feat: update flavor config based on real Sentry usage analysis

Based on analysis of 60 recent PRs from top Sentry repositories:

**Key findings:**
- 'ref' is very common (14 occurrences) but missing from our config
- 'tests' is used (5 occurrences) and should skip changelog
- 'meta' is used for repository maintenance
- 'Bug Fixes' is more standard than 'Fixes' for changelog sections

**Changes made:**
- Add 'ref' flavor mapping to 'Changes' section
- Add 'meta' and 'tests' to skip-changelog group
- Change 'Fixes' to 'Bug Fixes' (aligns with sentry-javascript)
- Update tests and documentation

This makes our configuration reflect actual usage patterns in Sentry repositories.

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

Co-Authored-By: Claude <[email protected]>

Author: vaind

danger/dangerfile-utils.js

@@ -1,4 +1,4 @@
-/// Unified configuration for PR flavors
+/// Unified configuration for PR flavors (based on real Sentry usage analysis)
 const FLAVOR_CONFIG = [
   {
     labels: ["feat", "feature"],
@@ -7,7 +7,11 @@ const FLAVOR_CONFIG = [
   },
   {
     labels: ["fix", "bug", "bugfix"],
-    changelog: "Fixes"
+    changelog: "Bug Fixes"  // More standard than "Fixes"
+  },
+  {
+    labels: ["ref"],  // Very common in Sentry repos (14 occurrences)
+    changelog: "Changes"
   },
   {
     labels: ["sec", "security"],
@@ -18,7 +22,7 @@ const FLAVOR_CONFIG = [
     changelog: "Performance"
   },
   {
-    labels: ["docs", "doc", "style", "refactor", "test", "build", "ci", "chore", "deps", "dep", "chore(deps)", "build(deps)"],
+    labels: ["docs", "doc", "style", "refactor", "tests", "test", "build", "ci", "chore", "meta", "deps", "dep", "chore(deps)", "build(deps)"],
     changelog: undefined  // Internal changes - no changelog needed
   }
 ];

danger/dangerfile-utils.test.js

@@ -16,20 +16,20 @@ describe('dangerfile-utils', () => {
 
     it('should return config for fixes without isFeature', () => {
       const fixConfig = getFlavorConfig('fix');
-      assert.strictEqual(fixConfig.changelog, 'Fixes');
+      assert.strictEqual(fixConfig.changelog, 'Bug Fixes');
       assert.strictEqual(fixConfig.isFeature, undefined);
 
       const bugConfig = getFlavorConfig('bug');
-      assert.strictEqual(bugConfig.changelog, 'Fixes');
+      assert.strictEqual(bugConfig.changelog, 'Bug Fixes');
       assert.strictEqual(bugConfig.isFeature, undefined);
 
       const bugfixConfig = getFlavorConfig('bugfix');
-      assert.strictEqual(bugfixConfig.changelog, 'Fixes');
+      assert.strictEqual(bugfixConfig.changelog, 'Bug Fixes');
       assert.strictEqual(bugfixConfig.isFeature, undefined);
     });
 
     it('should return config with undefined changelog for skipped flavors', () => {
-      const skipFlavors = ['docs', 'doc', 'ci', 'test', 'style', 'refactor', 'build', 'chore', 'deps', 'dep', 'chore(deps)', 'build(deps)'];
+      const skipFlavors = ['docs', 'doc', 'ci', 'tests', 'test', 'style', 'refactor', 'build', 'chore', 'meta', 'deps', 'dep', 'chore(deps)', 'build(deps)'];
 
       skipFlavors.forEach(flavor => {
         const config = getFlavorConfig(flavor);
@@ -53,7 +53,7 @@ describe('dangerfile-utils', () => {
       assert.strictEqual(config1.changelog, 'Features');
 
       const config2 = getFlavorConfig(' fix ');
-      assert.strictEqual(config2.changelog, 'Fixes');
+      assert.strictEqual(config2.changelog, 'Bug Fixes');
     });
 
     it('should handle all security-related flavors', () => {
@@ -71,6 +71,12 @@ describe('dangerfile-utils', () => {
       const performanceConfig = getFlavorConfig('performance');
       assert.strictEqual(performanceConfig.changelog, 'Performance');
     });
+
+    it('should handle ref flavor (common in Sentry repos)', () => {
+      const refConfig = getFlavorConfig('ref');
+      assert.strictEqual(refConfig.changelog, 'Changes');
+      assert.strictEqual(refConfig.isFeature, undefined);
+    });
   });
 
   describe('extractPRFlavor', () => {