Rename djarea to mizan and fix React casing conventions

Rename the package from djarea to mizan across the entire codebase —
Python package, React library, generators, tests, and examples. Fix
JSX/hook casing (MizanProvider, useMizan, etc.) that broke when the
original PascalCase names were lowercased during the rename.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

desktop/frontend/src/App.tsx

@@ -1,10 +1,10 @@
 import { useState, useEffect, useCallback } from 'react'
-import { DjareaProvider, useDjarea, useDjareaStatus } from '@rythazhur/djarea'
+import { MizanProvider, useMizan, useMizanStatus } from '@rythazhur/mizan'
 
 // ─── System Info ────────────────────────────────────────────────────────────
 
 function SystemInfo() {
-    const { call } = useDjarea()
+    const { call } = useMizan()
     const [info, setInfo] = useState<Record<string, unknown> | null>(null)
 
     useEffect(() => {
@@ -33,7 +33,7 @@ function SystemInfo() {
 // ─── Connection Status ──────────────────────────────────────────────────────
 
 function StatusBar() {
-    const status = useDjareaStatus()
+    const status = useMizanStatus()
     return (
         <div style={{ ...styles.statusBar, color: status === 'connected' ? '#4ade80' : '#f87171' }}>
             {status}
@@ -46,7 +46,7 @@ function StatusBar() {
 type Note = { id: number; title: string; content: string; pinned: boolean; updated_at: string }
 
 function Notes() {
-    const { call } = useDjarea()
+    const { call } = useMizan()
     const [notes, setNotes] = useState<Note[]>([])
     const [selected, setSelected] = useState<Note | null>(null)
     const [title, setTitle] = useState('')
@@ -140,7 +140,7 @@ function Notes() {
 type FileEntry = { name: string; path: string; is_dir: boolean; size: number }
 
 function FileBrowser() {
-    const { call } = useDjarea()
+    const { call } = useMizan()
     const [dir, setDir] = useState('~')
     const [entries, setEntries] = useState<FileEntry[]>([])
     const [parent, setParent] = useState<string | null>(null)
@@ -184,17 +184,17 @@ function FileBrowser() {
 
 export function App() {
     return (
-        <DjareaProvider baseUrl="/api/djarea" autoConnect={false}>
+        <MizanProvider baseUrl="/api/mizan" autoConnect={false}>
             <div style={{ maxWidth: 960, margin: '0 auto', padding: 24 }}>
                 <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: 24 }}>
-                    <h1 style={{ fontSize: 24, color: '#fff' }}>Djarea Desktop</h1>
+                    <h1 style={{ fontSize: 24, color: '#fff' }}>mizan Desktop</h1>
                     <StatusBar />
                 </div>
                 <SystemInfo />
                 <Notes />
                 <FileBrowser />
             </div>
-        </DjareaProvider>
+        </MizanProvider>
     )
 }