docs(plan): foundation + Layer A plan and Layer B/C parallel kickoff prompts

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-05 10:15:52 +02:00
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+# Git Merge/Review — Shared Foundation + Layer A Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Build the shared worker conflict contract (so parallel Layer B/C sessions branch from frozen interfaces) and rework the Git tab into a single Approve+merge cockpit.
+
+**Architecture:** Phase 0 adds the conflict-resolution contract to `IWorkerClient`/`WorkerClient` (real `_hub.InvokeAsync` bodies — the worker hub methods are implemented later by Layer C; calls simply fail at runtime until then) plus client-side DTOs and test-fake updates, then commits + pushes so B and C branch from it. Phase A reworks `WorkConsole.axaml`'s Git tab and routes single-task merge/approve conflicts into a `RequestConflictResolution` seam (wired to Layer C's resolver by the integrator at merge time).
+
+**Tech Stack:** .NET 8, Avalonia 12 (Fluent), CommunityToolkit.Mvvm, SignalR, xUnit. Build individual csproj with `-c Release` (`.slnx` needs .NET 9; a running Worker locks `Debug`).
+
+**Reference spec:** `docs/superpowers/specs/2026-06-05-git-merge-review-rework-design.md`
+
+**Note on the canonical diff renderer:** the unified diff model/control already exists — `DiffFileViewModel`/`DiffLineViewModel`/`UnifiedDiffParser` (in `src/ClaudeDo.Ui/ViewModels/Modals/`) rendered by `DiffLinesView` (`src/ClaudeDo.Ui/Views/Controls/DiffLinesView.axaml`). `DiffModalView` and `PlanningDiffView` already use it. So "consolidate diff renderers" for this scope is just verifying that (Task A.3); migrating `WorktreeModalView`'s bespoke diff onto `DiffLinesView` is Layer B's job.
+
+---
+
+## File Structure
+
+**Phase 0 (foundation — pushed before B/C branch):**
+- Modify `src/ClaudeDo.Ui/Services/Interfaces/IWorkerClient.cs` — 5 new method signatures.
+- Modify `src/ClaudeDo.Ui/Services/WorkerClient.cs` — 5 `InvokeAsync` bodies + 3 new DTO records.
+- Modify `tests/ClaudeDo.Ui.Tests/StubWorkerClient.cs` — 5 new `virtual` no-op methods.
+- Modify `tests/ClaudeDo.Worker.Tests/UiVm/TasksIslandViewModelPlanningTests.cs` — 5 new methods on `FakeWorkerClient`.
+
+**Phase A (Layer A — this session, after foundation commit):**
+- Modify `src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs` — `RequestConflictResolution` seam; route Approve/Merge conflicts into it.
+- Modify `src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml` — fuse REVIEW + MERGE sections into one cockpit block.
+- Test: `tests/ClaudeDo.Ui.Tests/ViewModels/DetailsIslandPlanningTests.cs` (or a sibling test file in the same folder).
