feat(projets): routes /api/projects + files et git re-racinés

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/app/routes/projects.py

@@ -0,0 +1,60 @@
+"""Routes des projets : sous-dossiers de premier niveau du workspace."""
+from __future__ import annotations
+
+import os
+
+from fastapi import APIRouter, HTTPException
+from pydantic import BaseModel
+
+from .. import coder, tools
+from ..config import settings
+
+router = APIRouter(prefix="/api/projects", tags=["projects"])
+
+
+def _root() -> str:
+    root = os.path.abspath(settings.workspace_dir)
+    os.makedirs(root, exist_ok=True)
+    return root
+
+
+def _count_files(path: str) -> int:
+    total = 0
+    for dirpath, dirnames, filenames in os.walk(path):
+        dirnames[:] = [d for d in dirnames if not d.startswith(".")]
+        total += sum(1 for f in filenames if not f.startswith("."))
+    return total
+
+
+@router.get("")
+async def list_projects() -> dict:
+    root = _root()
+    projects = []
+    root_files = 0
+    for name in sorted(os.listdir(root)):
+        full = os.path.join(root, name)
+        if name.startswith("."):
+            continue
+        if os.path.isdir(full):
+            projects.append({"name": name, "files": _count_files(full)})
+        else:
+            root_files += 1
+    return {"projects": projects, "root_files": root_files}
+
+
+class CreateProject(BaseModel):
+    name: str
+
+
+@router.post("", status_code=201)
+async def create_project(req: CreateProject) -> dict:
+    name = req.name.strip()
+    if not tools.PROJECT_NAME.match(name):
+        raise HTTPException(400, "nom de projet invalide (a-z, 0-9, - et _)")
+    target = os.path.join(_root(), name)
+    if os.path.exists(target):
+        raise HTTPException(400, "ce projet existe déjà")
+    os.makedirs(target)
+    # Dépôt git par projet : commits Aider + onglet Git propres au projet.
+    coder.ensure_git(target)
+    return {"name": name}