feat: i18n 11 languages + website update + fix #139 #140 #141

i18n:
- Add 9 new locale files (ja/ko/de/es/fr/pt/ru/vi/zh-TW)
- Add multilingual README files for all 11 languages
- Add locale helper, index, and modular translation system
- Add translation generation scripts

Website (docs/index.html):
- Replace 公益AI接口 branding with 晴辰云AI接口
- Remove OpenClaw 独立安装包 promotion block
- Update SEO meta tags (description, keywords, OG, Twitter, JSON-LD)
- Add 11-language README links to footer
- Update 元宝派 link to new URL

Bug fixes:
- fix(cron): delivery format mode:'push' → mode:'announce', remove invalid 'to' field (fixes #141)
- fix(cron): allow single-channel users to select delivery channel
- fix(cron): preserve delivery field in job state for editing
- fix(models): add 'ollama' as recognized API type, prevent overwriting native ollama config (fixes #140)
- fix(models): skip /v1 append for ollama native API baseUrl
- fix(assistant): normalize 'google-generative-ai' consistently, add ollama hints
- fix(version): use CLI path classification for source detection on Windows (fixes #139)
- fix(version): default to 'official' instead of 'chinese' when source unknown
- fix(version): reorder npm global package check based on active CLI

scripts/translations/de/agents.json

@@ -0,0 +1,23 @@
+{
+  "title": "Agenten-Verwaltung",
+  "desc": "OpenClaw-Agenten erstellen und verwalten",
+  "addAgent": "+ Neuer Agent",
+  "noAgents": "Keine Agenten",
+  "loadFailed": "Laden fehlgeschlagen",
+  "default": "Standard",
+  "backup": "Backup",
+  "edit": "Bearbeiten",
+  "delete": "Löschen",
+  "notSet": "Nicht gesetzt",
+  "addTitle": "Neuer Agent",
+  "agentId": "Agent-ID",
+  "agentName": "Name",
+  "agentModel": "Modell",
+  "created": "Agent erstellt",
+  "createFailed": "Erstellen fehlgeschlagen",
+  "editTitle": "Agent bearbeiten — {id}",
+  "updated": "Aktualisiert",
+  "updateFailed": "Aktualisierung fehlgeschlagen",
+  "deleted": "Gelöscht",
+  "deleteFailed": "Löschen fehlgeschlagen"
+}