feat: implement MD034 no-bare-urls rule with comprehensive validation (#50)

Add complete implementation of MD034 rule that detects bare URLs and email
addresses that should be properly formatted with angle brackets or markdown links.

Key Features:
- Uses linkify crate for robust URL/email detection
- Handles complex edge cases: mailto: schemes, URLs in link text, code spans
- Perfect parity with original markdownlint (27/27 violations match)
- Comprehensive test suite with 16 unit tests including edge cases
- International domain and email support
- Single-pass O(n) performance optimized algorithm

Implementation Details:
- Processes paragraph nodes to find bare URLs within markdown text
- Excludes properly formatted contexts: <url>, [text](url), `code`, HTML attributes
- Enhanced markdown link detection for both link text and targets
- Sophisticated pattern matching for scheme prefixes (mailto:, ftp:, etc.)

Files Added:
- crates/quickmark_linter/src/rules/md034.rs (504 lines)
- docs/rules/md034.md (rule documentation)
- test-samples/test_md034_*.md (comprehensive test cases)

Dependencies Added:
- linkify 0.10 for accurate URL/email detection

Progress: 8/48 rules implemented (16.7%)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Claude <noreply@anthropic.com>

Author: ekropotin

.github/workflows/rust.yml

@@ -5,9 +5,9 @@ permissions:
 
 on:
   push:
-    branches: [ "main" ]
+    branches: [ "main", "development" ]
   pull_request:
-    branches: [ "main" ]
+    branches: [ "main", "development" ]
 
 env:
   CARGO_TERM_COLOR: always
@@ -26,7 +26,7 @@ jobs:
 
   fmt:
     runs-on: ubuntu-latest
-    
+
     steps:
     - uses: actions/checkout@v4
     - name: Check formatting

Cargo.lock

@@ -85,7 +85,7 @@ ignored_definitions = ["//"]
 
 ## Rules
 
-**Implementation Progress: 7/48 rules completed (14.6%)**
+**Implementation Progress: 8/48 rules completed (16.7%)**
 
 - [x] **[MD001](docs/rules/md001.md)** *heading-increment* - Heading levels should only increment by one level at a time
 - [x] **[MD003](docs/rules/md003.md)** *heading-style* - Consistent heading styles
@@ -115,7 +115,7 @@ ignored_definitions = ["//"]
 - [ ] **MD031** *blanks-around-fences* - Fenced code blocks surrounded by blank lines
 - [ ] **MD032** *blanks-around-lists* - Lists surrounded by blank lines
 - [ ] **MD033** *no-inline-html* - Inline HTML usage
-- [ ] **MD034** *no-bare-urls* - Bare URLs without proper formatting
+- [x] **[MD034](docs/rules/md034.md)** *no-bare-urls* - Bare URLs without proper formatting
 - [ ] **MD035** *hr-style* - Horizontal rule style consistency
 - [ ] **MD036** *no-emphasis-as-heading* - Emphasis used instead of heading
 - [ ] **MD037** *no-space-in-emphasis* - Spaces inside emphasis markers

README.md

@@ -294,6 +294,7 @@ mod tests {
         heading-increment = 'warn'
         heading-style = 'err'
         line-length = 'err'
+        no-bare-urls = 'err'
         no-duplicate-heading = 'err'
         link-fragments = 'warn'
         reference-links-images = 'err'
@@ -343,6 +344,10 @@ mod tests {
             RuleSeverity::Error,
             *parsed.linters.severity.get("line-length").unwrap()
         );
+        assert_eq!(
+            RuleSeverity::Error,
+            *parsed.linters.severity.get("no-bare-urls").unwrap()
+        );
         assert_eq!(
             RuleSeverity::Error,
             *parsed.linters.severity.get("no-duplicate-heading").unwrap()

crates/quickmark_config/src/lib.rs

@@ -5,6 +5,7 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1.0.86"
+linkify = "0.10"
 once_cell = "1.19"
 regex = "1.0"
 tree-sitter = "0.25.6"