diff --git a/NAVI.md b/NAVI.md
index 486eeb2..6253780 100644
--- a/NAVI.md
+++ b/NAVI.md
@@ -52,6 +52,17 @@
 
 Manuals exist for: `write_tool`, `spawn_agent`, `reflect`, `gmail`, `share_file`.
 
+
+## Android Build Environment
+
+- JDK: OpenJDK 17
+- Android SDK Root: `/home/ubuntu/navi-1/workspace/android-sdk`
+- SDK Tools: `cmdline-tools/latest`, `platform-tools`, `platforms;android-34`, `build-tools;34.0.0`
+- Gradle: 8.12.1 installed in `/home/ubuntu/navi-1/gradle/gradle-8.12.1`
+- Environment Variables: `ANDROID_HOME` and `PATH` configured in `.bashrc`
+- OpenSCAD 2021.01 installed
+
+
 ## Extending Navi
 
 To add a new tool: call the `tool_manual` tool for `write_tool` — full format reference + working example.
diff --git a/navi/profiles/developer/config.json b/navi/profiles/developer/config.json
index e966949..b3fab19 100644
--- a/navi/profiles/developer/config.json
+++ b/navi/profiles/developer/config.json
@@ -10,10 +10,10 @@
   },
   "llm_backend": "ollama",
   "model": [
+	"gemma4:26b-a4b-it-q4_K_M",
     "gemma4:31b-cloud",
     "kimi-k2.6:cloud",
-    "qwen3.6:27b",
-    "gemma4:26b-a4b-it-q4_K_M"
+    "qwen3.6:27b"
   ],
   "temperature": 0.45,
   "max_iterations": 45,
diff --git a/navi/profiles/discuss/config.json b/navi/profiles/discuss/config.json
index 3242ec6..cfa781f 100644
--- a/navi/profiles/discuss/config.json
+++ b/navi/profiles/discuss/config.json
@@ -4,10 +4,10 @@
   "description": "Creative partner for Q&A, brainstorming, and idea exploration. High creativity, free-form thinking.",
   "short_description": "Creative Q&A and idea discussion — best for open questions, brainstorming, and exploring concepts.",
   "model": [
+    "gemma4:26b-a4b-it-q4_K_M",
     "gemma4:31b-cloud",
     "kimi-k2.6:cloud",
-    "qwen3.6:27b",
-    "gemma4:26b-a4b-it-q4_K_M"
+    "qwen3.6:27b"
   ],
   "temperature": 0.85,
   "max_iterations": 12,
diff --git a/navi/profiles/secretary/config.json b/navi/profiles/secretary/config.json
index bef9688..a3746f4 100644
--- a/navi/profiles/secretary/config.json
+++ b/navi/profiles/secretary/config.json
@@ -10,10 +10,10 @@
   },
   "llm_backend": "ollama",
   "model": [
+	"gemma4:26b-a4b-it-q4_K_M",
     "gemma4:31b-cloud",
     "kimi-k2.6:cloud",
-    "qwen3.6:27b",
-    "gemma4:26b-a4b-it-q4_K_M"
+    "qwen3.6:27b"
   ],
   "temperature": 0.65,
   "max_iterations": 35,
diff --git a/navi/profiles/server_admin/config.json b/navi/profiles/server_admin/config.json
index 60805ff..0c23618 100644
--- a/navi/profiles/server_admin/config.json
+++ b/navi/profiles/server_admin/config.json
@@ -10,10 +10,10 @@
   },
   "llm_backend": "ollama",
   "model": [
+    "gemma4:26b-a4b-it-q4_K_M",
     "gemma4:31b-cloud",
     "kimi-k2.6:cloud",
-    "qwen3.6:27b",
-    "gemma4:26b-a4b-it-q4_K_M"
+    "qwen3.6:27b"
   ],
   "temperature": 0.30,
   "max_iterations": 40,
diff --git a/navi/profiles/tool_developer/config.json b/navi/profiles/tool_developer/config.json
index 7edbc7d..6149d01 100644
--- a/navi/profiles/tool_developer/config.json
+++ b/navi/profiles/tool_developer/config.json
@@ -10,10 +10,10 @@
   },
   "llm_backend": "ollama",
   "model": [
+    "gemma4:26b-a4b-it-q4_K_M",
     "gemma4:31b-cloud",
     "kimi-k2.6:cloud",
-    "qwen3.6:27b",
-    "gemma4:26b-a4b-it-q4_K_M"
+    "qwen3.6:27b"
   ],
   "temperature": 0.35,
   "max_iterations": 35,