v1.0.0

CHANGELOG.md

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+# Changelog
+
+All notable changes to Plan2Code will be documented in this file.
+
+## v1.0.0 - 2025-12-04
+
+### ✨ Added
+
+- Initial 4-step workflow methodology for AI-assisted development
+  - Step 1: Planning mode with 90% confidence threshold
+  - Step 2: Documentation mode for structured implementation specs
+  - Step 3: Implementation mode with phase-by-phase execution
+  - Step 4: Finalization mode for validation and archiving
+- Multi-platform support with pre-configured workflow files:
+  - Claude Code CLI (`.claude/commands/`)
+  - Cursor AI (`.cursor/rules/`)
+  - GitHub Copilot CLI (`.github/agents/`)
+  - VS Code Copilot (`.github/prompts/`)
+  - Windsurf IDE (`.windsurf/workflows/`)
+  - Google Antigravity (`.agent/workflows/`)
+  - Continue extension (`.continue/prompts/`)
+- `sync-prompts.js` utility to propagate source prompts to all platform directories