fix(skill/command): add user_message param to skill tool, fix command priority order

- BUG-20: Add optional user_message parameter to skill tool for command arguments
- BUG-19: Reorder command discovery: user > project > opencode-project > opencode-global > builtin
- Update AGENTS.md to reflect slashcommand removal and skill tool changes

src/tools/AGENTS.md

@@ -67,13 +67,12 @@
 | `session_search` | `createSessionManagerTools` | query, session_id, case_sensitive, limit |
 | `session_info` | `createSessionManagerTools` | session_id |
 
-### Skill/Command (3)
+### Skill/Command (2)
 
 | Tool | Factory | Parameters |
 |------|---------|------------|
-| `skill` | `createSkillTool` | name |
+| `skill` | `createSkillTool` | name, user_message |
 | `skill_mcp` | `createSkillMcpTool` | mcp_name, tool_name/resource_name/prompt_name, arguments, grep |
-| `slashcommand` | `createSlashcommandTool` | command, user_message |
 
 ### System (2)
 

src/tools/skill/tools.ts

@@ -224,6 +224,10 @@ export function createSkillTool(options: SkillLoadOptions = {}): ToolDefinition
     },
     args: {
       name: tool.schema.string().describe("The skill or command name (e.g., 'code-review' or 'publish'). Use without leading slash for commands."),
+      user_message: tool.schema
+        .string()
+        .optional()
+        .describe("Optional arguments or context for command invocation. Example: name='publish', user_message='patch'"),
     },
     async execute(args: SkillArgs, ctx?: { agent?: string }) {
       const skills = await getSkills()
@@ -273,7 +277,7 @@ export function createSkillTool(options: SkillLoadOptions = {}): ToolDefinition
       const matchedCommand = commands.find(c => c.name.toLowerCase() === requestedName.toLowerCase())
 
       if (matchedCommand) {
-        return await formatLoadedCommand(matchedCommand)
+        return await formatLoadedCommand(matchedCommand, args.user_message)
       }
 
       // No match found — provide helpful error with partial matches

src/tools/skill/types.ts

@@ -5,6 +5,7 @@ import type { CommandInfo } from "../slashcommand/types"
 
 export interface SkillArgs {
   name: string
+  user_message?: string
 }
 
 export interface SkillInfo {

src/tools/slashcommand/command-discovery.ts

@@ -76,10 +76,10 @@ export function discoverCommandsSync(directory?: string): CommandInfo[] {
   }))
 
   return [
-    ...builtinCommands,
-    ...opencodeProjectCommands,
-    ...projectCommands,
-    ...opencodeGlobalCommands,
     ...userCommands,
+    ...projectCommands,
+    ...opencodeProjectCommands,
+    ...opencodeGlobalCommands,
+    ...builtinCommands,
   ]
 }