fix(conventional-commits): filter releases by date range

- Filter recentReleases array by since/until parameters
- Previously returned all tags regardless of date range
- Add test to verify release date filtering works correctly
- Fixes issue where comparison mode showed incorrect release counts

Author: jonmatum

src/handlers.test.ts

@@ -362,5 +362,34 @@ describe('Handler Functions', () => {
       expect(result.recentReleases[0]).toHaveProperty('tag');
       expect(result.recentReleases[0]).toHaveProperty('date');
     });
+
+    it('should filter releases by date range', () => {
+      // Create a tag in the past (before testDate)
+      const pastDate = new Date(testDate);
+      pastDate.setFullYear(pastDate.getFullYear() - 2);
+      const pastDateStr = pastDate.toISOString().split('T')[0];
+      
+      // Get current tags
+      const beforeResult = handlers.handleGetConventionalCommits({
+        repo_path: conventionalRepo,
+        since: testDate,
+      });
+      
+      // Query with a future date range that shouldn't include current tags
+      const futureDate = new Date();
+      futureDate.setFullYear(futureDate.getFullYear() + 1);
+      const futureDateStr = futureDate.toISOString().split('T')[0];
+      
+      const futureResult = handlers.handleGetConventionalCommits({
+        repo_path: conventionalRepo,
+        since: futureDateStr,
+      });
+      
+      // Should have releases in current date range
+      expect(beforeResult.recentReleases.length).toBeGreaterThan(0);
+      
+      // Should have no releases in future date range
+      expect(futureResult.recentReleases.length).toBe(0);
+    });
   });
 });

src/handlers.ts

@@ -431,12 +431,20 @@ export function handleGetConventionalCommits(args: any) {
 
   const tagsCmd = `git tag --sort=-creatordate --format="%(refname:short)|%(creatordate:short)"`;
   const tagsOutput = runGitCommand(repo_path, tagsCmd);
-  const tags = tagsOutput.trim().split("\n").filter(t => t).slice(0, 20);
-  
-  const releases = tags.map(t => {
-    const [tag, date] = t.split("|");
-    return { tag, date };
-  });
+  const tags = tagsOutput.trim().split("\n").filter(t => t);
+  
+  const releases = tags
+    .map(t => {
+      const [tag, date] = t.split("|");
+      return { tag, date };
+    })
+    .filter(r => {
+      const releaseDate = new Date(r.date);
+      const sinceDate = new Date(since);
+      const untilDate = until ? new Date(until) : new Date();
+      return releaseDate >= sinceDate && releaseDate <= untilDate;
+    })
+    .slice(0, 20);
 
   return {
     totalCommits: lines.length,