diff --git a/.claude/hooks/block-cargo-lock.sh b/.claude/hooks/block-cargo-lock.sh
new file mode 100755
index 0000000..3032612
--- /dev/null
+++ b/.claude/hooks/block-cargo-lock.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+# Block direct edits to Cargo.lock — it should only change via cargo
+INPUT=$(cat)
+FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // empty')
+
+if [[ "$FILE_PATH" == *"Cargo.lock" ]]; then
+    echo '{
+        "hookSpecificOutput": {
+            "hookEventName": "PreToolUse",
+            "permissionDecision": "deny",
+            "permissionDecisionReason": "Cargo.lock is auto-generated. Use cargo to update dependencies."
+        }
+    }'
+else
+    exit 0
+fi
diff --git a/.claude/hooks/format-rs.sh b/.claude/hooks/format-rs.sh
new file mode 100755
index 0000000..7ae91f4
--- /dev/null
+++ b/.claude/hooks/format-rs.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+# Auto-format Rust files after Edit/Write
+INPUT=$(cat)
+FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // empty')
+
+if [[ "$FILE_PATH" == *.rs ]]; then
+    rustfmt --edition 2021 "$FILE_PATH" 2>/dev/null || true
+fi
diff --git a/.claude/settings.json b/.claude/settings.json
new file mode 100644
index 0000000..ee99580
--- /dev/null
+++ b/.claude/settings.json
@@ -0,0 +1,27 @@
+{
+  "hooks": {
+    "PostToolUse": [
+      {
+        "matcher": "Edit|Write",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "$CLAUDE_PROJECT_DIR/.claude/hooks/format-rs.sh",
+            "statusMessage": "Formatting Rust code..."
+          }
+        ]
+      }
+    ],
+    "PreToolUse": [
+      {
+        "matcher": "Edit|Write",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "$CLAUDE_PROJECT_DIR/.claude/hooks/block-cargo-lock.sh"
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/.claude/skills/release/SKILL.md b/.claude/skills/release/SKILL.md
new file mode 100644
index 0000000..77b7b11
--- /dev/null
+++ b/.claude/skills/release/SKILL.md
@@ -0,0 +1,17 @@
+---
+name: release
+description: Build claudify .deb package and show build info
+disable-model-invocation: true
+---
+
+# Release
+
+Build the claudify .deb package and verify the output.
+
+## Steps
+
+1. Run `cargo tauri build` from the project root
+2. Show the build output path and file size
+3. Inspect the .deb package metadata with `dpkg-deb --info`
+4. List the .deb package contents with `dpkg-deb --contents`
+5. Report the package name, version, architecture, and installed size