Add complete OAuth token refresh and sync solution

- Setup wizard with auto-detection of OpenClaw paths and Claude CLI
- Token sync watcher (inotifywait) for real-time credential updates
- Auto-refresh trigger timer that runs Claude CLI every 30 min
- Supports Claude CLI in Docker container or on host
- Temporary ANTHROPIC_BASE_URL override for container environments
- Anthropic model configuration for OpenClaw
- Auth profile management (fixes key vs access field)
- Systemd services and timers for both sync and trigger
- Comprehensive documentation and troubleshooting guides
- Re-authentication notification system

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

configs/openclaw-anthropic.json

@@ -0,0 +1,32 @@
+{
+  "_comment": "Anthropic model configuration for OpenClaw. Merge into openclaw.json via setup wizard.",
+  "_warning": "Do NOT add 'anthropic' to models.providers — the built-in provider handles it. Adding a custom one causes double /v1 in URLs resulting in 404 errors.",
+
+  "agents_defaults_model": {
+    "primary": "anthropic/claude-opus-4-6",
+    "fallbacks_to_add": [
+      "anthropic/claude-sonnet-4-6"
+    ]
+  },
+
+  "agents_defaults_models": {
+    "anthropic/claude-opus-4-6": {
+      "alias": "Claude Opus 4.6 (Max)"
+    },
+    "anthropic/claude-sonnet-4-6": {
+      "alias": "Claude Sonnet 4.6 (Max)"
+    }
+  },
+
+  "auth_profile": {
+    "anthropic:default": {
+      "type": "oauth",
+      "provider": "anthropic",
+      "access": "@@TOKEN@@"
+    }
+  },
+
+  "env_vars": {
+    "ANTHROPIC_OAUTH_TOKEN": "@@TOKEN@@"
+  }
+}