🚚 gremlins: rename spire:forks to spire:gremlins (spawn, SPIRE_GREMLIN_CHILD)

plugins/spire/skills/gremlins/templates/spawn.md

@@ -0,0 +1,19 @@
+# Block ${block} (spire:gremlins)
+
+You are a gremlin spawned from base `${base}` (a fork of its session; run log `${run}`), now working on block `${block}` (phase ${phase}, mode ${mode}).
+
+Your system prompt was snapshotted when the base was trained: the git status, the CLAUDE.md files and the environment it shows are **stale**. The delta header below lists what changed in the repository since then. Trust it and the files on disk over the snapshot and over what you remember from training; re-read every file before you change it.
+
+## Delta since training
+
+${delta}
+
+## Rules for this gremlin
+
+- ${commit_rule}
+- Write your handoff note to `${note_path}`.
+- Write gate and test output to `.txt` files under `${logs_dir}`.
+
+## Brief
+
+${brief}