+### 2.2 Core Abstraction Interfaces
+
+**RepositoryAccess Trait**
+
+- Provides storage layer abstraction, isolating business logic
+- Supports reference management, object access, and Pack operations
+- Can adapt to any storage backend (filesystem, database, etc.)
+
+**AuthenticationService Trait**
+
+- Unified authentication interface supporting HTTP and SSH
+- Can integrate with any authentication system (OAuth, JWT, public key, etc.)
+
+**GitProtocol Core**
+
+- Transport-agnostic protocol implementation
+- Unified info/refs, upload-pack, receive-pack interfaces
+
+## 3. Implementation Status
+
+### 3.1 Completed Features
+
+**Core Protocol**
+
+- Complete Git smart protocol v1 implementation
+- Reference advertisement and capability negotiation
+- upload-pack service (clone/fetch operations)
+- receive-pack service (push operations)
+- Pack file generation and parsing
+
+**Transport Layer**
+
+- HTTP transport adapter (request parsing, streaming responses)
+- SSH transport adapter (command parsing, authentication integration)
+- Transport protocol abstraction (unified interface)
+
+**Data Processing**
+
+- Side-band multiplexing
+- Progress reporting mechanism
+- Object parsing (blob, commit, tree)
+- Reference updates and validation
+
+**Authentication System**
+
+- HTTP authentication (header-based)
+- SSH authentication (public key verification)
+- Pluggable authentication architecture
+
+## 4. Module Organization
+
+```
+src/protocol/
+├── core.rs          # Main abstractions (Trait definitions, GitProtocol)
+├── http.rs          # HTTP transport adapter
+├── ssh.rs           # SSH transport adapter
+├── smart.rs         # Git smart protocol implementation
+├── pack.rs          # Pack generation and processing
+├── types.rs         # Protocol types and error definitions
+├── utils.rs         # Protocol utility functions
+└── mod.rs           # Module exports
+```
+
+## 5. HTTP Protocol Abstraction
+
+### 5.1 Design Features
+
+- Request path parsing and repository location
+- Standard Git HTTP content type handling
+- Streaming responses for large repository transfers
+- Error mapping to HTTP status codes
+
+### 5.2 Main Functions
+
+- `handle_info_refs`: Process reference query requests
+- `handle_upload_pack`: Process clone/fetch requests
+- `handle_receive_pack`: Process push requests
+- `authenticate_http`: HTTP authentication integration
+
+## 6. SSH Protocol Abstraction
+
+### 6.1 Design Features
+
+- Git command line parsing (git-upload-pack, git-receive-pack)
+- Repository path extraction and validation
+- Direct protocol mapping without HTTP overhead
+- Public key authentication integration
+
+### 6.2 Main Functions
+
+- Command parsing and dispatching
+- Repository path extraction
+- Protocol operation mapping
+- SSH authentication integration
+
+## 7. Trait Adaptation Solution
+
+### 7.1 Storage Adaptation
+
+Adapt any storage system through RepositoryAccess Trait:
+
+- Filesystem storage
+- Database storage
+- Cloud storage services
+- Distributed storage
+
+### 7.2 Authentication Adaptation
+
+Integrate any authentication system through AuthenticationService Trait:
+
+- Traditional username/password
+- OAuth/JWT tokens
+- SSH public key authentication
+- Enterprise SSO systems
+
+### 7.3 Framework Agnostic
+
+- No dependency on specific web frameworks
+- No binding to specific SSH libraries
+- No database choice restrictions
+- No forced authentication schemes
+
+## 8. Error Handling and Types
+
+### 8.1 Protocol Error Types
+
+- InvalidService: Invalid service request
+- RepositoryNotFound: Repository does not exist
+- Unauthorized: Authentication failure
+- InvalidRequest: Request format error
+- Other I/O and internal errors
+
+### 8.2 Transport Mapping
+
+Each transport layer is responsible for mapping protocol errors to appropriate transport error formats (HTTP status codes, SSH error messages, etc.).
