rebase rework

backend/src/api/routes/__tests__/test_git_status_route.py

@@ -313,4 +313,128 @@ def test_pull_changes_applies_profile_identity_before_pull(monkeypatch):
     assert identity_service.pulled_dashboard_id == 12
 # [/DEF:test_pull_changes_applies_profile_identity_before_pull:Function]
 
+
+# [DEF:test_get_merge_status_returns_service_payload:Function]
+# @PURPOSE: Ensure merge status route returns service payload as-is.
+# @PRE: git_service.get_merge_status returns unfinished merge payload.
+# @POST: Route response contains has_unfinished_merge=True.
+def test_get_merge_status_returns_service_payload(monkeypatch):
+    class MergeStatusGitService:
+        def get_merge_status(self, dashboard_id: int) -> dict:
+            return {
+                "has_unfinished_merge": True,
+                "repository_path": "/tmp/repo-12",
+                "git_dir": "/tmp/repo-12/.git",
+                "current_branch": "dev",
+                "merge_head": "abc",
+                "merge_message_preview": "merge msg",
+                "conflicts_count": 2,
+            }
+
+    monkeypatch.setattr(git_routes, "git_service", MergeStatusGitService())
+    monkeypatch.setattr(git_routes, "_resolve_dashboard_id_from_ref", lambda *_args, **_kwargs: 12)
+
+    response = asyncio.run(
+        git_routes.get_merge_status(
+            "dashboard-12",
+            config_manager=MagicMock(),
+        )
+    )
+
+    assert response["has_unfinished_merge"] is True
+    assert response["conflicts_count"] == 2
+# [/DEF:test_get_merge_status_returns_service_payload:Function]
+
+
+# [DEF:test_resolve_merge_conflicts_passes_resolution_items_to_service:Function]
+# @PURPOSE: Ensure merge resolve route forwards parsed resolutions to service.
+# @PRE: resolve_data has one file strategy.
+# @POST: Service receives normalized list and route returns resolved files.
+def test_resolve_merge_conflicts_passes_resolution_items_to_service(monkeypatch):
+    captured = {}
+
+    class MergeResolveGitService:
+        def resolve_merge_conflicts(self, dashboard_id: int, resolutions):
+            captured["dashboard_id"] = dashboard_id
+            captured["resolutions"] = resolutions
+            return ["dashboards/a.yaml"]
+
+    class ResolveData:
+        class _Resolution:
+            def dict(self):
+                return {"file_path": "dashboards/a.yaml", "resolution": "mine", "content": None}
+
+        resolutions = [_Resolution()]
+
+    monkeypatch.setattr(git_routes, "git_service", MergeResolveGitService())
+    monkeypatch.setattr(git_routes, "_resolve_dashboard_id_from_ref", lambda *_args, **_kwargs: 12)
+
+    response = asyncio.run(
+        git_routes.resolve_merge_conflicts(
+            "dashboard-12",
+            ResolveData(),
+            config_manager=MagicMock(),
+        )
+    )
+
+    assert captured["dashboard_id"] == 12
+    assert captured["resolutions"][0]["resolution"] == "mine"
+    assert response["resolved_files"] == ["dashboards/a.yaml"]
+# [/DEF:test_resolve_merge_conflicts_passes_resolution_items_to_service:Function]
+
+
+# [DEF:test_abort_merge_calls_service_and_returns_result:Function]
+# @PURPOSE: Ensure abort route delegates to service.
+# @PRE: Service abort_merge returns aborted status.
+# @POST: Route returns aborted status.
+def test_abort_merge_calls_service_and_returns_result(monkeypatch):
+    class AbortGitService:
+        def abort_merge(self, dashboard_id: int):
+            assert dashboard_id == 12
+            return {"status": "aborted"}
+
+    monkeypatch.setattr(git_routes, "git_service", AbortGitService())
+    monkeypatch.setattr(git_routes, "_resolve_dashboard_id_from_ref", lambda *_args, **_kwargs: 12)
+
+    response = asyncio.run(
+        git_routes.abort_merge(
+            "dashboard-12",
+            config_manager=MagicMock(),
+        )
+    )
+
+    assert response["status"] == "aborted"
+# [/DEF:test_abort_merge_calls_service_and_returns_result:Function]
+
+
+# [DEF:test_continue_merge_passes_message_and_returns_commit:Function]
+# @PURPOSE: Ensure continue route passes commit message to service.
+# @PRE: continue_data.message is provided.
+# @POST: Route returns committed status and hash.
+def test_continue_merge_passes_message_and_returns_commit(monkeypatch):
+    class ContinueGitService:
+        def continue_merge(self, dashboard_id: int, message: str):
+            assert dashboard_id == 12
+            assert message == "Resolve all conflicts"
+            return {"status": "committed", "commit_hash": "abc123"}
+
+    class ContinueData:
+        message = "Resolve all conflicts"
+
+    monkeypatch.setattr(git_routes, "git_service", ContinueGitService())
+    monkeypatch.setattr(git_routes, "_resolve_dashboard_id_from_ref", lambda *_args, **_kwargs: 12)
+
+    response = asyncio.run(
+        git_routes.continue_merge(
+            "dashboard-12",
+            ContinueData(),
+            config_manager=MagicMock(),
+        )
+    )
+
+    assert response["status"] == "committed"
+    assert response["commit_hash"] == "abc123"
+# [/DEF:test_continue_merge_passes_message_and_returns_commit:Function]
+
+
 # [/DEF:backend.src.api.routes.__tests__.test_git_status_route:Module]

backend/src/api/routes/git.py

@@ -30,6 +30,7 @@ from src.api.routes.git_schemas import (
     GiteaRepoCreateRequest, GiteaRepoSchema,
     RemoteRepoCreateRequest, RemoteRepoSchema,
     PromoteRequest, PromoteResponse,
+    MergeStatusSchema, MergeConflictFileSchema, MergeResolveRequest, MergeContinueRequest,
 )
 from src.services.git_service import GitService
 from src.core.superset_client import SupersetClient
@@ -825,6 +826,27 @@ async def pull_changes(
     with belief_scope("pull_changes"):
         try:
             dashboard_id = _resolve_dashboard_id_from_ref(dashboard_ref, config_manager, env_id)
+            db_repo = db.query(GitRepository).filter(GitRepository.dashboard_id == dashboard_id).first()
+            config_url = None
+            config_provider = None
+            if db_repo:
+                config_row = db.query(GitServerConfig).filter(GitServerConfig.id == db_repo.config_id).first()
+                if config_row:
+                    config_url = config_row.url
+                    config_provider = config_row.provider
+            logger.info(
+                "[pull_changes][Action] Route diagnostics dashboard_ref=%s env_id=%s resolved_dashboard_id=%s "
+                "binding_exists=%s binding_local_path=%s binding_remote_url=%s binding_config_id=%s config_provider=%s config_url=%s",
+                dashboard_ref,
+                env_id,
+                dashboard_id,
+                bool(db_repo),
+                (db_repo.local_path if db_repo else None),
+                (db_repo.remote_url if db_repo else None),
+                (db_repo.config_id if db_repo else None),
+                config_provider,
+                config_url,
+            )
             _apply_git_identity_from_profile(dashboard_id, db, current_user)
             git_service.pull_changes(dashboard_id)
             return {"status": "success"}
@@ -834,6 +856,122 @@ async def pull_changes(
             _handle_unexpected_git_route_error("pull_changes", e)
 # [/DEF:pull_changes:Function]
 
