fix: numeric skill names, ultrawork missing run_in_background, ZWSP agent lookups

- #3354: Coerce data.name to String in loadSkillFromPath/loadSkillFromPathAsync
  to prevent crash when YAML parses numeric skill names (e.g., name: 12306)

- #3416: Add required run_in_background parameter to all task() examples in
  ultrawork prompts (default, gpt, gemini, planner) to match tool schema

- #3379/#3417/#3418/#3337/#3335: Strip ZWSP (U+200B) before agent name
  comparisons in agent-tool-restrictions, sync-prompt-sender, tool-execute-after,
  tool-execute-before, oracle-verification-detector, call-omo-agent,
  recovery-prompt-config, and agent-variant to prevent ZWSP-prefixed display
  names from breaking exact-match lookups

src/shared/agent-tool-restrictions.ts

@@ -1,3 +1,5 @@
+import { stripInvisibleAgentCharacters } from "./agent-display-names"
+
 /**
  * Agent tool restrictions for session.prompt calls.
  * OpenCode SDK's session.prompt `tools` parameter expects boolean values.
@@ -45,13 +47,15 @@ const AGENT_RESTRICTIONS: Record<string, Record<string, boolean>> = {
 }
 
 export function getAgentToolRestrictions(agentName: string): Record<string, boolean> {
-  return AGENT_RESTRICTIONS[agentName]
-    ?? Object.entries(AGENT_RESTRICTIONS).find(([key]) => key.toLowerCase() === agentName.toLowerCase())?.[1]
+  const stripped = stripInvisibleAgentCharacters(agentName)
+  return AGENT_RESTRICTIONS[stripped]
+    ?? Object.entries(AGENT_RESTRICTIONS).find(([key]) => key.toLowerCase() === stripped.toLowerCase())?.[1]
     ?? {}
 }
 
 export function hasAgentToolRestrictions(agentName: string): boolean {
-  const restrictions = AGENT_RESTRICTIONS[agentName]
-    ?? Object.entries(AGENT_RESTRICTIONS).find(([key]) => key.toLowerCase() === agentName.toLowerCase())?.[1]
+  const stripped = stripInvisibleAgentCharacters(agentName)
+  const restrictions = AGENT_RESTRICTIONS[stripped]
+    ?? Object.entries(AGENT_RESTRICTIONS).find(([key]) => key.toLowerCase() === stripped.toLowerCase())?.[1]
   return restrictions !== undefined && Object.keys(restrictions).length > 0
 }