chore(config): switch default model to obelix/ornith-1.5-35B

- bump lastChangelogVersion to 0.99.2
- set default provider/model and update subagent overrides
- enable codemode tool by default

config/pi/agent/settings.json

@@ -1,8 +1,8 @@
 {
-    "lastChangelogVersion": "0.87.0",
+  "lastChangelogVersion": "0.99.2",
   "theme": "light/dark",
-    "defaultProvider": "openai-codex",
-    "defaultModel": "gpt-5.6-luna",
+  "defaultProvider": "obelix",
+  "defaultModel": "ornith-1.5-35B",
   "defaultThinkingLevel": "high",
   "hideThinkingBlock": true,
   "compaction": {
@@ -30,20 +30,20 @@
   "subagents": {
     "agentOverrides": {
       "reviewer": {
-                "model": "obelix/ornith-1.0-35B",
+        "model": "obelix/ornith-1.5-35B",
         "fallbackModels": [
-                    "openai-codex/gpt-5.6-luna"
+          "openai-codex/gpt-6-luna"
         ],
         "thinking": "low"
       },
       "planner": {
-                "model": "opencode-go/gpt-5.6-luna"
+        "model": "opencode-go/gpt-6-luna"
       },
       "worker": {
-                "model": "obelix/ornith-1.0-35B"
+        "model": "obelix/ornith-1.5-35B"
       },
       "oracle": {
-                "model": "openai-codex/gpt-5.6-luna",
+        "model": "openai-codex/gpt-6-luna",
         "fallbackModels": [
           "opencode-go/qwen3.7-max"
         ],
@@ -51,6 +51,7 @@
       }
     }
   },
+  "defaultTools": ["+codemode"],
   "quietStartup": true,
   "steeringMode": "all",
   "terminal": {