+# [DEF:get_merge_status:Function]
+# @PURPOSE: Return unfinished-merge status for repository (web-only recovery support).
+# @PRE: `dashboard_ref` resolves to a valid dashboard repository.
+# @POST: Returns merge status payload.
+@router.get("/repositories/{dashboard_ref}/merge/status", response_model=MergeStatusSchema)
+async def get_merge_status(
+    dashboard_ref: str,
+    env_id: Optional[str] = None,
+    config_manager=Depends(get_config_manager),
+    _ = Depends(has_permission("plugin:git", "EXECUTE"))
+):
+    with belief_scope("get_merge_status"):
+        try:
+            dashboard_id = _resolve_dashboard_id_from_ref(dashboard_ref, config_manager, env_id)
+            return git_service.get_merge_status(dashboard_id)
+        except HTTPException:
+            raise
+        except Exception as e:
+            _handle_unexpected_git_route_error("get_merge_status", e)
+# [/DEF:get_merge_status:Function]
+
+
+# [DEF:get_merge_conflicts:Function]
+# @PURPOSE: Return conflicted files with mine/theirs previews for web conflict resolver.
+# @PRE: `dashboard_ref` resolves to a valid dashboard repository.
+# @POST: Returns conflict file list.
+@router.get("/repositories/{dashboard_ref}/merge/conflicts", response_model=List[MergeConflictFileSchema])
+async def get_merge_conflicts(
+    dashboard_ref: str,
+    env_id: Optional[str] = None,
+    config_manager=Depends(get_config_manager),
+    _ = Depends(has_permission("plugin:git", "EXECUTE"))
+):
+    with belief_scope("get_merge_conflicts"):
+        try:
+            dashboard_id = _resolve_dashboard_id_from_ref(dashboard_ref, config_manager, env_id)
+            return git_service.get_merge_conflicts(dashboard_id)
+        except HTTPException:
+            raise
+        except Exception as e:
+            _handle_unexpected_git_route_error("get_merge_conflicts", e)
+# [/DEF:get_merge_conflicts:Function]
+
+
+# [DEF:resolve_merge_conflicts:Function]
+# @PURPOSE: Apply mine/theirs/manual conflict resolutions from WebUI and stage files.
+# @PRE: `dashboard_ref` resolves; request contains at least one resolution item.
+# @POST: Resolved files are staged in index.
+@router.post("/repositories/{dashboard_ref}/merge/resolve")
+async def resolve_merge_conflicts(
+    dashboard_ref: str,
+    resolve_data: MergeResolveRequest,
+    env_id: Optional[str] = None,
+    config_manager=Depends(get_config_manager),
+    _ = Depends(has_permission("plugin:git", "EXECUTE"))
+):
+    with belief_scope("resolve_merge_conflicts"):
+        try:
+            dashboard_id = _resolve_dashboard_id_from_ref(dashboard_ref, config_manager, env_id)
+            resolved_files = git_service.resolve_merge_conflicts(
+                dashboard_id,
+                [item.dict() for item in resolve_data.resolutions],
+            )
+            return {"status": "success", "resolved_files": resolved_files}
+        except HTTPException:
+            raise
+        except Exception as e:
+            _handle_unexpected_git_route_error("resolve_merge_conflicts", e)
+# [/DEF:resolve_merge_conflicts:Function]
+
+
+# [DEF:abort_merge:Function]
+# @PURPOSE: Abort unfinished merge from WebUI flow.
+# @PRE: `dashboard_ref` resolves to repository.
+# @POST: Merge operation is aborted or reports no active merge.
+@router.post("/repositories/{dashboard_ref}/merge/abort")
+async def abort_merge(
+    dashboard_ref: str,
+    env_id: Optional[str] = None,
+    config_manager=Depends(get_config_manager),
+    _ = Depends(has_permission("plugin:git", "EXECUTE"))
+):
+    with belief_scope("abort_merge"):
+        try:
+            dashboard_id = _resolve_dashboard_id_from_ref(dashboard_ref, config_manager, env_id)
+            return git_service.abort_merge(dashboard_id)
+        except HTTPException:
+            raise
+        except Exception as e:
+            _handle_unexpected_git_route_error("abort_merge", e)
+# [/DEF:abort_merge:Function]
+
+
+# [DEF:continue_merge:Function]
+# @PURPOSE: Finalize unfinished merge from WebUI flow.
+# @PRE: All conflicts are resolved and staged.
+# @POST: Merge commit is created.
+@router.post("/repositories/{dashboard_ref}/merge/continue")
+async def continue_merge(
+    dashboard_ref: str,
+    continue_data: MergeContinueRequest,
+    env_id: Optional[str] = None,
+    config_manager=Depends(get_config_manager),
+    _ = Depends(has_permission("plugin:git", "EXECUTE"))
+):
+    with belief_scope("continue_merge"):
+        try:
+            dashboard_id = _resolve_dashboard_id_from_ref(dashboard_ref, config_manager, env_id)
+            return git_service.continue_merge(dashboard_id, continue_data.message)
+        except HTTPException:
+            raise
+        except Exception as e:
+            _handle_unexpected_git_route_error("continue_merge", e)
+# [/DEF:continue_merge:Function]
+
+
 # [DEF:sync_dashboard:Function]
 # @PURPOSE: Sync dashboard state from Superset to Git using the GitPlugin.
 # @PRE: `dashboard_ref` is valid; GitPlugin is available.

backend/src/api/routes/git_schemas.py

@@ -126,6 +126,42 @@ class ConflictResolution(BaseModel):
     content: Optional[str] = None
 # [/DEF:ConflictResolution:Class]
 