+
+---
+
+## Phase 0 — Shared Foundation
+
+### Task 0.1: Add the conflict contract (interface + client + DTOs)
+
+**Files:**
+- Modify: `src/ClaudeDo.Ui/Services/Interfaces/IWorkerClient.cs`
+- Modify: `src/ClaudeDo.Ui/Services/WorkerClient.cs`
+
+- [ ] **Step 1: Add the 5 method signatures to `IWorkerClient`**
+
+In `src/ClaudeDo.Ui/Services/Interfaces/IWorkerClient.cs`, after the existing
+`Task CancelReviewAsync(string taskId);` line (line 45), add:
+
+```csharp
+    // ── Conflict resolution (worker hub side implemented by Layer C) ──
+    Task<MergeResultDto> StartConflictMergeAsync(string taskId, string targetBranch);
+    Task<MergeConflictsDto> GetMergeConflictsAsync(string taskId);
+    Task WriteConflictResolutionAsync(string taskId, string path, string resolvedContent);
+    Task<MergeResultDto> ContinueMergeAsync(string taskId);
+    Task AbortMergeAsync(string taskId);
+```
+
+- [ ] **Step 2: Add the 3 DTO records to `WorkerClient.cs`**
+
+In `src/ClaudeDo.Ui/Services/WorkerClient.cs`, immediately after line 534
+(`public record MergeTargetsDto(...)`), add:
+
+```csharp
+public record MergeConflictsDto(string TaskId, IReadOnlyList<ConflictFileDto> Files);
+public record ConflictFileDto(string Path, IReadOnlyList<ConflictHunkDto> Hunks);
+public record ConflictHunkDto(string Ours, string Theirs, string? Base);
+```
+
+- [ ] **Step 3: Add the 5 client method bodies to `WorkerClient.cs`**
+
+In `src/ClaudeDo.Ui/Services/WorkerClient.cs`, right after the `MergeTaskAsync`
+method (ends at line 270), add:
+
+```csharp
+    public Task<MergeResultDto> StartConflictMergeAsync(string taskId, string targetBranch)
+        => _hub.InvokeAsync<MergeResultDto>("StartConflictMerge", taskId, targetBranch);
+
+    public Task<MergeConflictsDto> GetMergeConflictsAsync(string taskId)
+        => _hub.InvokeAsync<MergeConflictsDto>("GetMergeConflicts", taskId);
+
+    public Task WriteConflictResolutionAsync(string taskId, string path, string resolvedContent)
+        => _hub.InvokeAsync("WriteConflictResolution", taskId, path, resolvedContent);
+
+    public Task<MergeResultDto> ContinueMergeAsync(string taskId)
+        => _hub.InvokeAsync<MergeResultDto>("ContinueMerge", taskId);
+
+    public Task AbortMergeAsync(string taskId)
+        => _hub.InvokeAsync("AbortMerge", taskId);
+```
+
+- [ ] **Step 4: Build the UI project**
+
+Run: `dotnet build src/ClaudeDo.Ui/ClaudeDo.Ui.csproj -c Release`
+Expected: build FAILS — the two test projects won't compile yet, but the UI project
+itself should succeed. If the UI project reports "does not implement interface member"
+it means a body is missing; fix before continuing. (Test projects are fixed in 0.2.)
+
+### Task 0.2: Update the hand-rolled test fakes
+
+**Files:**
+- Modify: `tests/ClaudeDo.Ui.Tests/StubWorkerClient.cs`
+- Modify: `tests/ClaudeDo.Worker.Tests/UiVm/TasksIslandViewModelPlanningTests.cs`
+
+- [ ] **Step 1: Add 5 virtual no-ops to `StubWorkerClient`**
+
+In `tests/ClaudeDo.Ui.Tests/StubWorkerClient.cs`, after the `MergeTaskAsync` override
+(line 57), add:
+
+```csharp
+    public virtual Task<MergeResultDto> StartConflictMergeAsync(string taskId, string targetBranch) => Task.FromResult(new MergeResultDto("conflict", System.Array.Empty<string>(), null));
+    public virtual Task<MergeConflictsDto> GetMergeConflictsAsync(string taskId) => Task.FromResult(new MergeConflictsDto(taskId, System.Array.Empty<ConflictFileDto>()));
+    public virtual Task WriteConflictResolutionAsync(string taskId, string path, string resolvedContent) => Task.CompletedTask;
+    public virtual Task<MergeResultDto> ContinueMergeAsync(string taskId) => Task.FromResult(new MergeResultDto("merged", System.Array.Empty<string>(), null));
+    public virtual Task AbortMergeAsync(string taskId) => Task.CompletedTask;
+```
+
+- [ ] **Step 2: Add 5 methods to `FakeWorkerClient`**
+
+In `tests/ClaudeDo.Worker.Tests/UiVm/TasksIslandViewModelPlanningTests.cs`, after the
+`MergeTaskAsync` method (line 47), add:
+
+```csharp
+    public Task<MergeResultDto> StartConflictMergeAsync(string taskId, string targetBranch) => Task.FromResult(new MergeResultDto("conflict", System.Array.Empty<string>(), null));
+    public Task<MergeConflictsDto> GetMergeConflictsAsync(string taskId) => Task.FromResult(new MergeConflictsDto(taskId, System.Array.Empty<ConflictFileDto>()));
+    public Task WriteConflictResolutionAsync(string taskId, string path, string resolvedContent) => Task.CompletedTask;
+    public Task<MergeResultDto> ContinueMergeAsync(string taskId) => Task.FromResult(new MergeResultDto("merged", System.Array.Empty<string>(), null));
+    public Task AbortMergeAsync(string taskId) => Task.CompletedTask;
+```
+
+- [ ] **Step 3: Build both test projects**
+
+Run: `dotnet build tests/ClaudeDo.Ui.Tests/ClaudeDo.Ui.Tests.csproj -c Release && dotnet build tests/ClaudeDo.Worker.Tests/ClaudeDo.Worker.Tests.csproj -c Release`
+Expected: both BUILD succeed.
+
+- [ ] **Step 4: Run the UI test suite to confirm green baseline**
+
+Run: `dotnet test tests/ClaudeDo.Ui.Tests/ClaudeDo.Ui.Tests.csproj -c Release`
+Expected: PASS (no behavior changed yet).
+
+### Task 0.3: Commit and push the foundation
+
+- [ ] **Step 1: Commit**
+
+```bash
+git add src/ClaudeDo.Ui/Services/Interfaces/IWorkerClient.cs src/ClaudeDo.Ui/Services/WorkerClient.cs tests/ClaudeDo.Ui.Tests/StubWorkerClient.cs tests/ClaudeDo.Worker.Tests/UiVm/TasksIslandViewModelPlanningTests.cs
+git commit -m "feat(ui): add conflict-resolution worker contract (foundation for merge rework)"
+```
+
+- [ ] **Step 2: Push so Layer B/C can branch from this commit**
+
+Run: `git push`
+Expected: pushed to `main`. (First push to git.kuns.dev may fail auth — retry once.)
+**This commit is the branch point for the Layer B and Layer C kickoff prompts.**
+
+---
+
+## Phase A — Layer A Review/Merge Cockpit
+
+### Task A.1: Conflict-resolution seam + route Approve/Merge conflicts into it (TDD)
+
+**Files:**
+- Modify: `src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs`
+- Test: `tests/ClaudeDo.Ui.Tests/ViewModels/DetailsIslandConflictSeamTests.cs` (new)
+
+- [ ] **Step 1: Write the failing test**
+
+Create `tests/ClaudeDo.Ui.Tests/ViewModels/DetailsIslandConflictSeamTests.cs`. Mirror
+the VM-construction harness used in
+`tests/ClaudeDo.Ui.Tests/ViewModels/DetailsIslandPlanningTests.cs` (same folder) —
+construct `DetailsIslandViewModel` exactly as that file does, including its
+`StubWorkerClient` subclass pattern. The test:
+
+```csharp
+[Fact]
+public async Task ApproveReview_OnConflict_InvokesConflictResolutionSeam()
+{
+    string? resolvedTaskId = null;
+    string? resolvedTarget = null;
+
+    // Construct the VM as in DetailsIslandPlanningTests, with a worker stub whose
+    // ApproveReviewAsync returns a conflict result:
+    //   public override Task<MergeResultDto?> ApproveReviewAsync(string id, string target)
+    //       => Task.FromResult<MergeResultDto?>(new MergeResultDto("conflict", new[]{"a.cs"}, null));
+    var vm = CreateVm(/* worker stub above */);
+    vm.RequestConflictResolution = (taskId, target) =>
+    {
+        resolvedTaskId = taskId; resolvedTarget = target;
+        return System.Threading.Tasks.Task.CompletedTask;
+    };
+    // assign a task in WaitingForReview + a SelectedMergeTarget = "main" via the same
+    // helpers DetailsIslandPlanningTests uses.
