proxy: add configurable HTTP timeouts for models and peers (#619)

Add configurable HTTP timeout settings to both models and peers to support installations that requires longer timeouts than the current hardcoded defaults.

Closes #618

config.example.yaml

@@ -284,6 +284,21 @@ models:
     # - optional, default: undefined (use global setting)
     sendLoadingState: false
 
+    # timeouts: configure proxy connection timeouts for this model
+    # - optional, defaults shown below
+    # - useful for models running on slower hardware that need longer timeouts
+    # - connect: TCP connection timeout in seconds
+    # - responseHeader: time to wait for response headers in seconds
+    #   (increasing this helps avoid 502 errors on slow hardware)
+    # - tlsHandshake: TLS handshake timeout in seconds
+    # - idleConn: idle connection timeout in seconds
+    # - set any value to 0 to disable that timeout (not recommended)
+    timeouts:
+      connect: 30
+      responseHeader: 60
+      tlsHandshake: 10
+      idleConn: 90
+
   # Unlisted model example:
   "qwen-unlisted":
     # unlisted: boolean, true or false
@@ -426,6 +441,16 @@ peers:
       - z-ai/glm-4.7
       - moonshotai/kimi-k2-0905
       - minimax/minimax-m2.1
+    # timeouts: configure proxy connection timeouts for this peer
+    # - optional, defaults shown below
+    # - useful when the peer runs on slower hardware
+    # - set any value to 0 to disable that timeout (not recommended)
+    timeouts:
+      connect: 30
+      responseHeader: 60
+      tlsHandshake: 10
+      idleConn: 90
+
     # filters: a dictionary of filter settings for peer requests
     # - optional, default: empty dictionary
     # - same capabilities as model filters (stripParams, setParams)