feat(proxy): add scoped proxy configuration and docs runbooks

- add scope-aware proxy schema and runtime wiring for providers/channels/tools

- add agent callable proxy_config tool for fast proxy setup

- standardize docs system with index, template, and playbooks

src/providers/ollama.rs

@@ -6,7 +6,6 @@ use serde::{Deserialize, Serialize};
 pub struct OllamaProvider {
     base_url: String,
     api_key: Option<String>,
-    client: Client,
 }
 
 // ─── Request Structures ───────────────────────────────────────────────────────
@@ -76,11 +75,6 @@ impl OllamaProvider {
                 .trim_end_matches('/')
                 .to_string(),
             api_key,
-            client: Client::builder()
-                .timeout(std::time::Duration::from_secs(300))
-                .connect_timeout(std::time::Duration::from_secs(10))
-                .build()
-                .unwrap_or_else(|_| Client::new()),
         }
     }
 
@@ -91,6 +85,10 @@ impl OllamaProvider {
             .is_some_and(|host| matches!(host.as_str(), "localhost" | "127.0.0.1" | "::1"))
     }
 
+    fn http_client(&self) -> Client {
+        crate::config::build_runtime_proxy_client_with_timeouts("provider.ollama", 300, 10)
+    }
+
     fn resolve_request_details(&self, model: &str) -> anyhow::Result<(String, bool)> {
         let requests_cloud = model.ends_with(":cloud");
         let normalized_model = model.strip_suffix(":cloud").unwrap_or(model).to_string();
@@ -139,7 +137,7 @@ impl OllamaProvider {
             temperature
         );
 
-        let mut request_builder = self.client.post(&url).json(&request);
+        let mut request_builder = self.http_client().post(&url).json(&request);
 
         if should_auth {
             if let Some(key) = self.api_key.as_ref() {