chore(release): prepare v0.8.60 — drop 0.8.59 docs, clear clippy gates, credit new models

Remove stale v0.8.59 release docs (release-notes-v0.8.59.md, docs/V0_8_59_RELEASE_TRIAGE.md) now that v0.8.59 is shipped.

Clear three clippy release-gate lints: const-evaluate the DEFAULT_SPAWN_DEPTH ceiling assert, and allow the intentional await_holding_lock on two Z.ai routing tests that must hold the test-env mutex across the await.

Credit new 0.8.60 models and first-party provider routes in the changelog: GLM-5.2 (Z.ai + OpenRouter), first-party Z.ai, StepFun/StepFlash (step-3.7-flash), and MiniMax (MiniMax-M3) routes (#3187/#3191). Regenerate the embedded crates/tui/CHANGELOG.md slice.

Author: Hmbown

CHANGELOG.md

@@ -26,6 +26,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **Slash-menu Ctrl+P/Ctrl+N navigation (#3196).** The slash command menu now
   supports Ctrl+P/Ctrl+N movement without letting the global file picker steal
   focus while the menu is open. Thanks @1Git2Clone for the PR.
+- **New models and first-party provider routes.** This release adds
+  **GLM-5.2** (selectable on the Z.ai Coding Plan and over OpenRouter as
+  `z-ai/glm-5.2`, alongside the existing GLM-5.1 default), a first-party
+  **Z.ai** provider route, a first-party **StepFun / StepFlash** route
+  (`step-3.7-flash`), and a first-party **MiniMax** route defaulting to
+  `MiniMax-M3` with the M2.7/M2.5/M2.1 family selectable (#3187/#3191).
 
 ### Changed
 

crates/config/src/lib.rs

@@ -7423,7 +7423,7 @@ fallback_providers = ["deepseek", "openrouter"]
             DEFAULT_SPAWN_DEPTH
         );
         assert_eq!(FleetExecConfig::default().max_spawn_depth, 3);
-        assert!(DEFAULT_SPAWN_DEPTH <= MAX_SPAWN_DEPTH_CEILING);
+        const { assert!(DEFAULT_SPAWN_DEPTH <= MAX_SPAWN_DEPTH_CEILING) };
     }
 
     #[test]

crates/tui/CHANGELOG.md

@@ -26,6 +26,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **Slash-menu Ctrl+P/Ctrl+N navigation (#3196).** The slash command menu now
   supports Ctrl+P/Ctrl+N movement without letting the global file picker steal
   focus while the menu is open. Thanks @1Git2Clone for the PR.
+- **New models and first-party provider routes.** This release adds
+  **GLM-5.2** (selectable on the Z.ai Coding Plan and over OpenRouter as
+  `z-ai/glm-5.2`, alongside the existing GLM-5.1 default), a first-party
+  **Z.ai** provider route, a first-party **StepFun / StepFlash** route
+  (`step-3.7-flash`), and a first-party **MiniMax** route defaulting to
+  `MiniMax-M3` with the M2.7/M2.5/M2.1 family selectable (#3187/#3191).
 
 ### Changed
 

crates/tui/src/main.rs

@@ -7329,6 +7329,7 @@ mod terminal_mode_tests {
     }
 
     #[tokio::test]
+    #[allow(clippy::await_holding_lock)]
     async fn explicit_exec_model_routes_to_unique_authenticated_provider_candidate() {
         let _env_lock = crate::test_support::lock_test_env();
         let _zai = crate::test_support::EnvVarGuard::set("ZAI_API_KEY", "zai-key");
@@ -7349,6 +7350,7 @@ mod terminal_mode_tests {
     }
 
     #[tokio::test]
+    #[allow(clippy::await_holding_lock)]
     async fn explicit_exec_model_reports_ambiguous_authenticated_provider_candidates() {
         let _env_lock = crate::test_support::lock_test_env();
         let _zai = crate::test_support::EnvVarGuard::set("ZAI_API_KEY", "zai-key");
@@ -9050,4 +9052,4 @@ mod pr_prompt_tests {
             "missing command should return false, not panic"
         );
     }
-}
+}