feat #236: Implement ReadIndex batching mechanism to improve LinearizableRead throughput

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,20 +1,67 @@
 ---
 name: Feature Request
-about: Suggest an idea for this project
-title: ''
-labels: ''
-assignees: ''
+about: Propose a feature based on real production needs
+title: "[Feature] "
+labels: "enhancement"
+assignees: ""
+---
+
+## ⚠️ Read First
+
+d-engine follows the **20/80 rule** - we build features that solve 80% of users' problems, not edge cases.
+
+**Before submitting:**
+
+- [ ] This solves a **real production problem** (not "it would be nice")
+- [ ] I've checked existing features don't solve this
+
+Features that don't meet this bar will be deferred or declined.
 
 ---
 
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. 
+## Production Context
+
+**What production problem does this solve?**  
+(Be specific: "Our company runs d-engine for X and hits Y problem daily")
+
+**Who is affected?**
+
+- [ ] Most embedded mode users
+- [ ] Most standalone mode users
+- [ ] Specific industry/scale (describe below)
+
+**Current workaround:**  
+(What are you doing now? Why is it insufficient?)
+
+---
 
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
+## Proposed Solution
+
+**Your solution:**
+
+**Why is this the simplest approach?**  
+(d-engine values simplicity - explain why this doesn't bloat the API)
+
+---
+
+## Impact vs Complexity
+
+**Benefits:**
+
+- Performance impact: (quantify if possible)
+- User pain reduced: (describe)
+
+**Complexity added:**
+
+- [ ] New public APIs
+- [ ] More config options
+- [ ] Additional dependencies
+- [ ] Increased testing surface
+
+---
 
-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
+## Additional Context
 
-**Additional context**
-Add any other context or screenshots about the feature request here.
+- Benchmarks/measurements (if performance-related)
+- Similar features in etcd/consul (if applicable)
+- Your willingness to contribute code

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,14 +1,72 @@
+## What Does This PR Do?
 
-## Type
-- [ ] New feature
-- [ ] Bug Fix
+(1-2 sentence summary)
 
-## Description
-Briefly describe the purpose of this PR:
+**Type:**
 
-## Related Issues
-- Close Issue: #123
+- [ ] Bug Fix (with test)
+- [ ] Feature (issue #\_\_\_ approved)
+- [ ] Documentation
+- [ ] Test/Coverage
+- [ ] Performance (with benchmark)
+
+---
+
+## Why Is This Needed?
+
+**For features:** Link to approved issue #\_\_\_
+
+**For bugs:** Describe the problem and how this fixes it
+
+---
 
 ## Checklist
-- [ ] The code has been tested locally (unit test or integration test)
-- [ ] Squash down commits to one or two logical commits which clearly describe the work you've done.
+
+**Required:**
+
+- [ ] `make test` passes
+- [ ] Added tests for new code
+- [ ] Commits squashed to 1-2 logical units
+
+**If changing APIs:**
+
+- [ ] Updated relevant docs
+- [ ] Explained why complexity is justified
+
+---
+
+## Testing
+
+**How tested:**
+
+- Unit tests: (describe)
+- Integration tests: (if applicable)
+- Manual testing: (if applicable)
+
+**For bug fixes:**
+
+- [ ] Added test that fails without this fix
+
+**For performance improvements:**
+
+- [ ] Included benchmark showing improvement
+
+---
+
+## Does This Follow d-engine's Principles?
+
+- [ ] Solves a real problem for most users (not just my edge case)
+- [ ] Keeps implementation simple
+- [ ] Doesn't bloat the API surface
+
+---
+
+## Reviewer Notes
+
+(Optional: anything reviewers should focus on)
+
+**Estimated review complexity:**
+
+- [ ] Quick (< 100 lines)
+- [ ] Medium (< 300 lines)
+- [ ] Deep (> 300 lines)

.github/workflows/ci.yml

@@ -51,6 +51,17 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Free Disk Space (Ubuntu)
+        uses: jlumbroso/free-disk-space@main
+        with:
+          tool-cache: false
+          android: true
+          dotnet: true
+          haskell: true
+          large-packages: false
+          docker-images: true
+          swap-storage: false
+
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@master
         with: