fix(claude-do): fix(worker): Interaktive Session auf einem Nicht-Repo-Workin

Eine interaktive ("Quick") Session soll auf Pfaden, die kein Git-Repo sind, keinen Worktree erzwingen, sondern direkt im ausgewählten Ordner starten. Der User hat entschieden: BEIDE Einstiegspunkte prüfen — den task-gebundenen Pfad fixen, den Ad-hoc-Pfad verifizieren.

## Pfad 1 (der eigentliche Fix) — task-gebundene Session

- Einstieg: Kontextmenü der Task-Zeile "Open interactive session" — src/

ClaudeDo-Task: 15e126d564874973be2a5bbe7d796646

src/ClaudeDo.Worker/Hub/WorkerHub.cs

@@ -838,10 +838,11 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
     }
 
     // Builds the launch spec an embedded ConPTY terminal (UI process) needs to open an
-    // interactive Claude session in a task's worktree -- same worktree prep as an
-    // autonomous run (session-skills seeding, run env vars), --resume if the task has a
-    // persisted session or a fresh-start spec otherwise. Guards: no running/queued task,
-    // and (once a worktree exists) it must be live on disk.
+    // interactive Claude session for a task -- same worktree prep as an autonomous run when
+    // the task's list points at a git repo (session-skills seeding, run env vars), or a
+    // worktree-less spec opening directly in the list's WorkingDir when it isn't a repo.
+    // --resume if the task has a persisted session or a fresh-start spec otherwise. Guards:
+    // no running/queued task, and (once a worktree exists) it must be live on disk.
     public Task<LaunchSpec> GetInteractiveLaunchSpec(string taskId) => HubGuard(() =>
     {
         if (_interactiveLaunchSpec is null)

src/ClaudeDo.Worker/Runner/InteractiveLaunchSpecService.cs

@@ -12,13 +12,16 @@ using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
 namespace ClaudeDo.Worker.Runner;
 
 // Builds the launch spec an embedded ConPTY terminal needs to open an interactive Claude
-// session in an existing task's worktree -- the SAME worktree prep as an autonomous run:
-// session-skills seeded onto disk (reuses ISessionSkillSeeder + TaskRunner.UnionSkillNames,
-// exactly like TaskRunner.RunAsync/ContinueAsync) and the same run environment variables
-// (matches ClaudeProcess's MCP_TOOL_TIMEOUT). Exe/Args reuse WindowsTerminalLauncher's
-// --resume argument construction. Guards: no running/queued task, and (once a worktree
-// exists) it must be live on disk -- but a never-run task (no persisted SessionId) is not
-// an error here, it's a fresh-start spec.
+// session for a task -- the SAME worktree prep as an autonomous run when the task's list
+// points at a git repo: session-skills seeded onto disk (reuses ISessionSkillSeeder +
+// TaskRunner.UnionSkillNames, exactly like TaskRunner.RunAsync/ContinueAsync) and the same
+// run environment variables (matches ClaudeProcess's MCP_TOOL_TIMEOUT). When the list's
+// WorkingDir is not a git repo, no worktree is created at all -- the session opens directly
+// in that directory (session-skills seeded there too, but isWorktree: false so no
+// .git/info/exclude write is attempted). Exe/Args reuse WindowsTerminalLauncher's --resume
+// argument construction. Guards: no running/queued task, and (once a worktree exists) it
+// must be live on disk -- but a never-run task (no persisted SessionId) is not an error
+// here, it's a fresh-start spec.
 //
 // The run-scoped "claudedo_run" MCP server (AskUser/SuggestImprovement) that TaskRunner
 // wires per headless run is intentionally NOT reused: it exists so an unattended run can
@@ -67,25 +70,53 @@ public sealed class InteractiveLaunchSpecService : IInteractiveLaunchSpecService
 
         var worktree = await new WorktreeRepository(ctx).GetByTaskIdAsync(taskId, ct);
         var isFreshWorktree = false;
+        string sessionDir;
+        bool sessionIsWorktree;
 
         if (worktree is null || worktree.State is not (WorktreeState.Active or WorktreeState.Kept))
         {
             // No usable worktree yet -- if the task's list points at a git repo, create one
             // on demand via the SAME mechanism an autonomous run uses (WorktreeManager.CreateAsync:
             // branch naming, base commit resolution, worktree-root strategy, DB registration).
+            // If the list's directory isn't a git repo at all, there is nothing to branch from --
+            // open the session directly in that directory instead, worktree-less. This mirrors an
+            // existing shape in the codebase (a list-handler task also has no worktree and commits
+            // straight to the list's working dir), so no WorktreeEntity is created here either.
             var list = await new ListRepository(ctx).GetByIdAsync(task.ListId, ct);
             if (list?.WorkingDir is null)
                 throw new InvalidOperationException("This task has no working directory configured -- can't create a worktree.");
 
-            await _wtManager.CreateAsync(task, list, ct);
-            worktree = await new WorktreeRepository(ctx).GetByTaskIdAsync(taskId, ct)
-                ?? throw new InvalidOperationException("Worktree creation did not persist a worktree row.");
-            isFreshWorktree = true;
+            if (await _git.IsGitRepoAsync(list.WorkingDir, ct))
+            {
+                // A stale (Merged/Discarded) row is already tracked in `ctx`'s identity map from
+                // the read above -- CreateAsync replaces it via its OWN context, so re-querying on
+                // `ctx` without detaching first would hand back the old cached instance instead of
+                // the freshly created row.
+                if (worktree is not null)
+                    ctx.Entry(worktree).State = EntityState.Detached;
+
+                await _wtManager.CreateAsync(task, list, ct);
+                worktree = await new WorktreeRepository(ctx).GetByTaskIdAsync(taskId, ct)
+                    ?? throw new InvalidOperationException("Worktree creation did not persist a worktree row.");
+                isFreshWorktree = true;
+                sessionDir = worktree.Path;
+                sessionIsWorktree = true;
+            }
+            else
+            {
+                sessionDir = list.WorkingDir;
+                sessionIsWorktree = false;
+            }
         }
         else if (!Directory.Exists(worktree.Path))
         {
             throw new InvalidOperationException("The task's worktree directory no longer exists.");
         }
+        else
+        {
+            sessionDir = worktree.Path;
+            sessionIsWorktree = true;
+        }
 
         var listConfig = await new ListRepository(ctx).GetConfigAsync(task.ListId, ct);
         var globalSettings = await new AppSettingsRepository(ctx).GetAsync(ct);
@@ -95,7 +126,7 @@ public sealed class InteractiveLaunchSpecService : IInteractiveLaunchSpecService
 
         var requestedSkills = TaskRunner.UnionSkillNames(task.SessionSkills, listConfig?.SessionSkills, globalSettings.SessionSkills);
         var skillNames = await FilterToInstalledSkillsAsync(requestedSkills, ct);
-        await _skillSeeder.SeedAsync(worktree.Path, skillNames, isWorktree: true, ct);
+        await _skillSeeder.SeedAsync(sessionDir, skillNames, isWorktree: sessionIsWorktree, ct);
 
         var resolvedClaude = WindowsTerminalLauncher.Resolve(_claudePath)
             ?? throw new InvalidOperationException($"claude executable not found: {_claudePath}");
@@ -138,7 +169,7 @@ public sealed class InteractiveLaunchSpecService : IInteractiveLaunchSpecService
             ["MCP_TOOL_TIMEOUT"] = McpToolTimeoutMs,
         };
 
-        return new LaunchSpec(worktree.Path, resolvedClaude, args, env);
+        return new LaunchSpec(sessionDir, resolvedClaude, args, env);
     }
 
     public LaunchSpec BuildPlanningStart(PlanningSessionStartContext ctx)