Refactor/comprehensive refactoring and testing

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug Report
+about: Create a report to help us improve
+title: '[BUG] '
+labels: bug
+assignees: ''
+---
+
+## Bug Description
+A clear and concise description of what the bug is.
+
+## Steps to Reproduce
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Run command '....'
+3. See error
+
+## Expected Behavior
+A clear and concise description of what you expected to happen.
+
+## Actual Behavior
+What actually happened instead.
+
+## Environment
+- OS: [e.g. Ubuntu 22.04, macOS 13.0, Windows 11]
+- Vim/Neovim version: [output of `:version`]
+- Plugin version/commit: [e.g. commit hash or tag]
+- TMC CLI version: [output of `tmc-langs-cli --version`]
+
+## Configuration
+Relevant parts of your `.vimrc` or `init.vim`:
+```vim
+" Paste your relevant config here
+```
+
+## Error Messages
+```
+Paste any error messages here
+```
+
+## Additional Context
+- Output of `:TmcStatus`:
+- Output of `:TmcProjectsDir`:
+- Any other relevant information
+
+## Minimal Reproduction
+If possible, provide a minimal `.vimrc` that reproduces the issue:
+```vim
+set nocompatible
+" Add minimal config to reproduce
+```
+
+## Possible Solution
+If you have any ideas on how to fix the bug, please share them here.
+

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: Suggest an idea for this project
+title: '[FEATURE] '
+labels: enhancement
+assignees: ''
+---
+
+## Feature Description
+A clear and concise description of the feature you'd like to see.
+
+## Problem Statement
+Describe the problem this feature would solve. Ex. I'm always frustrated when [...]
+
+## Proposed Solution
+Describe the solution you'd like. How should this feature work?
+
+## Alternative Solutions
+Describe any alternative solutions or features you've considered.
+
+## Use Cases
+Describe specific use cases for this feature:
+1. Use case 1
+2. Use case 2
+
+## Benefits
+Who would benefit from this feature and how?
+
+## Implementation Ideas
+If you have ideas about how this could be implemented, share them here.
+
+## Examples
+If other tools/plugins have this feature, provide examples:
+- Tool X does this by...
+- Plugin Y implements this as...
+
+## Additional Context
+Add any other context, screenshots, or mockups about the feature request here.
+
+## Checklist
+- [ ] I have searched for similar feature requests
+- [ ] This feature would be useful to most users, not just me
+- [ ] I am willing to help implement this feature (optional)
+

.github/pull_request_template.md

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+## Description
+<!-- Provide a clear and concise description of your changes -->
+
+## Type of Change
+<!-- Mark the relevant option with an 'x' -->
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Documentation update
+- [ ] Code refactoring
+- [ ] Performance improvement
+- [ ] Test coverage improvement
+
+## Related Issues
+<!-- Link to related issues, e.g., "Fixes #123" or "Relates to #456" -->
+Fixes #
+
+## Changes Made
+<!-- List the main changes in this PR -->
+- Change 1
+- Change 2
+- Change 3
+
+## Testing
+<!-- Describe the tests you ran to verify your changes -->
+
+### Test Configuration
+- OS: [e.g. Ubuntu 22.04]
+- Vim/Neovim version: [e.g. Neovim 0.9.0]
+
+### Test Coverage
+- [ ] Added unit tests for new functionality
+- [ ] Added integration tests
+- [ ] All existing tests pass
+- [ ] Tested manually in Vim
+- [ ] Tested manually in Neovim
+
+### Test Commands Run
+```bash
+# List the test commands you ran
+vim -Nu NONE -c "Vader! test/**/*.vader"
+vint autoload/ plugin/
+```
+
+## Documentation
+- [ ] Updated README.md (if needed)
+- [ ] Updated doc/tmc.txt (if needed)
+- [ ] Updated CONTRIBUTING.md (if needed)
+- [ ] Added/updated code comments
+
+## Code Quality
+- [ ] My code follows the project's code style guidelines
+- [ ] I have performed a self-review of my own code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] My changes generate no new warnings or errors
+- [ ] Linter passes without errors (`vint autoload/ plugin/`)
+
+## Breaking Changes
+<!-- If this is a breaking change, describe what breaks and how to migrate -->
+N/A or:
+- Breaking change 1: How to migrate
+- Breaking change 2: How to migrate
+
+## Screenshots/Demos
+<!-- If applicable, add screenshots or demo GIFs to help explain your changes -->
+
+## Checklist
+- [ ] I have read the CONTRIBUTING.md document
+- [ ] My code follows the code style of this project
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] All new and existing tests pass
+- [ ] I have updated the documentation accordingly
+- [ ] I have checked my code and corrected any misspellings
+
+## Additional Notes
+<!-- Add any additional notes or context about the PR here -->
+