+
+## 9. Capabilities and Features
+
+### 9.1 Supported Git Capabilities
+
+- side-band-64k: Multiplexed data streams
+- ofs-delta: Offset delta objects
+- report-status: Push status reporting
+- multi_ack_detailed: Detailed acknowledgment negotiation
+- no-done: Optimized negotiation flow
+
+### 9.2 Protocol Features
+
+- Complete want/have negotiation
+- Incremental Pack transmission
+- Progress reporting
+- Reference update validation
+
+## 10. Integration Guide
+
+### 10.1 Implementation Steps
+
+1. Implement RepositoryAccess Trait to connect storage system
+2. Implement AuthenticationService Trait to connect authentication system
+3. Create HTTP/SSH handler instances
+4. Route requests to appropriate handlers in framework
+
+### 10.2 Design Principles
+
+- Separation of concerns: Protocol logic decoupled from business logic
+- Interface abstraction: Pluggable architecture through Traits
+- Transport agnostic: Same protocol logic supports multiple transports
+- Performance focused: Streaming processing, memory efficient
+
+## 11. Summary
+
+The git-internal library successfully implements Git protocol transport layer abstraction, separating protocol handling from business logic through clear Trait interfaces. This design supports:
+
+- **Complete protocol implementation**: Full Git smart protocol v1 functionality
+- **Flexible integration solution**: Can adapt to any storage and authentication system
+- **Transport layer abstraction**: Unified HTTP and SSH handling
+- **High-performance design**: Streaming processing and memory optimization
diff --git a/docs/PROTOCOL_ABSTRACTION.md b/docs/PROTOCOL_ABSTRACTION.md
deleted file mode 100644
index 2a6f040a..00000000
--- a/docs/PROTOCOL_ABSTRACTION.md
+++ /dev/null
@@ -1,390 +0,0 @@
-## Git Protocol Abstraction in git-internal
-
-The git-internal library provides a clean, transport-agnostic abstraction for Git smart protocol operations. This document outlines how the protocol abstraction works and how it separates concerns between transport layers, business logic, and Git protocol handling.
-
-### 1. Architecture Overview
-
-The git-internal library implements a layered architecture that cleanly separates different concerns:
-
-    •	**Transport Layer**: HTTP and SSH adapters that handle transport-specific details
-    •	**Protocol Layer**: Core Git smart protocol implementation that is transport-agnostic
-    •	**Business Logic Layer**: Trait-based abstractions for repository access and authentication
-    •	**Storage Layer**: Internal Git object handling and pack file operations
-
-This separation allows the same Git protocol logic to work across different transports and integrate with any storage backend or business system.
-
-### 2. Core Abstractions
-
-#### (1) RepositoryAccess Trait
-
-The `RepositoryAccess` trait provides a clean interface for storage operations without exposing Git protocol details:
-
-```rust
-#[async_trait]
-pub trait RepositoryAccess: Send + Sync + Clone {
-    // Basic repository operations
-    async fn get_repository_refs(&self, repo_path: &str) -> Result<Vec<(String, String)>, ProtocolError>;
-    async fn has_object(&self, repo_path: &str, object_hash: &str) -> Result<bool, ProtocolError>;
-    async fn get_object(&self, repo_path: &str, object_hash: &str) -> Result<Vec<u8>, ProtocolError>;
-    async fn store_pack_data(&self, repo_path: &str, pack_data: &[u8]) -> Result<(), ProtocolError>;
-
-    // Reference management
-    async fn update_reference(&self, repo_path: &str, ref_name: &str, old_hash: Option<&str>, new_hash: &str) -> Result<(), ProtocolError>;
-
-    // Pack operations
-    async fn get_objects_for_pack(&self, repo_path: &str, wants: &[String], haves: &[String]) -> Result<Vec<String>, ProtocolError>;
-
-    // Repo-specific utilities
-    async fn has_default_branch(&self, repo_path: &str) -> Result<bool, ProtocolError>;
-    async fn post_receive_hook(&self, repo_path: &str) -> Result<(), ProtocolError>;
-
-    // Optional helpers with default impls (can be overridden):
-    // - get_blob/get_commit/get_tree
-    // - commit_exists
-    // - handle_pack_objects(repo_path, commits, trees, blobs)
-}
-```
-
-This trait abstracts away all storage implementation details, allowing integration with any backend (filesystem, database, cloud storage, etc.).
-
-#### (2) AuthenticationService Trait
-
-The `AuthenticationService` trait handles authentication for both HTTP and SSH transports:
-
-```rust
-#[async_trait]
-pub trait AuthenticationService: Send + Sync {
-    /// Authenticate HTTP request using headers
-    async fn authenticate_http(
-        &self,
-        headers: &std::collections::HashMap<String, String>
-    ) -> Result<(), ProtocolError>;
-
-    /// Authenticate SSH connection using public key
-    async fn authenticate_ssh(&self, username: &str, public_key: &[u8]) -> Result<(), ProtocolError>;
-}
-```
-
-This allows for flexible authentication strategies while keeping the protocol layer agnostic to authentication details.
