Let's add support for .cursor/rules. These folders can live in any directory in a project and contain mdc files each of which have this format (triple hyphen, key-colon-values, triple hyphen, markdown payload).

Rule traversal in codemcp/tools/read_file.py and codemcp/tools/user_prompt.py have duplicate logic for finding rules. Refactor it into a helper function. The helper function should have an optional argument for path, and the code should be generic for when you have path and when you don't.

```git-revs
d997f92  (Base revision)
8c45e42  Add pyyaml dependency for parsing MDC files
b4247d4  Add find_git_root to git_query.py __all__ list
07b80ad  Add find_git_root function to git_query.py
1fff3b1  Remove find_git_root from common.py __all__ list
b9b5698  Remove find_git_root function from common.py
0e59276  Update import in read_file.py to import find_git_root from git_query
86585e4  Update import in user_prompt.py to import find_git_root from git_query
3ea2451  Auto-commit format changes
7a844d8  Auto-commit lint changes
7690b75  Add get_applicable_rules_content to __all__
88de103  Add get_applicable_rules_content helper function
b012162  Update imports to use new helper function
a7f147d  Update read_file.py to use new helper function
073b97e  Update imports in user_prompt.py
5824407  Update user_prompt.py to use new helper function
HEAD     Auto-commit format changes
```

ghstack-source-id: 6849418
Pull Request resolved: #77

Let's add support for .cursor/rules. These folders can live in any directory in a project and contain mdc files each of which have this format (triple hyphen, key-colon-values, triple hyphen, markdown payload).

Rule traversal in codemcp/tools/read_file.py and codemcp/tools/user_prompt.py have duplicate logic for finding rules. Refactor it into a helper function. The helper function should have an optional argument for path, and the code should be generic for when you have path and when you don't.

```git-revs
d997f92  (Base revision)
8c45e42  Add pyyaml dependency for parsing MDC files
b4247d4  Add find_git_root to git_query.py __all__ list
07b80ad  Add find_git_root function to git_query.py
1fff3b1  Remove find_git_root from common.py __all__ list
b9b5698  Remove find_git_root function from common.py
0e59276  Update import in read_file.py to import find_git_root from git_query
86585e4  Update import in user_prompt.py to import find_git_root from git_query
3ea2451  Auto-commit format changes
7a844d8  Auto-commit lint changes
7690b75  Add get_applicable_rules_content to __all__
88de103  Add get_applicable_rules_content helper function
b012162  Update imports to use new helper function
a7f147d  Update read_file.py to use new helper function
073b97e  Update imports in user_prompt.py
5824407  Update user_prompt.py to use new helper function
HEAD     Auto-commit format changes
```

chore: Sample Cursor rule

test: implement E2E flow in test_cursor_rules.py using stdio_client

Modify test_cursor_rules.py to actually do the E2E flow using stdio_client (look at test_write_file.py for an example).

```git-revs
a2a63a8  (Base revision)
72076d8  Implement E2E flow using stdio_client in test_cursor_rules.py
27b2b2f  Add missing subprocess import
a0351e3  Auto-commit lint changes
08a87ea  Update JavaScript file test assertions
2ae058e  Update UserPrompt test assertions
HEAD     Update Python file test assertions
```

test: run and fix failing tests

Run and fix tests

```git-revs
dabff99  (Base revision)
ab40d4e  Fix match_file_with_glob to correctly match file paths against glob patterns
0ae4c1e  Improve match_file_with_glob to handle **/*.js pattern correctly
109e663  Fix load_rule_from_file to initialize globs as an empty list instead of None
da12273  Update Rule class to have non-optional globs field
5a048cd  Manually parse frontmatter to handle unquoted glob patterns
d3c2684  Improve match_file_with_glob to handle patterns like 'src/**/*.jsx'
4d774b2  Simplify match_file_with_glob function with a more direct approach
53532e6  Auto-commit format changes
HEAD     Auto-commit lint changes
```

ghstack-source-id: 2cb3add
Pull Request resolved: #77