chore(claude-do): merge Unit-Branch Teil 1: Branch-Naming + Basis-Branch pro Liste

ClaudeDo-Task: e202e601-64c0-4ecb-8dc9-2fb0da01a84a

src/ClaudeDo.Data/CLAUDE.md

@@ -16,7 +16,7 @@ Shared data layer: models, repositories, SQLite infrastructure, and git operatio
   - `Color` (`color`, nullable) — dot colour: a swatch key (`Swatch3`), a literal `#RRGGBB`, or null = the hash-derived identity colour. Same value format as `ListFolderEntity.Color`; resolved UI-side by `ColorBrushConverter`.
   - `FolderId` (`folder_id`, nullable FK → `list_folders.id`, `ON DELETE SET NULL`) — the sidebar folder the list sits in; null = top level. Written only by the UI (`ListsIslandViewModel` drag/context menu), never by MCP.
 - **ListFolderEntity** — Id, Name, Icon, SortOrder, IsCollapsed, ParentFolderId, CreatedAt → `list_folders`. A pure sidebar grouping: no tasks, no config, no working dir. `ParentFolderId` (self-FK, `ON DELETE SET NULL`) lets folders nest arbitrarily deep — drag-and-drop only, no UI to pick a parent otherwise. Deliberately its own table rather than a flag on `lists`, so every caller that enumerates lists (MCP `list_task_lists`, "move to list", the queue picker, repo import) needs no folder filtering. Folder CRUD lives on `ListRepository`.
-- **ListConfigEntity** — ListId (PK, 1:1), Model, SystemPrompt, AgentPath, MaxTurns, SessionSkills, VerifyCommand, PermissionMode, TicketProjectId (all nullable). `VerifyCommand` is an optional post-merge gate; null/blank = no gate → [review-merge](../../docs/explore-notes/review-merge.md). `PermissionMode` is null = inherit the global default; resolution order task → list → global lives in `EffectiveRunConfigResolver`. `TicketProjectId` (`ticket_project_id`) links the list to a project in the external ticket system; null = not linked → `ClaudeDo.Worker/CLAUDE.md` Tickets section.
+- **ListConfigEntity** — ListId (PK, 1:1), Model, SystemPrompt, AgentPath, MaxTurns, SessionSkills, VerifyCommand, PermissionMode, TicketProjectId, BaseBranch (all nullable), PowerUseAllowed. `VerifyCommand` is an optional post-merge gate; null/blank = no gate → [review-merge](../../docs/explore-notes/review-merge.md). `PermissionMode` is null = inherit the global default; resolution order task → list → global lives in `EffectiveRunConfigResolver`. `TicketProjectId` (`ticket_project_id`) links the list to a project in the external ticket system; null = not linked → `ClaudeDo.Worker/CLAUDE.md` Tickets section. `BaseBranch` (`base_branch`) = base of new worktrees + default merge target; tri-state in `UpdateListConfigDto` (null = keep, "" = clear). ⚠️ Same verbatim-copy trap as `ticket_project_id`: `SetConfigAsync` overwrites every column, so every writer must carry it forward.
   - ⚠️ `ListRepository.SetConfigAsync` copies the entity **verbatim**, so every writer must carry the fields it doesn't own (`SessionSkills`, `PermissionMode`, `TicketProjectId`) or they silently reset. `UpdateListConfigDto.TicketProjectId` is tri-state (`null` = keep stored) for exactly that reason — only the list-settings modal sends an explicit value. This bit `PermissionMode` for real: its update-branch copy was missing from `SetConfigAsync` until `f0a3a186`, so a list's permission-mode override only ever stuck on the list's *first* save, never on a later one.
 - **WorktreeEntity** — TaskId (PK, 1:1), Path, BranchName, BaseCommit, HeadCommit, DiffStat, MergeCommit (nullable — SHA of the merge commit this branch produced; the only thing making `revert_merge` possible without searching `git log`), State (`Active|Merged|Discarded|Kept`)
 - **TaskRunEntity** — per-run record: session_id, turns, result, structured output, exit code, log path, nullable `Model` (what the run actually executed with), and `TokensIn`/`TokensOut`/`CacheReadTokens`/`CacheWriteTokens`. ⚠️ Token fields come from the **session transcript**, not the stream-json event, as a per-run delta → [usage-monitoring](../../docs/explore-notes/usage-monitoring.md).

src/ClaudeDo.Data/Configuration/ListConfigEntityConfiguration.cs

@@ -21,5 +21,6 @@ public class ListConfigEntityConfiguration : IEntityTypeConfiguration<ListConfig
         builder.Property(c => c.PermissionMode).HasColumnName("permission_mode");
         builder.Property(c => c.TicketProjectId).HasColumnName("ticket_project_id");
         builder.Property(c => c.PowerUseAllowed).HasColumnName("power_use_allowed");
+        builder.Property(c => c.BaseBranch).HasColumnName("base_branch");
     }
 }

src/ClaudeDo.Data/Git/GitService.cs

@@ -414,6 +414,13 @@ public sealed class GitService
             .ToList();
     }
 
