feat: Add OAuth authentication with dynamic client registration - #6
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Implements secure OAuth 2.0 authentication flow with PKCE for twist-cli: - OAuth 2.0 with PKCE (S256) for secure authentication without client secrets - Dynamic Client Registration (DCR) creates fresh client credentials per session - Local callback server (port 8766) with automatic browser opening - Proper resource cleanup to prevent server leaks (inspired by todoist-cli PR #5) - HTTP Basic auth for token exchange following RFC 6749 - Comprehensive error handling and user-friendly messages - Full test coverage including edge cases and cleanup scenarios Security improvements: - No hardcoded client secrets in source code - Fresh client credentials per authentication session - State parameter validation for CSRF protection - Secure code challenge/verifier generation and validation New commands: - `tw auth login` - OAuth browser authentication (new) - `tw auth token <token>` - Manual token entry (existing, unchanged) - `tw auth status` - Show authentication status (updated help text) - `tw auth logout` - Clear saved token (existing, unchanged) Backward compatibility maintained for existing token-based authentication. Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>
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# 1.0.0 (2026-01-22) ### Bug Fixes * add UTF-8 charset to OAuth callback HTML responses ([#8](#8)) ([fcb2d49](fcb2d49)) ### Features * Add Biome linting, upgrade to Node 20, and add CI workflows ([#3](#3)) ([57f802e](57f802e)) * add loading animations with global API proxy integration ([#7](#7)) ([bf53bfb](bf53bfb)) * Add OAuth authentication with dynamic client registration ([#6](#6)) ([2845ebd](2845ebd)), closes [#5](#5) * add semantic release automation for NPM publishing ([#10](#10)) ([c756324](c756324)) * Refactor login command to auth with status/logout subcommands ([#4](#4)) ([59e6493](59e6493))
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🎉 This PR is included in version 1.0.0 🎉 The release is available on: Your semantic-release bot 📦🚀 |
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Summary
Implements secure OAuth 2.0 authentication for twist-cli using Dynamic Client Registration (DCR) and PKCE flow:
twd_*client credentials per sessionNew Authentication Flow
Security Features
Why DCR?
Dynamic Client Registration eliminates the security risk of hardcoded client secrets while providing the same user experience as other OAuth flows. Each authentication session gets fresh, temporary credentials that are discarded after use.
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