feat: multi-work agent

examples/custom.opencode.jsonc

@@ -1,7 +1,10 @@
 {
     "$schema": "https://opencode.ai/config.json",
-    // All seven assignments are required. Model IDs are local to the provider.
-    // Missing models disable registration; only GPT mode has an Astra fallback.
+    // Required for multi-work -> coordinate -> workers. Apply in worktrees too.
+    // Multi-work and coordinate use deep-lo, falling back to good-lo when unavailable.
+    "experimental": { "subagent_depth": 2 },
+    // All six worker assignments are required. Model IDs are local to the provider.
+    // An unavailable deep-lo omits deep workers and uses good-lo for orchestration.
     "plugins": [
         {
             "package": "stanp-opencode",
@@ -16,7 +19,6 @@
                     "good-hi": { "model": "gpt-5.6-sol", "effort": "high" },
                     "deep-lo": { "model": "gpt-6-astra", "effort": "low" },
                     "deep-hi": { "model": "gpt-6-astra", "effort": "high" },
-                    "coordinate": { "model": "gpt-6-astra", "effort": "medium" },
                 },
             },
         },

examples/gpt.opencode.jsonc

@@ -1,6 +1,8 @@
 {
     "$schema": "https://opencode.ai/config.json",
-    // Requires OpenCode 2.0.4 or newer.
+    // Requires OpenCode 2.0.4. Native worktree delegation is version-sensitive.
+    // Required for multi-work -> coordinate -> workers. Apply in worktrees too.
+    "experimental": { "subagent_depth": 2 },
     // Availability uses the native catalog, including integrations and earlier plugins.
     "plugins": [
         {