v0.7.6: PostgreSQL object management, keychain toggle, tabbed Objects workspace (#12)

* [P1-T1] Change::Ddl Rust variant + execute_change arm

* [P1-T2] Frontend ddl change type + objectCrud capability

* [P1-T3] use_keychain data model + migration v8

* [P2-T1] object_crud skeleton + validators + build_ddl dispatch

* [P2-T2] Sequence builders

* [P2-T3] Enum builders (no value removal)

* [P2-T4] View / matview / extension builders

* [P2-T5] Index + constraint builders

* [P2-T6] Function / procedure + trigger builders

* [P2-T7] build_object_ddl + get_available_extensions commands + wrappers

* [P3-T1] conditional keychain + session passwords

* [P3-T2] keychain-off password prompt on connect

* [P3-T3] default-ON keychain opt-out + tooltip + modal conditional

* [P3-T4] ddl queue card + after-commit refetch

* [P4-T1] ObjectCrudDialog shell

* [P4-T2] SequenceForm

* [P4-T3] EnumForm with no-removal note

* [P4-T4] ExtensionForm with available-extensions picker

* [P4-T5] ViewForm (view + materialized view)

* [P5-T1] IndexForm with column picker

* [P5-T2] ConstraintForm (check/unique/pk/fk) + ColumnPicker

* [P5-T3] FunctionForm (function + procedure)

* [P5-T4] TriggerForm with trigger-function picker

* [P5-T5] ObjectContextMenu + Explorer/TableOverflowMenu CRUD wiring

* [P6-T1] object tab type + openObjectTab dedup

* [P6-T2] extract ObjectDetail for object tabs

* [P6-T3] Objects view two-pane sidebar + workspace

* [P6-T4] object-tab content + per-type tab icons

* [P7-T1] Version bump 0.7.5 -> 0.7.6

* [P7-T2] docs sync README/ROADMAP/AGENTS for v0.7.6

* [P7-T3] chore: Cargo.lock version sync 0.7.5 -> 0.7.6

* fix(ui): object tab icon stacks above name (preflight svg block)

* fix(ui): optically center object tab icon with name

* fix(ui): object tab icon matches query/table icon handling

* [UI-POLISH-1] objectForm tab type + openFormTab store action

* [UI-POLISH-2] ObjectFormTab + KindForm with Visual/SQL toggle

* [UI-POLISH-3] route create/edit through form tabs; remove modal

* docs: create/edit now open as form tabs (AGENTS sync)

* [FB-1] follow app styling patterns + schema dropdown in forms

* [FB-2] Monaco editor for function body + view definition

* [FB-3] form tabs styled like viewers + in-cell editing

* [FB-5] focus outline scoped to input area (label excluded)

* [FB-6] no amber focus outline on Monaco body/definition rows

* [FB-7] header dedupe + schema default + full edit prefill

* [FB-8] SQL view in read-only Monaco editor

* docs: roadmap — table create/edit + relationships (next)

* docs: roadmap — Admin follow-up is 0.7.7 (next after 0.7.6)

src/components/db-viewer/DbViewerScreen.test.tsx

@@ -16,6 +16,9 @@ vi.mock("../../hooks/useDbConnection", () => ({
     useDbConnection: (_connectionId: string) => ({
         connectionError: null,
         connect: vi.fn(),
+        passwordPromptOpen: false,
+        submitPassword: vi.fn(),
+        cancelPassword: vi.fn(),
     }),
 }));
 
@@ -896,7 +899,66 @@ describe("DbViewerScreen", () => {
         ).toBeInTheDocument();
     });
 
-    it("guards the Objects view for MySQL (capability false)", () => {
+    it("objects view renders the sidebar + the tabbed workspace (New query + Changes)", () => {
+        render(
+            <DbViewerScreen
+                connectionId="c1"
+                onHome={() => {}}
+                onSettings={() => {}}
+            />,
+        );
+        fireEvent.click(screen.getByRole("button", { name: /objects/i }));
+        expect(
+            screen.getByRole("button", { name: /new query/i }),
+        ).toBeInTheDocument();
+        expect(
+            screen.getByRole("button", { name: "Changes queue" }),
+        ).toBeInTheDocument();
+    });
+
+    it("objects view renders ObjectDetail for an open object tab", () => {
+        useDbViewerStore.getState().openObjectTab("enums", "public", "role", { name: "role", schema: "public", labels: ["admin"] });
+        render(
+            <DbViewerScreen
+                connectionId="c1"
+                onHome={() => {}}
+                onSettings={() => {}}
+            />,
+        );
+        fireEvent.click(screen.getByRole("button", { name: /objects/i }));
+        expect(screen.getByText("admin")).toBeInTheDocument();
+    });
+
+    it("renders an objectForm tab with the Visual/SQL toggle in the objects view", async () => {
+    vi.spyOn(commands, "executeQuery").mockResolvedValue({ columns: [], rows: [], total_rows: 0, page: 1, page_size: 50 } as any);
+    vi.spyOn(commands, "getSchemas").mockResolvedValue(["public"]);
+    vi.spyOn(commands, "getDatabases").mockResolvedValue(["mydb"]);
+    vi.spyOn(commands, "getTables").mockResolvedValue([] as any);
+    useDbViewerStore.getState().openFormTab({
+      kind: "sequence",
+      schema: "public",
+      name: "",
+      title: "Create sequence",
+      description: "Create sequence",
+      mode: "create",
+      params: { schema: "public", name: "", action: { op: "create" } },
+    });
+    render(
+      <DbViewerScreen
+        connectionId="c1"
+        onHome={() => {}}
+        onSettings={() => {}}
+      />,
+    );
+    fireEvent.click(screen.getByRole("button", { name: /objects/i }));
+    await waitFor(() => {
+      expect(screen.getByPlaceholderText("Sequence name")).toBeInTheDocument();
+    });
+    expect(screen.getByRole("button", { name: "Visual" })).toBeInTheDocument();
+    expect(screen.getByRole("button", { name: "SQL" })).toBeInTheDocument();
+  });
+
+  it("guards the Objects view for MySQL (capability false)", () => {
         useConnectionStore.setState({
             connections: [
                 {