wip: phase_z2 evidence 파이프라인 + matching 실험(phase2~26) + 프론트 trace 패널 진행분 스냅샷

- src: phase_z2 composition/mapper/pipeline/placement_planner/retry, ai_fallback(prompts/schema/validate), mdx_text_atoms 신규
- Front: PipelineTracePanel 신규, FramePanel/SlideCanvas/Home/designAgentApi 등 갱신 + 테스트 4종 추가
- templates/phase_z2: catalog(component_expansion_registry, node_slot_mapping 신규), frames, families, slide_base 갱신
- tests/matching: phase2~26 매칭 실험 스크립트·리포트·온톨로지 전체 (미커밋 진행분)
- tests: b4_v4 evidence, task5~28.5 시리즈, regression(imp95 baseline) 등 신규 테스트 대량 추가
- docs/reference: MDX 구조 인벤토리, MDX→Frame 구조 계약 문서
- scripts: mdx 계약/parity/coverage/viewport 체크, gitea comment, run sync 유틸
- .gitignore: tmp*.json, chromedriver, .orchestrator, *.pkl, Front_test* 등 임시/스냅샷 제외

미완성 작업의 보존용 스냅샷 커밋 (2026-07-02)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Front/client/tests/handle_generate_diag.test.ts

@@ -64,7 +64,7 @@ describe("handleGenerate [DIAG raw overrides] (IMP-42 u4)", () => {
   it("places the DIAG console.log before the runPipeline call site", () => {
     const diagIdx = HANDLE_GENERATE_BODY.indexOf('console.log("[DIAG raw overrides]"');
     const runPipelineIdx = HANDLE_GENERATE_BODY.indexOf(
-      "runPipeline(state.uploadedFile, overrides)",
+      "runPipeline(",
     );
     expect(diagIdx).toBeGreaterThan(-1);
     expect(runPipelineIdx).toBeGreaterThan(-1);
@@ -108,7 +108,7 @@ describe("handleGenerate [DIAG raw overrides] (IMP-42 u4)", () => {
     const flushIdx = HANDLE_GENERATE_BODY.indexOf("await flushUserOverrides()");
     const diagIdx = HANDLE_GENERATE_BODY.indexOf('console.log("[DIAG raw overrides]"');
     const runPipelineIdx = HANDLE_GENERATE_BODY.indexOf(
-      "runPipeline(state.uploadedFile, overrides)",
+      "runPipeline(",
     );
     expect(flushIdx).toBeGreaterThan(-1);
     expect(diagIdx).toBeGreaterThan(flushIdx);