+
+# [DEF:MergeStatusSchema:Class]
+# @PURPOSE: Schema representing unfinished merge status for repository.
+class MergeStatusSchema(BaseModel):
+    has_unfinished_merge: bool
+    repository_path: str
+    git_dir: str
+    current_branch: str
+    merge_head: Optional[str] = None
+    merge_message_preview: Optional[str] = None
+    conflicts_count: int = 0
+# [/DEF:MergeStatusSchema:Class]
+
+
+# [DEF:MergeConflictFileSchema:Class]
+# @PURPOSE: Schema describing one conflicted file with optional side snapshots.
+class MergeConflictFileSchema(BaseModel):
+    file_path: str
+    mine: Optional[str] = None
+    theirs: Optional[str] = None
+# [/DEF:MergeConflictFileSchema:Class]
+
+
+# [DEF:MergeResolveRequest:Class]
+# @PURPOSE: Request schema for resolving one or multiple merge conflicts.
+class MergeResolveRequest(BaseModel):
+    resolutions: List[ConflictResolution] = Field(default_factory=list)
+# [/DEF:MergeResolveRequest:Class]
+
+
+# [DEF:MergeContinueRequest:Class]
+# @PURPOSE: Request schema for finishing merge with optional explicit commit message.
+class MergeContinueRequest(BaseModel):
+    message: Optional[str] = None
+# [/DEF:MergeContinueRequest:Class]
+
 # [DEF:DeploymentEnvironmentSchema:Class]
 # @PURPOSE: Schema for representing a target deployment environment.
 class DeploymentEnvironmentSchema(BaseModel):

backend/src/services/git_service.py

@@ -20,6 +20,7 @@ import shutil
 from git import Repo
 from git.exc import GitCommandError
 from git.exc import InvalidGitRepositoryError, NoSuchPathError
+from git.objects.blob import Blob
 from fastapi import HTTPException
 from typing import Any, Dict, List, Optional
 from datetime import datetime
@@ -834,6 +835,204 @@ class GitService:
     # @PURPOSE: Pull changes from remote.
     # @PRE: Repository exists and has an 'origin' remote.
     # @POST: Changes from origin are pulled and merged into the active branch.
+    def _read_blob_text(self, blob: Blob) -> str:
+        with belief_scope("GitService._read_blob_text"):
+            if blob is None:
+                return ""
+            try:
+                return blob.data_stream.read().decode("utf-8", errors="replace")
+            except Exception:
+                return ""
+
+    def _get_unmerged_file_paths(self, repo: Repo) -> List[str]:
+        with belief_scope("GitService._get_unmerged_file_paths"):
+            try:
+                return sorted(list(repo.index.unmerged_blobs().keys()))
+            except Exception:
+                return []
+
+    def _build_unfinished_merge_payload(self, repo: Repo) -> Dict[str, Any]:
+        with belief_scope("GitService._build_unfinished_merge_payload"):
+            merge_head_path = os.path.join(repo.git_dir, "MERGE_HEAD")
+            merge_head_value = ""
+            merge_msg_preview = ""
+            current_branch = "unknown"
+            try:
+                merge_head_value = Path(merge_head_path).read_text(encoding="utf-8").strip()
+            except Exception:
+                merge_head_value = "<unreadable>"
+            try:
+                merge_msg_path = os.path.join(repo.git_dir, "MERGE_MSG")
+                if os.path.exists(merge_msg_path):
+                    merge_msg_preview = (
+                        Path(merge_msg_path).read_text(encoding="utf-8").strip().splitlines()[:1] or [""]
+                    )[0]
+            except Exception:
+                merge_msg_preview = "<unreadable>"
+            try:
+                current_branch = repo.active_branch.name
+            except Exception:
+                current_branch = "detached_or_unknown"
+
+            conflicts_count = len(self._get_unmerged_file_paths(repo))
+            return {
+                "error_code": "GIT_UNFINISHED_MERGE",
+                "message": (
+                    "В репозитории есть незавершённое слияние. "
+                    "Завершите или отмените слияние вручную."
+                ),
+                "repository_path": repo.working_tree_dir,
+                "git_dir": repo.git_dir,
+                "current_branch": current_branch,
+                "merge_head": merge_head_value,
+                "merge_message_preview": merge_msg_preview,
+                "conflicts_count": conflicts_count,
+                "next_steps": [
+                    "Откройте локальный репозиторий по пути repository_path",
+                    "Проверьте состояние: git status",
+                    "Разрешите конфликты и выполните commit, либо отмените: git merge --abort",
+                    "После завершения/отмены слияния повторите Pull из интерфейса",
+                ],
+                "manual_commands": [
+                    "git status",
+                    "git add <resolved-files>",
+                    "git commit -m \"resolve merge conflicts\"",
+                    "git merge --abort",
+                ],
+            }
+
+    def get_merge_status(self, dashboard_id: int) -> Dict[str, Any]:
+        with belief_scope("GitService.get_merge_status"):
+            repo = self.get_repo(dashboard_id)
+            merge_head_path = os.path.join(repo.git_dir, "MERGE_HEAD")
+            if not os.path.exists(merge_head_path):
+                current_branch = "unknown"
+                try:
+                    current_branch = repo.active_branch.name
+                except Exception:
+                    current_branch = "detached_or_unknown"
+                return {
+                    "has_unfinished_merge": False,
+                    "repository_path": repo.working_tree_dir,
+                    "git_dir": repo.git_dir,
+                    "current_branch": current_branch,
+                    "merge_head": None,
+                    "merge_message_preview": None,
+                    "conflicts_count": 0,
+                }
+            payload = self._build_unfinished_merge_payload(repo)
+            return {
+                "has_unfinished_merge": True,
+                "repository_path": payload["repository_path"],
+                "git_dir": payload["git_dir"],
+                "current_branch": payload["current_branch"],
+                "merge_head": payload["merge_head"],
+                "merge_message_preview": payload["merge_message_preview"],
+                "conflicts_count": int(payload.get("conflicts_count") or 0),
+            }
+
+    def get_merge_conflicts(self, dashboard_id: int) -> List[Dict[str, Any]]:
+        with belief_scope("GitService.get_merge_conflicts"):
+            repo = self.get_repo(dashboard_id)
+            conflicts = []
+            unmerged = repo.index.unmerged_blobs()
+            for file_path, stages in unmerged.items():
+                mine_blob = None
+                theirs_blob = None
+                for stage, blob in stages:
+                    if stage == 2:
+                        mine_blob = blob
+                    elif stage == 3:
+                        theirs_blob = blob
+                conflicts.append(
+                    {
+                        "file_path": file_path,
+                        "mine": self._read_blob_text(mine_blob) if mine_blob else "",
+                        "theirs": self._read_blob_text(theirs_blob) if theirs_blob else "",
+                    }
+                )
+            return sorted(conflicts, key=lambda item: item["file_path"])
+
+    def resolve_merge_conflicts(self, dashboard_id: int, resolutions: List[Dict[str, Any]]) -> List[str]:
+        with belief_scope("GitService.resolve_merge_conflicts"):
+            repo = self.get_repo(dashboard_id)
+            resolved_files: List[str] = []
+            repo_root = os.path.abspath(str(repo.working_tree_dir or ""))
+            if not repo_root:
+                raise HTTPException(status_code=500, detail="Repository working tree directory is unavailable")
+
+            for item in resolutions or []:
+                file_path = str(item.get("file_path") or "").strip()
+                strategy = str(item.get("resolution") or "").strip().lower()
+                content = item.get("content")
+                if not file_path:
+                    raise HTTPException(status_code=400, detail="resolution.file_path is required")
+                if strategy not in {"mine", "theirs", "manual"}:
+                    raise HTTPException(status_code=400, detail=f"Unsupported resolution strategy: {strategy}")
+
+                if strategy == "mine":
+                    repo.git.checkout("--ours", "--", file_path)
+                elif strategy == "theirs":
+                    repo.git.checkout("--theirs", "--", file_path)
+                else:
+                    abs_target = os.path.abspath(os.path.join(repo_root, file_path))
+                    if abs_target != repo_root and not abs_target.startswith(repo_root + os.sep):
+                        raise HTTPException(status_code=400, detail=f"Invalid conflict file path: {file_path}")
+                    os.makedirs(os.path.dirname(abs_target), exist_ok=True)
+                    with open(abs_target, "w", encoding="utf-8") as file_obj:
+                        file_obj.write(str(content or ""))
+
+                repo.git.add(file_path)
+                resolved_files.append(file_path)
+
+            return resolved_files
+
+    def abort_merge(self, dashboard_id: int) -> Dict[str, Any]:
+        with belief_scope("GitService.abort_merge"):
+            repo = self.get_repo(dashboard_id)
+            try:
+                repo.git.merge("--abort")
+            except GitCommandError as e:
+                details = str(e)
+                lowered = details.lower()
+                if "there is no merge to abort" in lowered or "no merge to abort" in lowered:
+                    return {"status": "no_merge_in_progress"}
+                raise HTTPException(status_code=409, detail=f"Cannot abort merge: {details}")
+            return {"status": "aborted"}
+
+    def continue_merge(self, dashboard_id: int, message: Optional[str] = None) -> Dict[str, Any]:
+        with belief_scope("GitService.continue_merge"):
+            repo = self.get_repo(dashboard_id)
+            unmerged_files = self._get_unmerged_file_paths(repo)
+            if unmerged_files:
+                raise HTTPException(
+                    status_code=409,
+                    detail={
+                        "error_code": "GIT_MERGE_CONFLICTS_REMAIN",
+                        "message": "Невозможно завершить merge: остались неразрешённые конфликты.",
+                        "unresolved_files": unmerged_files,
+                    },
+                )
+            try:
+                normalized_message = str(message or "").strip()
+                if normalized_message:
+                    repo.git.commit("-m", normalized_message)
+                else:
+                    repo.git.commit("--no-edit")
+            except GitCommandError as e:
+                details = str(e)
+                lowered = details.lower()
+                if "nothing to commit" in lowered:
+                    return {"status": "already_clean"}
+                raise HTTPException(status_code=409, detail=f"Cannot continue merge: {details}")
+
+            commit_hash = ""
+            try:
+                commit_hash = repo.head.commit.hexsha
+            except Exception:
+                commit_hash = ""
+            return {"status": "committed", "commit_hash": commit_hash}
+
     def pull_changes(self, dashboard_id: int):
         with belief_scope("GitService.pull_changes"):
             repo = self.get_repo(dashboard_id)
@@ -841,23 +1040,46 @@ class GitService:
             # Check for unfinished merge (MERGE_HEAD exists)
             merge_head_path = os.path.join(repo.git_dir, "MERGE_HEAD")
             if os.path.exists(merge_head_path):
-                logger.warning(f"[pull_changes][Action] Unfinished merge detected for dashboard {dashboard_id}")
-                raise HTTPException(
-                    status_code=409,
-                    detail=(
-                        "В репозитории есть незавершённое слияние. "
-                        "Пожалуйста, завершите или отмените слияние вручную: "
-                        "1) Разрешите конфликты и выполните коммит, или "
-                        "2) Выполните 'git merge --abort' для отмены слияния."
-                    ),
+                payload = self._build_unfinished_merge_payload(repo)
+
+                logger.warning(
+                    "[pull_changes][Action] Unfinished merge detected for dashboard %s "
+                    "(repo_path=%s git_dir=%s branch=%s merge_head=%s merge_msg=%s)",
+                    dashboard_id,
+                    payload["repository_path"],
+                    payload["git_dir"],
+                    payload["current_branch"],
+                    payload["merge_head"],
+                    payload["merge_message_preview"],
                 )
+                raise HTTPException(status_code=409, detail=payload)
             
