Adds the headless agent architecture for Sprint 9 Phase 9a: - ASTUtils.h: pure AST utilities extracted from EditorUtils.h - HeadlessEditorState.h: GUI-free state with buffer management - HeadlessAgentRPCHandler.h: full RPC dispatch (20+ methods) - step245_test.cpp: 20 tests all passing Also fixes test compilation errors (NotificationSystem API changes, AgentRole permissions, DependencyPanel missing include) and adds SDL2 system library detection fix in CMakeLists.txt. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Sprint 9 Progress — Agent-First Tooling
Phase 9a: Standalone MCP Server
Step 245: HeadlessEditorState (no ImGui dependency)
Status: PASS (20/20 tests)
Created the headless agent API surface — same method interface as EditorState but with zero GUI dependencies (no ImGui, no SDL, no WebSocket).
Files created:
editor/src/ASTUtils.h— Pure AST utility functions extracted from EditorUtils.h (cloneModule, isAnnotationNode, countAnnotationNodes, findNodeById, findNodeAtPosition)editor/src/HeadlessEditorState.h— Lightweight state: HeadlessAgentState, HeadlessLibraryState, HeadlessBufferState, buffer management, orchestrator synceditor/src/HeadlessAgentRPCHandler.h— Full RPC dispatch mirroring AgentRPCHandler.h (20+ methods: getAST, parseSource, runPipeline, applyMutation, applyBatch, projectLanguage, generateCode, workflow recording, etc.)editor/tests/step245_test.cpp— 20 test cases covering construction, buffer management, RPC dispatch, permission enforcement, pipeline execution
Key design decisions:
- JSON roundtrip cloning (matching EditorUtils.h) instead of manual deep copy
- Separate HeadlessAgentState (no AgentMarketplace/WebSocket dependency chain)
- All files under 600-line architecture limit