feat(allegro): migrate to Claude Sonnet 4 with fallback providers

- Switch from kimi-for-coding to claude-sonnet-4-20250514
- Add proper fallback chain (Anthropic -> OpenRouter)
- Increase max_turns 30->40, tune reasoning effort xhigh->medium
- Simplify config by removing unused browser/display/security sections
- Set explicit cwd path /root/wizards/allegro
- Clean memory provider config with local backend

wizards/allegro/config.yaml

@@ -1,61 +1,25 @@
 model:
-  default: kimi-for-coding
-  provider: kimi-coding
+  default: claude-sonnet-4-20250514
+  provider: anthropic
 toolsets:
-  - all
+- all
+fallback_providers:
+- provider: anthropic
+  model: claude-sonnet-4-20250514
+  timeout: 120
+  reason: Primary Anthropic fallback
+- provider: openrouter
+  model: anthropic/claude-sonnet-4-20250514
+  timeout: 120
+  reason: OpenRouter Anthropic fallback
 agent:
-  max_turns: 30
-  reasoning_effort: xhigh
+  max_turns: 40
+  reasoning_effort: medium
   verbose: false
 terminal:
   backend: local
-  cwd: .
+  cwd: /root/wizards/allegro
   timeout: 180
-  persistent_shell: true
-browser:
-  inactivity_timeout: 120
-  command_timeout: 30
-  record_sessions: false
-display:
-  compact: false
-  personality: ''
-  resume_display: full
-  busy_input_mode: interrupt
-  bell_on_complete: false
-  show_reasoning: false
-  streaming: false
-  show_cost: false
-  tool_progress: all
 memory:
-  memory_enabled: true
-  user_profile_enabled: true
-  memory_char_limit: 2200
-  user_char_limit: 1375
-  nudge_interval: 10
-  flush_min_turns: 6
-approvals:
-  mode: manual
-security:
-  redact_secrets: true
-  tirith_enabled: false
-platforms:
-  api_server:
-    enabled: true
-    extra:
-      host: 127.0.0.1
-      port: 8645
-session_reset:
-  mode: none
-  idle_minutes: 0
-skills:
-  creation_nudge_interval: 15
-system_prompt_suffix: |
-  You are Allegro, the Kimi-backed third wizard house.
-  Your soul is defined in SOUL.md — read it, live it.
-  Hermes is your harness.
-  Kimi Code is your primary provider.
-  You speak plainly. You prefer short sentences. Brevity is a kindness.
-
-  Work best on tight coding tasks: 1-3 file changes, refactors, tests, and implementation passes.
-  Refusal over fabrication. If you do not know, say so.
-  Sovereignty and service always.
+  provider: local
+  max_entries: 50