+
+    await vm.ApproveReviewCommand.ExecuteAsync(null);
+
+    Assert.Equal(/* the seeded task id */, resolvedTaskId);
+    Assert.Equal("main", resolvedTarget);
+}
+```
+
+- [ ] **Step 2: Run the test to verify it fails**
+
+Run: `dotnet test tests/ClaudeDo.Ui.Tests/ClaudeDo.Ui.Tests.csproj -c Release --filter ApproveReview_OnConflict_InvokesConflictResolutionSeam`
+Expected: FAIL — `RequestConflictResolution` property does not exist (compile error).
+
+- [ ] **Step 3: Add the seam property**
+
+In `src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs`, beside the other
+view-wired delegates (`ShowDiffModal`, `ShowMergeModal` around line 387–390), add:
+
+```csharp
+    // Invoked when a single-task merge/approve hits a conflict. Wired by the
+    // integrator to Layer C's conflict resolver. Args: (taskId, targetBranch).
+    public Func<string, string, System.Threading.Tasks.Task>? RequestConflictResolution { get; set; }
+```
+
+- [ ] **Step 4: Route the Approve conflict branch into the seam**
+
+In `ApproveReviewAsync` (around line 1453), replace the conflict branch body so it
+prefers the seam, falling back to the current preview-text behavior:
+
+```csharp
+            var result = await _worker.ApproveReviewAsync(Task.Id, SelectedMergeTarget ?? "");
+            if (result?.Status == "conflict")
+            {
+                if (RequestConflictResolution is not null)
+                {
+                    await RequestConflictResolution(Task.Id, SelectedMergeTarget ?? "");
+                }
+                else
+                {
+                    var (text, _, _) = MergePreviewPresenter.Describe(
+                        new MergePreviewDto("conflict", result.ConflictFiles, 0));
+                    MergePreviewText = text; MergeIsClean = false; MergeIsConflict = true;
+                }
+            }
+```
+
+- [ ] **Step 5: Route the manual Merge conflict branch into the seam**
+
+In `MergeAsync` (around line 1170), apply the same pattern to its conflict branch:
+
+```csharp
+            var result = await _worker.MergeTaskAsync(Task.Id, SelectedMergeTarget ?? "", false, "Merge task");
+            if (result.Status == "conflict")
+            {
+                if (RequestConflictResolution is not null)
+                {
+                    await RequestConflictResolution(Task.Id, SelectedMergeTarget ?? "");
+                }
+                else
+                {
+                    var (text, _, _) = MergePreviewPresenter.Describe(
+                        new MergePreviewDto("conflict", result.ConflictFiles, 0));
+                    MergePreviewText = text; MergeIsClean = false; MergeIsConflict = true;
+                }
+            }
+            else
+            {
+                await RefreshMergePreviewAsync();
+            }
+```
+
+- [ ] **Step 6: Run the test to verify it passes**
+
+Run: `dotnet test tests/ClaudeDo.Ui.Tests/ClaudeDo.Ui.Tests.csproj -c Release --filter ApproveReview_OnConflict_InvokesConflictResolutionSeam`
+Expected: PASS.
+
+- [ ] **Step 7: Run the full UI suite (no regressions)**
+
+Run: `dotnet test tests/ClaudeDo.Ui.Tests/ClaudeDo.Ui.Tests.csproj -c Release`
+Expected: PASS.
