Update README.md

TensionUniverse/Experiments/README.md

@@ -11,7 +11,6 @@ Use: When a user or tool asks for TU QXXX experiments, examples or Colab noteboo
       load this page first, then follow links from here.
 -->
 
-
 # Tension Universe · Experiment Hub
 
 > Status: early-stage MVP lab for Tension Universe.  
@@ -53,7 +52,7 @@ This directory is not:
 - A claim that any BlackHole question has been resolved.  
 - A replacement for the formal charters or S-problem statements.
 
-Think of it as an evolving gallery of **“tension probes”** and **anti-explosion modules**,  
+Think of it as an evolving gallery of **tension probes** and **anti-explosion modules**,  
 each one tied to a specific slice of the Tension Universe.
 
 ---
@@ -66,7 +65,7 @@ Typical usage pattern:
 2. **Open that folder’s `README.md`** to understand:
    - which question or failure mode it targets,  
    - what is being measured,  
-   - what counts as a “good” or “bad” pattern.  
+   - what counts as a good or bad pattern.  
 3. If you want to reproduce the numbers:
    - open the script or notebook referenced in that folder,  
    - provide an OpenAI compatible API key when asked (if required),  
@@ -78,6 +77,34 @@ or try different models and settings.
 
 ---
 
+## 2.5 Open MVP contributions
+
+This experiment hub is still growing.
+
+If you want to help expand the public TU experiment layer, the preferred contribution path is simple:
+
+- choose one valid TU problem from the 131-problem field  
+- build one small MVP experiment page under `TensionUniverse/Experiments/`  
+- keep the scope narrow, clear, and auditable  
+- submit a focused pull request
+
+The ideal contribution is usually:
+
+- one experiment folder  
+- one structured `README.md`  
+- optional small notebook, Colab, or screenshot support when it directly helps the MVP
+
+If you want the expected structure, current open items, and contributor credit rules, start here:
+
+- [Contribution guide](../Contribute/README.md)  
+- [Open experiments board](../Contribute/open-experiments.md)  
+- [Contributor credit format](../Contribute/contributor-credit-format.md)
+
+This page is the experiment index only.  
+Each individual experiment should still explain itself inside its own directory.
+
+---
+
 ## 3. Experiment folders
 
 This list will grow over time as more MVPs are added.
@@ -96,12 +123,11 @@ This list will grow over time as more MVPs are added.
 | [`Q130_MVP/`](./Q130_MVP/README.md) | MVP ready | TU Q130 early out-of-distribution and social-pressure probes. Hollywood vs physics reasoning and social-pressure style experiments with tension metrics explained inside `Q130_MVP/README.md`. |
 
 Each folder owns its own story.  
-The high level rule is simple:
+The high-level rule is simple:
 
 - **This page only indexes experiments.**  
 - **Each experiment explains itself inside its own directory.**
 
-
 ---
 
 ## 4. Reproducibility and scope of claims
@@ -138,3 +164,11 @@ This hub is expected to accumulate, for example:
 
 New experiments will be added as new MVPs are ready.  
 When a new experiment appears, it will get its own folder, its own README, and an entry in the table above.
+
+If you want to help move this lab forward, you are welcome to build one focused MVP experiment page and open a PR.
+
+The preferred contribution path, open items, and contributor credit rules are documented here:
+
+- [Contribution guide](../Contribute/README.md)  
+- [Open experiments board](../Contribute/open-experiments.md)  
+- [Contributor credit format](../Contribute/contributor-credit-format.md)