fix: remove task-continuation-enforcer references after dev merge

Dev removed task-continuation-enforcer entirely. Remove all remaining
references from plugin hooks, event handler, tool-execute-before, and
config schema to align with origin/dev.

src/tools/call-omo-agent/tools.ts

@@ -1,12 +1,10 @@
 import { tool, type PluginInput, type ToolDefinition } from "@opencode-ai/plugin"
 import { ALLOWED_AGENTS, CALL_OMO_AGENT_DESCRIPTION } from "./constants"
-import type { CallOmoAgentArgs } from "./types"
+import type { AllowedAgentType, CallOmoAgentArgs, ToolContextWithMetadata } from "./types"
 import type { BackgroundManager } from "../../features/background-agent"
 import { log } from "../../shared"
-import { normalizeAgentType } from "./agent-type-normalizer"
-import { executeBackgroundAgent } from "./background-agent-executor"
-import { executeSyncAgent } from "./sync-agent-executor"
-import type { ToolContextWithMetadata } from "./tool-context-with-metadata"
+import { executeBackground } from "./background-executor"
+import { executeSync } from "./sync-executor"
 
 export function createCallOmoAgent(
   ctx: PluginInput,
@@ -34,21 +32,26 @@ export function createCallOmoAgent(
       const toolCtx = toolContext as ToolContextWithMetadata
       log(`[call_omo_agent] Starting with agent: ${args.subagent_type}, background: ${args.run_in_background}`)
 
-      const normalizedAgent = normalizeAgentType(args.subagent_type)
-      if (!normalizedAgent) {
+      // Case-insensitive agent validation - allows "Explore", "EXPLORE", "explore" etc.
+      if (
+        !ALLOWED_AGENTS.some(
+          (name) => name.toLowerCase() === args.subagent_type.toLowerCase(),
+        )
+      ) {
         return `Error: Invalid agent type "${args.subagent_type}". Only ${ALLOWED_AGENTS.join(", ")} are allowed.`
       }
 
+      const normalizedAgent = args.subagent_type.toLowerCase() as AllowedAgentType
       args = { ...args, subagent_type: normalizedAgent }
 
       if (args.run_in_background) {
         if (args.session_id) {
           return `Error: session_id is not supported in background mode. Use run_in_background=false to continue an existing session.`
         }
-        return await executeBackgroundAgent(args, toolCtx, backgroundManager)
+        return await executeBackground(args, toolCtx, backgroundManager)
       }
 
-      return await executeSyncAgent(args, toolCtx, ctx)
+      return await executeSync(args, toolCtx, ctx)
     },
   })
 }

src/tools/delegate-task/executor.ts

@@ -1,6 +1,6 @@
 export type { ExecutorContext, ParentContext } from "./executor-types"
 
-export { resolveSkillContent } from "./skill-content-resolver"
+export { resolveSkillContent } from "./skill-resolver"
 export { resolveParentContext } from "./parent-context-resolver"
 
 export { executeBackgroundContinuation } from "./background-continuation"