             try:
                 origin = repo.remote(name='origin')
                 current_branch = repo.active_branch.name
+                try:
+                    origin_urls = list(origin.urls)
+                except Exception:
+                    origin_urls = []
+
+                logger.info(
+                    "[pull_changes][Action] Pull diagnostics dashboard=%s repo_path=%s branch=%s origin_urls=%s",
+                    dashboard_id,
+                    repo.working_tree_dir,
+                    current_branch,
+                    origin_urls,
+                )
+
                 origin.fetch(prune=True)
                 remote_ref = f"origin/{current_branch}"
                 has_remote_branch = any(ref.name == remote_ref for ref in repo.refs)
+                logger.info(
+                    "[pull_changes][Action] Pull remote branch check dashboard=%s branch=%s remote_ref=%s exists=%s",
+                    dashboard_id,
+                    current_branch,
+                    remote_ref,
+                    has_remote_branch,
+                )
                 if not has_remote_branch:
                     raise HTTPException(
                         status_code=409,

frontend/src/components/git/ConflictResolver.svelte

@@ -15,10 +15,9 @@
     // [/SECTION]
 
     // [SECTION: PROPS]
-    /** @type {Array<{file_path: string, mine: string, theirs: string}>} */
   let {
     conflicts = [],
-    show = false,
+    show = $bindable(false),
   } = $props();
 
     // [/SECTION]

frontend/src/components/git/GitManager.svelte

@@ -18,6 +18,7 @@
     import { Button, Card, PageHeader, Select, Input } from '../../lib/ui';
     import BranchSelector from './BranchSelector.svelte';
     import DeploymentModal from './DeploymentModal.svelte';
+    import ConflictResolver from './ConflictResolver.svelte';
     // [/SECTION]
 
