feat: **1. `src/main/db/schema.ts`** — add `settings` table … (+10 more)

- ✅ **1. `src/main/db/schema.ts`** — add `settings` table to `initSchema`
- ✅ **2. `src/main/db/settings.ts`** — create file with `getSetting`, `getSettings`, `setSetting`, `deleteSetting`
- ✅ **3. `src/main/claude/phases.ts`** — add `customSystemPrompt?` param to `getPhaseConfig`; add `getDefaultSystemPromptTemplate` export
- ✅ **4. `src/main/claude/index.ts`** — import `getSetting`; load custom prompt in `sendMessage`; pass to `getPhaseConfig`
- ✅ **5. `src/main/ipc/handlers.ts`** — import `settingsDb` + `getDefaultSystemPromptTemplate`; register `settings:get`, `settings:set`, `settings:delete`, `settings:getDefaultPrompts`
- ✅ **6. `src/main/preload.ts`** — add `getSettings`, `setSetting`, `deleteSetting`, `getDefaultSystemPrompts` to interface + api object
- ✅ **7. `renderer/src/styles/globals.css`** — append all new CSS rules
- ✅ **8. `renderer/src/components/settings/SystemPromptsSettings.tsx`** — create file (new directory)
- ✅ **9. `renderer/src/components/SettingsPage.tsx`** — create file
- ✅ **10. `renderer/src/components/Header.tsx`** — add `onOpenSettings` prop + ⚙ button
- ✅ **11. `renderer/src/App.tsx`** — add `showSettings` state; import + render `<SettingsPage>`; pass `onOpenSettings` to Header

1 files changed, 20 insertions, 0 deletions

diff --git a/src/main/ipc/handlers.ts b/src/main/ipc/handlers.ts
index 774eb63..bc7d78d 100644
--- a/src/main/ipc/handlers.ts
+++ b/src/main/ipc/handlers.ts
@@ -2,8 +2,10 @@ import { ipcMain, dialog, type BrowserWindow } from "electron";
 import * as projects from "../db/projects";
 import * as sessions from "../db/sessions";
 import * as claude from "../claude";
+import * as settingsDb from "../db/settings";
 import { createSessionBranch, ensureGitIgnore } from "../git";
 import type { UserPermissionMode } from "../claude/phases";
+import { getDefaultSystemPromptTemplate } from "../claude/phases";
 
 export function registerIpcHandlers(mainWindow: BrowserWindow): void {
   // Projects
@@ -155,6 +157,24 @@ export function registerIpcHandlers(mainWindow: BrowserWindow): void {
     claude.writeClaudeMd(projectPath, content);
   });
 
+  // Settings
+  ipcMain.handle("settings:get", (_, keys: string[]) =>
+    settingsDb.getSettings(keys)
+  );
+  ipcMain.handle("settings:set", (_, key: string, value: string) =>
+    settingsDb.setSetting(key, value)
+  );
+  ipcMain.handle("settings:delete", (_, key: string) =>
+    settingsDb.deleteSetting(key)
+  );
+
+  // Returns default prompt text (with {{artifactDir}} placeholder) for all phases
+  ipcMain.handle("settings:getDefaultPrompts", () => ({
+    research:  getDefaultSystemPromptTemplate("research"),
+    plan:      getDefaultSystemPromptTemplate("plan"),
+    implement: getDefaultSystemPromptTemplate("implement"),
+  }));
+
   // Dialogs
   ipcMain.handle("dialog:selectDirectory", async () => {
     const result = await dialog.showOpenDialog(mainWindow, {