Added commit message automation script using GenAI in the project's h…

…usky hook configuration

.husky/commit-msg

@@ -0,0 +1 @@
+node packages/cli/built/genaiscript.cjs run commit-msg $1

genaisrc/commit-msg.genai.mts

@@ -0,0 +1,28 @@
+const msg = env.files[0]
+const msgContent = msg.content
+    ?.split(/\n/g)
+    .filter((l) => l && !/^# /.test(l))
+    .join("\n")
+if (!msgContent) cancel("commit message already exists")
+
+// Check for staged changes and stage all changes if none are staged
+let diff = await host.exec("git", ["diff", "--cached"])
+if (!diff.stdout) cancel("no staged changes")
+// Generate commit message
+const res = await runPrompt(
+    (_) => {
+        _.def("GIT_DIFF", diff, { maxTokens: 20000 })
+        _.$`GIT_DIFF is a diff of all staged changes, coming from the command:
+\`\`\`
+git diff --cached
+\`\`\`
+Please generate a concise, one-line commit message for these changes.
+- do NOT add quotes`
+    },
+    { cache: false, temperature: 0.8 }
+)
+
+if (res.error) throw res.error
+const message = res.text
+if (!message) cancel("no message generated")
+await workspace.writeText(msg.filename, message)