     // [SECTION: PROPS]
@@ -63,6 +64,15 @@
     let repositoryProvider = $state('');
     let repositoryBindingRemoteUrl = $state('');
     let repositoryConfigUrl = $state('');
+    let showUnfinishedMergeDialog = $state(false);
+    let unfinishedMergeContext = $state(null);
+    let copyingUnfinishedMergeCommands = $state(false);
+    let mergeRecoveryLoading = $state(false);
+    let mergeConflicts = $state([]);
+    let showConflictResolver = $state(false);
+    let mergeResolveInProgress = $state(false);
+    let mergeAbortInProgress = $state(false);
+    let mergeContinueInProgress = $state(false);
     // [/SECTION]
 
     const hasWorkspaceChanges = $derived.by(() => {
@@ -302,6 +312,181 @@
      * @purpose Pull remote changes for current branch.
      * @post Workspace status is refreshed.
      */
+    function tryParseJsonObject(value) {
+        const source = String(value || '').trim();
+        if (!source.startsWith('{') || !source.endsWith('}')) return null;
+        try {
+            const parsed = JSON.parse(source);
+            return parsed && typeof parsed === 'object' && !Array.isArray(parsed) ? parsed : null;
+        } catch (_e) {
+            return null;
+        }
+    }
+
+    function extractUnfinishedMergeContext(error) {
+        if (!error || Number(error?.status) !== 409) return null;
+        const parsedMessage = tryParseJsonObject(error?.message);
+        const detail = error?.detail && typeof error.detail === 'object' ? error.detail : null;
+        const payload = detail || parsedMessage;
+        if (!payload || payload.error_code !== 'GIT_UNFINISHED_MERGE') return null;
+
+        const commands = Array.isArray(payload.manual_commands)
+            ? payload.manual_commands.filter(Boolean).map((item) => String(item))
+            : [];
+
+        const nextSteps = Array.isArray(payload.next_steps)
+            ? payload.next_steps.filter(Boolean).map((item) => String(item))
+            : [];
+
+        return {
+            message: String(payload.message || ''),
+            repositoryPath: String(payload.repository_path || ''),
+            gitDir: String(payload.git_dir || ''),
+            currentBranch: String(payload.current_branch || ''),
+            mergeHead: String(payload.merge_head || ''),
+            mergeMessagePreview: String(payload.merge_message_preview || ''),
+            nextSteps,
+            commands,
+        };
+    }
+
+    function openUnfinishedMergeDialogFromError(error) {
+        const context = extractUnfinishedMergeContext(error);
+        if (!context) return false;
+        unfinishedMergeContext = context;
+        showUnfinishedMergeDialog = true;
+        return true;
+    }
+
+    async function loadMergeRecoveryState() {
+        mergeRecoveryLoading = true;
+        try {
+            const status = await gitService.getMergeStatus(dashboardId, envId);
+            if (!status?.has_unfinished_merge) {
+                closeUnfinishedMergeDialog();
+                return;
+            }
+            unfinishedMergeContext = {
+                ...(unfinishedMergeContext || {}),
+                message: unfinishedMergeContext?.message || ($t.git?.unfinished_merge?.default_message || ''),
+                repositoryPath: String(status.repository_path || unfinishedMergeContext?.repositoryPath || ''),
+                gitDir: String(status.git_dir || unfinishedMergeContext?.gitDir || ''),
+                currentBranch: String(status.current_branch || unfinishedMergeContext?.currentBranch || ''),
+                mergeHead: String(status.merge_head || unfinishedMergeContext?.mergeHead || ''),
+                mergeMessagePreview: String(status.merge_message_preview || unfinishedMergeContext?.mergeMessagePreview || ''),
+                nextSteps: Array.isArray(unfinishedMergeContext?.nextSteps) ? unfinishedMergeContext.nextSteps : [],
+                commands: Array.isArray(unfinishedMergeContext?.commands) ? unfinishedMergeContext.commands : [],
+                conflictsCount: Number(status.conflicts_count || 0),
+            };
+        } catch (e) {
+            toast(e.message || ($t.git?.unfinished_merge?.load_status_failed || 'Failed to load merge status'), 'error');
+        } finally {
+            mergeRecoveryLoading = false;
+        }
+    }
+
+    function closeUnfinishedMergeDialog() {
+        showUnfinishedMergeDialog = false;
+        unfinishedMergeContext = null;
+        mergeConflicts = [];
+        showConflictResolver = false;
+    }
+
+    async function handleOpenConflictResolver() {
+        mergeRecoveryLoading = true;
+        try {
+            mergeConflicts = await gitService.getMergeConflicts(dashboardId, envId);
+            if (!Array.isArray(mergeConflicts) || mergeConflicts.length === 0) {
+                toast($t.git?.unfinished_merge?.no_conflicts || 'No unresolved conflicts were found', 'info');
+                return;
+            }
+            showConflictResolver = true;
+        } catch (e) {
+            toast(e.message || ($t.git?.unfinished_merge?.load_conflicts_failed || 'Failed to load merge conflicts'), 'error');
+        } finally {
+            mergeRecoveryLoading = false;
+        }
+    }
+
+    async function handleResolveConflicts(event) {
+        const detail = event?.detail || {};
+        const resolutions = Object.entries(detail).map(([file_path, resolution]) => ({
+            file_path,
+            resolution,
+        }));
+        if (!resolutions.length) {
+            toast($t.git?.unfinished_merge?.resolve_empty || 'No conflict resolutions selected', 'warning');
+            return;
+        }
+
+        mergeResolveInProgress = true;
+        try {
+            await gitService.resolveMergeConflicts(dashboardId, resolutions, envId);
+            toast($t.git?.unfinished_merge?.resolve_success || 'Conflicts were resolved and staged', 'success');
+            showConflictResolver = false;
+            await loadMergeRecoveryState();
+            await loadWorkspace();
+        } catch (e) {
+            toast(e.message || ($t.git?.unfinished_merge?.resolve_failed || 'Failed to resolve conflicts'), 'error');
+        } finally {
+            mergeResolveInProgress = false;
+        }
+    }
+
+    async function handleAbortUnfinishedMerge() {
+        mergeAbortInProgress = true;
+        try {
+            await gitService.abortMerge(dashboardId, envId);
+            toast($t.git?.unfinished_merge?.abort_success || 'Merge was aborted', 'success');
+            closeUnfinishedMergeDialog();
+            await loadWorkspace();
+        } catch (e) {
+            toast(e.message || ($t.git?.unfinished_merge?.abort_failed || 'Failed to abort merge'), 'error');
+        } finally {
+            mergeAbortInProgress = false;
+        }
+    }
+
+    async function handleContinueUnfinishedMerge() {
+        mergeContinueInProgress = true;
+        try {
+            await gitService.continueMerge(dashboardId, '', envId);
+            toast($t.git?.unfinished_merge?.continue_success || 'Merge commit created successfully', 'success');
+            closeUnfinishedMergeDialog();
+            await loadWorkspace();
+        } catch (e) {
+            toast(e.message || ($t.git?.unfinished_merge?.continue_failed || 'Failed to continue merge'), 'error');
+            await loadMergeRecoveryState();
+        } finally {
+            mergeContinueInProgress = false;
+        }
+    }
+
+    function getUnfinishedMergeCommandsText() {
+        if (!unfinishedMergeContext?.commands?.length) return '';
+        return unfinishedMergeContext.commands.join('\n');
+    }
+
