chore(desktop): bump agents.rs file-size override for model-tuning commands

#1534 (buzz-agent model-tuning) added Tauri commands for reading and writing
the model-tuning fields, growing agents.rs by 6 lines beyond the 1449
exception. Bump to 1455 to cover the merged total. Queued to split.

Co-authored-by: Will Pfleger <pfleger.will@gmail.com>
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>

Author: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7

desktop/scripts/check-file-sizes.mjs

@@ -63,8 +63,10 @@ const overrides = new Map([
   // global-agent-config: build_deploy_payload threads global config fallback
   // for provider/model/env_vars (+4 lines). cargo fmt reflowed 2 more lines.
   // deploy-resolver: resolve_deploy_model_provider fn + doc comment (+6 lines).
+  // #1534 buzz-agent model-tuning: set_global_agent_config / global agent config
+  // Tauri commands for tuning fields add ~6 lines. Queued to split.
   // Queued to split.
-  ["src-tauri/src/commands/agents.rs", 1449],
+  ["src-tauri/src/commands/agents.rs", 1455],
   // #1418 read-path fix: get_thread_replies' blocker fix (shared TIMELINE_KINDS
   // const + build_thread_replies_filter helper, mirroring the channel sibling so
   // the two p-gate filters can't drift) plus two guard unit tests. The file was