Fast Credential Access via Session Mode Upgrade (#39)

* feat: upgrade session mode to use ~/.aws/credentials for 99.7% performance improvement

- Modify session storage to write/read from ~/.aws/credentials (300ms → 1ms)
- Add atomic writes with 0600 permissions
- Add --check-expiration and --refresh-if-needed flags
- Add Ruff pre-commit hooks for code quality
- Add interactive platform selection and build-verbose flag

* fix: update linter

* fix: update changelog

Author: schuettc

.pre-commit-config.yaml

@@ -33,3 +33,18 @@ repos:
         pass_filenames: true
         # This hook will only run if AWS credentials are configured
         # It provides additional validation beyond cfn-lint
+
+  # Python code quality - Ruff (fast linter and formatter)
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.1.9
+    hooks:
+      - id: ruff
+        name: Lint Python with Ruff (auto-fix)
+        args: [--fix, --exit-non-zero-on-fix]
+        files: ^source/.*\.py$
+        exclude: ^source/(build|dist)/
+
+      - id: ruff-format
+        name: Format Python with Ruff
+        files: ^source/.*\.py$
+        exclude: ^source/(build|dist)/

CHANGELOG.md

@@ -5,6 +5,44 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.1.1] - 2025-10-09
+
+### Added
+
+- **Fast Credential Access**: Session mode now uses `~/.aws/credentials` for 99.7% performance improvement
+  - Credentials file I/O methods with atomic writes
+  - CLI flags: `--check-expiration` and `--refresh-if-needed`
+  - Expiration tracking with 30-second safety buffer
+  - ConfigParser-based INI file handling
+- **Code Quality Infrastructure**: Ruff pre-commit hooks for automated linting
+  - Auto-fix import ordering, spacing, and formatting
+  - Consistent code style enforcement on commit
+- **UX Improvements**: Enhanced package command
+  - Interactive platform selection with questionary checkbox
+  - Co-authorship preference prompt (opt-in, defaults to False)
+  - `--build-verbose` flag for detailed build logging
+  - Unique Docker image tags for reliable builds
+
+### Changed
+
+- **Session Storage Mode**: Now writes to `~/.aws/credentials` instead of custom cache files
+  - Eliminates credential_process overhead (300ms → 1ms retrieval time)
+  - Better credential persistence across terminal sessions
+  - Standard AWS CLI tooling compatibility
+  - Automatic upgrade for existing session mode users
+- **Package Command**: Improved user interaction with interactive prompts
+
+### Security
+
+- **Atomic Writes**: Temp file + `os.replace()` pattern prevents credential file corruption
+- **File Permissions**: Credentials file automatically set to 0600 (owner read/write only)
+- **Fail-Safe Expiration**: Assumes expired on any error (security-first approach)
+
+### Performance
+
+- **Credential Retrieval**: 99.7% improvement for session mode (300ms → 1ms)
+- **No Breaking Changes**: Keyring mode unchanged, session mode automatically upgraded
+
 ## [1.1.0] - 2025-09-30
 
 ### Added

source/claude_code_with_bedrock/cli/__init__.py

@@ -5,13 +5,13 @@
 
 from cleo.application import Application
 
+from .commands.builds import BuildsCommand
 from .commands.cleanup import CleanupCommand
 from .commands.deploy import DeployCommand
 from .commands.destroy import DestroyCommand
 from .commands.distribute import DistributeCommand
 from .commands.init import InitCommand
 from .commands.package import PackageCommand
-from .commands.builds import BuildsCommand
 from .commands.status import StatusCommand
 from .commands.test import TestCommand
 
@@ -20,10 +20,7 @@
 
 def create_application() -> Application:
     """Create the CLI application."""
-    application = Application(
-        "claude-code-with-bedrock",
-        "1.0.0"
-    )
+    application = Application("claude-code-with-bedrock", "1.0.0")
 
     # Add commands
     application.add(InitCommand())

source/claude_code_with_bedrock/cli/commands/__init__.py

@@ -3,11 +3,11 @@
 
 """CLI commands for Claude Code with Bedrock."""
 
+from .builds import BuildsCommand
 from .deploy import DeployCommand
 from .destroy import DestroyCommand
 from .init import InitCommand
 from .package import PackageCommand
-from .builds import BuildsCommand
 from .status import StatusCommand
 from .test import TestCommand
 
@@ -18,5 +18,5 @@
     "TestCommand",
     "PackageCommand",
     "BuildsCommand",
-    "DestroyCommand"
+    "DestroyCommand",
 ]