+    async function handleCopyUnfinishedMergeCommands() {
+        const commandsText = getUnfinishedMergeCommandsText();
+        if (!commandsText) {
+            toast($t.git?.unfinished_merge?.copy_empty || 'Команды для копирования отсутствуют', 'warning');
+            return;
+        }
+        copyingUnfinishedMergeCommands = true;
+        try {
+            if (typeof navigator === 'undefined' || !navigator?.clipboard?.writeText) {
+                throw new Error('Clipboard API unavailable');
+            }
+            await navigator.clipboard.writeText(commandsText);
+            toast($t.git?.unfinished_merge?.copy_success || 'Команды скопированы в буфер обмена', 'success');
+        } catch (_e) {
+            toast($t.git?.unfinished_merge?.copy_failed || 'Не удалось скопировать команды', 'error');
+        } finally {
+            copyingUnfinishedMergeCommands = false;
+        }
+    }
+
     async function handlePull() {
         isPulling = true;
         try {
@@ -309,7 +494,12 @@
             toast($t.git?.pull_success || 'Изменения получены из Git', 'success');
             await loadWorkspace();
         } catch (e) {
-            toast(e.message, 'error');
+            const handledByDialog = openUnfinishedMergeDialogFromError(e);
+            if (handledByDialog) {
+                await loadMergeRecoveryState();
+            } else {
+                toast(e.message, 'error');
+            }
         } finally {
             isPulling = false;
         }
@@ -891,9 +1081,118 @@
                 </div>
             {/if}
         </div>
+
+        {#if showUnfinishedMergeDialog && unfinishedMergeContext}
+            <div
+                class="absolute inset-0 z-20 flex items-center justify-center bg-black bg-opacity-40 p-4"
+                role="dialog"
+                aria-modal="true"
+                aria-label={$t.git?.unfinished_merge?.title || 'Repository has an unfinished merge'}
+            >
+                <div class="max-h-[85vh] w-full max-w-2xl overflow-y-auto rounded-lg border border-amber-300 bg-white p-5 shadow-2xl">
+                    <div class="mb-3 text-lg font-semibold text-amber-900">
+                        {$t.git?.unfinished_merge?.title || 'Repository has an unfinished merge'}
+                    </div>
+                    <p class="mb-4 text-sm text-slate-700">
+                        {unfinishedMergeContext.message || ($t.git?.unfinished_merge?.default_message || 'An unfinished merge was detected in this repository.')}
+                    </p>
+
+                    <div class="grid grid-cols-1 gap-2 text-sm md:grid-cols-2">
+                        <div class="rounded border border-slate-200 bg-slate-50 p-2">
+                            <div class="text-xs text-slate-500">{$t.git?.unfinished_merge?.repository_path || 'Repository path'}</div>
+                            <div class="break-all font-mono text-slate-800">{unfinishedMergeContext.repositoryPath || '—'}</div>
+                        </div>
+                        <div class="rounded border border-slate-200 bg-slate-50 p-2">
+                            <div class="text-xs text-slate-500">{$t.git?.unfinished_merge?.branch || 'Current branch'}</div>
+                            <div class="font-mono text-slate-800">{unfinishedMergeContext.currentBranch || '—'}</div>
+                        </div>
+                        {#if unfinishedMergeContext.mergeHead}
+                            <div class="rounded border border-slate-200 bg-slate-50 p-2 md:col-span-2">
+                                <div class="text-xs text-slate-500">MERGE_HEAD</div>
+                                <div class="break-all font-mono text-slate-800">{unfinishedMergeContext.mergeHead}</div>
+                            </div>
+                        {/if}
+                    </div>
+
+                    {#if unfinishedMergeContext.nextSteps?.length}
+                        <div class="mt-4">
+                            <div class="mb-1 text-sm font-semibold text-slate-700">
+                                {$t.git?.unfinished_merge?.next_steps || 'Recommended steps'}
+                            </div>
+                            <ol class="list-decimal space-y-1 pl-5 text-sm text-slate-700">
+                                {#each unfinishedMergeContext.nextSteps as step}
+                                    <li>{step}</li>
+                                {/each}
+                            </ol>
+                        </div>
+                    {/if}
+
+                    {#if unfinishedMergeContext.commands?.length}
+                        <div class="mt-4">
+                            <div class="mb-1 text-sm font-semibold text-slate-700">
+                                {$t.git?.unfinished_merge?.manual_commands || 'Manual recovery commands'}
+                            </div>
+                            <pre class="overflow-auto rounded border border-slate-200 bg-slate-50 p-3 text-xs text-slate-800">{unfinishedMergeContext.commands.join('\n')}</pre>
+                        </div>
+                    {/if}
+
+                    <div class="mt-5 flex flex-wrap justify-end gap-2">
+                        <Button
+                            variant="ghost"
+                            onclick={loadMergeRecoveryState}
+                            disabled={mergeRecoveryLoading}
+                            isLoading={mergeRecoveryLoading}
+                        >
+                            {$t.common?.refresh || 'Refresh'}
+                        </Button>
+                        <Button
+                            variant="secondary"
+                            onclick={handleCopyUnfinishedMergeCommands}
+                            disabled={copyingUnfinishedMergeCommands}
+                            isLoading={copyingUnfinishedMergeCommands}
+                        >
+                            {$t.git?.unfinished_merge?.copy_commands || 'Copy commands'}
+                        </Button>
+                        <Button
+                            variant="ghost"
+                            onclick={handleOpenConflictResolver}
+                            disabled={mergeRecoveryLoading || mergeResolveInProgress}
+                            isLoading={mergeResolveInProgress}
+                        >
+                            {$t.git?.unfinished_merge?.open_resolver || 'Open conflict resolver'}
+                        </Button>
+                        <Button
+                            variant="ghost"
+                            onclick={handleAbortUnfinishedMerge}
+                            disabled={mergeAbortInProgress}
+                            isLoading={mergeAbortInProgress}
+                            class="border border-red-300 text-red-700 hover:bg-red-50"
+                        >
+                            {$t.git?.unfinished_merge?.abort_merge || 'Abort merge'}
+                        </Button>
+                        <Button
+                            onclick={handleContinueUnfinishedMerge}
+                            disabled={mergeContinueInProgress}
+                            isLoading={mergeContinueInProgress}
+                        >
+                            {$t.git?.unfinished_merge?.continue_merge || 'Continue merge'}
+                        </Button>
+                        <Button onclick={closeUnfinishedMergeDialog}>
+                            {$t.common?.close || 'Close'}
+                        </Button>
+                    </div>
+                </div>
+            </div>
+        {/if}
     </div>
 {/if}
 
