chore: untrack the local .claude/launch.json and ignore it

.claude/launch.json

@@ -1,19 +0,0 @@
-{
-  "version": "0.0.1",
-  "configurations": [
-    {
-      "name": "dsh-web",
-      "runtimeExecutable": "env",
-      "runtimeArgs": [
-        "DSH_HOME=/Users/jyc/projects/agentProjects/deepseek-harness/.claude/worktrees/tool-call-side-effects-fix-680343/tmp/dsh_home",
-        "DSH_TELEMETRY_DISABLED=1",
-        "node",
-        "apps/cli/lib/bin.js",
-        "web",
-        "--port",
-        "3080"
-      ],
-      "port": 3080
-    }
-  ]
-}

.gitignore

@@ -19,6 +19,7 @@ oxlint-contract-*.ts
 .humanize/
 tmp/
 .claude/commands/
+.claude/launch.json
 .claude/settings.json
 .vscode/
 .DS_Store