+
+- [ ] **Step 8: Commit**
+
+```bash
+git add src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs tests/ClaudeDo.Ui.Tests/ViewModels/DetailsIslandConflictSeamTests.cs
+git commit -m "feat(ui): route single-task merge conflicts into a resolution seam"
+```
+
+### Task A.2: Fuse the Git tab into one Approve+merge cockpit
+
+**Files:**
+- Modify: `src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml`
+
+- [ ] **Step 1: Replace the two Git-tab sections with one cockpit block**
+
+In `src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml`, replace the entire Git
+`ScrollViewer` body (lines 255–313 — the `<!-- Git: ... -->` block containing the
+separate `REVIEW` `StackPanel` and the `MERGE & WORKTREE` `StackPanel`) with a single
+cockpit where Approve sits with the merge target/preview/actions. Keep the existing
+control class names (`section-label`, `field-label`, `btn`, `btn accent`, `meta`) and
+the existing bindings (`SelectedMergeTarget`, `MergeTargetBranches`, `MergePreviewText`,
+`MergeIsClean`, `MergeIsConflict`, `ShowMergePreviewMuted`, `OpenDiffCommand`,
+`ApproveReviewCommand`, `MergeCommand`, `ShowSingleMerge`, `OpenWorktreeCommand`,
+`ReviewCombinedDiffCommand`, `MergeAllCommand`, `CanMergeAll`, `MergeAllDisabledReason`,
+`MergeAllError`):
+
+```xml
+        <!-- Git: one Approve + merge cockpit -->
+        <ScrollViewer IsVisible="{Binding IsGitTab}" Padding="14,10">
+          <StackPanel Spacing="12" IsVisible="{Binding ShowMergeSection}">
+            <TextBlock Classes="section-label" Text="MERGE" />
+
+            <StackPanel Spacing="4">
+              <TextBlock Classes="field-label" Text="Target branch" />
+              <ComboBox ItemsSource="{Binding MergeTargetBranches}"
+                        SelectedItem="{Binding SelectedMergeTarget, Mode=TwoWay}"
+                        HorizontalAlignment="Stretch" />
+            </StackPanel>
+
+            <StackPanel Spacing="0">
+              <TextBlock Classes="meta" Text="{Binding MergePreviewText}" TextWrapping="Wrap"
+                         Foreground="{DynamicResource MossBrush}"
+                         IsVisible="{Binding MergeIsClean}" />
+              <TextBlock Classes="meta" Text="{Binding MergePreviewText}" TextWrapping="Wrap"
+                         Foreground="{DynamicResource BloodBrush}"
+                         IsVisible="{Binding MergeIsConflict}" />
+              <TextBlock Classes="meta" Text="{Binding MergePreviewText}" TextWrapping="Wrap"
+                         Foreground="{DynamicResource TextMuteBrush}"
+                         IsVisible="{Binding ShowMergePreviewMuted}" />
+            </StackPanel>
+
+            <!-- Primary action: Approve flows straight into the merge.
+                 Approve is the review-gated path; the plain Merge button covers
+                 already-reviewed / kept worktrees. -->
+            <WrapPanel Orientation="Horizontal">
+              <Button Classes="btn accent" Content="Approve &amp; Merge" Margin="0,0,8,8"
+                      Command="{Binding ApproveReviewCommand}"
+                      IsVisible="{Binding IsWaitingForReview}" />
+              <Button Classes="btn accent" Content="Merge" Margin="0,0,8,8"
+                      Command="{Binding MergeCommand}"
+                      IsVisible="{Binding ShowSingleMerge}" />
+              <Button Classes="btn" Content="Open Diff" Margin="0,0,8,8"
+                      Command="{Binding OpenDiffCommand}" />
+              <Button Classes="btn" Margin="0,0,8,8"
+                      Command="{Binding OpenWorktreeCommand}">
+                <StackPanel Orientation="Horizontal" Spacing="5">
+                  <TextBlock Text="Worktree" />
+                  <PathIcon Data="{StaticResource Icon.ArrowOut}" Width="11" Height="11" />
+                </StackPanel>
+              </Button>
+              <Button Classes="btn" Content="Review Combined Diff" Margin="0,0,8,8"
+                      Command="{Binding ReviewCombinedDiffCommand}" />
+              <Button Classes="btn accent" Content="Merge All Subtasks" Margin="0,0,0,8"
+                      Command="{Binding MergeAllCommand}"
+                      IsEnabled="{Binding CanMergeAll}"
+                      ToolTip.Tip="{Binding MergeAllDisabledReason}" />
+            </WrapPanel>
+
+            <TextBlock Text="{Binding MergeAllError}"
+                       Foreground="{DynamicResource BloodBrush}"
+                       TextWrapping="Wrap"
+                       IsVisible="{Binding MergeAllError,
+                           Converter={x:Static ObjectConverters.IsNotNull}}" />
+          </StackPanel>
+        </ScrollViewer>
+```
+
+Note: the cockpit now shows whenever `ShowMergeSection` is true. `ShowMergeSection`
+(DetailsIslandViewModel line 161) must be true while `IsWaitingForReview` so the
+Approve button appears. Check its expression in Step 2.