+<ConflictResolver
+    conflicts={mergeConflicts}
+    bind:show={showConflictResolver}
+    on:resolve={handleResolveConflicts}
+/>
+
 <DeploymentModal
     {dashboardId}
     {envId}

frontend/src/components/git/__tests__/git_manager.unfinished_merge.integration.test.js

@@ -0,0 +1,43 @@
+// [DEF:frontend.src.components.git.__tests__.git_manager_unfinished_merge_integration:Module]
+// @TIER: STANDARD
+// @SEMANTICS: git-manager, unfinished-merge, dialog, integration-test
+// @PURPOSE: Protect unresolved-merge dialog contract in GitManager pull flow.
+// @LAYER: UI Tests
+// @RELATION: VERIFIES -> frontend/src/components/git/GitManager.svelte
+
+import { describe, it, expect } from 'vitest';
+import fs from 'node:fs';
+import path from 'node:path';
+
+const COMPONENT_PATH = path.resolve(
+  process.cwd(),
+  'src/components/git/GitManager.svelte',
+);
+
+describe('GitManager unfinished merge dialog contract', () => {
+  it('keeps 409 unfinished-merge detection and WebUI dialog recovery flow in pull handler', () => {
+    const source = fs.readFileSync(COMPONENT_PATH, 'utf-8');
+
+    expect(source).toContain('Number(error?.status) !== 409');
+    expect(source).toContain("payload.error_code !== 'GIT_UNFINISHED_MERGE'");
+    expect(source).toContain('function openUnfinishedMergeDialogFromError(error)');
+    expect(source).toContain('showUnfinishedMergeDialog = true;');
+    expect(source).toContain('const handledByDialog = openUnfinishedMergeDialogFromError(e);');
+    expect(source).toContain('await loadMergeRecoveryState();');
+  });
+
+  it('renders unresolved-merge dialog details and web recovery actions', () => {
+    const source = fs.readFileSync(COMPONENT_PATH, 'utf-8');
+
+    expect(source).toContain('{#if showUnfinishedMergeDialog && unfinishedMergeContext}');
+    expect(source).toContain('unfinishedMergeContext.repositoryPath');
+    expect(source).toContain('unfinishedMergeContext.currentBranch');
+    expect(source).toContain('unfinishedMergeContext.commands.join');
+    expect(source).toContain('handleCopyUnfinishedMergeCommands');
+    expect(source).toContain('handleOpenConflictResolver');
+    expect(source).toContain('handleAbortUnfinishedMerge');
+    expect(source).toContain('handleContinueUnfinishedMerge');
+    expect(source).toContain('$t.git?.unfinished_merge?.copy_commands');
+  });
+});
+// [/DEF:frontend.src.components.git.__tests__.git_manager_unfinished_merge_integration:Module]

frontend/src/lib/api.js

@@ -15,11 +15,20 @@ const API_BASE_URL = '/api';
 // @POST: Returned error contains message and status fields.
 async function buildApiError(response) {
     const errorData = await response.json().catch(() => ({}));
-    const message = errorData.detail
-        ? (typeof errorData.detail === 'string' ? errorData.detail : JSON.stringify(errorData.detail))
+    const detail = errorData?.detail;
+    const message = detail
+        ? (
+            typeof detail === 'string'
+                ? detail
+                : (typeof detail?.message === 'string' ? detail.message : JSON.stringify(detail))
+        )
         : `API request failed with status ${response.status}`;
     const error = new Error(message);
-    error.status = response.status;
+    /** @type {any} */ (error).status = response.status;
+    /** @type {any} */ (error).detail = detail;
+    if (detail && typeof detail === 'object' && detail.error_code) {
+        /** @type {any} */ (error).error_code = String(detail.error_code);
+    }
     return error;
 }
 // [/DEF:buildApiError:Function]
@@ -54,7 +63,18 @@ function shouldSuppressApiErrorToast(endpoint, error) {
         (error?.status === 400 || error?.status === 404) &&
         /Repository for dashboard .* not found/i.test(String(error?.message || ''));
 
-    return isGitStatusEndpoint && isNoRepoError;
+    const isGitPullEndpoint =
+        typeof endpoint === 'string' &&
+        endpoint.startsWith('/git/repositories/') &&
+        endpoint.endsWith('/pull');
+    const isUnfinishedMergeError =
+        error?.status === 409 &&
+        (
+            String(error?.error_code || '') === 'GIT_UNFINISHED_MERGE' ||
+            String(error?.detail?.error_code || '') === 'GIT_UNFINISHED_MERGE'
+        );
+
+    return (isGitStatusEndpoint && isNoRepoError) || (isGitPullEndpoint && isUnfinishedMergeError);
 }
 // [/DEF:shouldSuppressApiErrorToast:Function]
 
@@ -130,7 +150,7 @@ async function fetchApiBlob(endpoint, options = {}) {
         if (response.status === 202) {
             const payload = await response.json().catch(() => ({ message: "Resource is being prepared" }));
             const error = new Error(payload?.message || "Resource is being prepared");
-            error.status = 202;
+            /** @type {any} */ (error).status = 202;
             throw error;
         }
         if (!response.ok) {

frontend/src/lib/i18n/locales/en.json

@@ -295,6 +295,18 @@
       "ahead_remote": "Ahead Remote",
       "diverged": "Diverged",
       "error": "Error"
+    },
+    "unfinished_merge": {
+      "title": "Repository has an unfinished merge",
+      "default_message": "An unfinished merge was detected. Resolve conflicts or abort merge manually, then retry Pull.",
+      "repository_path": "Repository path",
+      "branch": "Current branch",
+      "next_steps": "Recommended steps",
+      "manual_commands": "Manual recovery commands",
+      "copy_commands": "Copy commands",
+      "copy_success": "Commands copied to clipboard",
+      "copy_failed": "Failed to copy commands",
+      "copy_empty": "No commands to copy"
     }
   },
   "dashboard": {

frontend/src/lib/i18n/locales/ru.json

@@ -294,6 +294,18 @@
       "ahead_remote": "Опережает remote",
       "diverged": "Расхождение",
       "error": "Ошибка"
+    },
+    "unfinished_merge": {
+      "title": "Незавершённое слияние в репозитории",
+      "default_message": "В репозитории найдено незавершённое слияние. Завершите или отмените его вручную и повторите Pull.",
+      "repository_path": "Путь к репозиторию",
+      "branch": "Текущая ветка",
+      "next_steps": "Рекомендуемые шаги",
+      "manual_commands": "Команды для ручного восстановления",
+      "copy_commands": "Скопировать команды",
+      "copy_success": "Команды скопированы в буфер обмена",
+      "copy_failed": "Не удалось скопировать команды",
+      "copy_empty": "Команды для копирования отсутствуют"
     }
   },
   "dashboard": {

