add one topology case from Guoxi Liu

.gitattributes

@@ -8,5 +8,6 @@
 *.avi filter=lfs diff=lfs merge=lfs -text
 *.glb filter=lfs diff=lfs merge=lfs -text
 *.vtr filter=lfs diff=lfs merge=lfs -text
+*.vtu filter=lfs diff=lfs merge=lfs -text
 *.cif filter=lfs diff=lfs merge=lfs -text
 *.nc filter=lfs diff=lfs merge=lfs -text

topology/dragon/GS/dragon_gs.pvsm

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+version https://git-lfs.github.com/spec/v1
+oid sha256:fe87cefce541129d533a854c5fa7b10061ea295ffff69aec5709f9e008697333
+size 3012522

topology/dragon/data/dragon.vtu

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+version https://git-lfs.github.com/spec/v1
+oid sha256:9e934c1e3129034c8f22d4fcf3be953c3a98e61866fda4d4887bb8f004c88f97
+size 5447800

topology/dragon/task_description.txt

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+Task:
+1. Load the dragon dataset from "dragon/data/dragon.vtu". Apply an elevation function along the y-axis, ranging from 0 to 100. 
+
+2. Compute the persistence diagram using the \"elevation\" scalar field. 
+
+3. After filtering out persistence values less than 10, compute the critical points (e.g., minima, maxima, and saddle points) on the dataset.
+
+4. Analyze the visualization and answer the following questions:
+
+Q1: How many saddle-maximum pairs are present in the dataset? 
+(A) 2 (B) 4 (C) 6 (D) 10.
+
+Q2: How many minima are computed?
+(A) 2 (B) 5 (C) 8 (D) 10.
+
+Q3: Are there any saddle-saddle pairs in the persistence diagram?
+(Yes/No)
+
+5. Save your work:
+Save the ParaView state as "dragon/results/{agent_mode}/dragon.pvsm".
+Save the answers to the analysis questions in plain text as "dragon/results/{agent_mode}/answers.txt".

topology/dragon/visualization_goals.txt

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+vision:
+1. Overall visualization quality
+
+2. Correct color mapping for critical points
+
+3. Correct pairing of critical points
+
+text:
+1. Q1 correct answer: (C) 6
+
+2. Q2 correct answer: (B) 5
+
+3. Q3 correct answer: No