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [ main, master, develop ]
+  pull_request:
+    branches: [ main, master, develop ]
+
+jobs:
+  test:
+    name: Test on ${{ matrix.editor }} (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Vim versions
+          - os: ubuntu-latest
+            editor: vim-8.2
+            version: v8.2.0000
+            neovim: false
+          - os: ubuntu-latest
+            editor: vim-9.0
+            version: v9.0.0000
+            neovim: false
+          - os: macos-latest
+            editor: vim-9.0
+            version: v9.0.0000
+            neovim: false
+          # Neovim versions
+          - os: ubuntu-latest
+            editor: neovim-0.5
+            version: v0.5.0
+            neovim: true
+          - os: ubuntu-latest
+            editor: neovim-0.9
+            version: v0.9.0
+            neovim: true
+          - os: macos-latest
+            editor: neovim-0.9
+            version: v0.9.0
+            neovim: true
+          - os: ubuntu-latest
+            editor: neovim-stable
+            version: stable
+            neovim: true
+          - os: macos-latest
+            editor: neovim-stable
+            version: stable
+            neovim: true
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Vim/Neovim
+        uses: rhysd/action-setup-vim@v1
+        with:
+          version: ${{ matrix.version }}
+          neovim: ${{ matrix.neovim }}
+
+      - name: Smoke test - Plugin loads
+        run: |
+          if command -v nvim &> /dev/null; then
+            echo "Testing with Neovim"
+            nvim --version
+            nvim --headless -u NONE \
+              -c "set runtimepath+=." \
+              -c "runtime plugin/tmc.vim" \
+              -c "if exists(':TmcRunTests') | echo 'Plugin loaded successfully' | cquit 0 | else | echo 'Plugin failed to load' | cquit 1 | endif"
+          else
+            echo "Testing with Vim"
+            vim --version
+            vim -Nu NONE \
+              -c "set runtimepath+=." \
+              -c "runtime plugin/tmc.vim" \
+              -c "if exists(':TmcRunTests') | echo 'Plugin loaded successfully' | qall! | else | echo 'Plugin failed to load' | cquit | endif"
+          fi
+
+      - name: Install Vader.vim
+        run: |
+          git clone --depth 1 https://github.com/junegunn/vader.vim.git ~/.vim/plugged/vader.vim
+          mkdir -p ~/.local/share/nvim/site/pack/vendor/start
+          ln -s ~/.vim/plugged/vader.vim ~/.local/share/nvim/site/pack/vendor/start/vader.vim || true
+
+      - name: Run tests
+        run: |
+          # Find all vader test files
+          TEST_FILES=$(find test -name "*.vader" -type f | sort)
+          echo "Found test files:"
+          echo "$TEST_FILES"
+
+          if command -v nvim &> /dev/null; then
+            nvim --version
+            for test_file in $TEST_FILES; do
+              echo "============================================"
+              echo "Running test: $test_file"
+              echo "============================================"
+              nvim --headless -u NONE \
+                -c "set runtimepath^=~/.vim/plugged/vader.vim" \
+                -c "set runtimepath^=." \
+                -c "filetype plugin indent on" \
+                -c "runtime! plugin/**/*.vim" \
+                -c "Vader! $test_file" 2>&1 | tee -a test_output.log
+              if [ ${PIPESTATUS[0]} -ne 0 ]; then
+                echo "FAILED: $test_file"
+                exit 1
+              fi
+            done
+          else
+            vim --version
+            for test_file in $TEST_FILES; do
+              echo "============================================"
+              echo "Running test: $test_file"
+              echo "============================================"
+              vim -Nu NONE \
+                -c "set runtimepath^=~/.vim/plugged/vader.vim" \
+                -c "set runtimepath^=." \
+                -c "filetype plugin indent on" \
+                -c "runtime! plugin/**/*.vim" \
+                -c "Vader! $test_file" 2>&1 | tee -a test_output.log
+              if [ ${PIPESTATUS[0]} -ne 0 ]; then
+                echo "FAILED: $test_file"
+                exit 1
+              fi
+            done
+          fi
+          echo "All tests passed!"
+
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-results-${{ matrix.editor }}-${{ matrix.os }}
+          path: test_output.log
+
+  lint:
+    name: Lint VimScript
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
+
+      - name: Install vint
+        run: |
+          pip install setuptools
+          pip install vim-vint
+
+      - name: Run vint
+        run: |
+          vint --version
+          vint autoload/ plugin/
+
+  docs:
+    name: Validate documentation
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Check README
+        run: |
+          if ! grep -q "TMC-Vim" README.md; then
+            echo "README.md seems invalid"
+            exit 1
+          fi
+          echo "README.md looks good"
+
+      - name: Check help doc exists
+        run: |
+          if [ ! -f "doc/tmc.txt" ]; then
+            echo "Help documentation is missing"
+            exit 1
+          fi
+          echo "Help documentation exists"
+
+      - name: Check LICENSE
+        run: |
+          if [ ! -f "LICENSE" ]; then
+            echo "LICENSE file is missing"
+            exit 1
+          fi
+          echo "LICENSE file exists"
+