test(palier-3): 19 tests — recherche, mes issues, briefing, MCP, étiquettes (84 verts)

FakeGitea: get_user, search_issues (filtres q/état/assigné, PR
exclues, repository joint), delete_label, forget_label_cache;
issue 1 assignée à bruno pour /my.

tests/conftest.py

@@ -48,8 +48,8 @@ def _issue(number: int, title: str, state: str = "open", pr: bool = False) -> di
         "body": f"Corps de l'issue {number} en **markdown**.",
         "state": state,
         "labels": [{"id": 900, "name": "bug", "color": "ff0000"}] if number == 1 else [],
-        "assignee": None,
-        "assignees": [],
+        "assignee": {"login": "bruno", "avatar_url": ""} if number == 1 else None,
+        "assignees": [{"login": "bruno", "avatar_url": ""}] if number == 1 else [],
         "milestone": {"id": 1, "title": "Sprint 1"} if number in (1, 3) else None,
         "due_date": None,
         "created_at": "2026-09-01T09:00:00Z",
@@ -109,6 +109,37 @@ class FakeGitea:
     async def ping(self) -> bool:
         return self.ping_result
 
+    async def get_user(self):
+        return {"id": 1, "login": "bruno"}
+
+    async def search_issues(self, q="", state="open", assigned_by=None):
+        results = []
+        for full_name, issues in self.issues.items():
+            for issue in issues:
+                if issue.get("pull_request"):
+                    continue
+                if state != "all" and issue["state"] != state:
+                    continue
+                if q and q.lower() not in issue["title"].lower():
+                    continue
+                if assigned_by:
+                    logins = [a["login"] for a in issue.get("assignees") or []]
+                    if issue.get("assignee"):
+                        logins.append(issue["assignee"]["login"])
+                    if assigned_by not in logins:
+                        continue
+                results.append({**issue, "repository": {"full_name": full_name}})
+        return results
+
+    async def delete_label(self, owner, repo, label_id):
+        labels = self.repo_labels.setdefault(f"{owner}/{repo}", {})
+        for name in [n for n, l in labels.items() if l["id"] == label_id]:
+            del labels[name]
+        self.label_ops.append(("delete", f"{owner}/{repo}", label_id))
+
+    def forget_label_cache(self, owner, repo):
+        pass
+
     async def search_repos(self):
         if self.raise_on_search:
             raise httpx.HTTPError("simulated Gitea outage")