[codex] add proxy debug tracing (#299)

* add proxy debug tracing

* fix proxy debug response header typing

* extend proxy debug tracing to side paths

* Refine proxy debug trace review fixes

* Stabilize proxy debug attempt indexing

* Tighten proxy debug trace accuracy

drizzle/0017_proxy_debug_traces.sql

@@ -0,0 +1,57 @@
+CREATE TABLE `proxy_debug_traces` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`downstream_path` text NOT NULL,
+	`client_kind` text,
+	`session_id` text,
+	`trace_hint` text,
+	`requested_model` text,
+	`downstream_api_key_id` integer,
+	`request_headers_json` text,
+	`request_body_json` text,
+	`sticky_session_key` text,
+	`sticky_hit_channel_id` integer,
+	`selected_channel_id` integer,
+	`selected_route_id` integer,
+	`selected_account_id` integer,
+	`selected_site_id` integer,
+	`selected_site_platform` text,
+	`endpoint_candidates_json` text,
+	`endpoint_runtime_state_json` text,
+	`decision_summary_json` text,
+	`final_status` text,
+	`final_http_status` integer,
+	`final_upstream_path` text,
+	`final_response_headers_json` text,
+	`final_response_body_json` text,
+	`created_at` text DEFAULT (datetime('now')),
+	`updated_at` text DEFAULT (datetime('now'))
+);
+--> statement-breakpoint
+CREATE INDEX `proxy_debug_traces_created_at_idx` ON `proxy_debug_traces` (`created_at`);--> statement-breakpoint
+CREATE INDEX `proxy_debug_traces_session_created_at_idx` ON `proxy_debug_traces` (`session_id`,`created_at`);--> statement-breakpoint
+CREATE INDEX `proxy_debug_traces_model_created_at_idx` ON `proxy_debug_traces` (`requested_model`,`created_at`);--> statement-breakpoint
+CREATE INDEX `proxy_debug_traces_final_status_created_at_idx` ON `proxy_debug_traces` (`final_status`,`created_at`);--> statement-breakpoint
+CREATE TABLE `proxy_debug_attempts` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`trace_id` integer NOT NULL,
+	`attempt_index` integer NOT NULL,
+	`endpoint` text NOT NULL,
+	`request_path` text NOT NULL,
+	`target_url` text NOT NULL,
+	`runtime_executor` text,
+	`request_headers_json` text,
+	`request_body_json` text,
+	`response_status` integer,
+	`response_headers_json` text,
+	`response_body_json` text,
+	`raw_error_text` text,
+	`recover_applied` integer DEFAULT false,
+	`downgrade_decision` integer DEFAULT false,
+	`downgrade_reason` text,
+	`memory_write_json` text,
+	`created_at` text DEFAULT (datetime('now')),
+	FOREIGN KEY (`trace_id`) REFERENCES `proxy_debug_traces`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `proxy_debug_attempts_trace_attempt_unique` ON `proxy_debug_attempts` (`trace_id`,`attempt_index`);--> statement-breakpoint
+CREATE INDEX `proxy_debug_attempts_trace_created_at_idx` ON `proxy_debug_attempts` (`trace_id`,`created_at`);

drizzle/meta/_journal.json

@@ -113,6 +113,13 @@
       "when": 1773979652606,
       "tag": "0016_proxy_logs_client_fields",
       "breakpoints": true
+    },
+    {
+      "idx": 16,
+      "version": "6",
+      "when": 1774692431588,
+      "tag": "0017_proxy_debug_traces",
+      "breakpoints": true
     }
   ]
 }