feat: universal LLM gateway with embedded multilingual admin console

- OpenAI-compatible gateway with intelligent routing via cortiq-router (allaigate) - Embedded build-free admin SPA at /admin: 7 languages (en/ru/de/fr/es/zh/tr), light/dark themes, hot config reload (no restart) - Admin API, per-request statistics + Prometheus /metrics, secret store, playground - English documentation (primary) with Russian translations (*.ru.md) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-30 10:51:37 +03:00
commit 51487e6329
63 changed files with 11339 additions and 0 deletions
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+//! Model selection: `(task_label, complexity_tier) → ordered list of model_ids`.
+//! The list serves as both a priority order and a fallback chain. See docs/ROUTING.md.
+
+use crate::config::{Config, TierTargets};
+
+pub struct RoutingTable {
+    tiers: std::collections::HashMap<String, Vec<String>>,
+    default: String,
+}
+
+impl RoutingTable {
+    pub fn from_config(cfg: &Config) -> Self {
+        let tiers = cfg
+            .routing
+            .tiers
+            .iter()
+            .map(|(tier, targets)| {
+                let list = match targets {
+                    TierTargets::List(v) => v.clone(),
+                    TierTargets::One(s) => vec![s.clone()],
+                };
+                (tier.clone(), list)
+            })
+            .collect();
+        Self {
+            tiers,
+            default: cfg.routing.default.clone(),
+        }
+    }
+
+    /// Candidates for the given complexity tier, in preference order.
+    /// If the tier is not defined, the sole candidate is `default`.
+    pub fn candidates(&self, tier: &str) -> Vec<String> {
+        self.tiers
+            .get(tier)
+            .cloned()
+            .unwrap_or_else(|| vec![self.default.clone()])
+    }
+
+    /// Default model (used when the router is unavailable).
+    pub fn default_model(&self) -> &str {
+        &self.default
+    }
+}
+
+// TODO(v0.2): cost_aware mode and circuit breaker — pick the cheapest available
+// model no lower than min_class[tier], respecting max_cost_usd_per_request,
+// and skip models whose circuit breaker is open.