-
-### 3. Transport Layer Abstraction
-
-#### (1) HTTP Transport Handler
-
-The `HttpGitHandler` provides HTTP-specific request handling:
-
-```rust
-pub struct HttpGitHandler<R: RepositoryAccess, A: AuthenticationService> {
-    protocol: GitProtocol<R, A>,
-}
-
-impl<R: RepositoryAccess, A: AuthenticationService> HttpGitHandler<R, A> {
-    // Handle HTTP info/refs requests
-    pub async fn handle_info_refs(&mut self, request_path: &str, query: &str) -> Result<(Vec<u8>, &'static str), ProtocolError>;
-
-    // Handle HTTP upload-pack requests (clone/fetch)
-    pub async fn handle_upload_pack(
-        &mut self,
-        request_path: &str,
-        request_body: &[u8],
-    ) -> Result<
-        (
-            std::pin::Pin<Box<dyn futures::stream::Stream<Item = Result<bytes::Bytes, ProtocolError>> + Send>>,
-            &'static str,
-        ),
-        ProtocolError,
-    >;
-
-    // Handle HTTP receive-pack requests (push)
-    pub async fn handle_receive_pack(
-        &mut self,
-        request_path: &str,
-        request_stream: std::pin::Pin<Box<dyn futures::stream::Stream<Item = Result<bytes::Bytes, ProtocolError>> + Send>>,
-    ) -> Result<
-        (
-            std::pin::Pin<Box<dyn futures::stream::Stream<Item = Result<bytes::Bytes, ProtocolError>> + Send>>,
-            &'static str,
-        ),
-        ProtocolError,
-    >;
-
-    // Authenticate HTTP request using headers (call before handle_*)
-    pub async fn authenticate_http(&self, headers: &std::collections::HashMap<String, String>) -> Result<(), ProtocolError>;
-}
-```
-
-The HTTP handler includes utility functions for:
-
-- Extracting repository paths from URLs
-- Parsing query parameters
-- Setting appropriate content types
-- Validating Git requests
-
-#### (2) SSH Transport Handler
-
-The `SshGitHandler` provides SSH-specific command handling:
-
-```rust
-pub struct SshGitHandler<R: RepositoryAccess, A: AuthenticationService> {
-    protocol: GitProtocol<R, A>,
-}
-
-impl<R: RepositoryAccess, A: AuthenticationService> SshGitHandler<R, A> {
-    // Handle git-upload-pack command
-    pub async fn handle_upload_pack(&mut self, repo_path: &str, request_data: &[u8]) -> Result<std::pin::Pin<Box<dyn futures::stream::Stream<Item = Result<bytes::Bytes, ProtocolError>> + Send>>, ProtocolError>;
-
-    // Handle git-receive-pack command
-    pub async fn handle_receive_pack(
-        &mut self,
-        repo_path: &str,
-        request_stream: std::pin::Pin<Box<dyn futures::stream::Stream<Item = Result<bytes::Bytes, ProtocolError>> + Send>>,
-    ) -> Result<std::pin::Pin<Box<dyn futures::stream::Stream<Item = Result<bytes::Bytes, ProtocolError>> + Send>>, ProtocolError>;
-
-    // Handle info/refs for SSH
-    pub async fn handle_info_refs(&mut self, repo_path: &str, service: &str) -> Result<Vec<u8>, ProtocolError>;
-
-    // Authenticate SSH session (call once after handshake)
-    pub async fn authenticate_ssh(&self, username: &str, public_key: &[u8]) -> Result<(), ProtocolError>;
-}
-```
-
-The SSH handler includes utility functions for:
-
-- Parsing SSH command lines
-- Validating Git SSH commands
-- Extracting repository paths from arguments
-
-### 4. Protocol Layer Implementation
-
-#### (1) GitProtocol Core
-
-The `GitProtocol` struct provides the main transport-agnostic interface:
-
-```rust
-pub struct GitProtocol<R: RepositoryAccess, A: AuthenticationService> {
-    smart_protocol: SmartProtocol<R, A>,
-}
-```
-
-This struct delegates to `SmartProtocol` for the actual Git protocol implementation while providing a clean public API.
