feat: completude de l'editeur Excel - mise en forme, sortie, concurrence, cache, outils IA #156

L'editeur lisait les styles mais ne les ecrivait pas, exportait la feuille
entiere et laissait le dernier-ecrivain gagner entre processus.

- A8 : bouton Mise en forme (gras/italique/souligne, alignements, couleurs via
  selecteur natif, formats de nombre, fusion, volets figes, largeur/hauteur) et
  nouvelle route PUT .../xlsx/style (verrou, backup, swap atomique, garde de
  perte, If-Match) ; A9 : decision "pas de moteur de formule" annoncee dans
  l'UI ; A10 : undo/redo unifie, piles par fichier conservees au re-rendu
- A11 : export de la selection + Markdown/HTML/impression et recherche sur
  toutes les feuilles ; A12 : concurrence optimiste (If-Match -> 409 reparable,
  retry qui relit) ; A13 : cache des metadonnees par (chemin, mtime, taille)
- A14 : outils IA .xlsm/.csv + search_workbook, analyze_range,
  edit_xlsx_structure
- tests : test_xlsx_styles.py (17), test_spreadsheet_tools.py (34),
  TestOptimisticConcurrency/TestMetaCache, JSDOM xlsx-viewer 107/107

tests/test_spreadsheet_tools.py

@@ -223,3 +223,197 @@ class TestAppendXlsxRows:
                 "vault": "Vault", "path": "classeur.xlsx",
                 "sheet": "Budget", "rows": [],
             })
+
+
+# ── #156-A14 — formats étendus, recherche, analyse de plage, structure ──────
+
+
+@pytest.fixture
+def notes_csv(vault: Path) -> Path:
+    """A `;`-separated CSV — the locale the viewer sniffs (BUG-098)."""
+    path = vault / "notes.csv"
+    path.write_text("Poste;Montant\nLoyer;900\nCourses;250\n", encoding="utf-8")
+    return path
+
+
+class TestRegistryExtended:
+    def test_read_tools_include_search_and_analyze(self):
+        for name in ("search_workbook", "analyze_range"):
+            spec = get_tool(name)
+            assert spec is not None
+            assert spec.risk == ToolRisk.READ
+
+    def test_structure_tool_requires_confirmation(self, vault, workbook):
+        spec = get_tool("edit_xlsx_structure")
+        assert spec is not None
+        assert spec.risk == ToolRisk.WRITE
+        with pytest.raises(ToolConfirmationRequired):
+            call_tool("edit_xlsx_structure", _ctx(), {
+                "vault": "Vault", "path": "classeur.xlsx",
+                "actions": [{"op": "row_insert", "sheet": "Budget", "at": 2}],
+            })
+
+
+class TestXlsmSupport:
+    def test_reads_and_edits_an_xlsm(self, vault):
+        path = vault / "macro.xlsm"
+        wb = openpyxl.Workbook()
+        wb.active.title = "Donnees"
+        wb.active.append(["A", "B"])
+        wb.active.append([1, 2])
+        wb.save(path)
+
+        out = call_tool("list_xlsx_sheets", _ctx(), {"vault": "Vault", "path": "macro.xlsm"})
+        assert out.ok and out.data["sheets"][0]["name"] == "Donnees"
+        md = call_tool("xlsx_to_markdown", _ctx(), {"vault": "Vault", "path": "macro.xlsm"})
+        assert "| A | B |" in md.data["markdown"]
+
+        edit = call_tool("update_xlsx_cells", _ctx(), {
+            "vault": "Vault", "path": "macro.xlsm", "sheet": "Donnees",
+            "cells": {"A2": "9"},
+        }, confirm=True)
+        assert edit.ok
+        wb2 = openpyxl.load_workbook(path)
+        assert wb2["Donnees"]["A2"].value == 9
+        wb2.close()
+
+
+class TestCsvSupport:
+    def test_lists_reads_and_searches_a_csv(self, vault, notes_csv):
+        out = call_tool("list_xlsx_sheets", _ctx(), {"vault": "Vault", "path": "notes.csv"})
+        assert out.ok
+        assert out.data["sheets"] == [
+            {"name": "notes", "total_rows": 3, "total_cols": 2, "truncated": False}
+        ]
+        md = call_tool("xlsx_to_markdown", _ctx(), {"vault": "Vault", "path": "notes.csv"})
+        assert "| Poste | Montant |" in md.data["markdown"]
+        found = call_tool("search_workbook", _ctx(), {
+            "vault": "Vault", "path": "notes.csv", "query": "Loyer",
+        })
+        assert found.ok
+        assert found.data["total"] == 1
+        assert found.data["matches"][0] == {"sheet": "notes", "cell": "A2", "value": "Loyer"}
+        assert found.data["by_sheet"] == {"notes": 1}
+
+    def test_updates_a_csv_keeping_its_delimiter(self, vault, notes_csv):
+        out = call_tool("update_xlsx_cells", _ctx(), {
+            "vault": "Vault", "path": "notes.csv", "cells": {"B2": "1000"},
+        }, confirm=True)
+        assert out.ok
+        assert "Loyer;1000" in notes_csv.read_text(encoding="utf-8-sig")
+
+    def test_append_rows_refuses_a_csv(self, vault, notes_csv):
+        with pytest.raises(ToolError):
+            call_tool("append_xlsx_rows", _ctx(), {
