fix(ci): add node so claude-code's native binary installs

Pinning claude-code to 2.1.143 alone did not unbreak the validate job —
`claude plugin validate` still failed "claude native binary not installed".
claude-code's native binary is downloaded by a node postinstall script, and
the agents mise.toml never declared `node`, so the postinstall could not run.
ai-mktpl's mise.toml has `node` and its validate passes; jack's mise.toml
declares `depends = "node"` on claude-code for the same reason.

Add node 24.15.0 + `depends = "node"` on the claude-code tool entry.

https://claude.ai/code/session_01AiWbZuSU6UCjuXnrBBFk9p

Author: jack-nsheaps[bot]

mise.toml

@@ -4,10 +4,12 @@
 [tools]
 jq = "1.8.1"
 bun = "1.3.13"
-# Pinned: claude-code 2.1.146 ships a broken native-binary install that fails
-# `claude plugin validate` in CI ("claude native binary not installed").
-# 2.1.143 is the last known-good release. Do not float to "latest".
-"npm:@anthropic-ai/claude-code" = "2.1.143"
+node = "24.15.0"
+# claude-code's native binary is installed by a node postinstall script:
+# `depends = "node"` ensures node installs first, else the binary is missing
+# ("claude native binary not installed", which fails `claude plugin validate`).
+# Pinned to 2.1.143 — 2.1.146 ships a broken native-binary install regardless.
+"npm:@anthropic-ai/claude-code" = { version = "2.1.143", depends = "node" }
 "pipx:litellm" = { version = "1.83.14", extras = "proxy" }
 tilt = "0.37.3"