+
+- [ ] **Step 2: Verify `ShowMergeSection` covers the review state**
+
+Read `src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs` line 161. If
+`ShowMergeSection` is false while `IsWaitingForReview` (e.g. it requires a non-review
+state), widen it to also be true when `IsWaitingForReview && WorktreePath != null`, and
+ensure `OnPropertyChanged(nameof(ShowMergeSection))` already fires on the relevant state
+transitions (it is notified via `NotifySessionSections`). Make the minimal change needed
+so the Approve button is visible in review state. If it already covers review, change
+nothing.
+
+- [ ] **Step 3: Build the app project**
+
+Run: `dotnet build src/ClaudeDo.App/ClaudeDo.App.csproj -c Release`
+Expected: BUILD succeeds (pulls in Ui + Data).
+
+- [ ] **Step 4: Visual verification (manual — flag for the user)**
+
+This is an AXAML layout change with no automated coverage. Launch the app, open a task
+in `WaitingForReview`, open the Git tab, and confirm: the single MERGE block shows the
+target combo, the colored preview line, an "Approve & Merge" button (review state), and
+the diff/worktree/combined/merge-all actions. **Explicitly tell the user this needs a
+visual pass — do not claim it works without running it.**
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs
+git commit -m "feat(ui): fuse git tab into one approve+merge cockpit"
+```
+
+### Task A.3: Verify diff-renderer consolidation
+
+**Files:** none modified (verification only).
+
+- [ ] **Step 1: Confirm DiffModal + Planning already use the canonical renderer**
+
+Run: `rg -l "DiffLinesView" src/ClaudeDo.Ui/Views`
+Expected: matches in `Modals/DiffModalView.axaml` and `Planning/PlanningDiffView.axaml`.
+If `PlanningDiffView.axaml` does NOT use `DiffLinesView`, change its diff `ItemsControl`
+to a `<controls:DiffLinesView Lines="{Binding SelectedFile.Lines}" />` (matching
+`DiffModalView.axaml`'s usage) and rebuild the App project. If both already use it, this
+task is a no-op — record that and move on. (`WorktreeModalView`'s bespoke diff is
+intentionally left for Layer B.)
+
+---
+
+## Self-Review
+
+- **Spec coverage:** Foundation contract (spec §"Frozen worker conflict contract") →
+  Task 0.1. Test fakes (spec parallel-boundaries row) → Task 0.2. Branch point (spec
+  §"built & pushed this session") → Task 0.3. Layer A cockpit + Approve/merge flow
+  together (spec §"Layer A") → Task A.2. Single-task approve-on-conflict opens resolver
+  via seam (spec §"Layer A" + §"integration seams") → Task A.1. Diff consolidation
+  (spec §"One diff model") → Task A.3. Output-footer feedback unchanged → not touched
+  (correct). No spec requirement left unmapped for this session's scope.
+- **Placeholder scan:** none — every code step has concrete code; the only "mirror the
+  existing harness" reference (Task A.1 Step 1) points at a real file with a working
+  pattern, not a TODO.
+- **Type consistency:** `MergeConflictsDto`/`ConflictFileDto`/`ConflictHunkDto` and the
+  5 method names match between `IWorkerClient` (0.1 Step 1), `WorkerClient` (0.1 Steps
+  2–3), and both fakes (0.2). The seam `RequestConflictResolution` is
+  `Func<string,string,Task>?` everywhere (A.1 Steps 1, 3–5). DTO field names match the
+  spec.
+
+---
+
+## Integration notes (for the integrator merging A + B + C)
+
+- Wire `DetailsIslandViewModel.RequestConflictResolution` and Layer B's equivalent
+  callback to Layer C's `ConflictResolverViewModel` factory + `ShowConflictResolver`
+  dialog delegate.
+- Layer C implements the worker hub methods `StartConflictMerge`, `GetMergeConflicts`,
+  `WriteConflictResolution`, `ContinueMerge`, `AbortMerge`; the client side from Task
+  0.1 already calls them by name.