fix(agents): resolve skills after agent overrides

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/agents/agent-skill-resolution.ts

@@ -0,0 +1,26 @@
+import type { AgentConfig } from "@opencode-ai/sdk"
+import type { BrowserAutomationProvider, GitMasterConfig } from "../config/schema"
+import { resolveMultipleSkills } from "../features/opencode-skill-loader/skill-content"
+
+type AgentConfigWithSkills = AgentConfig & { skills?: string[] }
+
+export function resolveAgentSkills(
+  config: AgentConfig,
+  options: {
+    gitMasterConfig?: GitMasterConfig
+    browserProvider?: BrowserAutomationProvider
+    disabledSkills?: Set<string>
+  } = {}
+): AgentConfig {
+  const { skills, ...configWithoutSkills } = config as AgentConfigWithSkills
+  if (!skills?.length) return configWithoutSkills
+
+  const { resolved } = resolveMultipleSkills(skills, options)
+  if (resolved.size === 0) return configWithoutSkills
+
+  const skillContent = Array.from(resolved.values()).join("\n\n")
+  return {
+    ...configWithoutSkills,
+    prompt: skillContent + (configWithoutSkills.prompt ? "\n\n" + configWithoutSkills.prompt : ""),
+  }
+}