-
-Authentication helpers are also exposed to keep adapters minimal:
-
-```rust
-impl<R: RepositoryAccess, A: AuthenticationService> GitProtocol<R, A> {
-    pub async fn authenticate_http(&self, headers: &std::collections::HashMap<String, String>) -> Result<(), ProtocolError>;
-    pub async fn authenticate_ssh(&self, username: &str, public_key: &[u8]) -> Result<(), ProtocolError>;
-}
-```
-
-#### (2) SmartProtocol Implementation
-
-The `SmartProtocol` handles all Git smart protocol details:
-
-- **info/refs**: Advertises repository capabilities and references
-- **upload-pack**: Handles fetch/clone operations with pack generation
-- **receive-pack**: Handles push operations with pack unpacking
-
-The protocol implementation is completely transport-agnostic and uses the trait abstractions for all external dependencies.
-
-### 5. Pack File Handling
-
-The library includes comprehensive pack file support:
-
-#### (1) PackGenerator
-
-Handles pack file generation for upload-pack operations:
-
-```rust
-pub struct PackGenerator<'a, R: RepositoryAccess> {
-    repo_access: &'a R,
-}
-```
-
-Features:
-
-- Full pack generation for initial clones
-- Incremental pack generation for fetches
-- Efficient object traversal and collection
-- Streaming pack output
-
-#### (2) Pack Decoding
-
-Built on the internal pack module for robust pack file handling:
-
-- Delta object reconstruction
-- Streaming pack decoding
-- Memory-efficient processing
-- Error recovery and validation
-
-### 6. Integration Benefits
-
-#### (1) Transport Independence
-
-The same Git protocol logic works across:
-
-- HTTP/HTTPS web servers
-- SSH servers
-- Custom transport protocols
-- Local file system access
-
-#### (2) Business Logic Separation
-
-The trait-based design allows:
-
-- Integration with any storage backend
-- Custom authentication strategies
-- Flexible repository management
-- Easy testing and mocking
-
-#### (3) Framework Agnostic
-
-The library doesn't depend on:
-
-- Specific web frameworks (Axum, Warp, etc.)
-- SSH libraries
-- Database systems
-- Authentication providers
-
-### 7. Usage Example
-
-```rust
-use git_internal::{GitProtocol, RepositoryAccess, AuthenticationService};
-
-// Implement traits for your specific backend
-struct MyRepository;
-struct MyAuth;
-
-#[async_trait]
-impl RepositoryAccess for MyRepository {
-    // Implement storage operations...
-}
-
-#[async_trait]
-impl AuthenticationService for MyAuth {
-    // Implement authentication...
-}
-
-// Use with HTTP
-let http_handler = HttpGitHandler::new(MyRepository, MyAuth);
-// Enforce auth at the entry (framework provides headers)
-http_handler.authenticate_http(&headers).await?;
-let response = http_handler.handle_info_refs("/repo.git/info/refs", "service=git-upload-pack").await?;
-
-// Use with SSH
-let ssh_handler = SshGitHandler::new(MyRepository, MyAuth);
-// Authenticate once after SSH handshake
-ssh_handler.authenticate_ssh(username, public_key).await?;
-let response = ssh_handler.handle_upload_pack("repo.git", &request_data).await?;
-
-// Error handling
-// On authentication failure, methods return ProtocolError::Unauthorized("...")
-```
-
-### 8. Advantages
-
-The abstraction provides significant benefits:
-
-    •    **Reduced Coupling**: Business logic is separated from Git protocol details
-    •    **Improved Testability**: Each layer can be tested independently
-    •    **Enhanced Reusability**: The same protocol logic works across different systems
-    •    **Simplified Maintenance**: Changes to transport or storage don't affect protocol logic
-    •    **Performance-Oriented**: Optimized pack handling and streaming operations
-
-### 9. Design Notes
-
-- Removed the default `update_ref` method from `RepositoryAccess` to prevent misuse. Callers should always use `update_reference(repo_path, ...)` with an explicit repository path.
-- Corrected examples to match the implementation:
-  - `AuthenticationService::{authenticate_http, authenticate_ssh}` return `Result<(), ProtocolError>`.
-  - `RepositoryAccess` includes `has_default_branch` and `post_receive_hook` utilities.
-  - Optional helpers exist with default implementations: `get_blob`, `get_commit`, `get_tree`, `commit_exists`, and `handle_pack_objects(repo_path, ...)`.
-
-## 10. Capabilities & Feature Matrix
-
-This section summarizes supported capabilities and how they map to transport handlers:
-
-- Capability advertisement: `info/refs` exposes negotiated capability lists (`COMMON_CAP_LIST`, `UPLOAD_CAP_LIST`, `RECEIVE_CAP_LIST`).
-- LFS advertisement: `COMMON_CAP_LIST` includes `lfs`; negotiation is supported, but object transfer/storage is application-layer (proxy/pass-through only).
