feat: right-click menus everywhere, workspace/session cost, long-term DB safety

Right-click menus: one portal shell (components/ContextMenu.tsx) for every
item with actions - sidebar/Recents/archived session rows (SessionMenu),
console tabs, pane headers, the Changes panel's files/tree/commits, the
workspace home, sessions outside a workspace (SessionRowMenu: Sessions
table, Dashboard, Activity, Workflow runs), prompt images, every Settings
list and every Claude Code/Codex config list (FileItemMenu). Buttons stay;
a delete keeps its button's confirm; the shell stops portal clicks from
reaching the card that opened it.

Status bar: Workspace $ and Session $ on the Workspace page, from
?lane= on GET /api/pricing/cost and the focused/replayed session's cost.

Database, no data dropped: synchronous=NORMAL, journal_size_limit 64 MB,
hourly PASSIVE checkpoint + PRAGMA optimize, idx_events_session_created
(replacing the redundant idx_events_session), watchdog reads
sessions.transcript_path, transcript parsed before the hook's write
transaction, GET /api/sessions/:id?events=0 for the web page (reloads only
on its own session, debounced), streamed export, transactional clear-data
and chunked cleanup, subagent import reads tool_use_ids once, runtime logs
rotated past 5 MB.

client/src/components/settings/__tests__/AiToolsSettings.test.tsx

@@ -4,7 +4,8 @@
  * enable switch and Set default, available rows fold behind a disclosure with
  * a homepage link, Refresh re-detects, every updater gets Update without a version
  * lookup, and Install/Update confirm the exact command, then show the polled
- * job log, folded once it is done.
+ * job log, folded once it is done. An installed row's right-click menu runs
+ * the same Set default / enable switch as its controls.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -125,6 +126,21 @@ describe("AiToolsSettings", () => {
     await user.click(screen.getByRole("button", { name: "Refresh" }));
     expect(api.aiTools.refresh).toHaveBeenCalledOnce();
   });
+
+  it("sets the default and disables a tool from its right-click menu", async () => {
+    const user = userEvent.setup();
+    render(<AiToolsSettings />);
+    const gemini = await screen.findByTestId("ai-tool-gemini");
+    await user.pointer({ keys: "[MouseRight]", target: gemini });
+    await user.click(screen.getByRole("menuitem", { name: "Set default" }));
+    expect(api.aiTools.update).toHaveBeenCalledWith("gemini", { default: true });
+    await user.pointer({ keys: "[MouseRight]", target: gemini });
+    await user.click(screen.getByRole("menuitem", { name: "Disable" }));
+    expect(api.aiTools.update).toHaveBeenCalledWith("gemini", { enabled: false });
+    // A disabled tool cannot become the default from the menu either.
+    await user.pointer({ keys: "[MouseRight]", target: screen.getByTestId("ai-tool-grok") });
+    expect(screen.getByRole("menuitem", { name: "Set default" })).toBeDisabled();
+  });
 });
 
 describe("AiToolsSettings — install and update", () => {

client/src/components/settings/__tests__/PricingSettings.test.tsx

@@ -3,7 +3,8 @@
  * @description The shared Model Pricing table: each tool's tab shows its own
  * vendor's rows, **Show all models** lists the rest, a row added outside the
  * filter turns that switch on instead of vanishing, and Reset Defaults is
- * offered only where asked for (the Claude tab).
+ * offered only where asked for (the Claude tab). A row's right-click menu
+ * runs the same Edit / Delete as its buttons.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -107,4 +108,21 @@ describe("PricingSettings", () => {
     expect(api.settings.resetPricing).toHaveBeenCalledTimes(1);
     expect(api.settings.resetPricing).toHaveBeenCalledWith("claude");
   });
+
+  it("edits and deletes a rule from its right-click menu", async () => {
+    vi.mocked(api.pricing.delete)
+      .mockReset()
+      .mockResolvedValue({} as never);
+    const user = userEvent.setup();
+    render(<PricingSettings vendor="openai" />);
+    const row = (await screen.findByText("gpt-5.6-sol%")).closest("tr")!;
+
+    await user.pointer({ keys: "[MouseRight]", target: row });
+    await user.click(screen.getByRole("menuitem", { name: "Delete" }));
+    expect(api.pricing.delete).toHaveBeenCalledWith("gpt-5.6-sol%");
+
+    await user.pointer({ keys: "[MouseRight]", target: row });
+    await user.click(screen.getByRole("menuitem", { name: "Edit" }));
+    expect(screen.getByDisplayValue("GPT-5.6 Sol")).toBeInTheDocument();
+  });
 });