Make meeting lifecycle stateful

MeetingAssistant/Summary/MeetingSummaryInstructionBuilder.cs

@@ -1,6 +1,5 @@
 using MeetingAssistant.MeetingNotes;
 using Microsoft.Extensions.Options;
-using YamlDotNet.Serialization;
 
 namespace MeetingAssistant.Summary;
 
@@ -21,25 +20,31 @@ public sealed class MeetingSummaryInstructionBuilder : IMeetingSummaryInstructio
         Keep the output grounded in the source material and explicitly say when a section has no known items.
         """;
 
-    private static readonly IDeserializer YamlDeserializer = new DeserializerBuilder()
-        .IgnoreUnmatchedProperties()
-        .Build();
-
     private readonly MeetingAssistantOptions options;
+    private readonly BoundMeetingProjectResolver projectResolver;
 
     public MeetingSummaryInstructionBuilder(IOptions<MeetingAssistantOptions> options)
     {
         this.options = options.Value;
+        projectResolver = new BoundMeetingProjectResolver(this.options);
     }
 
     public async Task<string> BuildAsync(
         MeetingSessionArtifacts artifacts,
         CancellationToken cancellationToken)
+    {
+        return await BuildAsync(artifacts, options, cancellationToken);
+    }
+
+    public async Task<string> BuildAsync(
+        MeetingSessionArtifacts artifacts,
+        MeetingAssistantOptions options,
+        CancellationToken cancellationToken)
     {
         var instructions = string.IsNullOrWhiteSpace(options.Agent.InitialPrompt)
             ? DefaultInitialPrompt
             : options.Agent.InitialPrompt.Trim();
-        var projectInstructions = await BuildProjectInstructionsAsync(artifacts, cancellationToken);
+        var projectInstructions = await BuildProjectInstructionsAsync(artifacts, options, cancellationToken);
         return string.IsNullOrWhiteSpace(projectInstructions)
             ? instructions
             : instructions.TrimEnd() + "\n\n" + projectInstructions;
@@ -47,9 +52,10 @@ public sealed class MeetingSummaryInstructionBuilder : IMeetingSummaryInstructio
 
     private async Task<string> BuildProjectInstructionsAsync(
         MeetingSessionArtifacts artifacts,
+        MeetingAssistantOptions options,
         CancellationToken cancellationToken)
     {
-        var projects = await GetBoundProjectsWithInstructionsAsync(artifacts, cancellationToken);
+        var projects = await GetBoundProjectsWithInstructionsAsync(artifacts, options, cancellationToken);
         if (projects.Count == 0)
         {
             return "";
@@ -62,30 +68,16 @@ public sealed class MeetingSummaryInstructionBuilder : IMeetingSummaryInstructio
 
     private async Task<List<ProjectInstructions>> GetBoundProjectsWithInstructionsAsync(
         MeetingSessionArtifacts artifacts,
+        MeetingAssistantOptions options,
         CancellationToken cancellationToken)
     {
-        var projectNames = await ReadMeetingProjectNamesAsync(artifacts.MeetingNotePath, cancellationToken);
-        if (projectNames.Count == 0)
-        {
-            return [];
-        }
-
-        var projectsRoot = VaultPath.Resolve(options.Vault, options.Vault.ProjectsFolder);
-        if (!Directory.Exists(projectsRoot))
-        {
-            return [];
-        }
-
+        var resolver = ReferenceEquals(options, this.options)
+            ? projectResolver
+            : new BoundMeetingProjectResolver(options);
         var projects = new List<ProjectInstructions>();
-        foreach (var projectDirectory in Directory.EnumerateDirectories(projectsRoot).Order(StringComparer.OrdinalIgnoreCase))
+        foreach (var project in await resolver.GetBoundProjectsAsync(artifacts, cancellationToken))
         {
-            var projectName = Path.GetFileName(projectDirectory);
-            if (!projectNames.Contains(projectName))
-            {
-                continue;
-            }
-
-            var agentsPath = Path.Combine(projectDirectory, "AGENTS.md");
+            var agentsPath = Path.Combine(project.Path, "AGENTS.md");
             if (!File.Exists(agentsPath))
             {
                 continue;
@@ -94,42 +86,12 @@ public sealed class MeetingSummaryInstructionBuilder : IMeetingSummaryInstructio
             var content = await File.ReadAllTextAsync(agentsPath, cancellationToken);
             if (!string.IsNullOrWhiteSpace(content))
             {
-                projects.Add(new ProjectInstructions(projectName, content));
+                projects.Add(new ProjectInstructions(project.Name, content));
             }
         }
 
         return projects;
     }
 
-    private static async Task<HashSet<string>> ReadMeetingProjectNamesAsync(
-        string meetingNotePath,
-        CancellationToken cancellationToken)
-    {
-        if (!File.Exists(meetingNotePath))
-        {
-            return [];
-        }
-
-        var content = await File.ReadAllTextAsync(meetingNotePath, cancellationToken);
-        var document = MarkdownDocumentParser.SplitOptional(content);
-        if (!document.HasFrontmatter)
-        {
-            return [];
-        }
-
-        var frontmatter = YamlDeserializer.Deserialize<ProjectFrontmatter>(document.Frontmatter)
-            ?? new ProjectFrontmatter();
-        return (frontmatter.Projects ?? [])
-            .Where(project => !string.IsNullOrWhiteSpace(project))
-            .Select(project => project.Trim())
-            .ToHashSet(StringComparer.OrdinalIgnoreCase);
-    }
-
     private sealed record ProjectInstructions(string Name, string Instructions);
-
-    private sealed class ProjectFrontmatter
-    {
-        [YamlMember(Alias = "projects")]
-        public List<string>? Projects { get; set; }
-    }
 }