feat: expand intelligent investigation workspace

tests/fixtures/unified-presentation.jsonl

@@ -0,0 +1,12 @@
+{"record_type":"presentation","command":{"action":"locate_features","layer":"scada","feature_ids":["P1"]}}
+{"record_type":"presentation","command":{"action":"zoom_to_map","center":[121.48,31.1],"zoom":14}}
+{"record_type":"presentation","command":{"action":"highlight_features","layer":"scada","feature_ids":["P1"],"effect":"pulse"}}
+{"record_type":"presentation","command":{"action":"open_chart","chart_id":"fixture-pressure","chart":{"title":"合成压力对比","chart_type":"line","x_data":["08:00","08:15","08:30"],"series":[{"name":"异常日压力水头（m）","data":[32,28,30]},{"name":"对照压力水头（m）","data":[33,32,32]}]},"evidence_refs":["dev:synthetic"]}}
+{"record_type":"presentation","command":{"action":"set_overlay","overlay_id":"fixture-area","title":"合成空间样例","mode":"geometry","evidence_id":"dev:synthetic","data":{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"origin":"synthetic"},"geometry":{"type":"Point","coordinates":[121.48,31.1]}}]}}}
+{"record_type":"presentation","command":{"action":"render_scada_analysis","items":[{"device_id":"P1","level":"high"}]}}
+{"record_type":"ui_block","evidence_refs":[],"block":{"version":"answer-ui@1","block_id":"fixture-summary","phase":"final","fallback_text":"合成候选对比，仅供展示测试。","spec":{"root":"table","elements":{"table":{"type":"Table","props":{"title":"合成候选对比","columns":["候选","说明"],"rows":[["DEMO-PIPE-01","仅供展示测试"],["DEMO-PIPE-02","未执行定位分析"]]},"children":[]}}}}}
+{"record_type":"candidate","origin":"synthetic","source_evidence_refs":[],"element_id":"DEMO-PIPE-01","rank":1,"status":"example_only"}
+{"record_type":"presentation","command":{"action":"close_chart","chart_id":"fixture-pressure"}}
+{"record_type":"presentation","command":{"action":"clear_overlay","overlay_id":"fixture-area"}}
+{"record_type":"presentation","command":{"action":"clear_highlights"}}
+{"record_type":"presentation","command":{"action":"clear_scada_analysis"}}