+    /// <summary>URL des Remotes <paramref name="remote"/>, oder null wenn es keins gibt.</summary>
+    public async Task<string?> GetRemoteUrlAsync(string repoDir, string remote = "origin", CancellationToken ct = default)
+    {
+        var (exitCode, stdout, _) = await RunGitAsync(repoDir, ["remote", "get-url", remote], ct);
+        return exitCode == 0 && !string.IsNullOrWhiteSpace(stdout) ? stdout.Trim() : null;
+    }
+
     public async Task<bool> IsMidMergeAsync(string repoDir, CancellationToken ct = default)
     {
         var (exitCode, stdout, _) = await RunGitAsync(repoDir, ["rev-parse", "--git-dir"], ct);

src/ClaudeDo.Data/Migrations/20261001083902_AddListBaseBranch.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ClaudeDo.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddListBaseBranch : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "base_branch",
+                table: "list_config",
+                type: "TEXT",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "base_branch",
+                table: "list_config");
+        }
+    }
+}

src/ClaudeDo.Data/Migrations/ClaudeDoDbContextModelSnapshot.cs

@@ -268,6 +268,10 @@ namespace ClaudeDo.Data.Migrations
                         .HasColumnType("TEXT")
                         .HasColumnName("agent_path");
 
+                    b.Property<string>("BaseBranch")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("base_branch");
+
                     b.Property<int?>("MaxTurns")
                         .HasColumnType("INTEGER")
                         .HasColumnName("max_turns");

src/ClaudeDo.Data/Models/ListConfigEntity.cs

@@ -23,6 +23,12 @@ public sealed class ListConfigEntity
     // false, also opt-in. ⚠️ Gleiche Falle wie TicketProjectId: SetConfigAsync kopiert verbatim.
     public bool PowerUseAllowed { get; set; }
 
+    /// <summary>
+    /// Basis neuer Worktrees und Default-Merge-/PR-Ziel (z.B. <c>dev</c>). Null = ausgecheckter Branch
+    /// (privat) bzw. Default-Branch des Remotes (Firma). ⚠️ SetConfigAsync kopiert verbatim.
+    /// </summary>
+    public string? BaseBranch { get; set; }
+
     // Navigation property
     public ListEntity List { get; set; } = null!;
 }

src/ClaudeDo.Data/Repositories/ListRepository.cs

@@ -175,6 +175,7 @@ public sealed class ListRepository
             existing.PermissionMode = config.PermissionMode;
             existing.TicketProjectId = config.TicketProjectId;
             existing.PowerUseAllowed = config.PowerUseAllowed;
+            existing.BaseBranch = config.BaseBranch;
         }
         await _context.SaveChangesAsync(ct);
     }

src/ClaudeDo.Data/Wire.cs

@@ -108,11 +108,12 @@ public record UpdateListDto(string Id, string Name, string? WorkingDir, string D
 // verbatim. Its scale: null = keep stored, <= 0 = clear the link, > 0 = set it.
 // PowerUseAllowed is nullable for the same reason: null = keep stored, false = revoke the opt-in.
 // A non-nullable bool here would let any caller that omits it silently revoke PowerUse for the list.
-public record UpdateListConfigDto(string ListId, string? Model, string? SystemPrompt, string? AgentPath, int? MaxTurns = null, List<string>? SessionSkills = null, string? VerifyCommand = null, string? PermissionMode = null, int? TicketProjectId = null, bool? PowerUseAllowed = null);
+// BaseBranch: null = keep stored, "" = clear, value = set.
+public record UpdateListConfigDto(string ListId, string? Model, string? SystemPrompt, string? AgentPath, int? MaxTurns = null, List<string>? SessionSkills = null, string? VerifyCommand = null, string? PermissionMode = null, int? TicketProjectId = null, bool? PowerUseAllowed = null, string? BaseBranch = null);
 
 public record UpdateTaskAgentSettingsDto(string TaskId, string? Model, string? SystemPrompt, string? AgentPath, int? MaxTurns = null, List<string>? SessionSkills = null, string? PermissionMode = null);
 
-public record ListConfigDto(string? Model, string? SystemPrompt, string? AgentPath, int? MaxTurns = null, List<string>? SessionSkills = null, string? VerifyCommand = null, string? PermissionMode = null, int? TicketProjectId = null, bool PowerUseAllowed = false);
+public record ListConfigDto(string? Model, string? SystemPrompt, string? AgentPath, int? MaxTurns = null, List<string>? SessionSkills = null, string? VerifyCommand = null, string? PermissionMode = null, int? TicketProjectId = null, bool PowerUseAllowed = false, string? BaseBranch = null);
 
 public record SeedResultDto(int Copied, int Skipped);