frontend/src/services/gitService.js

@@ -147,7 +147,7 @@ export const gitService = {
      * @purpose Initializes or clones a Git repository for a dashboard.
      * @pre     Dashboard must exist and config_id must be valid.
      * @post    Repository is initialized on the backend.
-     * @param   {number} dashboardId - ID of the dashboard.
+     * @param   {string|number} dashboardRef - Dashboard slug or id.
      * @param   {string} configId - ID of the Git config.
      * @param   {string} remoteUrl - URL of the remote repository.
      * @returns {Promise<Object>} Initialization result.
@@ -178,7 +178,7 @@ export const gitService = {
      * @purpose Retrieves the list of branches for a dashboard's repository.
      * @pre     Repository must be initialized.
      * @post    Returns a list of branches.
-     * @param   {number} dashboardId - ID of the dashboard.
+     * @param   {string|number} dashboardRef - Dashboard slug or id.
      * @returns {Promise<Array>} List of branches.
      */
     async getBranches(dashboardRef, envId = null) {
@@ -272,6 +272,77 @@ export const gitService = {
         return requestApi(buildDashboardRepoEndpoint(dashboardRef, '/pull', envId), 'POST');
     },
 
+    /**
+     * [DEF:getMergeStatus:Function]
+     * @purpose Retrieves unfinished-merge status for repository.
+     * @pre     Repository must exist.
+     * @post    Returns merge status payload.
+     * @param   {string|number} dashboardRef - Dashboard slug or id.
+     * @returns {Promise<Object>} Merge status details.
+     */
+    async getMergeStatus(dashboardRef, envId = null) {
+        console.log(`[getMergeStatus][Action] Fetching merge status for dashboard ${dashboardRef}`);
+        return requestApi(buildDashboardRepoEndpoint(dashboardRef, '/merge/status', envId));
+    },
+
+    /**
+     * [DEF:getMergeConflicts:Function]
+     * @purpose Retrieves merge conflicts list for repository.
+     * @pre     Unfinished merge should be in progress.
+     * @post    Returns conflict files with mine/theirs previews.
+     * @param   {string|number} dashboardRef - Dashboard slug or id.
+     * @returns {Promise<Array>} List of conflict files.
+     */
+    async getMergeConflicts(dashboardRef, envId = null) {
+        console.log(`[getMergeConflicts][Action] Fetching merge conflicts for dashboard ${dashboardRef}`);
+        return requestApi(buildDashboardRepoEndpoint(dashboardRef, '/merge/conflicts', envId));
+    },
+
+    /**
+     * [DEF:resolveMergeConflicts:Function]
+     * @purpose Applies conflict resolution strategies and stages resolved files.
+     * @pre     resolutions contains file_path/resolution entries.
+     * @post    Conflicts are resolved and staged.
+     * @param   {string|number} dashboardRef - Dashboard slug or id.
+     * @param   {Array} resolutions - Resolution entries.
+     * @returns {Promise<Object>} Resolve result.
+     */
+    async resolveMergeConflicts(dashboardRef, resolutions, envId = null) {
+        console.log(`[resolveMergeConflicts][Action] Resolving ${Array.isArray(resolutions) ? resolutions.length : 0} conflicts for dashboard ${dashboardRef}`);
+        return requestApi(buildDashboardRepoEndpoint(dashboardRef, '/merge/resolve', envId), 'POST', {
+            resolutions: Array.isArray(resolutions) ? resolutions : []
+        });
+    },
+
+    /**
+     * [DEF:abortMerge:Function]
+     * @purpose Aborts current unfinished merge.
+     * @pre     Repository exists.
+     * @post    Merge state is aborted or reported as absent.
+     * @param   {string|number} dashboardRef - Dashboard slug or id.
+     * @returns {Promise<Object>} Abort operation result.
+     */
+    async abortMerge(dashboardRef, envId = null) {
+        console.log(`[abortMerge][Action] Aborting merge for dashboard ${dashboardRef}`);
+        return requestApi(buildDashboardRepoEndpoint(dashboardRef, '/merge/abort', envId), 'POST');
+    },
+
+    /**
+     * [DEF:continueMerge:Function]
+     * @purpose Finalizes unfinished merge by creating merge commit.
+     * @pre     All conflicts are resolved.
+     * @post    Merge commit is created.
+     * @param   {string|number} dashboardRef - Dashboard slug or id.
+     * @param   {string} message - Optional commit message.
+     * @returns {Promise<Object>} Continue result.
+     */
+    async continueMerge(dashboardRef, message = '', envId = null) {
+        console.log(`[continueMerge][Action] Continuing merge for dashboard ${dashboardRef}`);
+        return requestApi(buildDashboardRepoEndpoint(dashboardRef, '/merge/continue', envId), 'POST', {
+            message: String(message || '').trim() || null
+        });
+    },
+
     /**
      * [DEF:getEnvironments:Function]
      * @purpose Retrieves available deployment environments.

specs/011-git-integration-dashboard/tasks.md

@@ -2,7 +2,7 @@
 
 **Feature**: Git Integration for Dashboard Development
 **Status**: Completed
-**Total Tasks**: 35
+**Total Tasks**: 43
 
 ## Phase 1: Setup
 **Goal**: Initialize project structure and dependencies.
@@ -92,4 +92,17 @@
 
 - [x] D001 Diagnose source-of-truth mismatch for server URL in push flow
 - [x] D002 Validate diagnosis with backend push diagnostics logs
-- [x] D003 Apply behavioral fix only after diagnosis confirmation
+- [x] D003 Apply behavioral fix only after diagnosis confirmation
+
+## Phase 10: Operational Debug (2026-03-08)
+**Goal**: Diagnose unexpected 409 on pull caused by unfinished merge detection.
+
+- [x] D004 Add pull diagnostics logs for merge marker, repo path, branch, and binding metadata
+- [x] D005 Confirm root cause hypothesis from new diagnostics before applying any behavior fix
+- [x] D006 Implement richer 409 API response for unfinished merge (repo path, branch, explicit manual steps)
+
+## Phase 11: Operational Debug (2026-03-08)
+**Goal**: Add GitManager remediation dialog for unfinished merge 409 with actionable guidance.
+
+- [x] D007 Implement unresolved-merge resolution dialog in `frontend/src/components/git/GitManager.svelte`
+- [x] D008 Add frontend contract test for unfinished-merge dialog behavior in `frontend/src/components/git/__tests__/git_manager.unfinished_merge.integration.test.js`