refactor(git): share the info/exclude writer with the findings store

src/ClaudeDo.Worker/Findings/FindingsStore.cs

@@ -1,5 +1,6 @@
 using System.Text;
 using System.Text.RegularExpressions;
+using ClaudeDo.Worker.Git;
 
 namespace ClaudeDo.Worker.Findings;
 
@@ -21,7 +22,8 @@ public sealed class FindingsStore : IFindingsStore
     public static string TrapsDir(string workingDir) => Path.Combine(StoreDir(workingDir), "traps");
     public static string IndexPath(string workingDir) => Path.Combine(StoreDir(workingDir), "INDEX.md");
 
-    public async Task<SaveFindingOutcome> SaveAsync(string workingDir, FindingInput input, CancellationToken ct)
+    public async Task<SaveFindingOutcome> SaveAsync(
+        string workingDir, FindingInput input, CancellationToken ct, bool tracked = false)
     {
         if (string.IsNullOrWhiteSpace(input.Slug) || input.Slug.Length > 60 || !SlugPattern.IsMatch(input.Slug))
             throw new ArgumentException(
@@ -35,6 +37,9 @@ public sealed class FindingsStore : IFindingsStore
         var trapsDir = TrapsDir(workingDir);
         Directory.CreateDirectory(trapsDir);
 
+        if (!tracked)
+            await GitExcludeWriter.AppendLineAsync(workingDir, "/.claudedo/", ct);
+
         var path = Path.Combine(trapsDir, input.Slug + ".md");
         var created = !File.Exists(path);
 

src/ClaudeDo.Worker/Findings/Interfaces/IFindingsStore.cs

@@ -18,5 +18,5 @@ public sealed record SaveFindingOutcome(
 
 public interface IFindingsStore
 {
-    Task<SaveFindingOutcome> SaveAsync(string workingDir, FindingInput input, CancellationToken ct);
+    Task<SaveFindingOutcome> SaveAsync(string workingDir, FindingInput input, CancellationToken ct, bool tracked = false);
 }