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, 6 insertions, 1 deletions

diff --git a/src/main/claude/index.ts b/src/main/claude/index.ts
index 8971844..30a0f57 100644
--- a/src/main/claude/index.ts
+++ b/src/main/claude/index.ts
@@ -4,6 +4,7 @@ import { getPhaseConfig, getNextPhase, getArtifactFilename } from "./phases";
 import type { Phase, UserPermissionMode } from "./phases";
 import { getProject } from "../db/projects";
 import { updateSession } from "../db/sessions";
+import { getSetting } from "../db/settings";
 import { autoCommitTurn } from "../git";
 import fs from "node:fs";
 import path from "node:path";
@@ -44,10 +45,14 @@ export async function sendMessage({
   const sessionDir = getSessionDir(project.path, session.id);
   ensureDir(sessionDir);
 
+  // Load any custom system prompt for this phase (null → use default)
+  const customSystemPrompt = getSetting(`systemPrompt.${session.phase}`) ?? undefined;
+
   const phaseConfig = getPhaseConfig(
     session.phase as Phase,
     sessionDir,
-    session.permission_mode as UserPermissionMode
+    session.permission_mode as UserPermissionMode,
+    customSystemPrompt
   );
 
   const q = query({