feat: refresh dashboard settings UX and Codex feature toggles (#153)

* feat: refresh dashboard settings UX and Codex feature toggles

Improve settings/tasks mobile layout, model effort validation by agent type, and preset models for GPT 5.5 and Opus 4.7. Store Codex fast mode and goals in config.toml with Claude fastMode session sync and updated docs for Codex 0.133.

Co-authored-by: Cursor <cursoragent@cursor.com>

* style: apply pre-commit formatting after dashboard settings commit

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>

src/claude-session-settings.ts

@@ -0,0 +1,68 @@
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+
+const DEFAULT_CLAUDE_SESSION_ENV = {
+  CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS: '1',
+  CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MD: '1',
+  CLAUDE_CODE_DISABLE_AUTO_MEMORY: '0',
+} as const;
+
+function settingsHomeDir(): string {
+  return process.env.EJCLAW_SETTINGS_HOME || os.homedir();
+}
+
+export function claudeHostSettingsPath(): string {
+  const override = process.env.EJCLAW_CLAUDE_SETTINGS_PATH?.trim();
+  if (override) return override;
+  return path.join(settingsHomeDir(), '.claude', 'settings.json');
+}
+
+export function readHostClaudeFastMode(): boolean {
+  const file = claudeHostSettingsPath();
+  if (!fs.existsSync(file)) return false;
+  try {
+    const data = JSON.parse(fs.readFileSync(file, 'utf-8')) as Record<
+      string,
+      unknown
+    >;
+    return data.fastMode === true;
+  } catch {
+    return false;
+  }
+}
+
+export function ensureClaudeSessionSettings(groupSessionsDir: string): void {
+  const settingsFile = path.join(groupSessionsDir, 'settings.json');
+  let data: Record<string, unknown> = {
+    env: { ...DEFAULT_CLAUDE_SESSION_ENV },
+  };
+
+  if (fs.existsSync(settingsFile)) {
+    try {
+      const existing = JSON.parse(
+        fs.readFileSync(settingsFile, 'utf-8'),
+      ) as Record<string, unknown>;
+      data = {
+        ...existing,
+        env: {
+          ...DEFAULT_CLAUDE_SESSION_ENV,
+          ...(typeof existing.env === 'object' && existing.env !== null
+            ? (existing.env as Record<string, unknown>)
+            : {}),
+        },
+      };
+    } catch {
+      data = { env: { ...DEFAULT_CLAUDE_SESSION_ENV } };
+    }
+  }
+
+  if (readHostClaudeFastMode()) {
+    data.fastMode = true;
+  } else {
+    delete data.fastMode;
+  }
+
+  fs.mkdirSync(groupSessionsDir, { recursive: true });
+  fs.writeFileSync(settingsFile, `${JSON.stringify(data, null, 2)}\n`);
+}