+                "vault": "Vault", "path": "notes.csv",
+                "sheet": "notes", "rows": [["x"]],
+            }, confirm=True)
+
+    def test_structure_refuses_a_csv(self, vault, notes_csv):
+        with pytest.raises(ToolError):
+            call_tool("edit_xlsx_structure", _ctx(), {
+                "vault": "Vault", "path": "notes.csv",
+                "actions": [{"op": "sheet_add", "name": "X"}],
+            }, confirm=True)
+
+    def test_wrong_extension_is_still_refused(self, vault):
+        with pytest.raises(ToolError):
+            call_tool("search_workbook", _ctx(), {
+                "vault": "Vault", "path": "note.md", "query": "a",
+            })
+
+
+class TestSearchWorkbook:
+    def test_scans_every_sheet_with_counts(self, vault, workbook):
+        out = call_tool("search_workbook", _ctx(), {
+            "vault": "Vault", "path": "classeur.xlsx", "query": "o",
+        })
+        assert out.ok
+        assert out.data["by_sheet"]["Budget"] > 0
+        assert out.data["by_sheet"]["Notes"] == 1  # « bonjour » : une seule cellule
+        assert out.data["truncated"] is False
+        assert out.data["total"] == sum(out.data["by_sheet"].values())
+
+    def test_case_sensitive_and_sheet_scope(self, vault, workbook):
+        loose = call_tool("search_workbook", _ctx(), {
+            "vault": "Vault", "path": "classeur.xlsx", "query": "LOYER",
+        })
+        assert loose.data["total"] == 1
+        strict = call_tool("search_workbook", _ctx(), {
+            "vault": "Vault", "path": "classeur.xlsx", "query": "LOYER",
+            "case_sensitive": True,
+        })
+        assert strict.data["total"] == 0
+        scoped = call_tool("search_workbook", _ctx(), {
+            "vault": "Vault", "path": "classeur.xlsx", "query": "bonjour",
+            "sheet": "Budget",
+        })
+        assert scoped.data["total"] == 0
+
+    def test_empty_query_rejected(self, vault, workbook):
+        with pytest.raises(ToolError):
+            call_tool("search_workbook", _ctx(), {
+                "vault": "Vault", "path": "classeur.xlsx", "query": "  ",
+            })
+
+
+class TestAnalyzeRange:
+    def test_aggregates_a_column(self, vault, workbook):
+        out = call_tool("analyze_range", _ctx(), {
+            "vault": "Vault", "path": "classeur.xlsx",
+            "sheet": "Budget", "range": "B2:B3",
+        })
+        assert out.ok
+        stats = out.data["numeric"]
+        assert stats["count"] == 2
+        assert stats["sum"] == 1150
+        assert stats["mean"] == 575
+        assert stats["min"] == 250 and stats["max"] == 900
+
+    def test_whole_sheet_and_fr_separators(self, vault):
+        path = vault / "prix.xlsx"
+        wb = openpyxl.Workbook()
+        ws = wb.active
+        ws.append(["Article", "Prix"])
+        ws.append(["A", "1 234,5"])
+        ws.append(["B", 10])
+        wb.save(path)
+        out = call_tool("analyze_range", _ctx(), {"vault": "Vault", "path": "prix.xlsx"})
+        assert out.ok
+        assert out.data["numeric"]["count"] == 2
+        assert out.data["numeric"]["max"] == 1234.5
+        assert out.data["cells"] == 6  # 2 en-têtes + 4 valeurs
+
+    def test_bad_range_rejected(self, vault, workbook):
+        with pytest.raises(ToolError):
+            call_tool("analyze_range", _ctx(), {
+                "vault": "Vault", "path": "classeur.xlsx", "range": "pas-une-plage",
+            })
+
+
+class TestEditXlsxStructure:
+    def test_inserts_a_row_and_survives_a_reload(self, vault, workbook):
+        out = call_tool("edit_xlsx_structure", _ctx(), {
+            "vault": "Vault", "path": "classeur.xlsx",
+            "actions": [{"op": "row_insert", "sheet": "Budget", "at": 2}],
+        }, confirm=True)
+        assert out.ok and out.data["actions"] == 1
+        wb = openpyxl.load_workbook(workbook)
+        assert wb["Budget"]["A3"].value == "Loyer"  # la ligne 2 a été poussée
+        wb.close()
+
+    def test_adds_a_sheet(self, vault, workbook):
+        out = call_tool("edit_xlsx_structure", _ctx(), {
+            "vault": "Vault", "path": "classeur.xlsx",
+            "actions": [{"op": "sheet_add", "name": "Trois"}],
+        }, confirm=True)
+        assert out.ok
+        wb = openpyxl.load_workbook(workbook)
+        assert "Trois" in wb.sheetnames
+        wb.close()
+
+    def test_empty_actions_rejected(self, vault, workbook):
+        with pytest.raises(ToolError):
+            call_tool("edit_xlsx_structure", _ctx(), {
+                "vault": "Vault", "path": "classeur.xlsx", "actions": [],
+            })