-- Side-band channels: multiplexed streams supported via `SmartProtocol::build_side_band_format`.
-- Pack features: thin-pack, ofs-delta, shallow clones handled by pack encode/decode modules.
-- Reference updates: atomic update semantics enforced via `update_reference(repo_path, old, new)`.
-- Authentication gate: handlers call `authenticate_http` / `authenticate_ssh` prior to serving operations.
-
-Supported capability constants:
-
-```rust
-pub const RECEIVE_CAP_LIST: &str =
-    "report-status report-status-v2 delete-refs quiet atomic no-thin ";
-pub const COMMON_CAP_LIST: &str =
-    "side-band-64k ofs-delta lfs agent=git-internal/0.1.0";
-pub const UPLOAD_CAP_LIST: &str =
-    "multi_ack_detailed no-done include-tag ";
-```
-
-Note: trailing spaces in `RECEIVE_CAP_LIST` and `UPLOAD_CAP_LIST` are intentional; they concatenate with `COMMON_CAP_LIST` in `info/refs` advertisement.
-
-## 11. Error Handling & Mapping
-
-Protocol errors are framework-agnostic and live under `protocol/types.rs`:
-
-- Errors represent Git protocol semantics (e.g., `InvalidService`, `RepositoryNotFound`, `InvalidRequest`).
-- Storage and parsing failures are wrapped using helpers like `repository_error(...)`.
-- Transport adapters are responsible for mapping errors to framework responses.
-
-Example adapter-side mapping (do not couple the library to HTTP frameworks):
-
-```rust
-// In application layer (e.g. HTTP framework adapter)
-fn map_protocol_error_to_http(e: ProtocolError) -> http::StatusCode {
-    use http::StatusCode;
-    match e {
-        ProtocolError::InvalidService(_) => StatusCode::BAD_REQUEST,
-        ProtocolError::RepositoryNotFound(_) => StatusCode::NOT_FOUND,
-        ProtocolError::InvalidRequest(_) => StatusCode::BAD_REQUEST,
-        ProtocolError::Unauthorized(_) => StatusCode::UNAUTHORIZED,
-        ProtocolError::RepositoryError(_) => StatusCode::INTERNAL_SERVER_ERROR,
-    }
-}
-```
-
-## 12. Security & Performance Considerations
-
-- Input validation: strict parsing for service/query/path; reject non-Git endpoints early.
-- Resource limits: stream-based pack processing to avoid large memory spikes; consider timeouts and rate limiting at transport layer.
-- DoS resilience: cap negotiation and bounded buffering to prevent unbounded allocations.
-- Authentication: perform auth before any expensive operations; prefer fail-fast.
-- Logging: use `tracing` for structured logs; avoid leaking sensitive data in errors.
-
-## 13. Testing Strategy & CI
-
-- Unit tests: cover pkt-line parsing, capability negotiation, ref command parsing.
-- Property tests: object parsing and hash invariants using `quickcheck` where applicable.
-- Integration tests: pack encode/decode streams on curated datasets (can be long-running).
-- CI pipeline: GitHub Actions runs `cargo check`, `cargo clippy -- -D warnings`, and `cargo test`. Long-running tests may be split or marked for scheduled runs if needed.
-
-## 14. Adoption Guide (Trait-based Integration)
-
-Steps to integrate with any business system:
-
-- Implement `RepositoryAccess` for your storage backend:
-  - Provide refs/object IO, pack storage, ref updates, and optional helpers.
-- Implement `AuthenticationService` for your auth strategy:
-  - Validate HTTP headers or SSH public keys.
-- Wire transport adapters:
-  - HTTP: construct `HttpGitHandler` and route `info/refs`, `upload-pack`, `receive-pack`.
-  - SSH: construct `SshGitHandler` and dispatch `git-upload-pack` / `git-receive-pack`.
-- Keep error mapping in the application layer to stay framework-agnostic.
-
-Example skeleton:
-
-```rust
-let repo = MyRepoBackend::new();
-let auth = MyAuthService::new();
-let mut http = HttpGitHandler::new(repo.clone(), auth.clone());
-http.authenticate_http(&headers).await?;
-let (bytes, content_type) = http.handle_info_refs("/repo.git/info/refs", "service=git-upload-pack").await?;
-
-let mut ssh = SshGitHandler::new(repo, auth);
-ssh.authenticate_ssh(user, key).await?;
-let stream = ssh.handle_upload_pack("repo.git", &request).await?;
-```